/* ============================================
   THE GRIND GUIDE — Main Stylesheet
   A multi-niche blog: Finance & Health
   ============================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700;800&family=JetBrains+Mono:wght@400&display=swap');

/* ============================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
  /* ── Primary Colors ── */
  --color-primary: #1a56db;
  --color-primary-hover: #1648b8;
  --color-primary-light: rgba(26, 86, 219, 0.1);
  --color-secondary: #059669;
  --color-secondary-hover: #047857;
  --color-secondary-light: rgba(5, 150, 105, 0.1);

  /* ── Category Tags ── */
  --color-finance: #2563eb;
  --color-finance-light: rgba(37, 99, 235, 0.1);
  --color-health: #16a34a;
  --color-health-light: rgba(22, 163, 74, 0.1);

  /* ── Light Mode (default) ── */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --bg-card: #ffffff;
  --text-primary: #1f2937;
  --text-secondary: #4b5563;
  --text-tertiary: #6b7280;
  --text-inverse: #ffffff;
  --border-color: #e5e7eb;
  --border-hover: #d1d5db;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.12);

  /* ── Typography ── */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* ── Font Sizes ── */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

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

  /* ── Layout ── */
  --max-width: 1200px;
  --article-width: 720px;
  --sidebar-width: 300px;
  --nav-height: 72px;
  --border-radius-sm: 4px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  --border-radius-full: 9999px;

  /* ── Transitions ── */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* ── Reading Progress ── */
  --progress-height: 3px;
  --progress-color: var(--color-primary);
}

/* ── Dark Mode ── */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;
  --text-inverse: #0f172a;
  --border-color: #334155;
  --border-hover: #475569;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.6);
  --progress-color: #3b82f6;
}

/* ============================================
   2. RESET & BASE
   ============================================ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   3. READING PROGRESS BAR
   ============================================ */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: var(--progress-height);
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  z-index: 1001;
  transition: width 50ms linear;
}

/* ============================================
   4. NAVIGATION
   ============================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.9);
  transition: background var(--transition-base), border-color var(--transition-base);
}

[data-theme="dark"] .navbar {
  background: rgba(15, 23, 42, 0.9);
}

.navbar__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.navbar__logo:hover {
  color: var(--color-primary);
}

.navbar__logo img {
  height: 36px;
  width: auto;
}

.navbar__logo-icon {
  font-size: var(--text-2xl);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.navbar__link {
  position: relative;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
}

.navbar__link:hover,
.navbar__link--active {
  color: var(--color-primary);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
  border-radius: 1px;
}

.navbar__link:hover::after,
.navbar__link--active::after {
  width: 100%;
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* ── Theme Toggle ── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
  font-size: var(--text-xl);
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon,
:root:not([data-theme]) .theme-toggle .icon-moon {
  display: block;
}

/* ── Mobile Menu Toggle ── */
.navbar__menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
  background: none;
  border: none;
  cursor: pointer;
}

.navbar__menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.navbar__menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar__menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar__menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   5. HERO SECTION
   ============================================ */
.hero {
  position: relative;
  padding: var(--space-24) var(--space-6);
  background: linear-gradient(135deg, #1a56db 0%, #059669 100%);
  overflow: hidden;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 40%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg-primary), transparent);
  pointer-events: none;
}

.hero__container {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border-radius: var(--border-radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: #ffffff;
  margin-bottom: var(--space-6);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  letter-spacing: -0.03em;
}

.hero__title span {
  display: block;
  background: linear-gradient(to right, #fbbf24, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin: 0 auto var(--space-10);
  line-height: 1.6;
}

.hero__buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   6. BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(26, 86, 219, 0.4);
}

.btn--secondary {
  background: var(--color-secondary);
  color: #ffffff;
  border-color: var(--color-secondary);
}

.btn--secondary:hover {
  background: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.4);
}

.btn--outline {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn--ghost:hover {
  background: var(--bg-secondary);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn--finance {
  background: var(--color-finance);
  color: #ffffff;
  border-color: var(--color-finance);
}

.btn--health {
  background: var(--color-health);
  color: #ffffff;
  border-color: var(--color-health);
}

/* ============================================
   7. SECTION LAYOUTS
   ============================================ */
.section {
  padding: var(--space-20) var(--space-6);
}

.section--alt {
  background: var(--bg-secondary);
}

.section__container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.section__subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   8. POST CARDS
   ============================================ */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.post-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

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

.post-card__image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  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(1.05);
}

.post-card__category {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--border-radius-sm);
  color: #ffffff;
}

.post-card__category--finance {
  background: var(--color-finance);
}

.post-card__category--health {
  background: var(--color-health);
}

.post-card__content {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.post-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.post-card__title a {
  color: inherit;
  text-decoration: none;
}

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

.post-card__excerpt {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

.post-card__meta-dot {
  color: var(--border-color);
}

/* ── Featured Posts (horizontal list) ── */
.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.featured-column__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.featured-post {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--border-radius);
  transition: background var(--transition-fast);
  border: 1px solid transparent;
}

.featured-post:hover {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

.featured-post__image {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: var(--border-radius);
  overflow: hidden;
}

.featured-post__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.featured-post__info {
  flex: 1;
  min-width: 0;
}

.featured-post__title {
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
  line-height: 1.4;
}

.featured-post__title a {
  color: inherit;
  text-decoration: none;
}

.featured-post__title a:hover {
  color: var(--color-primary);
}

.featured-post__date {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

/* ============================================
   9. CATEGORY TAGS
   ============================================ */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--border-radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.tag--finance {
  background: var(--color-finance-light);
  color: var(--color-finance);
}

.tag--finance:hover {
  background: var(--color-finance);
  color: #ffffff;
}

.tag--health {
  background: var(--color-health-light);
  color: var(--color-health);
}

.tag--health:hover {
  background: var(--color-health);
  color: #ffffff;
}

/* ============================================
   10. NEWSLETTER SECTION
   ============================================ */
.newsletter {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  padding: var(--space-16) var(--space-6);
  text-align: center;
  border-radius: var(--border-radius-xl);
  margin: 0 var(--space-6);
  position: relative;
  overflow: hidden;
}

.newsletter::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(26, 86, 219, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(5, 150, 105, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.newsletter__content {
  position: relative;
  z-index: 1;
  max-width: 560px;
  margin: 0 auto;
}

.newsletter__icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.newsletter__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: #ffffff;
  margin-bottom: var(--space-3);
}

.newsletter__text {
  font-size: var(--text-lg);
  color: #94a3b8;
  margin-bottom: var(--space-8);
}

.newsletter__form {
  display: flex;
  gap: var(--space-3);
  max-width: 440px;
  margin: 0 auto;
}

.newsletter__input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--border-radius);
  border: 1px solid #334155;
  background: #1e293b;
  color: #f1f5f9;
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
}

.newsletter__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.2);
}

.newsletter__input::placeholder {
  color: #64748b;
}

.newsletter__button {
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.newsletter__button:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 86, 219, 0.4);
}

.newsletter__disclaimer {
  font-size: var(--text-sm);
  color: #64748b;
  margin-top: var(--space-4);
}

/* ============================================
   11. FOOTER
   ============================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-16) var(--space-6) var(--space-8);
  margin-top: auto;
}

.footer__container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer__brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.footer__brand-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  font-size: var(--text-lg);
}

.footer__social-link:hover {
  background: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.footer__column-title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__link {
  display: block;
  font-size: var(--text-base);
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-1) 0;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-color);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

.footer__bottom a {
  color: var(--text-tertiary);
  text-decoration: none;
}

.footer__bottom a:hover {
  color: var(--color-primary);
}

/* ============================================
   12. ARTICLE / POST PAGE
   ============================================ */
.article {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}

.article__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--space-6);
}

.article__breadcrumb a {
  color: var(--text-tertiary);
  text-decoration: none;
}

.article__breadcrumb a:hover {
  color: var(--color-primary);
}

.article__breadcrumb-sep {
  color: var(--border-color);
}

.article__category {
  margin-bottom: var(--space-4);
}

.article__title {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}

.article__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.article__meta-author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.article__meta-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-full);
  object-fit: cover;
}

.article__meta-name {
  font-weight: 600;
  color: var(--text-primary);
}

.article__meta-dot {
  color: var(--border-color);
}

.article__featured-image {
  width: 100%;
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--space-10);
  overflow: hidden;
}

.article__featured-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ── Table of Contents ── */
.article__toc {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
}

.article__toc-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.article__toc-list {
  list-style: none;
}

.article__toc-list li {
  margin-bottom: var(--space-2);
}

.article__toc-list a {
  font-size: var(--text-base);
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.article__toc-list a::before {
  content: '→';
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}

.article__toc-list a:hover {
  color: var(--color-primary);
}

.article__toc-list .toc-h3 {
  padding-left: var(--space-6);
}

/* ── Article Content (Prose) ── */
.article__content {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--text-primary);
}

.article__content h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin: var(--space-12) 0 var(--space-4);
  letter-spacing: -0.02em;
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--border-color);
}

.article__content h3 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin: var(--space-8) 0 var(--space-3);
}

.article__content p {
  margin-bottom: var(--space-5);
}

.article__content ul,
.article__content ol {
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
}

.article__content ul {
  list-style: disc;
}

.article__content ol {
  list-style: decimal;
}

.article__content li {
  margin-bottom: var(--space-2);
}

.article__content strong {
  font-weight: 600;
  color: var(--text-primary);
}

.article__content blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--bg-secondary);
  padding: var(--space-4) var(--space-6);
  margin: var(--space-6) 0;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  font-style: italic;
  color: var(--text-secondary);
}

.article__content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-secondary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--border-radius-sm);
  color: var(--color-primary);
}

.article__content pre {
  background: #1e293b;
  border-radius: var(--border-radius);
  padding: var(--space-6);
  margin: var(--space-6) 0;
  overflow-x: auto;
}

.article__content pre code {
  background: none;
  padding: 0;
  color: #e2e8f0;
  font-size: var(--text-base);
}

.article__content img {
  border-radius: var(--border-radius);
  margin: var(--space-6) 0;
}

.article__content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article__content a:hover {
  color: var(--color-primary-hover);
}

/* ── Key Takeaway Box ── */
.key-takeaway {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
  border: 1px solid var(--color-primary);
  border-radius: var(--border-radius);
  padding: var(--space-6);
  margin: var(--space-6) 0;
}

.key-takeaway__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.key-takeaway p {
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* ── Author Box ── */
.author-box {
  display: flex;
  gap: var(--space-5);
  padding: var(--space-6);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  margin: var(--space-12) 0;
}

.author-box__avatar {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: var(--border-radius-full);
  overflow: hidden;
}

.author-box__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-box__info {
  flex: 1;
}

.author-box__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.author-box__bio {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Share Buttons ── */
.share-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6) 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin: var(--space-6) 0;
}

.share-buttons__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: var(--space-2);
}

.share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
  cursor: pointer;
  font-size: var(--text-lg);
}

.share-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.share-btn--twitter:hover {
  background: #1da1f2;
  color: #ffffff;
  border-color: #1da1f2;
}

.share-btn--facebook:hover {
  background: #1877f2;
  color: #ffffff;
  border-color: #1877f2;
}

.share-btn--linkedin:hover {
  background: #0a66c2;
  color: #ffffff;
  border-color: #0a66c2;
}

.share-btn--copy:hover {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

/* ── Related Posts ── */
.related-posts {
  margin: var(--space-12) 0;
}

.related-posts__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.related-posts__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* ============================================
   13. CATEGORY PAGE
   ============================================ */
.category-header {
  padding: var(--space-16) var(--space-6);
  text-align: center;
  position: relative;
}

.category-header--finance {
  background: linear-gradient(135deg, #1e40af 0%, #1a56db 50%, #3b82f6 100%);
}

.category-header--health {
  background: linear-gradient(135deg, #065f46 0%, #059669 50%, #34d399 100%);
}

.category-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, var(--bg-primary), transparent);
}

.category-header__emoji {
  font-size: var(--text-5xl);
  margin-bottom: var(--space-4);
}

.category-header__title {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: var(--space-3);
}

.category-header__desc {
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  margin: 0 auto;
}

.category-header__count {
  display: inline-flex;
  margin-top: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--border-radius-full);
  font-size: var(--text-sm);
  color: #ffffff;
  font-weight: 500;
}

/* ── Category Posts List ── */
.category-posts {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}

.post-list-item {
  display: flex;
  gap: var(--space-6);
  padding: var(--space-6);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  margin-bottom: var(--space-6);
  background: var(--bg-card);
  transition: all var(--transition-base);
}

.post-list-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-hover);
}

.post-list-item__image {
  flex-shrink: 0;
  width: 240px;
  height: 160px;
  border-radius: var(--border-radius);
  overflow: hidden;
}

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

.post-list-item:hover .post-list-item__image img {
  transform: scale(1.05);
}

.post-list-item__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.post-list-item__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  line-height: 1.3;
}

.post-list-item__title a {
  color: inherit;
  text-decoration: none;
}

.post-list-item__title a:hover {
  color: var(--color-primary);
}

.post-list-item__excerpt {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-list-item__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

/* ============================================
   14. ABOUT PAGE
   ============================================ */
.about-hero {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.about-hero__avatar {
  width: 120px;
  height: 120px;
  border-radius: var(--border-radius-full);
  margin: 0 auto var(--space-6);
  overflow: hidden;
  border: 4px solid var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-light);
}

.about-hero__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.about-hero__tagline {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.about-content {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}

.about-content h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  margin: var(--space-10) 0 var(--space-4);
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
  line-height: 1.8;
}

/* ============================================
   15. CONTACT PAGE
   ============================================ */
.contact-section {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: var(--space-16) var(--space-6);
}

.contact-section__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-3);
}

.contact-section__subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: var(--space-10);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

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

/* ============================================
   16. GOOGLE ADSENSE AD SLOTS
   ============================================ */
.ad-container {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--space-8) 0;
  min-height: 90px;
  overflow: hidden;
}

.ad-container--leaderboard {
  max-width: 728px;
  margin: var(--space-4) auto;
}

.ad-container--in-article {
  margin: var(--space-8) 0;
  padding: var(--space-4) 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.ad-container--sidebar {
  max-width: 300px;
  min-height: 250px;
}

.ad-container--in-feed {
  padding: var(--space-6);
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.ad-label {
  display: block;
  text-align: center;
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
}

/* ============================================
   17. AFFILIATE LINK BOXES
   ============================================ */
.affiliate-box {
  border: 2px solid var(--color-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--space-6);
  margin: var(--space-8) 0;
  background: linear-gradient(135deg, var(--color-primary-light), var(--bg-card));
  position: relative;
}

.affiliate-box__badge {
  position: absolute;
  top: calc(-1 * var(--space-3));
  left: var(--space-4);
  background: var(--color-primary);
  color: #ffffff;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--border-radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.affiliate-box__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  margin-top: var(--space-2);
}

.affiliate-box__desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.affiliate-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.affiliate-link:hover {
  color: var(--color-primary-hover);
  gap: var(--space-3);
}

.disclosure-notice {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  font-style: italic;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

/* ============================================
   18. 404 PAGE
   ============================================ */
.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  padding: var(--space-12) var(--space-6);
}

.error-page__code {
  font-family: var(--font-heading);
  font-size: 8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-4);
}

.error-page__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.error-page__text {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  max-width: 480px;
}

/* ============================================
   19. BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-full);
  background: var(--color-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--transition-base);
  z-index: 999;
  border: none;
}

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

.back-to-top:hover {
  background: var(--color-primary-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ============================================
   20. PRIVACY POLICY / STATIC PAGES
   ============================================ */
.static-page {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}

.static-page__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.static-page__updated {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--space-8);
}

.static-page h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  margin: var(--space-10) 0 var(--space-4);
}

.static-page h3 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  margin: var(--space-6) 0 var(--space-3);
}

.static-page p {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.8;
}

.static-page ul {
  list-style: disc;
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.static-page ul li {
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

/* ============================================
   21. COOKIE CONSENT BANNER
   ============================================ */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  z-index: 1000;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.1);
  transform: translateY(100%);
  transition: transform var(--transition-slow);
}

.cookie-banner.visible {
  transform: translateY(0);
}

.cookie-banner__text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  max-width: 600px;
}

.cookie-banner__text a {
  color: var(--color-primary);
  text-decoration: underline;
}

.cookie-banner__actions {
  display: flex;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* ============================================
   22. UTILITIES
   ============================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.text-center {
  text-align: center;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ── Animations ── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in {
  animation: fadeIn 0.4s ease forwards;
}

/* Staggered animation delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }

/* ── Scroll animation (triggered by JS) ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}