/* InsureAI — Main Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Syne:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #1a0a10;
  --bg2: #1f0d15;
  --bg3: #2d1020;
  --border: #5c1a35;
  --text: #f1f5f9;
  --text2: #94a3b8;
  --text3: #64748b;
  --accent: #f472b6;
  --accent2: #db2777;
  --purple: #fb7185;
  --green: #f9a8d4;
  --amber: #fda4af;
  --red: #ff6b9d;
  --radius: 12px;
  --font-display: 'Syne', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Navbar ─────────────────────────────────────────────── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 64px;
  background: rgba(26,10,16,0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--accent);
}
.brand-icon { font-size: 1.5rem; }

.nav-links {
  display: flex;
  gap: 0.5rem;
}
.nav-link {
  color: var(--text2);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s;
}
.nav-link:hover, .nav-link.active {
  color: var(--text);
  background: var(--bg3);
}
.nav-link.active { color: var(--accent); }

.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.4rem; cursor: pointer; }

/* ── Layout ─────────────────────────────────────────────── */
.page-content { flex: 1; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* ── Hero ───────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 6rem 2rem;
}
.hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 60% 40%, rgba(244,114,182,0.07) 0%, transparent 70%),
              radial-gradient(ellipse 60% 40% at 80% 70%, rgba(251,113,133,0.05) 0%, transparent 60%);
}
.grid-overlay {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(244,114,182,0.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(244,114,182,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero-content { position: relative; z-index: 2; max-width: 620px; }
.hero-badge {
  display: inline-block;
  background: rgba(244,114,182,0.12);
  border: 1px solid rgba(244,114,182,0.3);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}
.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}
.gradient-text {
  background: linear-gradient(135deg, #f472b6, #fb7185);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  color: var(--text2);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-visual {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.stat-card {
  background: rgba(15,23,42,0.9);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  min-width: 160px;
  backdrop-filter: blur(10px);
  animation: float 3s ease-in-out infinite;
  animation-delay: var(--delay);
}
.stat-label { font-size: 0.75rem; color: var(--text3); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.stat-value { font-size: 1.5rem; font-weight: 800; color: var(--accent); }
.stat-sub { font-size: 0.75rem; color: var(--text2); }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: #1a0a10;
}
.btn-primary:hover { background: #7dd3fc; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(244,114,182,0.3); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-full { width: 100%; justify-content: center; margin-top: 1.5rem; }

/* ── Sections ───────────────────────────────────────────── */
.section { padding: 5rem 2rem; }
.section-dark { background: var(--bg2); }
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header h2 { font-size: 2rem; font-weight: 800; margin-bottom: 0.75rem; }
.section-header p { color: var(--text2); font-size: 1rem; }

/* ── Algorithm Grid ─────────────────────────────────────── */
.algo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}
.algo-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.algo-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--c, #f472b6);
}
.algo-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.algo-num { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text3); margin-bottom: 0.5rem; }
.algo-icon { font-size: 1.75rem; margin-bottom: 0.75rem; }
.algo-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; }
.algo-card p { font-size: 0.85rem; color: var(--text2); line-height: 1.6; margin-bottom: 1rem; }
.algo-metrics { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.metric-pill {
  background: rgba(244,114,182,0.1);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

/* ── Dataset Stats ──────────────────────────────────────── */
.dataset-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
.dataset-stat {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}
.ds-num { font-size: 2.25rem; font-weight: 800; color: var(--accent); font-family: var(--font-mono); }
.ds-label { font-size: 0.85rem; color: var(--text2); margin-top: 4px; }

/* ── Feature Table ──────────────────────────────────────── */
.feature-table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
.feature-table { width: 100%; border-collapse: collapse; }
.feature-table th {
  background: var(--bg3);
  padding: 12px 16px;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.feature-table td {
  padding: 12px 16px;
  font-size: 0.9rem;
  font-family: var(--font-mono);
  border-top: 1px solid var(--border);
  color: var(--text2);
}
.feature-table tr:hover td { background: var(--bg3); }

.type-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-display);
}
.type-badge.num { background: rgba(244,114,182,0.15); color: #f472b6; }
.type-badge.cat { background: rgba(251,113,133,0.15); color: #fb7185; }
.type-badge.target { background: rgba(249,168,212,0.15); color: #f9a8d4; }

/* ── EDA Image ──────────────────────────────────────────── */
.eda-img-wrap { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.eda-img { width: 100%; display: block; }

/* ── Page Hero (inner pages) ────────────────────────────── */
.page-hero {
  padding: 3.5rem 2rem 2.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}
.page-hero h1 { font-size: 2.25rem; font-weight: 800; margin-bottom: 0.5rem; }
.page-hero p { color: var(--text2); font-size: 1rem; }

/* ── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}
.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text);
}
.mb-6 { margin-bottom: 1.5rem; }
.mt-6 { margin-top: 1.5rem; }

/* ── Predict Layout ─────────────────────────────────────── */
.predict-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 1.5rem;
  padding: 2rem 0;
  align-items: start;
}
.form-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  position: sticky;
  top: 80px;
}
.form-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 1.5rem; }
.form-grid { display: flex; flex-direction: column; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--text2); }
.label-hint { font-weight: 400; color: var(--text3); }

.input-wrap { display: flex; align-items: center; gap: 8px; }
.form-input {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 14px;
  font-size: 1rem;
  font-family: var(--font-mono);
  font-weight: 700;
  width: 100%;
}
.form-input:focus { outline: none; border-color: var(--accent); }
.input-unit { color: var(--text3); font-size: 0.85rem; white-space: nowrap; }

.slider {
  width: 100%;
  accent-color: var(--accent);
  height: 4px;
  cursor: pointer;
}

.toggle-group { display: flex; gap: 6px; }
.toggle-btn {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text2);
  padding: 9px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-display);
  cursor: pointer;
  transition: all 0.2s;
}
.toggle-btn.active {
  background: rgba(244,114,182,0.15);
  border-color: var(--accent);
  color: var(--accent);
}

.region-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.region-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text2);
  padding: 8px 10px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-display);
  cursor: pointer;
  transition: all 0.2s;
}
.region-btn.active {
  background: rgba(244,114,182,0.15);
  border-color: var(--accent);
  color: var(--accent);
}

.counter-wrap { display: flex; align-items: center; gap: 12px; }
.counter-btn {
  width: 36px; height: 36px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-mono);
}
.counter-btn:hover { border-color: var(--accent); color: var(--accent); }
.counter-val { font-size: 1.5rem; font-weight: 800; font-family: var(--font-mono); min-width: 30px; text-align: center; }

.bmi-indicator {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  display: inline-block;
  margin-top: 4px;
}

/* Results */
.results-panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.results-placeholder { text-align: center; color: var(--text3); }
.placeholder-icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.4; }
.results-content { padding: 1.75rem; width: 100%; }
.results-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 1.25rem; }

.ensemble-card {
  background: linear-gradient(135deg, rgba(244,114,182,0.15), rgba(251,113,133,0.1));
  border: 1px solid rgba(244,114,182,0.3);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  margin-bottom: 1.25rem;
}
.ensemble-label { font-size: 0.8rem; font-weight: 700; color: var(--text2); text-transform: uppercase; letter-spacing: 0.05em; }
.ensemble-value { font-size: 2.5rem; font-weight: 800; color: var(--accent); font-family: var(--font-mono); }
.ensemble-sub { font-size: 0.8rem; color: var(--text3); margin-top: 4px; }

.model-results { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 1.25rem; }
.model-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
}
.mr-name { font-size: 0.85rem; font-weight: 600; color: var(--text2); }
.mr-val { font-size: 1rem; font-weight: 800; font-family: var(--font-mono); color: var(--text); }
.mr-badge {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 100px;
  font-weight: 700;
}

.cluster-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}
.cluster-card h3 { font-size: 0.85rem; font-weight: 700; color: var(--text2); margin-bottom: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
.cluster-body { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.75rem; }
.cb-stat { text-align: center; }
.cb-val { font-size: 1rem; font-weight: 800; font-family: var(--font-mono); color: var(--accent); }
.cb-key { font-size: 0.7rem; color: var(--text3); }

.chart-wrap { border-radius: 8px; overflow: hidden; }

.loader {
  width: 18px; height: 18px;
  border: 2px solid rgba(0,0,0,0.3);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Comparison Page ────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: 8px; border: 1px solid var(--border); }
.metrics-table { width: 100%; border-collapse: collapse; }
.metrics-table th {
  background: var(--bg3);
  padding: 12px 16px;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text2);
  text-transform: uppercase;
}
.metrics-table td {
  padding: 12px 16px;
  font-size: 0.9rem;
  font-family: var(--font-mono);
  border-top: 1px solid var(--border);
  color: var(--text);
}
.metrics-table tr:hover td { background: var(--bg3); }
.best-row td { background: rgba(249,168,212,0.05) !important; }
.best-badge {
  display: inline-block;
  margin-left: 6px;
  background: rgba(249,168,212,0.15);
  color: #f9a8d4;
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-display);
}
.model-name-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-display);
}
.r2-bar-wrap { display: flex; align-items: center; gap: 10px; }
.r2-bar {
  height: 6px;
  background: linear-gradient(90deg, #f9a8d4, #f472b6);
  border-radius: 3px;
  min-width: 4px;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.tab-nav { display: flex; gap: 6px; margin-bottom: 1.25rem; }
.tab-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text2);
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-display);
  cursor: pointer;
  transition: all 0.2s;
}
.tab-btn.active { background: rgba(244,114,182,0.15); border-color: var(--accent); color: var(--accent); }

.analysis-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.analysis-item {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
}
.analysis-icon { font-size: 1.5rem; margin-bottom: 0.5rem; }
.analysis-item h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.4rem; }
.analysis-item p { font-size: 0.85rem; color: var(--text2); line-height: 1.6; }

/* ── Clustering Page ────────────────────────────────────── */
.cluster-overview {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 1.5rem;
  padding: 2rem 0 0;
}
.cluster-cards { display: flex; flex-direction: column; gap: 0.75rem; }
.cluster-profile {
  background: var(--bg3);
  border: 1px solid;
  border-radius: 10px;
  padding: 1rem 1.25rem;
}
.cp-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.cp-count { font-size: 0.75rem; color: var(--text3); font-weight: 400; }
.cp-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem; margin-bottom: 0.75rem; }
.cp-stat { text-align: center; }
.cp-val { display: block; font-size: 1rem; font-weight: 800; font-family: var(--font-mono); color: var(--text); }
.cp-key { font-size: 0.7rem; color: var(--text3); }
.risk-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
}
.risk-badge.high { background: rgba(255,107,157,0.15); color: #ff6b9d; }
.risk-badge.medium { background: rgba(253,164,175,0.15); color: #fda4af; }
.risk-badge.low { background: rgba(249,168,212,0.15); color: #f9a8d4; }

/* ── About Page ─────────────────────────────────────────── */
.about-grid { display: flex; flex-direction: column; gap: 1.5rem; padding: 2rem 0; }
.info-list { display: flex; flex-direction: column; gap: 0; }
.info-row {
  display: flex;
  gap: 1rem;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.info-key { font-size: 0.85rem; font-weight: 600; color: var(--text3); min-width: 160px; }
.info-val { font-size: 0.9rem; color: var(--text); }

.stack-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; }
.stack-item {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
}
.stack-icon { font-size: 1.25rem; }

.flow-steps { display: flex; flex-direction: column; gap: 0; }
.flow-step {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.step-num {
  width: 32px; height: 32px;
  background: rgba(244,114,182,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--accent);
  font-family: var(--font-mono);
  flex-shrink: 0;
}
.step-text strong { display: block; font-size: 0.9rem; margin-bottom: 4px; }
.step-text p { font-size: 0.85rem; color: var(--text2); }

.ref-list { padding-left: 1.25rem; display: flex; flex-direction: column; gap: 0.5rem; }
.ref-list li { font-size: 0.85rem; color: var(--text2); line-height: 1.6; }

/* ── Footer ─────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 2rem;
  background: var(--bg2);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  font-size: 0.8rem;
  color: var(--text3);
}
.footer-tag {
  background: var(--bg3);
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid var(--border);
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1100px) {
  .predict-layout { grid-template-columns: 1fr; }
  .form-card { position: static; }
  .cluster-overview { grid-template-columns: 1fr; }
  .charts-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .hero { flex-direction: column; padding: 4rem 1.5rem 3rem; min-height: auto; }
  .hero-visual { display: none; }
  .dataset-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg2); border-bottom: 1px solid var(--border); padding: 1rem; z-index: 99; }
  .analysis-grid { grid-template-columns: 1fr; }
  .cluster-body { grid-template-columns: repeat(2, 1fr); }
  .algo-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; gap: 0.5rem; text-align: center; }
}
@media (max-width: 480px) {
  .algo-grid { grid-template-columns: 1fr; }
  .dataset-grid { grid-template-columns: 1fr 1fr; }
}