/* =========================================================
   style.css — Market Vault Media Design System
   Brand: Navy (#0d1117 bg) + Gold (#f0b429) + White
   Display: Cabinet Grotesk | Body: Satoshi
   ========================================================= */

/* === FONT LOADING === */
@import url('https://api.fontshare.com/v2/css?f[]=cabinet-grotesk@400,500,700,800,900&f[]=satoshi@300,400,500,700&display=swap');

/* === DESIGN TOKENS === */
:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.75vw,   1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem + 4vw,      5rem);
  --text-hero: clamp(3rem,     0.5rem + 7vw,    7rem);

  /* Spacing (4px 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;
  --space-32: 8rem;

  /* Radius */
  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.875rem;
  --radius-xl:   1.25rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 320ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Inter', sans-serif;

  /* Content widths */
  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:    1200px;
}

/* === DARK THEME (Primary — brand is dark-first) === */
:root,
[data-theme='dark'] {
  --color-bg:               #0d1117;
  --color-surface:          #161b24;
  --color-surface-2:        #1c2333;
  --color-surface-offset:   #1a2130;
  --color-divider:          #21293b;
  --color-border:           #2d3a52;

  --color-text:             #f0f4fc;
  --color-text-muted:       #8899b4;
  --color-text-faint:       #4a5878;
  --color-text-inverse:     #0d1117;

  /* Gold accent */
  --color-primary:          #f0b429;
  --color-primary-hover:    #e6a010;
  --color-primary-active:   #c88800;
  --color-primary-highlight: rgba(240,180,41,0.12);

  --color-success:  #2ea44f;
  --color-error:    #f85149;
  --color-warning:  #d29922;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
  --shadow-gold: 0 0 24px rgba(240,180,41,0.18);
}

/* === LIGHT THEME === */
[data-theme='light'] {
  --color-bg:               #f6f7f9;
  --color-surface:          #ffffff;
  --color-surface-2:        #f0f2f5;
  --color-surface-offset:   #e8eaf0;
  --color-divider:          #dde1ea;
  --color-border:           #c9cedb;

  --color-text:             #0d1117;
  --color-text-muted:       #4a5578;
  --color-text-faint:       #8899b4;
  --color-text-inverse:     #f0f4fc;

  --color-primary:          #c88800;
  --color-primary-hover:    #a87000;
  --color-primary-active:   #885800;
  --color-primary-highlight: rgba(200,136,0,0.1);

  --color-success:  #1a7f37;
  --color-error:    #cf222e;
  --color-warning:  #9a6700;

  --shadow-sm: 0 1px 3px rgba(13,17,23,0.08);
  --shadow-md: 0 4px 16px rgba(13,17,23,0.10);
  --shadow-lg: 0 12px 40px rgba(13,17,23,0.14);
  --shadow-gold: 0 0 24px rgba(200,136,0,0.10);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg:               #f6f7f9;
    --color-surface:          #ffffff;
    --color-surface-2:        #f0f2f5;
    --color-surface-offset:   #e8eaf0;
    --color-divider:          #dde1ea;
    --color-border:           #c9cedb;
    --color-text:             #0d1117;
    --color-text-muted:       #4a5578;
    --color-text-faint:       #8899b4;
    --color-text-inverse:     #f0f4fc;
    --color-primary:          #c88800;
    --color-primary-hover:    #a87000;
    --color-primary-active:   #885800;
    --color-primary-highlight: rgba(200,136,0,0.1);
    --shadow-sm: 0 1px 3px rgba(13,17,23,0.08);
    --shadow-md: 0 4px 16px rgba(13,17,23,0.10);
    --shadow-lg: 0 12px 40px rgba(13,17,23,0.14);
    --shadow-gold: 0 0 24px rgba(200,136,0,0.10);
  }
}

/* === GLOBAL LAYOUT === */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-16));
}
.container--narrow { max-width: var(--content-narrow); }
.container--default { max-width: var(--content-default); }

/* === NAVIGATION === */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-bg) 90%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-4);
}

.site-nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.site-nav__logo-mark {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
}

.site-nav__logo-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
  line-height: 1.1;
  white-space: nowrap;
}

.site-nav__logo-text span {
  display: block;
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: var(--font-body);
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.site-nav__links a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  padding-block: var(--space-2);
}

.site-nav__links a:hover,
.site-nav__links a.active {
  color: var(--color-primary);
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text);
}

.nav-mobile-toggle:hover { background: var(--color-surface); }

@media (max-width: 768px) {
  .site-nav__links { display: none; }
  .nav-mobile-toggle { display: flex; }

  .site-nav__links.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-divider);
    padding: var(--space-4) var(--space-5) var(--space-5);
  }

  .site-nav__links.is-open a {
    font-size: var(--text-base);
    padding-block: var(--space-2);
  }
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #0d1117;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-gold);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline-gold {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline-gold:hover {
  background: var(--color-primary);
  color: #0d1117;
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: transparent;
}
.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); }

/* === GOLD BADGE / TAG === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.badge-gold {
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  border: 1px solid color-mix(in oklab, var(--color-primary) 30%, transparent);
}

/* === SECTION UTILITIES === */
section { padding-block: clamp(var(--space-12), 7vw, var(--space-24)); }

.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-heading {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-2xl);
  color: var(--color-text);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-4);
}

.section-subheading {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.5;
  max-width: 52ch;
}

/* Divider line */
.gold-rule {
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

/* === HERO === */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 70% at 70% 40%,
    color-mix(in oklab, var(--color-primary) 8%, transparent) 0%,
    transparent 70%);
  pointer-events: none;
}

.hero__grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-divider) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.35;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.hero__eyebrow-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero__eyebrow-text {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--text-hero);
  color: var(--color-text);
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: var(--space-6);
}

.hero__title .gold { color: var(--color-primary); }

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.55;
  max-width: 48ch;
  margin-bottom: var(--space-8);
}

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

.hero__stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  flex-wrap: wrap;
}

.hero__stat-value {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.hero__stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: var(--space-1);
}

/* === VIDEO CARDS === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr));
  gap: var(--space-6);
}

.video-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-divider);
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

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

.video-card__thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-surface-2);
}

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

.video-card:hover .video-card__thumb img { transform: scale(1.04); }

.video-card__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13,17,23,0.45);
  opacity: 0;
  transition: opacity var(--transition-interactive);
}

.video-card:hover .video-card__play { opacity: 1; }

.video-card__play-icon {
  width: 56px; height: 56px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-card__play-icon svg { fill: #0d1117; margin-left: 3px; }

.video-card__body {
  padding: var(--space-5);
}

.video-card__tag {
  margin-bottom: var(--space-3);
}

.video-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.video-card__meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* === FEATURED VIDEO (LARGE) === */
.featured-video {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-divider);
}

.featured-video__embed {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
}

.featured-video__embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* === BLOG CARDS === */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
  gap: var(--space-6);
}

.blog-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-divider);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.blog-card__img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-surface-2);
}

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

.blog-card:hover .blog-card__img img { transform: scale(1.03); }

.blog-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: var(--space-3);
}

.blog-card__category {
  display: inline-block;
}

.blog-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
  line-height: 1.25;
  letter-spacing: -0.02em;
  flex: 1;
}

.blog-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.blog-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
}

.blog-card__author {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.blog-card__read-more {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.03em;
}

/* === EMAIL SIGNUP === */
.email-section {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 5vw, var(--space-16));
  text-align: center;
  position: relative;
  overflow: hidden;
}

.email-section::before {
  content: '';
  position: absolute;
  top: -60%;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in oklab, var(--color-primary) 10%, transparent), transparent 70%);
  pointer-events: none;
}

.email-form {
  display: flex;
  gap: var(--space-3);
  max-width: 440px;
  margin: var(--space-6) auto 0;
  flex-wrap: wrap;
  justify-content: center;
}

.email-input {
  flex: 1;
  min-width: 220px;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  outline: none;
}

.email-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}

.email-input::placeholder { color: var(--color-text-faint); }

.email-disclaimer {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
}

.signup-success {
  display: none;
  font-size: var(--text-sm);
  color: var(--color-success);
  font-weight: 600;
  margin-top: var(--space-3);
}

/* === ABOUT PREVIEW === */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}

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

.about-visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-surface);
}

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

.about-visual__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    color-mix(in oklab, var(--color-bg) 60%, transparent),
    transparent 60%);
}

.about-visual__badge {
  position: absolute;
  bottom: var(--space-5);
  left: var(--space-5);
  background: var(--color-primary);
  color: #0d1117;
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-base);
}

.platform-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.platform-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--color-text-muted);
  text-transform: uppercase;
  transition: all var(--transition-interactive);
}

.platform-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.platform-link svg { width: 14px; height: 14px; }

/* === FOOTER === */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-8);
  align-items: start;
}

@media (max-width: 600px) {
  .footer-inner { grid-template-columns: 1fr; }
}

.footer-brand__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  max-width: 36ch;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-6);
  list-style: none;
}

.footer-links a {
  text-decoration: none;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
}

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

.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

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

.footer-social a {
  width: 34px; height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  color: var(--color-text-faint);
  transition: all var(--transition-interactive);
  text-decoration: none;
}

.footer-social a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* === PAGE HEADER (inner pages) === */
.page-header {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
  border-bottom: 1px solid var(--color-divider);
}

/* === UTILITIES === */
.text-gold { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }
.font-display { font-family: var(--font-display); }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  z-index: 9999;
  background: var(--color-primary);
  color: #0d1117;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: var(--text-sm);
  text-decoration: none;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: all var(--transition-interactive);
}
.skip-link:focus { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* YouTube embed wrapper (videos page) */
.yt-embed-wrap {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.yt-embed-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Video section heading groups */
.videos-section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--color-text);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

/* Shorts grid */
.shorts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr));
  gap: var(--space-5);
}

.short-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-divider);
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

.short-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.short-card__embed {
  position: relative;
  aspect-ratio: 9/16;
  background: #000;
}
.short-card__embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.short-card__body { padding: var(--space-4); }
.short-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-text);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

/* About page */
.about-hero { text-align: center; }
.about-mission {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 4vw, var(--space-12));
}
.timeline { list-style: none; }
.timeline li {
  display: flex;
  gap: var(--space-5);
  padding-bottom: var(--space-6);
  position: relative;
}
.timeline li:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 32px;
  bottom: 0;
  width: 2px;
  background: var(--color-divider);
}
.timeline__dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary-highlight);
  border: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 800;
}
.timeline__content h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.timeline__content p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Topics / niche pillars */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(260px, 100%), 1fr));
  gap: var(--space-5);
}

.pillar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.pillar-card__icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--color-primary);
}

.pillar-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.pillar-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  max-width: none;
}

/* Blog article layout */
.blog-hero-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: var(--space-10);
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.blog-hero-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}
.blog-hero-card__img {
  background: var(--color-surface-2);
  overflow: hidden;
}
.blog-hero-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.blog-hero-card:hover .blog-hero-card__img img { transform: scale(1.03); }
.blog-hero-card__body {
  padding: clamp(var(--space-6), 3vw, var(--space-10));
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-4);
}
.blog-hero-card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--color-text);
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.blog-hero-card__excerpt {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 44ch;
}

@media (max-width: 700px) {
  .blog-hero-card { grid-template-columns: 1fr; }
  .blog-hero-card__img { aspect-ratio: 16/9; }
}

/* Filter tabs */
.filter-tabs {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}
.filter-tab {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  background: transparent;
  text-transform: uppercase;
  transition: all var(--transition-interactive);
}
.filter-tab:hover,
.filter-tab.active {
  background: var(--color-primary);
  color: #0d1117;
  border-color: var(--color-primary);
}

/* ===  RESPONSIVE NAV POSITION === */
.site-nav { position: sticky; }