/* ─── Reset & base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0b0b0f;
  --surface:   #13131a;
  --surface2:  #1c1c27;
  --border:    rgba(255,255,255,0.08);
  --text:      #f0f0f5;
  --text-muted:#8888aa;
  --accent1:   #7c3aed;
  --accent2:   #06b6d4;
  --grad:      linear-gradient(135deg, var(--accent1), var(--accent2));
  --radius:    18px;
  --radius-sm: 12px;
  --shadow:    0 12px 48px rgba(0,0,0,0.7);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --dur:       0.28s;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  overflow: hidden;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

/* ─── Loading screen ──────────────────────────────────────────────────────── */
#loading-screen {
  position: fixed; inset: 0;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  transition: opacity 0.6s var(--ease-out);
}
#loading-screen.fade-out { opacity: 0; pointer-events: none; }

.loader-content {
  display: flex; flex-direction: column; align-items: center; gap: 22px;
  width: 290px;
  animation: loaderIn 0.7s var(--ease-spring) both;
}
@keyframes loaderIn {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Spinner with dual rings */
.loader-ring {
  width: 88px; height: 88px;
  position: relative;
  display: flex; align-items: center; justify-content: center;
}
.loader-ring::before,
.loader-ring::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: 50%;
}
.loader-ring::before {
  background: conic-gradient(from 0deg, var(--accent1) 0%, var(--accent2) 60%, transparent 70%);
  animation: spin 1.1s linear infinite;
  mask: radial-gradient(farthest-side, transparent calc(100% - 7px), #000 calc(100% - 7px));
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 7px), #000 calc(100% - 7px));
}
.loader-ring::after {
  background: conic-gradient(from 180deg, var(--accent2) 0%, transparent 50%);
  animation: spin 1.1s linear infinite reverse;
  opacity: 0.35;
  mask: radial-gradient(farthest-side, transparent calc(100% - 7px), #000 calc(100% - 7px));
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 7px), #000 calc(100% - 7px));
}
.loader-ring-inner {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--bg);
  box-shadow: 0 0 0 1px var(--border) inset;
  display: flex; align-items: center; justify-content: center;
  animation: loaderPulse 2s ease-in-out infinite;
}
@keyframes loaderPulse {
  0%,100% { box-shadow: 0 0 0 0px rgba(124,58,237,0.0), 0 0 0 1px var(--border) inset; }
  50%      { box-shadow: 0 0 0 6px rgba(124,58,237,0.12), 0 0 0 1px var(--border) inset; }
}
@keyframes spin { to { transform: rotate(360deg); } }

.loader-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.5rem; font-weight: 700;
  letter-spacing: -0.01em;
}
.loader-logo .material-icons-round {
  font-size: 2rem;
  background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

#loading-status {
  color: var(--text-muted); font-size: 0.875rem;
  text-align: center; line-height: 1.6;
  transition: color 0.3s ease;
  min-height: 1.4em;
}

.loader-bar-track {
  width: 100%; height: 3px; background: rgba(255,255,255,0.06);
  border-radius: 99px; overflow: hidden;
}
.loader-bar {
  height: 100%; width: 0%;
  background: var(--grad);
  border-radius: 99px;
  transition: width 0.5s var(--ease-out);
  box-shadow: 0 0 10px rgba(124,58,237,0.6);
}

/* ─── App layout ──────────────────────────────────────────────────────────── */
#app {
  display: flex; flex-direction: column;
  height: 100vh; height: 100dvh;
  position: relative;
  opacity: 0; transform: scale(0.98);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}
#app.visible { opacity: 1; transform: scale(1); }
.hidden { display: none !important; }

/* ─── Top bar ─────────────────────────────────────────────────────────────── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px;
  background: rgba(11,11,15,0.9);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--border);
  z-index: 10;
  flex-shrink: 0;
}

.topbar-logo {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 1.1rem;
  letter-spacing: -0.02em;
}
.topbar-logo .material-icons-round {
  font-size: 1.4rem;
  background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.topbar-actions { display: flex; gap: 8px; }

.btn-icon {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur) var(--ease-in-out),
              color var(--dur) var(--ease-in-out),
              box-shadow var(--dur) var(--ease-in-out),
              transform 0.18s var(--ease-spring);
  will-change: transform;
}
.btn-icon:hover { background: var(--surface); color: var(--text); }
.btn-icon:active { transform: scale(0.88); }
.btn-icon.active {
  background: linear-gradient(135deg, rgba(124,58,237,0.9), rgba(6,182,212,0.5));
  border-color: rgba(124,58,237,0.6);
  color: #fff;
  box-shadow: 0 0 0 3px rgba(124,58,237,0.2), 0 0 20px rgba(124,58,237,0.35);
}
.btn-icon.spinning .material-icons-round { animation: btnSpin 0.6s var(--ease-spring); }
@keyframes btnSpin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.btn-icon .material-icons-round { font-size: 1.2rem; transition: transform 0.3s var(--ease-spring); }

/* ─── Viewfinder ──────────────────────────────────────────────────────────── */
.viewfinder {
  position: relative;
  flex: 1;
  background: #000;
  overflow: hidden;
  min-height: 0;
}

#video {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: filter 0.3s ease;
}
.viewfinder.scanning #video { filter: brightness(1.08) contrast(1.05); }

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

/* Detection flash overlay */
.detect-flash {
  position: absolute; inset: 0;
  background: rgba(255,255,255,0);
  pointer-events: none;
  z-index: 5;
  transition: background 0.08s ease;
}
.detect-flash.flash { background: rgba(255,255,255,0.12); }

/* Bracket corners — pulse when detecting */
.bracket {
  position: absolute;
  width: 30px; height: 30px;
  border-color: var(--accent2);
  border-style: solid;
  border-width: 0;
  transition: border-color 0.4s ease, width 0.4s var(--ease-spring), height 0.4s var(--ease-spring), opacity 0.4s ease;
  will-change: transform;
}
.bracket.tl { top: 16px; left: 16px; border-top-width: 3px; border-left-width: 3px; border-radius: 5px 0 0 0; }
.bracket.tr { top: 16px; right: 16px; border-top-width: 3px; border-right-width: 3px; border-radius: 0 5px 0 0; }
.bracket.bl { bottom: 16px; left: 16px; border-bottom-width: 3px; border-left-width: 3px; border-radius: 0 0 0 5px; }
.bracket.br { bottom: 16px; right: 16px; border-bottom-width: 3px; border-right-width: 3px; border-radius: 0 0 5px 0; }

.viewfinder.detecting .bracket { border-color: var(--accent1); }
.viewfinder.detecting .bracket.tl { animation: bracketPulseTL 1.5s var(--ease-in-out) infinite; }
.viewfinder.detecting .bracket.tr { animation: bracketPulseTR 1.5s var(--ease-in-out) infinite; }
.viewfinder.detecting .bracket.bl { animation: bracketPulseBL 1.5s var(--ease-in-out) infinite; }
.viewfinder.detecting .bracket.br { animation: bracketPulseBR 1.5s var(--ease-in-out) infinite; }

@keyframes bracketPulseTL  { 0%,100% { transform: translate(0,0); } 50% { transform: translate(-2px,-2px); } }
@keyframes bracketPulseTR  { 0%,100% { transform: translate(0,0); } 50% { transform: translate(2px,-2px); } }
@keyframes bracketPulseBL  { 0%,100% { transform: translate(0,0); } 50% { transform: translate(-2px,2px); } }
@keyframes bracketPulseBR  { 0%,100% { transform: translate(0,0); } 50% { transform: translate(2px,2px); } }

/* Scan line — smoother with blur glow */
.scan-line {
  position: absolute; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(6,182,212,0.2) 10%,
    var(--accent2) 40%,
    var(--accent1) 60%,
    rgba(124,58,237,0.2) 90%,
    transparent 100%);
  filter: blur(0.5px);
  box-shadow: 0 0 10px var(--accent2), 0 0 30px rgba(6,182,212,0.25);
  top: 0; opacity: 0;
  transition: opacity 0.4s ease;
  will-change: top;
}
.scan-line.active {
  opacity: 1;
  animation: scanMove 2.5s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}
@keyframes scanMove {
  0%   { top: 3%; }
  50%  { top: 93%; }
  100% { top: 3%; }
}

/* Status badge */
.status-badge {
  position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 6px;
  background: rgba(11,11,15,0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 7px 16px;
  font-size: 0.78rem; color: var(--text-muted);
  white-space: nowrap;
  transition: color 0.35s ease, border-color 0.35s ease,
              box-shadow 0.35s ease, transform 0.35s var(--ease-spring);
  will-change: transform;
}
.status-badge .material-icons-round {
  font-size: 1rem;
  transition: transform 0.4s var(--ease-spring);
}
.status-badge.detecting {
  color: var(--accent2);
  border-color: rgba(6,182,212,0.5);
  box-shadow: 0 0 0 3px rgba(6,182,212,0.1), 0 4px 20px rgba(6,182,212,0.15);
}
.status-badge.detecting .material-icons-round {
  animation: radarSpin 2s linear infinite;
}
@keyframes radarSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ─── Scan area ───────────────────────────────────────────────────────────── */
.scan-area {
  flex-shrink: 0;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 20px 20px 22px;
  background: linear-gradient(to bottom, rgba(11,11,15,0) 0%, var(--bg) 30%);
  margin-top: -28px;
  position: relative; z-index: 5;
}

.btn-scan {
  display: flex; align-items: center; gap: 10px;
  padding: 15px 40px;
  border-radius: 99px;
  border: none;
  background: var(--grad);
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: 1rem; font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 28px rgba(124,58,237,0.45), 0 0 0 0px rgba(124,58,237,0.3);
  transition: box-shadow var(--dur) ease, transform 0.2s var(--ease-spring), opacity var(--dur) ease;
  position: relative; overflow: hidden;
  will-change: transform;
  letter-spacing: 0.01em;
}
/* Ripple pseudo */
.btn-scan::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at var(--rx,50%) var(--ry,50%), rgba(255,255,255,0.22) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.5s ease;
}
.btn-scan.rippling::before { opacity: 1; }
/* Shine sweep */
.btn-scan::after {
  content: '';
  position: absolute;
  top: 0; left: -80%; width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  transform: skewX(-20deg);
  transition: left 0s;
}
.btn-scan:not(:disabled):hover {
  box-shadow: 0 6px 36px rgba(124,58,237,0.55), 0 0 0 4px rgba(124,58,237,0.15);
  transform: translateY(-1px);
}
.btn-scan:not(:disabled):hover::after { animation: shineSweep 0.6s ease forwards; }
@keyframes shineSweep { to { left: 140%; } }
.btn-scan:not(:disabled):active { transform: scale(0.95) translateY(0); }
.btn-scan:disabled { opacity: 0.45; cursor: not-allowed; box-shadow: none; }
.btn-scan .material-icons-round { font-size: 1.3rem; transition: transform 0.3s var(--ease-spring); }
.btn-scan:not(:disabled):hover .material-icons-round { transform: scale(1.15) rotate(-8deg); }

/* Idle pulse on scan button */
@keyframes idlePulse {
  0%,100% { box-shadow: 0 4px 28px rgba(124,58,237,0.45), 0 0 0 0px rgba(124,58,237,0.3); }
  50%      { box-shadow: 0 4px 28px rgba(124,58,237,0.6),  0 0 0 8px rgba(124,58,237,0.0); }
}
.btn-scan.idle-pulse { animation: idlePulse 2.5s ease-in-out infinite; }

.hint { font-size: 0.78rem; color: var(--text-muted); transition: opacity 0.3s ease; }
.hint strong { color: var(--text); }

/* ─── Results panel ───────────────────────────────────────────────────────── */
.results-panel {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--surface);
  border-top: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius) var(--radius) 0 0;
  box-shadow: 0 -4px 60px rgba(0,0,0,0.6), 0 -1px 0 rgba(124,58,237,0.2);
  z-index: 50;
  transform: translateY(100%);
  transition: transform 0.45s var(--ease-spring);
  max-height: 75vh;
  display: flex; flex-direction: column;
  will-change: transform;
}
.results-panel.open { transform: translateY(0); }

.results-handle {
  width: 36px; height: 4px;
  background: rgba(255,255,255,0.12);
  border-radius: 99px;
  margin: 10px auto 0;
  flex-shrink: 0;
  transition: width 0.3s var(--ease-spring), background 0.3s ease;
}
.results-panel.open .results-handle { width: 48px; background: rgba(255,255,255,0.2); }

.results-header {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 20px 10px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.results-header .material-icons-round {
  background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  font-size: 1.3rem;
  animation: starSpin 0.6s var(--ease-spring);
}
@keyframes starSpin {
  from { transform: rotate(-90deg) scale(0.5); opacity: 0; }
  to   { transform: rotate(0deg) scale(1); opacity: 1; }
}
.results-header h2 { font-size: 1rem; font-weight: 600; flex: 1; letter-spacing: -0.01em; }

.btn-icon-sm {
  width: 30px; height: 30px; border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent; color: var(--text-muted);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background var(--dur) ease, color var(--dur) ease, transform 0.2s var(--ease-spring);
}
.btn-icon-sm:hover { background: var(--surface2); color: var(--text); }
.btn-icon-sm:active { transform: scale(0.88); }
.btn-icon-sm .material-icons-round { font-size: 0.9rem; }

.results-list {
  overflow-y: auto;
  padding: 10px 20px 28px;
  display: flex; flex-direction: column; gap: 10px;
  overscroll-behavior: contain;
}
.results-list::-webkit-scrollbar { width: 3px; }
.results-list::-webkit-scrollbar-thumb { background: var(--surface2); border-radius: 99px; }

/* Result card */
.result-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex; flex-direction: column; gap: 10px;
  opacity: 0;
  transform: translateY(14px) scale(0.98);
  animation: cardIn 0.45s var(--ease-spring) forwards;
  will-change: transform, opacity;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.result-card:hover {
  border-color: rgba(124,58,237,0.3);
  box-shadow: 0 4px 20px rgba(124,58,237,0.08);
}
@keyframes cardIn {
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.result-card:nth-child(1) { animation-delay: 0.00s; }
.result-card:nth-child(2) { animation-delay: 0.06s; }
.result-card:nth-child(3) { animation-delay: 0.12s; }
.result-card:nth-child(4) { animation-delay: 0.18s; }
.result-card:nth-child(5) { animation-delay: 0.24s; }
.result-card:nth-child(6) { animation-delay: 0.30s; }

.result-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.result-name { font-size: 0.95rem; font-weight: 600; text-transform: capitalize; flex: 1; letter-spacing: -0.01em; }
.result-score {
  font-size: 0.82rem; font-weight: 700;
  background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  white-space: nowrap;
  animation: scoreCount 0.5s var(--ease-out) both;
}
@keyframes scoreCount { from { opacity: 0; transform: translateX(6px); } }

.confidence-track {
  height: 5px; background: rgba(255,255,255,0.06);
  border-radius: 99px; overflow: hidden;
  position: relative;
}
.confidence-fill {
  height: 100%; border-radius: 99px;
  background: var(--grad);
  width: 0%;
  transition: width 0.7s var(--ease-out);
  position: relative;
}
/* Shimmer on confidence fill */
.confidence-fill::after {
  content: '';
  position: absolute; top: 0; left: -50%; width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
  animation: shimmer 1.2s ease 0.8s 1 forwards;
  opacity: 0;
}
@keyframes shimmer { 0% { left: -50%; opacity: 1; } 100% { left: 110%; opacity: 0; } }

.result-links { display: flex; gap: 8px; flex-wrap: wrap; }
.result-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 13px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.78rem; font-weight: 500;
  text-decoration: none;
  transition: border-color var(--dur) ease, color var(--dur) ease,
              background var(--dur) ease, transform 0.18s var(--ease-spring);
  will-change: transform;
}
.result-link:hover {
  border-color: var(--accent2);
  color: var(--accent2);
  background: rgba(6,182,212,0.09);
  transform: translateY(-1px);
}
.result-link:active { transform: scale(0.95); }
.result-link .material-icons-round { font-size: 0.88rem; }

.no-results {
  text-align: center; color: var(--text-muted);
  font-size: 0.875rem; padding: 28px;
  animation: cardIn 0.4s var(--ease-spring) both;
}

/* ─── Skeleton loader ─────────────────────────────────────────────────────── */
.skeleton-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex; flex-direction: column; gap: 10px;
  animation: cardIn 0.3s var(--ease-spring) both;
}
.skeleton-card:nth-child(2) { animation-delay: 0.06s; }
.skeleton-card:nth-child(3) { animation-delay: 0.12s; }
.skel {
  background: linear-gradient(90deg, var(--surface2), rgba(255,255,255,0.06), var(--surface2));
  background-size: 200% 100%;
  border-radius: 99px;
  animation: skelShimmer 1.4s ease infinite;
}
@keyframes skelShimmer { to { background-position: -200% 0; } }
.skel-title { height: 14px; width: 60%; }
.skel-bar   { height: 5px;  width: 100%; border-radius: 99px; }
.skel-tags  { display: flex; gap: 8px; }
.skel-tag   { height: 26px; width: 80px; border-radius: 99px; }

/* ─── Source badge ────────────────────────────────────────────────────────── */
.source-badge {
  display: inline-flex; align-items: center;
  font-size: 0.68rem; color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 5px; padding: 2px 8px;
  letter-spacing: 0.02em;
  font-weight: 500;
}

/* ─── Responsive ──────────────────────────────────────────────────────────── */
@media (min-width: 480px) {
  .results-panel { max-width: 480px; left: 50%; transform: translateX(-50%) translateY(100%); }
  .results-panel.open { transform: translateX(-50%) translateY(0); }
}