@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── Tokens ─────────────────────────────────────────────────── */
:root {
  --bg:        #060b17;
  --surface:   #0d1526;
  --surface2:  #111d35;
  --border:    rgba(79,142,247,0.15);
  --blue:      #4f8ef7;
  --purple:    #a855f7;
  --green:     #22c55e;
  --red:       #ef4444;
  --text:      #e2e8f0;
  --muted:     #64748b;
  --radius:    14px;
}

/* ── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0 }
html { scroll-behavior: smooth }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Hero ──────────────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 64px 24px 56px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero-glow {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% -20%, rgba(79,142,247,0.18) 0%, transparent 70%);
  pointer-events: none;
}
.hero-badge {
  display: inline-block;
  font-size: 11px; font-weight: 600; letter-spacing: .1em;
  text-transform: uppercase; color: var(--blue);
  border: 1px solid rgba(79,142,247,0.35);
  background: rgba(79,142,247,0.08);
  padding: 4px 14px; border-radius: 99px; margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 800; line-height: 1.15;
  color: #fff; margin-bottom: 16px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 14px; color: var(--muted); letter-spacing: .04em;
}

/* ── Main layout ───────────────────────────────────────────────── */
.main {
  max-width: 1100px; margin: 0 auto;
  padding: 40px 24px 80px;
  display: flex; flex-direction: column; gap: 28px;
}

/* ── Card ──────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .2s;
}
.card:hover { border-color: rgba(79,142,247,0.3) }

.card-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 20px;
}
.card-header h2 { font-size: 18px; font-weight: 700; color: #fff }
.card-desc { font-size: 13px; color: var(--muted); margin-bottom: 20px; line-height: 1.6 }

.badge {
  font-size: 11px; font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase;
  background: rgba(79,142,247,0.12); color: var(--blue);
  border: 1px solid rgba(79,142,247,0.25);
  padding: 3px 10px; border-radius: 99px; white-space: nowrap;
}

/* ── Upload Zone ───────────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed rgba(79,142,247,0.35);
  border-radius: 12px;
  background: rgba(79,142,247,0.04);
  padding: 48px 24px;
  text-align: center; cursor: pointer;
  transition: all .25s ease;
}
.upload-zone:hover, .upload-zone.dragging {
  border-color: var(--blue);
  background: rgba(79,142,247,0.09);
  transform: scale(1.005);
}
.upload-zone.has-preview { padding: 16px }
.upload-icon { font-size: 48px; margin-bottom: 12px }
.upload-title { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 6px }
.upload-sub { font-size: 13px; color: var(--muted) }

.preview-wrap { position: relative; display: inline-block }
.preview-img { max-height: 220px; border-radius: 8px; display: block; margin: 0 auto }
.preview-change {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: rgba(0,0,0,0.55); color: #fff;
  font-size: 12px; padding: 6px; border-radius: 0 0 8px 8px;
  opacity: 0; transition: opacity .2s;
}
.preview-wrap:hover .preview-change { opacity: 1 }

/* ── Image Grid ────────────────────────────────────────────────── */
.img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}
.img-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden;
  transition: transform .2s, border-color .2s;
}
.img-card:hover { transform: translateY(-3px); border-color: rgba(79,142,247,0.4) }
.img-card img { width: 100%; aspect-ratio: 1; object-fit: cover; display: block }
.img-label {
  display: block; font-size: 11px; font-weight: 500;
  color: var(--muted); text-align: center; padding: 6px 4px;
}

/* ── All-model generative grid ─────────────────────────────────── */
.gen-all-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}
.model-col {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.model-col:hover { transform: translateY(-2px) }
.model-col-header {
  padding: 12px 14px;
  border-left: 3px solid;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}
.model-name {
  display: block; font-size: 13px; font-weight: 700;
  letter-spacing: .05em; text-transform: uppercase; margin-bottom: 3px;
}
.model-desc {
  display: block; font-size: 10px; color: var(--muted); line-height: 1.4;
}
.model-img-stack {
  padding: 10px;
  display: flex; flex-direction: column; gap: 8px;
}
.img-placeholder {
  width: 100%; aspect-ratio: 1;
  background: rgba(255,255,255,0.04);
  border-radius: 8px;
  border: 1px dashed rgba(255,255,255,0.08);
}
.gen-badge { background: rgba(16,185,129,0.12) !important; color: #10b981 !important; border-color: rgba(16,185,129,0.3) !important }
.spinner-label { font-size: 12px; color: var(--muted); margin-top: 10px; text-align: center }
@media (max-width: 900px) { .gen-all-grid { grid-template-columns: repeat(2, 1fr) } }
@media (max-width: 580px) { .gen-all-grid { grid-template-columns: 1fr } }

/* ── Buttons ───────────────────────────────────────────────────── */
.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--purple));
  color: #fff; border: none; border-radius: 10px;
  padding: 11px 24px; font-size: 14px; font-weight: 600;
  cursor: pointer; transition: opacity .2s, transform .15s;
  font-family: inherit;
}
.btn-primary:hover:not(:disabled) { opacity: .88; transform: translateY(-1px) }
.btn-primary:disabled { opacity: .45; cursor: not-allowed }

/* ── Classify controls ─────────────────────────────────────────── */
.clf-controls { display: flex; gap: 12px; align-items: center; flex-wrap: wrap }
.select-wrap select {
  background: var(--surface2); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 16px; font-size: 14px; font-family: inherit;
  cursor: pointer; outline: none; transition: border-color .2s;
  min-width: 150px;
}
.select-wrap select:focus { border-color: var(--blue) }

/* ── Result box ────────────────────────────────────────────────── */
.result-box {
  margin-top: 20px; border-radius: 12px; padding: 20px;
  border: 1px solid;
}
.result-box.normal   { border-color: rgba(34,197,94,.35);  background: rgba(34,197,94,.06) }
.result-box.pneumonia{ border-color: rgba(239,68,68,.35);  background: rgba(239,68,68,.06) }

.result-header { display: flex; align-items: center; gap: 14px; margin-bottom: 16px }
.result-icon   { font-size: 28px }
.result-label  { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em }
.result-pred   { font-size: 22px; font-weight: 800; color: #fff }
.result-model-badge {
  margin-left: auto; font-size: 11px; font-weight: 600;
  background: rgba(79,142,247,0.12); color: var(--blue);
  border: 1px solid rgba(79,142,247,0.25);
  padding: 4px 12px; border-radius: 99px;
}

/* ── Confidence bars ───────────────────────────────────────────── */
.conf-bars { display: flex; flex-direction: column; gap: 10px }
.conf-row  { display: flex; align-items: center; gap: 10px }
.conf-label{ font-size: 13px; font-weight: 500; width: 80px; color: var(--muted) }
.conf-track{ flex: 1; height: 8px; background: rgba(255,255,255,0.08); border-radius: 99px; overflow: hidden }
.conf-fill { height: 100%; border-radius: 99px; transition: width .6s cubic-bezier(.4,0,.2,1) }
.conf-pct  { font-size: 13px; font-weight: 600; width: 48px; text-align: right; color: var(--text) }

/* ── Table ─────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto }
.results-table {
  width: 100%; border-collapse: collapse; font-size: 13px;
}
.results-table th {
  padding: 10px 14px; text-align: left;
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .07em; color: var(--muted);
  border-bottom: 1px solid var(--border);
}
.results-table td { padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,0.04) }
.results-table tr:last-child td { border-bottom: none }
.results-table tr:hover td { background: rgba(79,142,247,0.05) }
.row-best td { background: rgba(79,142,247,0.07) }
.row-best td:first-child { border-left: 3px solid var(--blue) }
.cell-best   { color: #22d3a5; font-weight: 700 }
.cell-fp-low { color: #22d3a5; font-weight: 700 }
.cell-worst  { color: #f87171; font-weight: 600 }
.table-model-name { display: flex; align-items: center; gap: 8px }
.table-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0 }
.trophy {
  font-size: 11px; font-weight: 700;
  background: linear-gradient(135deg, rgba(79,142,247,0.2), rgba(168,85,247,0.2));
  border: 1px solid rgba(79,142,247,0.4);
  color: var(--blue); padding: 2px 8px; border-radius: 99px; margin-left: 4px;
}

/* ── Spinner ───────────────────────────────────────────────────── */
.spinner-wrap { display: flex; justify-content: center; padding: 32px }
.spinner {
  width: 36px; height: 36px; border-radius: 50%;
  border: 3px solid rgba(79,142,247,0.2);
  border-top-color: var(--blue);
  animation: spin .75s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg) } }

.empty { font-size: 13px; color: var(--muted); text-align: center; padding: 32px 0 }

/* ── Footer ────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border); text-align: center;
  padding: 20px; font-size: 12px; color: var(--muted);
}

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .gen-grid { grid-template-columns: 1fr; }
  .gen-divider { display: none }
  .clf-controls { flex-direction: column; align-items: stretch }
}