/* ================================================
   AD VALOREM — LANDING PAGE
   Dark, sophisticated hub with 3 direction cards
   ================================================ */

: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,    8rem);

  /* Spacing */
  --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;

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

  /* Colors — Dark palette inspired by existing brand */
  --color-bg:             #0a0b10;
  --color-surface:        #11121a;
  --color-surface-2:      #181a26;
  --color-surface-offset: #1e2033;
  --color-border:         rgba(255, 255, 255, 0.08);
  --color-border-hover:   rgba(255, 255, 255, 0.15);

  --color-text:           #e4e3e0;
  --color-text-muted:     #8a8a94;
  --color-text-faint:     #5a5a66;

  --color-primary:        #6b8aff;
  --color-primary-hover:  #8aa4ff;

  /* Card accent colors */
  --color-syndicate:      #c9a44c;
  --color-syndicate-glow: rgba(201, 164, 76, 0.12);
  --color-aiguy:          #4fa3d1;
  --color-aiguy-glow:     rgba(79, 163, 209, 0.12);
  --color-charity:        #2a9d8f;
  --color-charity-glow:   rgba(42, 157, 143, 0.12);

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

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

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1240px;
}

/* ================================================
   AMBIENT BACKGROUND
   ================================================ */

.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}

.ambient-orb--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(201, 164, 76, 0.15), transparent 70%);
  top: -200px;
  left: -100px;
  animation: float-1 20s ease-in-out infinite;
}

.ambient-orb--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(79, 163, 209, 0.12), transparent 70%);
  top: 30%;
  right: -150px;
  animation: float-2 25s ease-in-out infinite;
}

.ambient-orb--3 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(42, 157, 143, 0.1), transparent 70%);
  bottom: -100px;
  left: 30%;
  animation: float-3 22s ease-in-out infinite;
}

@keyframes float-1 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(40px, 30px); }
  66% { transform: translate(-20px, 50px); }
}
@keyframes float-2 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(-30px, -40px); }
  66% { transform: translate(20px, -20px); }
}
@keyframes float-3 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(30px, -20px); }
  66% { transform: translate(-40px, 10px); }
}

/* ================================================
   HEADER
   ================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) var(--space-6);
  background: rgba(10, 11, 16, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo svg {
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.nav-link:hover {
  color: var(--color-text);
}

.nav-link--cta {
  color: var(--color-bg);
  background: var(--color-text);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: background var(--transition-interactive), transform var(--transition-interactive);
}

.nav-link--cta:hover {
  background: #fff;
  transform: translateY(-1px);
}

/* ================================================
   HERO
   ================================================ */

.hero {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-32) var(--space-6) var(--space-16);
  position: relative;
  overflow: hidden;
}

.hero-video-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: brightness(0.6) saturate(0.7);
}

.hero-video-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 11, 16, 0.5) 0%,
    rgba(10, 11, 16, 0.3) 40%,
    rgba(10, 11, 16, 0.7) 80%,
    rgba(10, 11, 16, 1) 100%
  );
  pointer-events: none;
}

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

.hero-eyebrow {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-faint);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  background: linear-gradient(
    180deg,
    #fff 0%,
    #e4e3e0 40%,
    var(--color-text-muted) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 580px;
  margin: 0 auto;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-text-faint), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 0.8; transform: scaleY(1.2); transform-origin: top; }
}

/* ================================================
   DIRECTION CARDS
   ================================================ */

.directions {
  padding: var(--space-8) var(--space-6) var(--space-24);
}

.directions-grid {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.direction-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-8) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-decoration: none;
  color: var(--color-text);
  position: relative;
  overflow: hidden;
  transition: transform 400ms var(--ease-out),
              box-shadow 400ms var(--ease-out),
              border-color 400ms var(--ease-out);
}

.direction-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  opacity: 0;
  transition: opacity 400ms var(--ease-out);
  pointer-events: none;
}

.direction-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
}

.direction-card:hover::before {
  opacity: 1;
}

.direction-card:active {
  transform: translateY(-1px);
}

/* Card accent themes */
.direction-card--syndicate::before {
  background: radial-gradient(ellipse at 50% 0%, var(--color-syndicate-glow), transparent 70%);
}
.direction-card--syndicate:hover {
  border-color: rgba(201, 164, 76, 0.25);
}
.direction-card--syndicate .card-icon,
.direction-card--syndicate .card-label {
  color: var(--color-syndicate);
}

.direction-card--aiguy::before {
  background: radial-gradient(ellipse at 50% 0%, var(--color-aiguy-glow), transparent 70%);
}
.direction-card--aiguy:hover {
  border-color: rgba(79, 163, 209, 0.25);
}
.direction-card--aiguy .card-icon,
.direction-card--aiguy .card-label {
  color: var(--color-aiguy);
}

.direction-card--charity::before {
  background: radial-gradient(ellipse at 50% 0%, var(--color-charity-glow), transparent 70%);
}
.direction-card--charity:hover {
  border-color: rgba(42, 157, 143, 0.25);
}
.direction-card--charity .card-icon,
.direction-card--charity .card-label {
  color: var(--color-charity);
}

/* Card internals */
.card-icon {
  margin-bottom: var(--space-6);
  width: 48px;
  height: 48px;
}

.card-icon svg {
  display: block;
}

.card-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.card-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: var(--space-4);
  color: #fff;
}

.card-description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-6);
  flex: 1;
}

.card-details {
  display: flex;
  gap: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.card-stat {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums lining-nums;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
}

.card-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), gap var(--transition-interactive);
}

.card-cta svg {
  display: inline-block;
  transition: transform 300ms var(--ease-out);
}

.direction-card:hover .card-cta {
  color: #fff;
}

.direction-card:hover .card-cta svg {
  transform: translateX(4px);
}

/* ================================================
   BOTTOM CTA
   ================================================ */

.bottom-cta {
  text-align: center;
  padding: var(--space-16) var(--space-6) var(--space-24);
}

.bottom-tagline {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              transform var(--transition-interactive),
              box-shadow var(--transition-interactive),
              border-color var(--transition-interactive);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: #fff;
  color: var(--color-bg);
}

.btn--primary:hover {
  background: #e4e3e0;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn--outline:hover {
  border-color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-1px);
}

/* ================================================
   FOOTER
   ================================================ */

.site-footer {
  padding: var(--space-8) var(--space-6);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

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

.footer-links a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
}

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

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

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

.footer-attribution {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  opacity: 0.6;
}

.footer-attribution:hover {
  opacity: 1;
  color: var(--color-text-muted);
}

/* ================================================
   SCROLL ANIMATIONS
   ================================================ */

.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 100%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

/* ================================================
   RESPONSIVE
   ================================================ */

@media (max-width: 900px) {
  .directions-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
  }

  .hero-title {
    font-size: var(--text-3xl);
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: var(--space-3) var(--space-4);
  }

  .header-nav {
    gap: var(--space-3);
  }

  .nav-link:not(.nav-link--cta) {
    display: none;
  }

  .hero {
    padding: var(--space-24) var(--space-4) var(--space-12);
    min-height: 85dvh;
  }

  .hero-eyebrow {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
  }

  .hero-title {
    font-size: var(--text-2xl);
  }

  .hero-subtitle {
    font-size: var(--text-base);
  }

  .directions {
    padding: var(--space-4) var(--space-4) var(--space-16);
  }

  .direction-card {
    padding: var(--space-6) var(--space-5);
  }

  .bottom-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
}

/* ================================================
   HERO ENTRANCE ANIMATION
   ================================================ */

@keyframes hero-enter {
  from {
    opacity: 0;
    filter: blur(4px);
  }
  to {
    opacity: 1;
    filter: blur(0);
  }
}

.hero-eyebrow {
  animation: hero-enter 800ms var(--ease-out) 200ms both;
}

.hero-title {
  animation: hero-enter 800ms var(--ease-out) 400ms both;
}

.hero-subtitle {
  animation: hero-enter 800ms var(--ease-out) 600ms both;
}