/* ============================================================
   MediAI — Styles
   Dark · Gradient · Glassmorphism · Animated
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --bg:          #080B12;
  --bg-2:        #0D1120;
  --bg-3:        #111827;
  --surface:     rgba(255,255,255,0.04);
  --surface-2:   rgba(255,255,255,0.07);
  --border:      rgba(255,255,255,0.08);
  --border-2:    rgba(255,255,255,0.13);

  --cyan:        #6EE7F7;
  --cyan-dim:    rgba(110,231,247,0.15);
  --purple:      #A78BFA;
  --purple-dim:  rgba(167,139,250,0.15);
  --pink:        #F472B6;
  --pink-dim:    rgba(244,114,182,0.15);
  --amber:       #F59E0B;

  --text-1:      #F0F4FF;
  --text-2:      #9BA8C0;
  --text-3:      #5A6480;

  --font-display: 'Syne', sans-serif;
  --font-body:    'Bricolage Grotesque', sans-serif;

  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   20px;
  --radius-xl:   28px;

  --shadow-glow-cyan:   0 0 40px rgba(110,231,247,0.18);
  --shadow-glow-purple: 0 0 40px rgba(167,139,250,0.18);
  --shadow-glow-pink:   0 0 40px rgba(244,114,182,0.18);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: var(--font-body); border: none; background: none; }
input { font-family: var(--font-body); }
img { display: block; max-width: 100%; }

/* ---------- Ambient Background Blobs ---------- */
.bg-blobs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.35;
  animation: blobFloat 12s ease-in-out infinite alternate;
}
.blob-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #6EE7F7 0%, transparent 70%);
  top: -200px; left: -150px;
  animation-delay: 0s;
}
.blob-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #A78BFA 0%, transparent 70%);
  top: 30%; right: -100px;
  animation-delay: -4s;
}
.blob-3 {
  width: 450px; height: 450px;
  background: radial-gradient(circle, #F472B6 0%, transparent 70%);
  bottom: 10%; left: 20%;
  animation-delay: -8s;
}
@keyframes blobFloat {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 40px) scale(1.08); }
}

/* ---------- Utility ---------- */
.gradient-text {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--purple) 50%, var(--pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  background: var(--cyan-dim);
  border: 1px solid rgba(110,231,247,0.2);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.section-sub {
  color: var(--text-2);
  font-size: 1.05rem;
  max-width: 560px;
  margin-bottom: 56px;
}

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  transition: background 0.3s, backdrop-filter 0.3s, border-color 0.3s;
}
.nav.scrolled {
  background: rgba(8,11,18,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 68px;
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-1);
  flex-shrink: 0;
}
.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: 9px;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
  margin-left: auto;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text-1); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #080B12;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 100px;
  transition: opacity 0.2s, transform 0.2s;
  flex-shrink: 0;
}
.nav-cta:hover { opacity: 0.88; transform: translateY(-1px); }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border-2);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
  animation: fadeUp 0.6s ease both;
}
.badge-dot {
  width: 7px; height: 7px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--cyan);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  animation: fadeUp 0.6s 0.1s ease both;
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-2);
  max-width: 580px;
  margin-bottom: 40px;
  animation: fadeUp 0.6s 0.2s ease both;
}
.br-desktop { display: block; }
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 64px;
  animation: fadeUp 0.6s 0.3s ease both;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #080B12;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 100px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(110,231,247,0.3);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  background: var(--surface);
  color: var(--text-1);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 100px;
  border: 1px solid var(--border-2);
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.btn-ghost:hover {
  background: var(--surface-2);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-2px);
}

/* Hero Stats */
.hero-stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeUp 0.6s 0.4s ease both;
}
.stat-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 28px;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  min-width: 140px;
  transition: border-color 0.2s, transform 0.2s;
}
.stat-chip:hover {
  border-color: rgba(110,231,247,0.3);
  transform: translateY(-3px);
}
.stat-chip span:first-child,
.stat-chip > span:nth-child(2) {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.stat-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.stat-chip > span:nth-child(2) {
  font-size: 1.4rem;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-3);
  margin-top: 4px;
  font-weight: 500;
  -webkit-text-fill-color: var(--text-3);
}

/* Hero Visual */
.hero-visual {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: -1;
}
.visual-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation: ringPulse 4s ease-in-out infinite;
}
.ring-1 {
  width: 300px; height: 300px;
  border-color: rgba(110,231,247,0.12);
  animation-delay: 0s;
}
.ring-2 {
  width: 500px; height: 500px;
  border-color: rgba(167,139,250,0.08);
  animation-delay: -1.3s;
}
.ring-3 {
  width: 700px; height: 700px;
  border-color: rgba(244,114,182,0.05);
  animation-delay: -2.6s;
}
.visual-core {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 72px; height: 72px;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(12px);
}
@keyframes ringPulse {
  0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
  50%       { opacity: 1;   transform: translate(-50%, -50%) scale(1.04); }
}

/* ---------- MODELS SECTION ---------- */
.models-section {
  position: relative;
  z-index: 1;
  padding: 100px 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.models-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.model-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  cursor: default;
}
.model-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-2);
}
.model-card--featured {
  background: linear-gradient(160deg, rgba(167,139,250,0.08) 0%, rgba(8,11,18,0.6) 100%);
  border-color: rgba(167,139,250,0.2);
}
.model-card--featured:hover {
  box-shadow: var(--shadow-glow-purple);
  border-color: rgba(167,139,250,0.4);
}
.model-card:not(.model-card--featured):hover {
  box-shadow: var(--shadow-glow-cyan);
}
.card-glow {
  position: absolute;
  top: -60px; right: -60px;
  width: 200px; height: 200px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.25;
  pointer-events: none;
}
.glow-cyan   { background: var(--cyan); }
.glow-purple { background: var(--purple); }
.glow-pink   { background: var(--pink); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.card-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}
.icon-cancer   { background: rgba(110,231,247,0.1); border: 1px solid rgba(110,231,247,0.2); }
.icon-parkinsons { background: rgba(167,139,250,0.1); border: 1px solid rgba(167,139,250,0.2); }
.icon-diabetes { background: rgba(244,114,182,0.1); border: 1px solid rgba(244,114,182,0.2); }

.card-tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
}
.tag-cyan   { color: var(--cyan);   background: var(--cyan-dim);   border: 1px solid rgba(110,231,247,0.2); }
.tag-purple { color: var(--purple); background: var(--purple-dim); border: 1px solid rgba(167,139,250,0.2); }
.tag-pink   { color: var(--pink);   background: var(--pink-dim);   border: 1px solid rgba(244,114,182,0.2); }

.card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.card-desc {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 24px;
}
.card-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}
.meta-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.meta-label {
  font-size: 0.78rem;
  color: var(--text-3);
  font-weight: 500;
}
.meta-val {
  font-size: 0.82rem;
  color: var(--text-2);
  font-weight: 600;
}
.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-1);
  transition: gap 0.2s, color 0.2s;
}
.model-card[data-model="cancer"]    .card-cta:hover { color: var(--cyan); }
.model-card[data-model="parkinsons"] .card-cta:hover { color: var(--purple); }
.model-card[data-model="diabetes"]  .card-cta:hover { color: var(--pink); }
.card-cta:hover { gap: 12px; }

/* ---------- PREDICT SECTION ---------- */
.predict-section {
  position: relative;
  z-index: 1;
  padding: 100px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

/* Tabs */
.model-tabs {
  display: flex;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px;
  width: fit-content;
  margin-bottom: 40px;
}
.tab-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-2);
  transition: background 0.2s, color 0.2s;
}
.tab-btn.active {
  background: var(--surface-2);
  color: var(--text-1);
  border: 1px solid var(--border-2);
}
.tab-btn:hover:not(.active) { color: var(--text-1); }
.tab-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
}
.dot-cyan   { background: var(--cyan);   box-shadow: 0 0 6px var(--cyan); }
.dot-purple { background: var(--purple); box-shadow: 0 0 6px var(--purple); }
.dot-pink   { background: var(--pink);   box-shadow: 0 0 6px var(--pink); }

/* Forms */
.forms-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  backdrop-filter: blur(12px);
}
.predict-form {
  display: none;
  animation: fadeIn 0.3s ease;
}
.predict-form.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.form-grid--small {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.form-group label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: 0.02em;
}
.form-group input {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-1);
  font-size: 0.9rem;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  outline: none;
  width: 100%;
}
.form-group input::placeholder { color: var(--text-3); }
.form-group input:focus {
  border-color: var(--cyan);
  background: rgba(110,231,247,0.04);
  box-shadow: 0 0 0 3px rgba(110,231,247,0.1);
}
#form-parkinsons .form-group input:focus {
  border-color: var(--purple);
  background: rgba(167,139,250,0.04);
  box-shadow: 0 0 0 3px rgba(167,139,250,0.1);
}
#form-diabetes .form-group input:focus {
  border-color: var(--pink);
  background: rgba(244,114,182,0.04);
  box-shadow: 0 0 0 3px rgba(244,114,182,0.1);
}

/* Form Actions */
.form-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-predict {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #080B12;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 100px;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
}
.btn-predict:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(110,231,247,0.3);
}
.btn-predict:active { transform: translateY(0); }
.btn-predict--purple {
  background: linear-gradient(135deg, var(--purple), var(--pink));
}
.btn-predict--purple:hover {
  box-shadow: 0 8px 32px rgba(167,139,250,0.3);
}
.btn-predict--pink {
  background: linear-gradient(135deg, var(--pink), #F97316);
}
.btn-predict--pink:hover {
  box-shadow: 0 8px 32px rgba(244,114,182,0.3);
}
.btn-predict.loading {
  opacity: 0.7;
  pointer-events: none;
}
.btn-loader { display: flex; align-items: center; }
.spin {
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
.btn-clear {
  padding: 13px 24px;
  background: transparent;
  border: 1px solid var(--border-2);
  color: var(--text-2);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 100px;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn-clear:hover {
  background: var(--surface-2);
  color: var(--text-1);
  border-color: rgba(255,255,255,0.2);
}

/* Result Panel */
.result-panel {
  margin-top: 24px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  animation: fadeUp 0.4s ease;
}
.result-panel[hidden] { display: none; }
.result-inner {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 28px 32px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xl);
  position: relative;
}
.result-panel.result-positive .result-inner {
  background: rgba(239,68,68,0.08);
  border-color: rgba(239,68,68,0.3);
}
.result-panel.result-negative .result-inner {
  background: rgba(34,197,94,0.08);
  border-color: rgba(34,197,94,0.3);
}
.result-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.4rem;
}
.result-panel.result-positive .result-icon {
  background: rgba(239,68,68,0.15);
  border: 1px solid rgba(239,68,68,0.3);
}
.result-panel.result-negative .result-icon {
  background: rgba(34,197,94,0.15);
  border: 1px solid rgba(34,197,94,0.3);
}
.result-model-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 4px;
}
.result-verdict {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.result-panel.result-positive .result-verdict { color: #F87171; }
.result-panel.result-negative .result-verdict { color: #4ADE80; }
.result-message {
  font-size: 0.9rem;
  color: var(--text-2);
}
.result-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-2);
  transition: background 0.2s, color 0.2s;
}
.result-close:hover { background: var(--surface); color: var(--text-1); }

/* ---------- ABOUT SECTION ---------- */
.about-section {
  position: relative;
  z-index: 1;
  padding: 100px 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-text p {
  color: var(--text-2);
  margin-bottom: 16px;
  font-size: 0.95rem;
  line-height: 1.75;
}
.disclaimer-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--amber);
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.25);
  padding: 8px 16px;
  border-radius: 100px;
  margin-top: 8px;
}
.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: border-color 0.2s, transform 0.2s;
}
.about-card:hover {
  border-color: var(--border-2);
  transform: translateY(-3px);
}
.about-card-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 6px;
}
.about-card-label {
  font-size: 0.82rem;
  color: var(--text-3);
  font-weight: 500;
}

/* ---------- FOOTER ---------- */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 32px 24px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
}
.footer-copy {
  font-size: 0.82rem;
  color: var(--text-3);
  margin-left: auto;
}
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  font-size: 0.82rem;
  color: var(--text-3);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--text-2); }

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

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .models-grid { grid-template-columns: 1fr 1fr; }
  .about-grid  { grid-template-columns: 1fr; gap: 48px; }
}
@media (max-width: 768px) {
  .models-grid { grid-template-columns: 1fr; }
  .nav-links   { display: none; }
  .hero-title  { font-size: 2.8rem; }
  .br-desktop  { display: none; }
  .forms-container { padding: 24px; }
  .form-grid   { grid-template-columns: 1fr 1fr; }
  .model-tabs  { flex-wrap: wrap; border-radius: var(--radius-lg); }
  .footer-copy { margin-left: 0; }
  .about-cards { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .form-grid   { grid-template-columns: 1fr; }
  .hero-stats  { flex-direction: column; align-items: center; }
  .stat-chip   { width: 100%; max-width: 260px; }
}