/* ===== CSS VARIABLES ===== */
:root {
  --bg: #08080f;
  --surface: #12121e;
  --surface2: #1a1a2e;
  --pink: #ff2d78;
  --purple: #a855f7;
  --cyan: #22d3ee;
  --gold: #fbbf24;
  --muted: #8b8aaa;
  --text: #f0f0ff;
  --text-dim: #c0bfd8;
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s ease;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== UTILITIES ===== */
.hidden { display: none !important; }
.gradient-text {
  background: linear-gradient(135deg, var(--pink), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== LOADING SCREEN ===== */
#loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  flex-direction: column;
}

.loading-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 280px;
}

.loading-star {
  font-size: 48px;
  color: var(--pink);
  animation: spin-star 2s linear infinite;
}

@keyframes spin-star {
  from { transform: rotate(0deg) scale(1); }
  50%  { transform: rotate(180deg) scale(1.2); }
  to   { transform: rotate(360deg) scale(1); }
}

.loading-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 4px;
  background: linear-gradient(135deg, var(--pink), var(--purple), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.loading-subtitle {
  color: var(--muted);
  font-size: 0.9rem;
}

.progress-bar-track {
  width: 100%;
  height: 8px;
  background: var(--surface2);
  border-radius: 99px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--pink), var(--purple), var(--cyan));
  border-radius: 99px;
  transition: width 0.5s ease;
}

.loading-pct {
  color: var(--muted);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
}

/* ===== APP WRAPPER ===== */
#app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 40px;
}

/* ===== HEADER ===== */
header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 20px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 8px;
}

.logo {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: 3px;
  background: linear-gradient(135deg, var(--pink), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ===== SECTIONS ===== */
.section {
  padding: 16px 20px;
  animation: fadeIn 0.4s ease;
  flex: 1;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.section.hidden { display: none !important; }
.section.active { display: block; }

.section-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--pink), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== HERO ===== */
.hero {
  text-align: center;
  margin-bottom: 28px;
  padding-top: 12px;
}

.hero h1 {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 12px;
}

.hero-sub {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 320px;
  margin: 0 auto;
}

/* ===== UPLOAD ZONE ===== */
.upload-zone {
  border: 2px dashed rgba(168, 85, 247, 0.4);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: 20px;
  position: relative;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--pink);
  background: rgba(255, 45, 120, 0.06);
  box-shadow: 0 0 24px rgba(255, 45, 120, 0.15);
  transform: translateY(-2px);
}

.upload-icon {
  font-size: 3rem;
  margin-bottom: 10px;
  display: block;
}

.upload-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.upload-hint {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ===== BUTTONS ===== */
.btn-group {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 99px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn.primary {
  background: linear-gradient(135deg, var(--pink), var(--purple));
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 45, 120, 0.35);
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(255, 45, 120, 0.5);
}

.btn.secondary {
  background: var(--surface2);
  color: var(--text-dim);
  border: 1px solid rgba(255,255,255,0.1);
}

.btn.secondary:hover {
  background: var(--surface);
  color: var(--text);
  border-color: var(--purple);
}

.btn.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid rgba(255,255,255,0.15);
}

.btn.ghost:hover {
  color: var(--text);
  border-color: var(--muted);
}

.btn.capture {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--pink), var(--purple));
  color: #fff;
  font-size: 1.8rem;
  box-shadow: 0 0 24px rgba(255, 45, 120, 0.5);
  padding: 0;
  border: 3px solid rgba(255,255,255,0.3);
}

.btn.capture:hover {
  transform: scale(1.08);
  box-shadow: 0 0 36px rgba(255, 45, 120, 0.7);
}

.btn.capture:active {
  transform: scale(0.95);
}

/* ===== CAMERA SECTION ===== */
#section-camera {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding-top: 20px;
}

.camera-container {
  position: relative;
  width: 100%;
  max-width: 400px;
  aspect-ratio: 3/4;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  box-shadow: 0 0 32px rgba(255, 45, 120, 0.2);
}

#camera-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
  display: block;
}

.face-guide-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -52%);
  width: 55%;
  aspect-ratio: 3/4;
  border: 3px solid rgba(255, 45, 120, 0.7);
  border-radius: 50%;
  box-shadow:
    0 0 0 2000px rgba(0,0,0,0.35),
    inset 0 0 20px rgba(255, 45, 120, 0.1);
  pointer-events: none;
  animation: ring-pulse 2s ease-in-out infinite;
}

@keyframes ring-pulse {
  0%, 100% { border-color: rgba(255, 45, 120, 0.6); box-shadow: 0 0 0 2000px rgba(0,0,0,0.35), 0 0 16px rgba(255, 45, 120, 0.2); }
  50%       { border-color: rgba(168, 85, 247, 0.9); box-shadow: 0 0 0 2000px rgba(0,0,0,0.35), 0 0 28px rgba(168, 85, 247, 0.4); }
}

.camera-btns {
  width: 100%;
  max-width: 400px;
  justify-content: space-between;
  align-items: center;
}

.camera-hint {
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

/* ===== ANALYSIS SECTION ===== */
.photo-preview-wrap {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto 24px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 0 24px rgba(255, 45, 120, 0.2);
}

.photo-preview-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

#face-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.step {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--surface);
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  transition: all var(--transition);
}

.step.active {
  border-color: var(--pink);
  background: rgba(255, 45, 120, 0.07);
  box-shadow: 0 0 16px rgba(255, 45, 120, 0.12);
}

.step.done {
  border-color: var(--cyan);
  background: rgba(34, 211, 238, 0.05);
}

.step-icon {
  font-size: 1.4rem;
  width: 36px;
  text-align: center;
  flex-shrink: 0;
}

.step.active .step-icon {
  animation: pulse-icon 1s ease-in-out infinite;
}

@keyframes pulse-icon {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.2); }
}

.step-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.step-label {
  font-weight: 600;
  font-size: 0.95rem;
}

.step-desc {
  font-size: 0.78rem;
  color: var(--muted);
}

.step-status {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
}

.step.active .step-status::after {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--pink);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.step.done .step-status::after {
  content: '✓';
  color: var(--cyan);
  font-weight: 700;
}

/* ===== ERROR MESSAGE ===== */
.error-msg {
  background: rgba(255, 45, 120, 0.1);
  border: 1px solid rgba(255, 45, 120, 0.3);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  color: var(--text-dim);
  margin-top: 16px;
}

.error-msg p {
  margin-bottom: 12px;
  font-size: 0.9rem;
}

/* ===== RESULTS SECTION ===== */
.top-match-card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  animation: fadeIn 0.5s ease;
}

.match-avatar-area {
  width: 100%;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.idol-real-photo {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center center;
  animation: fadeIn 0.4s ease;
  z-index: 1;
}

.match-emoji {
  font-size: 80px;
  line-height: 1;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.4));
  z-index: 1;
  position: relative;
}

.match-avatar-area::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, var(--surface) 100%);
}

.match-body {
  padding: 16px 20px 20px;
}

.match-group-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 6px;
  background: var(--surface2);
  border: 1px solid rgba(255,255,255,0.1);
}

.match-name {
  font-size: 1.8rem;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 2px;
}

.match-name-kr {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 14px;
}

.match-pct-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.match-pct-label {
  font-size: 0.82rem;
  color: var(--muted);
}

.match-pct-value {
  font-size: 1.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--pink), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.match-bar-track {
  width: 100%;
  height: 8px;
  background: var(--surface2);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 14px;
}

.match-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--pink), var(--purple));
  border-radius: 99px;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.match-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin-bottom: 14px;
}

.trait-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.trait-tag {
  background: var(--surface2);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 99px;
  padding: 4px 12px;
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* ===== RUNNER-UP GRID ===== */
.runner-up-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted);
  margin-bottom: 14px;
  text-align: center;
}

.runner-up-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.runner-up-card {
  background: var(--surface);
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.07);
  transition: transform var(--transition);
  animation: fadeIn 0.5s ease;
  animation-fill-mode: both;
}

.runner-up-card:hover {
  transform: translateY(-3px);
  border-color: rgba(168, 85, 247, 0.4);
}

.ru-avatar {
  width: 100%;
  aspect-ratio: 3 / 4;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  position: relative;
  overflow: hidden;
}

.ru-avatar::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, rgba(0,0,0,0.6) 100%);
}

.ru-body {
  padding: 8px 10px 10px;
}

.ru-name {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ru-group {
  font-size: 0.68rem;
  color: var(--muted);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ru-pct {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--pink);
  margin-bottom: 4px;
}

.ru-bar-track {
  width: 100%;
  height: 4px;
  background: var(--surface2);
  border-radius: 99px;
  overflow: hidden;
}

.ru-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--pink), var(--purple));
  border-radius: 99px;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== RESULT ACTIONS ===== */
.result-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== MOBILE ===== */
@media (max-width: 480px) {
  #app {
    padding-bottom: 32px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .section {
    padding: 12px 16px;
  }

  .camera-container {
    border-radius: 12px;
  }

  .runner-up-grid {
    gap: 8px;
  }

  .ru-avatar {
    font-size: 2rem;
  }
}

/* ===================================================================
   INSTAGRAM SECTION
   =================================================================== */
.insta-section {
  padding: 0 1.25rem 0;
  max-width: 480px;
  margin: 2rem auto 0;
}

.insta-inner {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: linear-gradient(135deg, #1a0a2e 0%, #0d0d1f 60%, #1a0818 100%);
  border: 1px solid rgba(233,30,99,0.25);
  box-shadow: 0 0 40px rgba(233,30,99,0.12), 0 0 80px rgba(156,39,176,0.08);
}

.insta-glow {
  position: absolute;
  top: -60px; left: 50%;
  transform: translateX(-50%);
  width: 300px; height: 120px;
  background: radial-gradient(ellipse, rgba(233,30,99,0.2) 0%, transparent 70%);
  pointer-events: none;
}

.insta-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 2rem 1.5rem;
  text-decoration: none;
  transition: transform 0.2s;
}

.insta-link:hover { transform: translateY(-2px); }

.insta-icon-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.insta-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.insta-handle {
  font-size: 1.05rem;
  font-weight: 700;
  background: linear-gradient(135deg, #f9a825, #e91e63, #9c27b0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.02em;
}

.insta-tagline {
  font-size: 1rem;
  font-weight: 600;
  color: #f1f0ff;
  text-align: center;
  line-height: 1.4;
  margin: 0;
}

.insta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.6rem;
  border-radius: 99px;
  font-size: 0.88rem;
  font-weight: 700;
  background: linear-gradient(135deg, #f9a825, #e91e63 50%, #9c27b0);
  color: white;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 20px rgba(233,30,99,0.35);
  transition: box-shadow 0.2s, transform 0.2s;
}

.insta-link:hover .insta-btn {
  box-shadow: 0 6px 28px rgba(233,30,99,0.55);
  transform: translateY(-1px);
}

/* ===================================================================
   FOOTER
   =================================================================== */
.site-footer {
  margin-top: 3rem;
  border-top: 1px solid rgba(255,255,255,0.07);
  background: #0c0c16;
  padding: 2.5rem 1.25rem;
}

.footer-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.footer-logo {
  font-size: 1.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--pink), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.6rem;
}

.footer-desc {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.footer-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}

.footer-nav a:hover { color: var(--pink); }

.footer-copy {
  color: rgba(255,255,255,0.2);
  font-size: 0.78rem;
}

.visitor-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,45,120,0.08);
  border: 1px solid rgba(255,45,120,0.2);
  border-radius: 99px;
  padding: 0.4rem 1rem;
  margin: 0.75rem auto 1rem;
}

.visitor-badge.hidden { display: none; }

.visitor-icon { font-size: 1rem; }

.visitor-label {
  font-size: 0.8rem;
  color: var(--muted);
}

.visitor-count {
  font-size: 0.95rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--pink), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===================================================================
   HOW IT WORKS (Home page)
   =================================================================== */
.how-it-works {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.07);
}

.hiw-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  text-align: center;
  color: #f1f0ff;
}

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

.hiw-step {
  background: #12121e;
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 14px;
  padding: 1.1rem 0.75rem;
  text-align: center;
}

.hiw-icon {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.hiw-step h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: #f1f0ff;
  margin-bottom: 0.4rem;
}

.hiw-step p {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}

.hiw-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  padding: 0.75rem 1rem;
  background: rgba(168,85,247,0.06);
  border: 1px solid rgba(168,85,247,0.15);
  border-radius: 10px;
}

/* ===================================================================
   IDOL GROUPS SECTION (Home page)
   =================================================================== */
.idol-groups-section {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.07);
}

.group-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.group-badge {
  padding: 0.35rem 0.85rem;
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 600;
  background: rgba(255,45,120,0.08);
  border: 1px solid rgba(255,45,120,0.2);
  color: #ff2d78;
}

/* ===================================================================
   RESULT DISCLAIMER
   =================================================================== */
.result-disclaimer {
  margin-top: 1.5rem;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.3);
  text-align: center;
  line-height: 1.6;
}

.result-disclaimer a {
  color: rgba(168,85,247,0.6);
  text-decoration: underline;
}