*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
:root {
  --bg-primary:#0a0e1a; --bg-card:rgba(17,24,39,0.7);
  --border:rgba(99,102,241,0.15); --border-hover:rgba(99,102,241,0.35);
  --text-primary:#f1f5f9; --text-secondary:#94a3b8; --text-muted:#64748b;
  --accent:#6366f1; --accent-glow:rgba(99,102,241,0.25);
  --cancer-red:#ef4444; --cancer-red-glow:rgba(239,68,68,0.2);
  --normal-green:#22c55e; --normal-green-glow:rgba(34,197,94,0.2);
  --radius:16px; --radius-sm:10px;
  --transition:0.3s cubic-bezier(0.4,0,0.2,1);
}
body {
  font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg-primary); color:var(--text-primary);
  min-height:100vh; overflow-x:hidden;
}
body::before {
  content:''; position:fixed; top:0; left:0; width:100%; height:100%;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%,rgba(99,102,241,0.08) 0%,transparent 50%),
    radial-gradient(ellipse 60% 80% at 80% 90%,rgba(34,197,94,0.05) 0%,transparent 50%);
  pointer-events:none; z-index:0;
}
.app-container { position:relative; z-index:1; max-width:720px; margin:0 auto; padding:40px 20px 60px; }

/* Header */
.header { text-align:center; margin-bottom:48px; }
.header-badge {
  display:inline-flex; align-items:center; gap:8px;
  padding:6px 16px; background:var(--accent-glow); border:1px solid var(--border);
  border-radius:100px; font-size:12px; font-weight:600; color:var(--accent);
  text-transform:uppercase; letter-spacing:1.5px; margin-bottom:20px;
}
.header-badge .pulse {
  width:8px; height:8px; background:var(--accent); border-radius:50%;
  animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(.8)} }
.header h1 {
  font-size:2.5rem; font-weight:800; letter-spacing:-0.03em; line-height:1.1; margin-bottom:12px;
  background:linear-gradient(135deg,var(--text-primary),var(--accent));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.header p { font-size:1rem; color:var(--text-secondary); max-width:480px; margin:0 auto; line-height:1.6; }

/* Model loading overlay */
.model-loading {
  display:flex; position:fixed; top:0; left:0; width:100%; height:100%;
  background:rgba(10,14,26,0.92); z-index:1000;
  align-items:center; justify-content:center; flex-direction:column;
  backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
}
.model-loading.hidden { display:none; }
.model-loading-inner { text-align:center; }
.spinner-large {
  width:48px; height:48px; border:3px solid rgba(99,102,241,0.2);
  border-top-color:var(--accent); border-radius:50%; margin:0 auto 20px;
  animation:spin 0.8s linear infinite;
}
.model-loading-text { font-size:1.2rem; font-weight:600; margin-bottom:6px; }
.model-loading-sub { font-size:0.85rem; color:var(--text-muted); }

/* Card */
.card {
  background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius);
  backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px);
  padding:32px; margin-bottom:24px; transition:var(--transition);
}

/* Upload zone */
.upload-zone {
  position:relative; border:2px dashed var(--border); border-radius:var(--radius-sm);
  padding:48px 24px; text-align:center; cursor:pointer; transition:var(--transition);
}
.upload-zone:hover, .upload-zone.drag-over { border-color:var(--accent); background:var(--accent-glow); }
.upload-zone.drag-over { transform:scale(1.01); }
.upload-zone.has-image { padding:16px; border-style:solid; border-color:var(--border-hover); }
.upload-icon {
  width:56px; height:56px; margin:0 auto 16px; background:var(--accent-glow);
  border-radius:50%; display:flex; align-items:center; justify-content:center; transition:var(--transition);
}
.upload-zone:hover .upload-icon { transform:translateY(-2px); background:rgba(99,102,241,0.3); }
.upload-icon svg { width:24px; height:24px; color:var(--accent); }
.upload-text-main { font-size:1rem; font-weight:600; margin-bottom:6px; }
.upload-text-sub { font-size:0.85rem; color:var(--text-muted); }
.upload-text-sub span { color:var(--accent); font-weight:500; }
#file-input { display:none; }

/* Preview */
.preview-container { display:none; flex-direction:column; align-items:center; gap:16px; }
.preview-container.visible { display:flex; }
.preview-img { max-width:100%; max-height:360px; border-radius:var(--radius-sm); object-fit:contain; box-shadow:0 8px 32px rgba(0,0,0,0.3); }
.preview-info { display:flex; align-items:center; gap:12px; font-size:0.85rem; color:var(--text-secondary); }
.preview-info .filename { font-weight:500; color:var(--text-primary); max-width:200px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.btn-change {
  background:none; border:1px solid var(--border); color:var(--text-secondary);
  padding:4px 12px; border-radius:100px; font-size:0.8rem; cursor:pointer;
  transition:var(--transition); font-family:inherit;
}
.btn-change:hover { border-color:var(--accent); color:var(--accent); }

/* Input mode tabs */
.input-tabs {
  display:flex; gap:4px; margin-bottom:20px;
  background:rgba(255,255,255,0.04); border-radius:var(--radius-sm); padding:4px;
}
.input-tab {
  flex:1; display:flex; align-items:center; justify-content:center; gap:6px;
  padding:10px 16px; border:none; border-radius:8px;
  background:transparent; color:var(--text-muted); font-family:inherit;
  font-size:0.9rem; font-weight:500; cursor:pointer; transition:var(--transition);
}
.input-tab:hover { color:var(--text-secondary); }
.input-tab.active { background:var(--accent-glow); color:var(--accent); }
.input-mode.hidden { display:none; }

/* Camera */
.camera-view {
  position:relative; border-radius:var(--radius-sm); overflow:hidden;
  background:#000; aspect-ratio:4/3;
}
.camera-view video {
  width:100%; height:100%; object-fit:cover; display:block;
}
.camera-controls {
  position:absolute; bottom:16px; left:0; right:0;
  display:flex; align-items:center; justify-content:center; gap:24px;
}
.cam-btn {
  border:none; border-radius:50%; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:var(--transition); font-family:inherit;
}
.cam-btn svg { width:20px; height:20px; }
.cam-btn-switch, .cam-btn-stop {
  width:44px; height:44px;
  background:rgba(0,0,0,0.5); color:white;
  backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,0.15);
}
.cam-btn-switch:hover, .cam-btn-stop:hover { background:rgba(255,255,255,0.2); }
.cam-btn-capture {
  width:64px; height:64px;
  background:white; padding:0;
}
.cam-btn-capture:hover { transform:scale(1.05); }
.cam-btn-capture:active { transform:scale(0.95); }
.capture-ring {
  width:52px; height:52px; border-radius:50%;
  border:3px solid var(--bg-primary);
  background:white;
}
.camera-label {
  position:absolute; top:12px; left:12px;
  padding:4px 10px; border-radius:100px; font-size:0.75rem; font-weight:500;
  background:rgba(0,0,0,0.5); color:rgba(255,255,255,0.8);
  backdrop-filter:blur(4px); -webkit-backdrop-filter:blur(4px);
}


/* Classify button */
.btn-classify {
  width:100%; padding:16px; border:none; border-radius:var(--radius-sm);
  background:linear-gradient(135deg,var(--accent),#818cf8); color:white;
  font-family:inherit; font-size:1rem; font-weight:600; cursor:pointer;
  transition:var(--transition); position:relative; overflow:hidden; letter-spacing:0.02em;
}
.btn-classify:hover:not(:disabled) { transform:translateY(-1px); box-shadow:0 8px 25px var(--accent-glow); }
.btn-classify:active:not(:disabled) { transform:translateY(0); }
.btn-classify:disabled { opacity:0.4; cursor:not-allowed; }
.btn-classify .btn-content { display:flex; align-items:center; justify-content:center; gap:8px; }
.spinner {
  display:none; width:20px; height:20px; border:2px solid rgba(255,255,255,0.3);
  border-top-color:white; border-radius:50%; animation:spin 0.7s linear infinite;
}
.btn-classify.loading .spinner { display:block; }
.btn-classify.loading .btn-label { display:none; }
@keyframes spin { to{transform:rotate(360deg)} }

/* Results */
.results-card { display:none; margin-top:24px; animation:slideUp 0.5s cubic-bezier(0.16,1,0.3,1); }
.results-card.visible { display:block; }
@keyframes slideUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }
.results-header { display:flex; align-items:center; gap:10px; margin-bottom:24px; padding-bottom:16px; border-bottom:1px solid var(--border); }
.results-header h2 { font-size:1.1rem; font-weight:600; }
.classification-result { text-align:center; margin-bottom:28px; }
.result-badge {
  display:inline-flex; align-items:center; gap:10px; padding:14px 32px;
  border-radius:100px; font-size:1.3rem; font-weight:700;
  animation:badgePop 0.5s cubic-bezier(0.34,1.56,0.64,1) 0.1s both;
}
.result-badge.cancer { background:var(--cancer-red-glow); color:var(--cancer-red); border:1px solid rgba(239,68,68,0.3); }
.result-badge.normal { background:var(--normal-green-glow); color:var(--normal-green); border:1px solid rgba(34,197,94,0.3); }
.result-badge .badge-icon { width:28px; height:28px; }
@keyframes badgePop { from{opacity:0;transform:scale(0.8)} to{opacity:1;transform:scale(1)} }
.confidence-section { display:flex; flex-direction:column; gap:14px; }
.confidence-row { display:flex; flex-direction:column; gap:6px; }
.confidence-label { display:flex; justify-content:space-between; font-size:0.9rem; }
.confidence-label .name { font-weight:500; }
.confidence-label .value { font-weight:700; font-variant-numeric:tabular-nums; }
.confidence-bar-track { height:10px; background:rgba(255,255,255,0.06); border-radius:100px; overflow:hidden; }
.confidence-bar-fill { height:100%; border-radius:100px; width:0%; transition:width 1s cubic-bezier(0.16,1,0.3,1); }
.confidence-bar-fill.cancer { background:linear-gradient(90deg,var(--cancer-red),#f87171); }
.confidence-bar-fill.normal { background:linear-gradient(90deg,var(--normal-green),#4ade80); }

/* Error */
.error-msg {
  display:none; padding:14px 18px; background:var(--cancer-red-glow);
  border:1px solid rgba(239,68,68,0.25); border-radius:var(--radius-sm);
  color:var(--cancer-red); font-size:0.9rem; margin-bottom:24px; animation:slideUp 0.3s ease;
}
.error-msg.visible { display:flex; align-items:center; gap:10px; }

/* Footer */
.footer { text-align:center; margin-top:48px; font-size:0.8rem; color:var(--text-muted); line-height:1.6; }
.footer a { color:var(--accent); text-decoration:none; }
.footer .disclaimer { margin-top:8px; font-size:0.75rem; opacity:0.7; }

/* Responsive */
@media(max-width:600px){
  .app-container{padding:24px 16px 40px}
  .header h1{font-size:1.8rem}
  .card{padding:20px}
  .upload-zone{padding:32px 16px}
  .result-badge{font-size:1.1rem;padding:12px 24px}
}