/* ==========================================================================
   LINKTREE PREMIUM V2 - REFINED DESIGN SYSTEM
   Professional implementation in Vanilla CSS + OKLCH
   ========================================================================== */

/* 1. TYPOGRAPHY & ASSETS */
@font-face {
  font-family: 'Inter';
  src: url('/assets/inter-BT1H-PT_.woff2') format('woff2');
  font-weight: 400 800;
  font-display: swap;
}

:root {
  /* Layout */
  --lt-max-width: 640px;
  --lt-card-radius: 24px;
  --lt-inner-radius: 12px;

  /* Colors - Light Mode (Default) */
  --lt-bg: oklch(98.5% 0.005 235deg);
  --lt-card-bg: oklch(100% 0 0deg);
  --lt-card-border: oklch(92% 0.01 235deg);
  --lt-text-main: oklch(20% 0.02 235deg);
  --lt-text-sub: oklch(55% 0.015 235deg);
  --lt-accent: var(--brand-primary-blue);
  --lt-glow: oklch(65% 0.25 235deg / 0.1);
  --lt-icon-bg-opacity: 0.1;
}

/* Dark Mode Overrides */
:root.dark-theme,
html.dark-theme {
  --lt-bg: var(--brand-neutral-black);
  --lt-card-bg: oklch(22% 0.01 235deg / 0.85);
  /* Deep Zinc */
  --lt-card-border: oklch(35% 0.01 235deg / 0.5);
  --lt-text-main: oklch(98% 0 0deg);
  --lt-text-sub: oklch(75% 0.01 235deg);
  --lt-accent: oklch(65% 0.16 235deg);
  /* Vibrant Link Blue */
  --lt-glow: oklch(65% 0.3 235deg / 0.35);
  --lt-icon-bg-opacity: 0.2;
}

/* 2. CORE LAYOUT */
.linktree-body {
  margin: 0;
  padding: 0;
  min-height: 100dvh;
  background-color: var(--lt-bg) !important;
  color: var(--lt-text-main);
  font-family: 'Inter', system-ui, -apple-system, sans-serif !important;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.bg-mesh-gradient {
  position: fixed;
  inset: 0;
  z-index: var(--z-negative);
  background-color: var(--lt-bg);
  overflow: hidden;
}

.bg-mesh-gradient::after {
  content: '';
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(100vw, 800px);
  height: min(100vw, 800px);
  background: radial-gradient(circle, var(--lt-glow) 0%, transparent 70%);
  pointer-events: none;
}

.bg-noise {
  position: fixed;
  inset: 0;
  z-index: var(--z-negative);
  opacity: 0.03;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.7'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.lt-container {
  max-width: var(--lt-max-width);
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

/* 3. HEADER SYSTEM */
.lt-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lt-avatar-v2 {
  position: relative;
  width: 112px;
  height: 112px;
  margin-bottom: 1.5rem;
  z-index: var(--z-content);
}

.lt-avatar__img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--lt-accent);
  background: var(--brand-neutral-white);
  box-shadow: 0 8px 32px var(--lt-glow);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.lt-avatar-v2::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--lt-accent) 0%, transparent 70%);
  opacity: 0.2;
  z-index: var(--z-negative);
  animation: pulse-avatar 3s infinite ease-in-out;
}

@keyframes pulse-avatar {

  0%,
  100% {
    transform: scale(1);
    opacity: 0.2;
  }

  50% {
    transform: scale(1.15);
    opacity: 0.4;
  }
}

.lt-name {
  font-size: 1.85rem;
  font-weight: 800;
  margin: 0 0 0.25rem 0;
  letter-spacing: -0.04em;
  color: var(--lt-text-main);
}

.lt-role {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--lt-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
}

.lt-bio-box {
  background: var(--lt-card-bg);
  backdrop-filter: blur(12px);
  padding: 1rem 1.75rem;
  border-radius: 20px;
  border: 1px solid var(--lt-card-border);
  max-width: 480px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.lt-bio-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 0.25rem;
  display: block;
}

.lt-bio-sub {
  font-size: 0.9rem;
  color: var(--lt-text-sub);
  font-weight: 500;
}

/* 4. CARDS ARCHITECTURE */
.lt-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.lt-card {
  background: var(--lt-card-bg);
  border: 1px solid var(--lt-card-border);
  border-radius: var(--lt-card-radius);
  text-decoration: none;
  color: inherit;
  display: flex;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  position: relative;
}

.lt-card:hover {
  transform: translateY(-5px);
  border-color: var(--lt-accent);
  box-shadow: 0 10px 40px oklch(0% 0 0 / 0.1);
}

/* Hero / Highlight Card */
.lt-card--hero {
  border: 2px solid var(--lt-accent);
  flex-direction: row;
  min-height: 170px;
}

.lt-card__visual {
  flex: 0 0 130px;
  background: var(--lt-accent);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
}

.lt-card__hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.lt-card--hero:hover .lt-card__hero-img {
  transform: scale(1.1) rotate(-1deg);
}

.lt-card__main {
  flex: 1 1;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.5rem;
}

.lt-card__tag {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--lt-accent);
  letter-spacing: 0.1em;
}

.lt-card__title {
  font-size: 1.2rem;
  font-weight: 800;
  margin: 0;
  line-height: 1.2;
}

.lt-card__desc {
  font-size: 0.85rem;
  color: var(--lt-text-sub);
  margin-bottom: 0.75rem;
}

/* Action Card (Horizontal 3-column) */
.lt-card--action {
  padding: 1rem;
  align-items: center;
  gap: 1.25rem;
}

.lt-icon-wrapper {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.lt-card--action:hover .lt-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
}

/* Reference Palette Icons */
.icon-green {
  background: oklch(75% 0.15 150deg / var(--lt-icon-bg-opacity));
  color: oklch(60% 0.2 150deg);
}

.icon-blue {
  background: oklch(75% 0.15 250deg / var(--lt-icon-bg-opacity));
  color: oklch(60% 0.2 250deg);
}

.icon-gold {
  background: oklch(85% 0.15 85deg / var(--lt-icon-bg-opacity));
  color: oklch(70% 0.2 85deg);
}

.lt-content {
  flex: 1 1;
}

.lt-content__title {
  font-size: 1.05rem;
  font-weight: 750;
  margin-bottom: 0.1rem;
  display: block;
}

.lt-content__sub {
  font-size: 0.8rem;
  color: var(--lt-text-sub);
}

/* Premium Pill Button */
.lt-pill {
  height: 38px;
  padding: 0 1.25rem;
  border-radius: 100px;
  background: var(--lt-accent);
  color: var(--brand-neutral-white) !important;
  font-size: 0.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  transition: filter var(--duration-fast) var(--ease-snappy), box-shadow var(--duration-fast) var(--ease-snappy);
}

.lt-pill:hover {
  filter: brightness(1.15);
  box-shadow: 0 4px 12px var(--lt-glow);
}

/* 5. QUICK CONTACT section */
.lt-quick-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.lt-action-pill {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.15rem;
  background: var(--lt-card-bg);
  border: 1px solid var(--lt-card-border);
  border-radius: 100px;
  text-decoration: none;
  font-weight: 700;
  color: var(--lt-text-main);
  transition: background-color var(--duration-smooth) var(--ease-fluid), color var(--duration-smooth) var(--ease-fluid), border-color var(--duration-smooth) var(--ease-fluid), transform var(--duration-smooth) var(--ease-fluid);
}

.lt-action-pill:hover {
  background: var(--lt-accent);
  color: var(--brand-neutral-white);
  border-color: var(--lt-accent);
  transform: translateY(-3px);
}

/* 6. FOOTER & SOCIALS */
.lt-footer {
  text-align: center;
  padding-top: 2rem;
}

.lt-socials {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.lt-social-item {
  font-size: 1.6rem;
  color: var(--lt-text-sub);
  transition: color 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.lt-social-item:hover {
  color: var(--lt-accent);
  transform: translateY(-5px) scale(1.2);
}

.lt-copyright {
  font-size: 0.8125rem;
  color: var(--lt-text-sub);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  opacity: 0.6;
}

/* 7. RESPONSIVENESS */

/* Image helpers */
.img-light {
  display: block;
}

.img-dark {
  display: none;
}

html.dark-theme .img-light {
  display: none;
}

html.dark-theme .img-dark {
  display: block;
}

@media (width <= 520px) {
  .lt-container {
    padding: 3rem 1.25rem;
    gap: 2.5rem;
  }

  .lt-name {
    font-size: 1.6rem;
  }

  .lt-card--hero {
    flex-direction: column;
    min-height: auto;
  }

  .lt-card__visual {
    flex: 0 0 140px;
  }

  .lt-card--action {
    gap: 0.75rem;
    padding: 0.85rem;
  }

  .lt-icon-wrapper {
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
  }

  .lt-content__title {
    font-size: 0.95rem;
  }

  .lt-pill {
    padding: 0 0.85rem;
    font-size: 0.7rem;
  }
}