/* ==========================================================================
   TCL Clear — Main Theme Stylesheet
   The Curious Lab | Dark Futuristic Science-Lab Tech Blog
   ========================================================================== */

/* ==========================================================================
   1. CSS Custom Properties
   ========================================================================== */

:root {
  /* Brand Colors */
  --clr-primary: #100274;
  --clr-secondary: #992ff7;
  --clr-gradient: linear-gradient(135deg, #992ff7, #100274);
  --clr-accent-light: #e0d4ff;
  --clr-surface-dark: #0a0145;
  --clr-surface-card: rgba(16, 2, 116, 0.4);
  --clr-surface-card-hover: rgba(16, 2, 116, 0.55);
  --clr-text-primary: #f0ecff;
  --clr-text-secondary: #b8a9e0;
  --clr-success: #00d4aa;
  --clr-error: #ff4757;
  --clr-body-bg: #050030;
  --clr-border: rgba(153, 47, 247, 0.15);
  --clr-border-hover: rgba(153, 47, 247, 0.45);
  --clr-glass-bg: rgba(10, 1, 69, 0.6);
  --clr-header-bg: rgba(10, 1, 69, 0.85);
  --clr-overlay: rgba(5, 0, 48, 0.8);

  /* Category Colors */
  --clr-cat-ai: #00d4aa;
  --clr-cat-crypto: #f7931a;
  --clr-cat-howto: #4da6ff;
  --clr-cat-news: #ff6b6b;
  --clr-cat-reviews: #ffd93d;

  /* Typography */
  --ff-heading: "Aeonik", "Helvetica Neue", Arial, sans-serif;
  --ff-body: "Poppins", "Segoe UI", sans-serif;
  --ff-mono: "Fira Code", "Consolas", "Monaco", monospace;
  --fs-base: 1rem;
  --fs-sm: 0.875rem;
  --fs-xs: 0.75rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --lh-body: 1.7;
  --lh-heading: 1.2;
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* Spacing (4px base) */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(153, 47, 247, 0.3);
  --shadow-glow-strong: 0 0 30px rgba(153, 47, 247, 0.5);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Z-index scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-header: 1000;
  --z-progress: 1001;
  --z-overlay: 2000;
  --z-modal: 3000;

  /* Layout */
  --header-height: 72px;
  --container-max: 1200px;
  --content-max: 720px;
}

/* Light Mode Overrides */
[data-theme="light"] {
  --clr-body-bg: #f5f2ff;
  --clr-surface-dark: #ede8ff;
  --clr-surface-card: rgba(255, 255, 255, 0.7);
  --clr-surface-card-hover: rgba(255, 255, 255, 0.85);
  --clr-text-primary: #1a1040;
  --clr-text-secondary: #4a3d6e;
  --clr-glass-bg: rgba(255, 255, 255, 0.6);
  --clr-header-bg: rgba(245, 242, 255, 0.9);
  --clr-overlay: rgba(245, 242, 255, 0.9);
  --clr-border: rgba(16, 2, 116, 0.12);
  --clr-border-hover: rgba(16, 2, 116, 0.3);
  --shadow-sm: 0 2px 8px rgba(16, 2, 116, 0.08);
  --shadow-md: 0 4px 16px rgba(16, 2, 116, 0.1);
  --shadow-lg: 0 8px 32px rgba(16, 2, 116, 0.12);
  --shadow-glow: 0 0 20px rgba(153, 47, 247, 0.15);
}

/* ==========================================================================
   2. CSS Reset
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-body);
  color: var(--clr-text-primary);
  background-color: var(--clr-body-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* ==========================================================================
   3. @font-face — Aeonik
   ========================================================================== */

@font-face {
  font-family: "Aeonik";
  src: url("../fonts/aeonik/aeonik-light.otf") format("opentype");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Aeonik";
  src: url("../fonts/aeonik/aeonik-regular.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Aeonik";
  src: url("../fonts/aeonik/aeonik-bold.otf") format("opentype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ==========================================================================
   4. Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  line-height: var(--lh-heading);
  color: var(--clr-text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.3rem, 3vw, 2rem); }
h4 { font-size: clamp(1.125rem, 2.5vw, 1.5rem); }
h5 { font-size: var(--fs-lg); }
h6 { font-size: var(--fs-base); }

p {
  margin-bottom: var(--sp-6);
}

a:not([class]) {
  color: var(--clr-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:not([class]):hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

code,
kbd,
samp {
  font-family: var(--ff-mono);
  font-size: 0.9em;
  background: var(--clr-surface-dark);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.15em 0.4em;
}

pre {
  background: var(--clr-surface-dark);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--sp-6);
  overflow-x: auto;
  margin-bottom: var(--sp-6);
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: var(--fs-sm);
}

/* Body scroll lock when overlays are open */
body.menu-open,
body.search-open {
  overflow: hidden;
}

/* ==========================================================================
   5. Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--sp-8);
  }
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-8);
}

@media (min-width: 992px) {
  .content-grid {
    grid-template-columns: 2fr 1fr;
    gap: var(--sp-12);
  }
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}

@media (min-width: 576px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.card-grid--3col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}

@media (min-width: 576px) {
  .card-grid--3col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .card-grid--3col {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   5b. Featured Post
   ========================================================================== */

.featured-post {
  margin-bottom: var(--sp-10);
}

.featured-post__link {
  position: relative;
  display: block;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 380px;
  text-decoration: none;
  color: #fff;
  transition: box-shadow var(--transition-base);
}

.featured-post__link:hover {
  box-shadow: var(--shadow-glow-strong);
}

.featured-post__image {
  position: absolute;
  inset: 0;
}

.featured-post__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.featured-post__link:hover .featured-post__image img {
  transform: scale(1.03);
}

.featured-post__overlay {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 380px;
  padding: var(--sp-8);
  background: linear-gradient(
    to top,
    rgba(5, 0, 48, 0.95) 0%,
    rgba(5, 0, 48, 0.6) 40%,
    rgba(5, 0, 48, 0.15) 70%,
    transparent 100%
  );
}

@media (min-width: 768px) {
  .featured-post__link {
    min-height: 480px;
  }
  .featured-post__overlay {
    min-height: 480px;
    padding: var(--sp-12);
  }
}

.featured-post__label {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--clr-secondary);
  margin-bottom: var(--sp-3);
}

.featured-post__label::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--clr-secondary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--clr-secondary);
  animation: pulse 2s ease-in-out infinite;
}

.featured-post__cat {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  align-self: flex-start;
  padding: var(--sp-1) var(--sp-3);
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(4px);
  color: #fff;
  margin-bottom: var(--sp-4);
  line-height: 1.4;
}

.featured-post__cat svg {
  width: 14px;
  height: 14px;
}

.featured-post__title {
  font-family: var(--ff-heading);
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: var(--fw-bold);
  line-height: var(--lh-heading);
  margin-bottom: var(--sp-3);
  color: #fff;
}

.featured-post__excerpt {
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--fs-base);
  line-height: 1.6;
  max-width: 640px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--sp-4);
}

.featured-post__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.6);
}

.featured-post__meta .meta-avatar {
  border-radius: 50%;
}

/* ==========================================================================
   5c. Highlight Posts (2-column)
   ========================================================================== */

.highlight-posts {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
  margin-bottom: var(--sp-10);
}

@media (min-width: 768px) {
  .highlight-posts {
    grid-template-columns: repeat(2, 1fr);
  }
}

.highlight-card {
  display: flex;
  flex-direction: column;
  background: var(--clr-surface-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}

.highlight-card:hover {
  transform: translateY(-4px);
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-glow);
}

.highlight-card__image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.highlight-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.highlight-card:hover .highlight-card__image img {
  transform: scale(1.04);
}

.highlight-card__image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(5, 0, 48, 0.5) 0%, transparent 50%);
  pointer-events: none;
}

.highlight-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--sp-6);
}

.highlight-card__title {
  font-size: clamp(1.15rem, 2.5vw, 1.4rem);
  margin-bottom: var(--sp-3);
  line-height: var(--lh-heading);
}

.highlight-card__title a {
  color: var(--clr-text-primary);
  transition: color var(--transition-fast);
}

.highlight-card__title a:hover {
  color: var(--clr-secondary);
}

.highlight-card__excerpt {
  color: var(--clr-text-secondary);
  font-size: var(--fs-sm);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--sp-4);
  flex: 1;
}

/* ==========================================================================
   5d. Category Filter Strip
   ========================================================================== */

.category-strip {
  margin-bottom: var(--sp-10);
  padding: var(--sp-6);
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.category-strip__label {
  display: block;
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-text-secondary);
  margin-bottom: var(--sp-4);
}

.category-strip__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.category-strip__pill {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--radius-full);
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-text-primary);
  background: var(--clr-surface-card);
  border: 1px solid var(--clr-border);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.category-strip__pill:hover {
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.category-strip__pill svg {
  width: 16px;
  height: 16px;
  opacity: 0.7;
}

.category-strip__count {
  font-size: var(--fs-xs);
  color: var(--clr-text-secondary);
  background: rgba(153, 47, 247, 0.15);
  padding: 1px 8px;
  border-radius: var(--radius-full);
  margin-left: var(--sp-1);
}

/* Category pill color accents */
.category-strip__pill.category-badge--ai:hover { border-color: var(--clr-cat-ai); box-shadow: 0 0 16px rgba(0, 212, 170, 0.3); }
.category-strip__pill.category-badge--crypto:hover { border-color: var(--clr-cat-crypto); box-shadow: 0 0 16px rgba(247, 147, 26, 0.3); }
.category-strip__pill.category-badge--how-to-guide:hover { border-color: var(--clr-cat-howto); box-shadow: 0 0 16px rgba(77, 166, 255, 0.3); }
.category-strip__pill.category-badge--tech-news:hover { border-color: var(--clr-cat-news); box-shadow: 0 0 16px rgba(255, 107, 107, 0.3); }
.category-strip__pill.category-badge--reviews:hover { border-color: var(--clr-cat-reviews); box-shadow: 0 0 16px rgba(255, 217, 61, 0.3); }

/* ==========================================================================
   6. Site Header
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  background: var(--clr-header-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(153, 47, 247, 0.2);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-header.header-scrolled {
  background: rgba(10, 1, 69, 0.95);
  box-shadow: var(--shadow-md);
}

[data-theme="light"] .site-header.header-scrolled {
  background: rgba(245, 242, 255, 0.97);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo img {
  max-height: 40px;
  width: auto;
}

.site-logo a {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-xl);
  color: var(--clr-text-primary);
}

/* Primary Navigation */
.primary-nav {
  display: none;
}

@media (min-width: 992px) {
  .primary-nav {
    display: flex;
    align-items: center;
    gap: var(--sp-8);
  }
}

.primary-nav a {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-text-secondary);
  transition: color var(--transition-fast), text-shadow var(--transition-base);
  padding: var(--sp-2) 0;
  position: relative;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  color: var(--clr-secondary);
  text-shadow: 0 0 12px rgba(153, 47, 247, 0.5);
}

.primary-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--clr-gradient);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-base);
}

.primary-nav a:hover::after,
.primary-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.header-actions button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--clr-text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.header-actions button:hover {
  color: var(--clr-secondary);
  background: rgba(153, 47, 247, 0.1);
}

.header-actions button svg {
  width: 20px;
  height: 20px;
}

/* Theme toggle icon visibility */
.icon-sun { display: none; }
.icon-moon { display: block; }

/* Sidebar recent posts fallback */
.recent-posts-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.recent-posts-list li {
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--clr-border);
}

.recent-posts-list li:last-child {
  border-bottom: none;
}

.recent-posts-list a {
  display: block;
  color: var(--clr-text-primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  transition: color var(--transition-fast);
}

.recent-posts-list a:hover {
  color: var(--clr-secondary);
}

.recent-posts-list time {
  display: block;
  font-size: var(--fs-xs);
  color: var(--clr-text-secondary);
  margin-top: var(--sp-1);
}

/* Image lazy load fade */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.4s ease;
}

img[loading="lazy"].loaded,
img:not([loading="lazy"]) {
  opacity: 1;
}

/* Hamburger */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
}

@media (min-width: 992px) {
  .menu-toggle {
    display: none;
  }
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
  transform-origin: center;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Body offset for fixed header */
.site-main {
  padding-top: var(--header-height);
}

.site-title {
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-xl);
  color: var(--clr-text-primary);
  text-decoration: none;
}

.site-title:hover {
  color: var(--clr-secondary);
}

/* Section Title (shared) */
.section-title {
  font-family: var(--ff-heading);
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: var(--fw-bold);
  margin-bottom: var(--sp-8);
  color: var(--clr-text-primary);
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--clr-border-hover), transparent);
}

/* ==========================================================================
   7. Reading Progress Bar
   ========================================================================== */

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: var(--z-progress);
  background: transparent;
  pointer-events: none;
}

.reading-progress__bar {
  height: 100%;
  background: var(--clr-gradient);
  transform: scaleX(0);
  transform-origin: left;
  will-change: transform;
}

/* ==========================================================================
   8. Hero Section
   ========================================================================== */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height));
  background: radial-gradient(ellipse at 30% 50%, rgba(153, 47, 247, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 30%, rgba(16, 2, 116, 0.3) 0%, transparent 50%),
              var(--clr-body-bg);
  text-align: center;
  overflow: hidden;
  padding: var(--sp-8) var(--sp-4);
}

/* Floating gradient orbs */
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  pointer-events: none;
}

.hero::before {
  width: 500px;
  height: 500px;
  background: rgba(153, 47, 247, 0.3);
  top: -100px;
  left: -100px;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  width: 400px;
  height: 400px;
  background: rgba(0, 212, 170, 0.15);
  bottom: -50px;
  right: -80px;
  animation: float 10s ease-in-out infinite reverse;
}

#particles-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero__title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  line-height: 1.1;
  margin-bottom: var(--sp-6);
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__subtitle {
  font-family: var(--ff-body);
  font-weight: var(--fw-light);
  font-size: clamp(var(--fs-base), 2.5vw, var(--fs-xl));
  color: var(--clr-text-secondary);
  margin-bottom: var(--sp-10);
  max-width: 600px;
  margin-inline: auto;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-8);
  background: var(--clr-gradient);
  color: #fff;
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  transition: box-shadow var(--transition-base), transform var(--transition-fast);
}

.hero__cta:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-2px);
}

/* ==========================================================================
   9. Post Cards
   ========================================================================== */

.post-card {
  position: relative;
  background: var(--clr-surface-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-glow);
}

.post-card__image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.post-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.post-card:hover .post-card__image img {
  transform: scale(1.04);
}

.post-card__image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(5, 0, 48, 0.6) 0%, transparent 50%);
  pointer-events: none;
}

.post-card__category {
  position: absolute;
  top: var(--sp-4);
  left: var(--sp-4);
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-1) var(--sp-3);
  background: var(--clr-gradient);
  color: #fff;
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--radius-full);
  line-height: 1.4;
}

.post-card__body {
  padding: var(--sp-6);
}

.post-card__title {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  margin-bottom: var(--sp-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card__title a {
  color: var(--clr-text-primary);
  transition: color var(--transition-fast);
}

.post-card__title a:hover {
  color: var(--clr-secondary);
}

.post-card__excerpt {
  color: var(--clr-text-secondary);
  font-size: var(--fs-sm);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--sp-4);
}

.post-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  font-size: var(--fs-xs);
  color: var(--clr-text-secondary);
}

.post-card__meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
}

.post-card__meta-item svg {
  width: 14px;
  height: 14px;
  opacity: 0.7;
}

/* ==========================================================================
   10. Category Badges
   ========================================================================== */

.category-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-1) var(--sp-3);
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: var(--radius-full);
  line-height: 1.5;
}

.category-badge--ai {
  color: var(--clr-cat-ai);
  background: rgba(0, 212, 170, 0.15);
}

.category-badge--crypto {
  color: var(--clr-cat-crypto);
  background: rgba(247, 147, 26, 0.15);
}

.category-badge--how-to-guide {
  color: var(--clr-cat-howto);
  background: rgba(77, 166, 255, 0.15);
}

.category-badge--tech-news {
  color: var(--clr-cat-news);
  background: rgba(255, 107, 107, 0.15);
}

.category-badge--reviews {
  color: var(--clr-cat-reviews);
  background: rgba(255, 217, 61, 0.15);
}

/* ==========================================================================
   11. Single Post
   ========================================================================== */

/* Single Post Header */
.single-post__header {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.single-post__featured-image {
  position: absolute;
  inset: 0;
}

.single-post__featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.single-post__featured-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--clr-body-bg) 0%, rgba(5, 0, 48, 0.4) 50%, transparent 100%);
}

.single-post__header-content {
  position: relative;
  z-index: 1;
  padding: var(--sp-12) 0 var(--sp-8);
  width: 100%;
}

.single-post__title {
  font-size: clamp(1.8rem, 5vw, 3rem);
  margin-bottom: var(--sp-4);
  max-width: var(--content-max);
}

.single-post__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  font-size: var(--fs-sm);
  color: var(--clr-text-secondary);
}

.single-post__meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}

.single-post__meta-item svg {
  width: 16px;
  height: 16px;
  opacity: 0.7;
}

/* Post Content */
.post-content,
.entry-content {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-block: var(--sp-12);
}

.post-content p {
  margin-bottom: 1.5em;
}

.post-content h2,
.post-content h3,
.post-content h4 {
  font-family: var(--ff-heading);
  margin-top: 2em;
  margin-bottom: 0.75em;
  padding-left: var(--sp-4);
  border-left: 3px solid var(--clr-secondary);
}

.post-content h2 {
  font-size: clamp(1.4rem, 3.5vw, 2rem);
}

.post-content h3 {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
}

.post-content h4 {
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
}

.post-content blockquote {
  margin: var(--sp-8) 0;
  padding: var(--sp-6) var(--sp-8);
  border-left: 4px solid var(--clr-secondary);
  background: var(--clr-surface-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--clr-accent-light);
}

.post-content blockquote p:last-child {
  margin-bottom: 0;
}

.post-content img {
  border-radius: var(--radius-md);
  max-width: 100%;
  height: auto;
  box-shadow: var(--shadow-md);
  margin-block: var(--sp-4);
}

.post-content ul,
.post-content ol {
  margin-bottom: 1.5em;
  padding-left: var(--sp-6);
}

.post-content ul {
  list-style: none;
}

.post-content ul li {
  position: relative;
  padding-left: var(--sp-6);
  margin-bottom: var(--sp-3);
}

.post-content ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--clr-secondary);
  border-radius: 50%;
}

.post-content ol {
  list-style: none;
  counter-reset: ol-counter;
}

.post-content ol li {
  position: relative;
  padding-left: var(--sp-8);
  margin-bottom: var(--sp-3);
  counter-increment: ol-counter;
}

.post-content ol li::before {
  content: counter(ol-counter);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  color: var(--clr-secondary);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(153, 47, 247, 0.15);
  border-radius: var(--radius-full);
}

.post-content code {
  font-family: var(--ff-mono);
  font-size: 0.88em;
  background: var(--clr-surface-dark);
  border-radius: var(--radius-sm);
  padding: 0.15em 0.4em;
  border: 1px solid var(--clr-border);
}

.post-content pre code {
  display: block;
  background: var(--clr-surface-dark);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--sp-6);
  overflow-x: auto;
  font-size: var(--fs-sm);
}

.post-content a {
  color: var(--clr-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--transition-fast);
}

.post-content a:hover {
  color: var(--clr-accent-light);
}

/* ==========================================================================
   12. Social Share
   ========================================================================== */

.social-share {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding-block: var(--sp-8);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  margin-block: var(--sp-8);
}

.social-share__label {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--clr-text-secondary);
  margin-right: var(--sp-2);
}

.social-share__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-secondary);
  transition: transform var(--transition-fast),
              box-shadow var(--transition-base),
              color var(--transition-fast),
              border-color var(--transition-fast);
}

.social-share__btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.social-share__btn svg {
  width: 18px;
  height: 18px;
}

.social-share__btn--twitter:hover  { color: #1da1f2; border-color: #1da1f2; }
.social-share__btn--facebook:hover { color: #4267b2; border-color: #4267b2; }
.social-share__btn--linkedin:hover { color: #0077b5; border-color: #0077b5; }
.social-share__btn--reddit:hover   { color: #ff4500; border-color: #ff4500; }
.social-share__btn--copy:hover     { color: var(--clr-success); border-color: var(--clr-success); }

/* ==========================================================================
   13. Author Bio
   ========================================================================== */

.author-bio {
  display: flex;
  gap: var(--sp-6);
  padding: var(--sp-8);
  background: var(--clr-surface-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  margin-block: var(--sp-12);
}

.author-bio__avatar {
  flex-shrink: 0;
}

.author-bio__avatar img {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  border: 3px solid transparent;
  background-image: var(--clr-gradient);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}

.author-bio__name {
  font-family: var(--ff-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  margin-bottom: var(--sp-2);
}

.author-bio__text {
  font-size: var(--fs-sm);
  color: var(--clr-text-secondary);
  line-height: var(--lh-body);
}

.author-bio__links {
  display: flex;
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

.author-bio__links a {
  color: var(--clr-text-secondary);
  transition: color var(--transition-fast);
}

.author-bio__links a:hover {
  color: var(--clr-secondary);
}

@media (max-width: 575px) {
  .author-bio {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

/* ==========================================================================
   14. Related Posts
   ========================================================================== */

.related-posts {
  padding-block: var(--sp-12);
}

.related-posts__title {
  font-family: var(--ff-heading);
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  margin-bottom: var(--sp-8);
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.related-posts__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--clr-border);
}

.related-posts .card-grid {
  grid-template-columns: 1fr;
}

@media (min-width: 576px) {
  .related-posts .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
}

.related-posts .post-card__title {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
}

/* ==========================================================================
   15. Comments
   ========================================================================== */

.comments-area {
  padding-block: var(--sp-12);
}

.comments-area__title {
  font-family: var(--ff-heading);
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  margin-bottom: var(--sp-8);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.comments-area__title svg {
  width: 28px;
  height: 28px;
  color: var(--clr-secondary);
}

.comment-list {
  margin-bottom: var(--sp-12);
}

.tcl-comment {
  margin-bottom: var(--sp-6);
}

.tcl-comment .comment-body {
  background: var(--clr-surface-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--clr-border);
  border-left: 3px solid var(--clr-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--sp-6);
}

.comment-header {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}

.comment-avatar-img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  border: 2px solid var(--clr-border);
}

.comment-author {
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-base);
  display: block;
}

.comment-date {
  font-size: var(--fs-xs);
  color: var(--clr-text-secondary);
}

.comment-content {
  font-size: var(--fs-sm);
  color: var(--clr-text-secondary);
  margin-bottom: var(--sp-3);
}

.comment-content p:last-child {
  margin-bottom: 0;
}

.comment-awaiting {
  font-size: var(--fs-sm);
  color: var(--clr-cat-crypto);
  font-style: italic;
  margin-bottom: var(--sp-3);
}

.comment-footer {
  display: flex;
  gap: var(--sp-4);
}

.reply-link a,
.edit-link a {
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--clr-secondary);
  transition: color var(--transition-fast);
}

.reply-link a:hover,
.edit-link a:hover {
  color: var(--clr-accent-light);
}

/* Nested comments */
.tcl-comment .children {
  margin-left: var(--sp-8);
  padding-left: var(--sp-6);
  border-left: 1px solid var(--clr-border);
  margin-top: var(--sp-6);
}

@media (max-width: 575px) {
  .tcl-comment .children {
    margin-left: var(--sp-3);
    padding-left: var(--sp-3);
  }
}

/* Comment Form */
.comment-respond {
  background: var(--clr-surface-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
}

.comment-respond .comment-reply-title {
  font-family: var(--ff-heading);
  font-size: var(--fs-xl);
  margin-bottom: var(--sp-6);
}

.comment-form label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  margin-bottom: var(--sp-2);
  color: var(--clr-text-secondary);
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  background: var(--clr-surface-dark);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  font-size: var(--fs-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  margin-bottom: var(--sp-4);
}

.comment-form input:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--clr-secondary);
  box-shadow: 0 0 0 3px rgba(153, 47, 247, 0.2);
}

.comment-form textarea {
  min-height: 150px;
  resize: vertical;
}

.comment-form .submit {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-8);
  background: var(--clr-gradient);
  color: #fff;
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: box-shadow var(--transition-base), transform var(--transition-fast);
}

.comment-form .submit:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-1px);
}

/* ==========================================================================
   16. Sidebar
   ========================================================================== */

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--sp-8));
  align-self: start;
}

.widget {
  background: var(--clr-surface-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  margin-bottom: var(--sp-6);
}

.widget-title {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-text-secondary);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--clr-secondary);
}

/* Newsletter Widget */
.widget-newsletter {
  border-image: var(--clr-gradient) 1;
  border-width: 1px;
  border-style: solid;
  border-radius: 0;
  position: relative;
  overflow: hidden;
}

.widget-newsletter::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: var(--clr-gradient);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask-composite: xor;
  pointer-events: none;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.newsletter-form input[type="email"] {
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  background: var(--clr-surface-dark);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  font-size: var(--fs-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.newsletter-form input[type="email"]:focus {
  outline: none;
  border-color: var(--clr-secondary);
  box-shadow: 0 0 0 3px rgba(153, 47, 247, 0.2);
}

.newsletter-form button {
  padding: var(--sp-3) var(--sp-4);
  background: var(--clr-gradient);
  color: #fff;
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition-base);
}

.newsletter-message {
  display: block;
  font-size: var(--fs-sm);
  margin-top: var(--sp-2);
}

.newsletter-message.success {
  color: var(--clr-success);
}

.newsletter-message.error {
  color: var(--clr-error);
}

.newsletter-form button:hover {
  box-shadow: var(--shadow-glow);
}

/* Recent Posts Widget */
.widget-recent-posts li {
  display: flex;
  gap: var(--sp-3);
  padding-block: var(--sp-3);
  border-bottom: 1px solid var(--clr-border);
}

.widget-recent-posts li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.widget-recent-posts__thumb {
  flex-shrink: 0;
  width: 64px;
  height: 48px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.widget-recent-posts__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.widget-recent-posts__title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  line-height: 1.4;
}

.widget-recent-posts__title a {
  color: var(--clr-text-primary);
  transition: color var(--transition-fast);
}

.widget-recent-posts__title a:hover {
  color: var(--clr-secondary);
}

.widget-recent-posts__date {
  font-size: var(--fs-xs);
  color: var(--clr-text-secondary);
  margin-top: var(--sp-1);
}

/* Categories Widget */
.sidebar-categories {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-categories li {
  margin-bottom: var(--sp-2);
}

.sidebar-cat-link {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  background: var(--clr-surface-dark);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.sidebar-cat-link:hover {
  background: rgba(153, 47, 247, 0.12);
  transform: translateX(4px);
}

.sidebar-cat-link svg {
  width: 16px;
  height: 16px;
  opacity: 0.6;
  flex-shrink: 0;
}

.sidebar-cat-name {
  flex: 1;
}

.sidebar-cat-count {
  font-size: var(--fs-xs);
  color: var(--clr-text-secondary);
  background: rgba(153, 47, 247, 0.15);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* Trending Widget */
.trending-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: none;
}

.trending-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-4);
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--clr-border);
}

.trending-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.trending-rank {
  flex-shrink: 0;
  font-family: var(--ff-heading);
  font-size: 1.5rem;
  font-weight: var(--fw-bold);
  line-height: 1;
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-width: 32px;
}

.trending-info {
  flex: 1;
  min-width: 0;
}

.trending-title {
  display: block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-text-primary);
  line-height: 1.4;
  transition: color var(--transition-fast);
  text-decoration: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.trending-title:hover {
  color: var(--clr-secondary);
}

.trending-meta {
  display: block;
  font-size: var(--fs-xs);
  color: var(--clr-text-secondary);
  margin-top: var(--sp-1);
}

/* ==========================================================================
   16b. Search Form
   ========================================================================== */

.search-form-inner {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-2) var(--sp-4);
  transition: border-color var(--transition-fast);
}

.search-form-inner:focus-within {
  border-color: var(--clr-secondary);
  box-shadow: var(--shadow-glow);
}

.search-icon {
  flex-shrink: 0;
  color: var(--clr-text-secondary);
}

.search-field {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--clr-text-primary);
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  padding: var(--sp-2);
  outline: none;
}

.search-field::placeholder {
  color: var(--clr-text-secondary);
  opacity: 0.6;
}

.search-submit {
  flex-shrink: 0;
  background: var(--clr-gradient);
  color: #fff;
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--sp-2) var(--sp-4);
  cursor: pointer;
  transition: box-shadow var(--transition-base);
}

.search-submit:hover {
  box-shadow: var(--shadow-glow);
}

/* ==========================================================================
   16c. Table of Contents (JS-generated)
   ========================================================================== */

.toc {
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  margin-bottom: var(--sp-8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.toc-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  font-family: var(--ff-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--clr-text-primary);
  cursor: pointer;
  padding: 0;
  margin-bottom: var(--sp-4);
}

.toc-toggle::after {
  content: "\25B2";
  font-size: var(--fs-xs);
  transition: transform var(--transition-fast);
}

.toc-toggle[aria-expanded="false"]::after {
  transform: rotate(180deg);
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: toc-counter;
}

.toc-item {
  counter-increment: toc-counter;
  margin-bottom: var(--sp-2);
}

.toc-item.toc-h3 {
  padding-left: var(--sp-6);
}

.toc-link {
  display: block;
  padding: var(--sp-1) 0;
  color: var(--clr-text-secondary);
  font-size: var(--fs-sm);
  transition: color var(--transition-fast);
  text-decoration: none;
}

.toc-link::before {
  content: counter(toc-counter) ". ";
  color: var(--clr-secondary);
  font-weight: var(--fw-semibold);
}

.toc-link:hover,
.toc-link.active {
  color: var(--clr-secondary);
}

.toc-link.active {
  font-weight: var(--fw-medium);
}

/* ==========================================================================
   17. Search Overlay
   ========================================================================== */

.search-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 20vh;
  background: var(--clr-overlay);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.search-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.search-overlay__inner {
  width: 100%;
  max-width: 640px;
  padding-inline: var(--sp-4);
}

.search-overlay__input {
  width: 100%;
  padding: var(--sp-6);
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--clr-secondary);
  font-family: var(--ff-heading);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: var(--fw-bold);
  color: var(--clr-text-primary);
  outline: none;
}

.search-overlay__input::placeholder {
  color: var(--clr-text-secondary);
  opacity: 0.5;
}

.search-overlay__close {
  position: absolute;
  top: var(--sp-6);
  right: var(--sp-6);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-text-secondary);
  font-size: 1.5rem;
  border-radius: var(--radius-full);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.search-overlay__close:hover {
  color: var(--clr-text-primary);
  background: rgba(153, 47, 247, 0.15);
}

/* ==========================================================================
   18. Footer
   ========================================================================== */

.site-footer {
  background: #050030;
  border-top: 1px solid transparent;
  border-image: var(--clr-gradient) 1;
  padding-top: var(--sp-16);
  padding-bottom: var(--sp-8);
  margin-top: var(--sp-16);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-10);
  margin-bottom: var(--sp-12);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-col__title {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--sp-4);
  color: var(--clr-text-primary);
}

.footer-col p {
  font-size: var(--fs-sm);
  color: var(--clr-text-secondary);
}

.footer-col ul li {
  margin-bottom: var(--sp-2);
}

.footer-col ul a {
  font-size: var(--fs-sm);
  color: var(--clr-text-secondary);
  transition: color var(--transition-fast);
}

.footer-col ul a:hover {
  color: var(--clr-secondary);
}

.footer-social {
  display: flex;
  gap: var(--sp-3);
  margin-top: var(--sp-6);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-secondary);
  transition: color var(--transition-fast),
              border-color var(--transition-fast),
              transform var(--transition-fast);
}

.footer-social a:hover {
  color: var(--clr-secondary);
  border-color: var(--clr-secondary);
  transform: translateY(-2px);
}

.footer-social a svg {
  width: 16px;
  height: 16px;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--sp-8);
  border-top: 1px solid var(--clr-border);
  font-size: var(--fs-xs);
  color: var(--clr-text-secondary);
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: var(--sp-8);
  right: var(--sp-8);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-gradient);
  color: #fff;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-base),
              visibility var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base);
  z-index: var(--z-sticky);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-2px);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ==========================================================================
   19. Pagination
   ========================================================================== */

/* ---------- New Pagination ---------- */

.tcl-pagination {
  padding-block: var(--sp-10);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
}

.tcl-pagination__info {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.tcl-pagination__links {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.tcl-pagination__links .page-numbers {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding-inline: var(--sp-3);
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--clr-text-secondary);
  background: var(--clr-surface-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.tcl-pagination__links .page-numbers:hover {
  color: var(--clr-text-primary);
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.tcl-pagination__links .page-numbers.current {
  background: var(--clr-gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(153, 47, 247, 0.35);
}

.tcl-pagination__links .page-numbers.dots {
  background: transparent;
  border: none;
  pointer-events: none;
  min-width: auto;
  padding: 0 var(--sp-1);
}

.tcl-pagination__links .prev,
.tcl-pagination__links .next {
  gap: var(--sp-1);
}

.tcl-pagination__links .prev svg,
.tcl-pagination__links .next svg {
  width: 16px;
  height: 16px;
}

/* Progress bar beneath pagination */
.tcl-pagination__progress {
  width: 160px;
  height: 3px;
  background: var(--clr-surface-card);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: var(--sp-2);
}

.tcl-pagination__bar {
  height: 100%;
  background: var(--clr-gradient);
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

/* Legacy .pagination fallback */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding-block: var(--sp-12);
}

.pagination .page-numbers {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding-inline: var(--sp-3);
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--clr-text-secondary);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.pagination .page-numbers:hover {
  color: var(--clr-text-primary);
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-glow);
}

.pagination .page-numbers.current {
  background: var(--clr-gradient);
  color: #fff;
  border-color: transparent;
}

/* ==========================================================================
   20. Archive Header
   ========================================================================== */

.archive-header {
  padding-block: var(--sp-12) var(--sp-8);
  background: radial-gradient(ellipse at 50% 0%, rgba(153, 47, 247, 0.08) 0%, transparent 60%);
}

.archive-header__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: rgba(153, 47, 247, 0.12);
  border-radius: var(--radius-lg);
  margin-bottom: var(--sp-4);
  color: var(--clr-secondary);
}

.archive-header__icon svg {
  width: 28px;
  height: 28px;
}

.archive-header__title {
  font-size: clamp(1.8rem, 4.5vw, 2.8rem);
  margin-bottom: var(--sp-3);
}

.archive-header__description {
  font-size: var(--fs-lg);
  color: var(--clr-text-secondary);
  max-width: 600px;
}

/* ==========================================================================
   21. 404 Page
   ========================================================================== */

.error-404 {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  padding: var(--sp-12) var(--sp-4);
}

.error-404__code {
  font-family: var(--ff-heading);
  font-size: clamp(6rem, 15vw, 12rem);
  font-weight: var(--fw-bold);
  line-height: 1;
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--sp-4);
}

.error-404__flask {
  width: 80px;
  height: 80px;
  margin-bottom: var(--sp-6);
  color: var(--clr-secondary);
  animation: float 4s ease-in-out infinite;
}

.error-404__title {
  font-size: clamp(1.3rem, 3vw, 2rem);
  margin-bottom: var(--sp-4);
  animation: glitch 3s infinite;
}

.error-404__text {
  color: var(--clr-text-secondary);
  margin-bottom: var(--sp-8);
  max-width: 480px;
}

.error-404__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-8);
  background: var(--clr-gradient);
  color: #fff;
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  transition: box-shadow var(--transition-base), transform var(--transition-fast);
}

.error-404__btn:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-2px);
}

/* ==========================================================================
   22. Page Template
   ========================================================================== */

.page-template {
  padding-block: var(--sp-12);
}

.page-template__content {
  max-width: var(--content-max);
  margin-inline: auto;
}

/* Contact Form */
.contact-form {
  max-width: 600px;
}

.contact-form .form-group {
  margin-bottom: var(--sp-6);
}

.contact-form label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  margin-bottom: var(--sp-2);
  color: var(--clr-text-secondary);
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  background: var(--clr-surface-dark);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  font-size: var(--fs-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--clr-secondary);
  box-shadow: 0 0 0 3px rgba(153, 47, 247, 0.2);
}

.contact-form textarea {
  min-height: 180px;
  resize: vertical;
}

.contact-form .btn-submit {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-8);
  background: var(--clr-gradient);
  color: #fff;
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: box-shadow var(--transition-base), transform var(--transition-fast);
}

.contact-form .btn-submit:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-1px);
}

/* About page alternating sections */
.about-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-8);
  align-items: center;
  padding-block: var(--sp-12);
  border-bottom: 1px solid var(--clr-border);
}

@media (min-width: 768px) {
  .about-section {
    grid-template-columns: 1fr 1fr;
  }

  .about-section:nth-child(even) .about-section__media {
    order: -1;
  }
}

.about-section__text h2 {
  margin-bottom: var(--sp-4);
}

.about-section__text p {
  color: var(--clr-text-secondary);
}

.about-section__media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   23. Utility Classes
   ========================================================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-gradient {
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.glow {
  box-shadow: var(--shadow-glow);
}

.glass {
  background: var(--clr-surface-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--clr-border);
}

.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   24. Mobile Menu
   ========================================================================== */

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 85vw);
  z-index: calc(var(--z-header) + 1);
  background: var(--clr-body-bg);
  border-left: 1px solid var(--clr-border);
  padding: var(--sp-20) var(--sp-8) var(--sp-8);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
}

.mobile-menu.is-active {
  transform: translateX(0);
}

.mobile-menu__backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-header);
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-menu__backdrop.is-active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__close {
  position: absolute;
  top: var(--sp-4);
  right: var(--sp-4);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-text-secondary);
  border-radius: var(--radius-full);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.mobile-menu__close:hover {
  color: var(--clr-text-primary);
  background: rgba(153, 47, 247, 0.15);
}

.mobile-menu__nav {
  flex: 1;
}

.mobile-menu__nav a {
  display: block;
  padding: var(--sp-4) 0;
  font-family: var(--ff-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--clr-text-primary);
  border-bottom: 1px solid var(--clr-border);
  transition: color var(--transition-fast);
  min-height: 48px;
}

.mobile-menu__nav a:hover {
  color: var(--clr-secondary);
}

.mobile-menu__social {
  display: flex;
  gap: var(--sp-3);
  padding-top: var(--sp-8);
  border-top: 1px solid var(--clr-border);
  margin-top: auto;
}

.mobile-menu__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-secondary);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.mobile-menu__social a:hover {
  color: var(--clr-secondary);
  border-color: var(--clr-secondary);
}

.mobile-menu__social a svg {
  width: 18px;
  height: 18px;
}

/* ==========================================================================
   25. Accessibility
   ========================================================================== */

:focus-visible {
  outline: 2px solid var(--clr-secondary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(153, 47, 247, 0.25);
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--sp-4);
  z-index: var(--z-modal);
  padding: var(--sp-3) var(--sp-6);
  background: var(--clr-gradient);
  color: #fff;
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .fade-in-up {
    opacity: 1;
    transform: none;
  }
}

/* High Contrast */
@media (forced-colors: active) {
  .post-card,
  .widget,
  .author-bio,
  .tcl-comment .comment-body,
  .comment-respond {
    border: 2px solid CanvasText;
  }

  .hero__cta,
  .error-404__btn,
  .comment-form .submit,
  .contact-form .btn-submit,
  .newsletter-form button {
    border: 2px solid ButtonText;
  }
}

/* ==========================================================================
   26. Print Styles
   ========================================================================== */

@media print {
  .site-header,
  .site-footer,
  .sidebar,
  .primary-nav,
  .mobile-menu,
  .mobile-menu__backdrop,
  .search-overlay,
  .reading-progress,
  .back-to-top,
  .social-share,
  .related-posts,
  .comment-respond,
  .header-actions,
  .menu-toggle,
  .pagination,
  .tcl-pagination,
  .category-strip,
  .hero,
  .hero__cta,
  .error-404__btn,
  #particles-canvas {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
    font-size: 12pt;
  }

  .site-content {
    padding-top: 0;
  }

  .post-content,
.entry-content {
    max-width: 100%;
  }

  .post-content a {
    color: #000;
    text-decoration: underline;
  }

  .post-content a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #555;
  }

  .post-content img {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .post-card {
    break-inside: avoid;
    border: 1px solid #ccc;
    box-shadow: none;
    backdrop-filter: none;
  }

  h1, h2, h3, h4, h5, h6 {
    break-after: avoid;
    color: #000;
  }
}