/* ========== CSS Variables ========== */
:root {
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --secondary: #ec4899;
  --accent: #06b6d4;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --bg: #ffffff;
  --bg-glass: rgba(255,255,255,0.7);
  --bg-card: rgba(255,255,255,0.6);
  --text: #1e1b4b;
  --text-secondary: #64748b;
  --border: rgba(99,102,241,0.15);
  --shadow: 0 8px 32px rgba(99,102,241,0.1);
  --shadow-lg: 0 16px 48px rgba(99,102,241,0.15);
  --radius: 16px;
  --radius-lg: 24px;
  --blur: blur(16px) saturate(180%);
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #ec4899 50%, #06b6d4 100%);
  --gradient-bg: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --gradient-dark: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
}

[data-theme="dark"] {
  --bg: #0f0c29;
  --bg-glass: rgba(15,12,41,0.7);
  --bg-card: rgba(48,43,99,0.4);
  --text: #e2e8f0;
  --text-secondary: #94a3b8;
  --border: rgba(129,140,248,0.2);
  --shadow: 0 8px 32px rgba(0,0,0,0.3);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.4);
}

/* ========== Reset & Base ========== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--gradient-bg);
  background-size: 400% 400%;
  animation: bgFlow 20s ease infinite;
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: color 0.3s;
}
[data-theme="dark"] body { background: var(--gradient-dark); background-size: 400% 400%; animation: bgFlow 20s ease infinite; }

@keyframes bgFlow {
  0%,100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ========== Floating Orbs ========== */
.floating-orbs { position:fixed; top:0; left:0; width:100%; height:100%; pointer-events:none; z-index:0; overflow:hidden; }
.orb { position:absolute; border-radius:50%; filter:blur(60px); opacity:0.4; animation: float 20s ease-in-out infinite; }
.orb1 { width:300px; height:300px; background:#6366f1; top:10%; left:10%; animation-delay:0s; }
.orb2 { width:250px; height:250px; background:#ec4899; top:60%; right:10%; animation-delay:-5s; }
.orb3 { width:200px; height:200px; background:#06b6d4; bottom:10%; left:30%; animation-delay:-10s; }
.orb4 { width:180px; height:180px; background:#8b5cf6; top:30%; right:30%; animation-delay:-15s; }

@keyframes float {
  0%,100% { transform: translate(0,0) scale(1); }
  25% { transform: translate(30px,-30px) scale(1.1); }
  50% { transform: translate(-20px,20px) scale(0.9); }
  75% { transform: translate(20px,30px) scale(1.05); }
}

/* ========== Layout ========== */
.container { position:relative; z-index:1; max-width:1200px; margin:0 auto; padding:20px; }

/* ========== Header ========== */
.header {
  display:flex; justify-content:space-between; align-items:center;
  padding:20px 30px; margin-bottom:30px;
  background:var(--bg-glass); backdrop-filter:var(--blur); -webkit-backdrop-filter:var(--blur);
  border:1px solid var(--border); border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
}
.logo { display:flex; align-items:center; gap:12px; }
.logo-icon { font-size:2rem; }
.logo-text {
  font-size:1.5rem; font-weight:800;
  background:var(--gradient-primary); -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
  animation: shine 4s ease infinite;
}
@keyframes shine {
  0%,100% { filter: hue-rotate(0deg); }
  50% { filter: hue-rotate(30deg); }
}
.version-badge {
  display:inline-block; padding:2px 10px; border-radius:20px;
  background:var(--gradient-primary); color:#fff; font-size:0.7rem; font-weight:700;
  margin-left:8px; vertical-align:middle;
}
.header-actions { display:flex; align-items:center; gap:12px; }
.theme-toggle, .lang-btn {
  width:42px; height:42px; border-radius:50%; border:1px solid var(--border);
  background:var(--bg-card); backdrop-filter:var(--blur); cursor:pointer;
  display:flex; align-items:center; justify-content:center; font-size:1.2rem;
  transition:all 0.3s; color:var(--text);
}
.theme-toggle:hover, .lang-btn:hover { transform:scale(1.1); box-shadow:var(--shadow); }
.lang-select {
  padding:8px 14px; border-radius:10px; border:1px solid var(--border);
  background:var(--bg-card); backdrop-filter:var(--blur); color:var(--text);
  font-size:0.9rem; cursor:pointer; outline:none;
}

/* ========== Hero ========== */
.hero { text-align:center; margin-bottom:40px; }
.hero h1 {
  font-size:clamp(1.8rem, 4vw, 3rem); font-weight:900; margin-bottom:12px;
  background:var(--gradient-primary); -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero p { font-size:1.1rem; color:var(--text-secondary); max-width:600px; margin:0 auto; }
.hero-badges { display:flex; justify-content:center; gap:10px; margin-top:16px; flex-wrap:wrap; }
.hero-badge {
  padding:6px 16px; border-radius:20px; font-size:0.8rem; font-weight:600;
  background:var(--bg-card); border:1px solid var(--border); backdrop-filter:var(--blur);
  color:var(--text-secondary);
}
.hero-badge.active { background:var(--gradient-primary); color:#fff; border:none; }

/* ========== Tabs ========== */
.tabs {
  display:flex; gap:8px; margin-bottom:30px; padding:8px;
  background:var(--bg-glass); backdrop-filter:var(--blur); border-radius:var(--radius-lg);
  border:1px solid var(--border); box-shadow:var(--shadow);
}
.tab-btn {
  flex:1; padding:14px 20px; border:none; border-radius:12px; cursor:pointer;
  background:transparent; color:var(--text-secondary); font-size:1rem; font-weight:600;
  transition:all 0.3s; display:flex; align-items:center; justify-content:center; gap:8px;
}
.tab-btn:hover { color:var(--text); background:rgba(99,102,241,0.08); }
.tab-btn.active {
  background:var(--gradient-primary); color:#fff; box-shadow:var(--shadow);
  transform:translateY(-1px);
}

/* ========== Cards ========== */
.card {
  background:var(--bg-card); backdrop-filter:var(--blur); -webkit-backdrop-filter:var(--blur);
  border:1px solid var(--border); border-radius:var(--radius-lg);
  padding:28px; margin-bottom:24px; box-shadow:var(--shadow);
  transition:all 0.3s;
}
.card:hover { box-shadow:var(--shadow-lg); transform:translateY(-2px); }
.card-title { font-size:1.2rem; font-weight:700; margin-bottom:20px; display:flex; align-items:center; gap:8px; }

/* ========== Form ========== */
.form-group { margin-bottom:18px; }
.form-label { display:block; font-size:0.9rem; font-weight:600; margin-bottom:8px; color:var(--text-secondary); }
.form-input, .form-select, .form-textarea {
  width:100%; padding:12px 16px; border:1px solid var(--border); border-radius:12px;
  background:var(--bg-glass); backdrop-filter:var(--blur); color:var(--text);
  font-size:1rem; outline:none; transition:all 0.3s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color:var(--primary); box-shadow:0 0 0 3px rgba(99,102,241,0.15);
}
.form-textarea { resize:vertical; min-height:80px; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-row-3 { display:grid; grid-template-columns:1fr 1fr 1fr; gap:16px; }

/* ========== Buttons ========== */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 28px; border:none; border-radius:12px; font-size:1rem; font-weight:600;
  cursor:pointer; transition:all 0.3s; position:relative; overflow:hidden;
  color:#fff; background:var(--gradient-primary);
}
.btn:hover { transform:translateY(-2px); box-shadow:var(--shadow-lg); }
.btn:active { transform:translateY(0); }
.btn::after {
  content:''; position:absolute; top:50%; left:50%; width:0; height:0;
  background:rgba(255,255,255,0.3); border-radius:50%; transform:translate(-50%,-50%);
  transition:width 0.4s, height 0.4s;
}
.btn:active::after { width:200px; height:200px; }
.btn-secondary {
  background:var(--bg-card); color:var(--text); border:1px solid var(--border);
}
.btn-secondary:hover { background:rgba(99,102,241,0.1); }
.btn-success { background:linear-gradient(135deg,#10b981,#059669); }
.btn-danger { background:linear-gradient(135deg,#ef4444,#dc2626); }
.btn-sm { padding:8px 16px; font-size:0.85rem; border-radius:10px; }

/* ========== Color Picker ========== */
.color-pickers { display:flex; gap:16px; flex-wrap:wrap; }
.color-picker-wrap { display:flex; align-items:center; gap:8px; }
.color-picker-wrap label { font-size:0.85rem; color:var(--text-secondary); white-space:nowrap; }
input[type="color"] {
  width:48px; height:40px; border:1px solid var(--border); border-radius:10px;
  background:var(--bg-glass); cursor:pointer; padding:4px;
}

/* ========== Slider ========== */
input[type="range"] {
  -webkit-appearance:none; width:100%; height:6px; border-radius:3px;
  background:linear-gradient(90deg,var(--primary),var(--secondary)); outline:none; margin:8px 0;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance:none; width:20px; height:20px; border-radius:50%;
  background:#fff; border:3px solid var(--primary); cursor:pointer; box-shadow:var(--shadow);
}

/* ========== Style Cards ========== */
.style-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(140px,1fr)); gap:12px; }
.style-card {
  padding:16px; border:2px solid var(--border); border-radius:14px; cursor:pointer;
  background:var(--bg-glass); backdrop-filter:var(--blur); transition:all 0.3s; text-align:center;
}
.style-card:hover { border-color:var(--primary-light); transform:translateY(-2px); }
.style-card.active { border-color:var(--primary); background:rgba(99,102,241,0.1); }
.style-card-icon { font-size:1.8rem; margin-bottom:6px; }
.style-card-name { font-size:0.85rem; font-weight:600; }

/* ========== Preview ========== */
.preview-area {
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  min-height:280px; padding:24px; border-radius:var(--radius);
  background:repeating-conic-gradient(rgba(99,102,241,0.03) 0% 25%, transparent 0% 50%) 50% / 20px 20px;
  border:1px dashed var(--border); position:relative;
}
.preview-area canvas, .preview-area img { max-width:100%; border-radius:12px; box-shadow:var(--shadow); }
.preview-placeholder { color:var(--text-secondary); text-align:center; font-size:0.95rem; }

/* ========== Barcode Format Select ========== */
.barcode-formats { display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:10px; }
.barcode-format-card {
  padding:14px; border:2px solid var(--border); border-radius:12px; cursor:pointer;
  background:var(--bg-glass); transition:all 0.3s; text-align:center;
}
.barcode-format-card:hover { border-color:var(--primary-light); }
.barcode-format-card.active { border-color:var(--primary); background:rgba(99,102,241,0.1); }
.barcode-format-name { font-weight:700; font-size:0.95rem; }
.barcode-format-desc { font-size:0.75rem; color:var(--text-secondary); margin-top:4px; }

/* ========== Camera ========== */
.camera-container {
  position:relative; width:100%; max-width:500px; margin:0 auto;
  border-radius:var(--radius); overflow:hidden; border:2px solid var(--border);
}
.camera-video { width:100%; display:block; background:#000; }
.camera-overlay {
  position:absolute; top:0; left:0; width:100%; height:100%;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  pointer-events:none;
}
.scan-frame {
  width:70%; height:50%; border:2px solid rgba(99,102,241,0.8); border-radius:16px;
  position:relative;
}
.scan-frame::before, .scan-frame::after { content:''; position:absolute; width:30px; height:30px; border-color:var(--primary); border-style:solid; }
.scan-frame::before { top:-2px; left:-2px; border-width:3px 0 0 3px; border-radius:16px 0 0 0; }
.scan-frame::after { bottom:-2px; right:-2px; border-width:0 3px 3px 0; border-radius:0 0 16px 0; }
.scan-line {
  position:absolute; top:0; left:5%; width:90%; height:3px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
  animation: scanLine 2s ease-in-out infinite;
}
@keyframes scanLine {
  0%,100% { top:5%; }
  50% { top:90%; }
}
.camera-status {
  margin-top:12px; padding:8px 16px; border-radius:20px;
  background:rgba(99,102,241,0.1); font-size:0.85rem; font-weight:600;
  animation:pulse 2s ease infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.6} }

/* ========== History ========== */
.history-list { display:flex; flex-direction:column; gap:10px; max-height:400px; overflow-y:auto; }
.history-item {
  display:flex; align-items:center; gap:12px; padding:12px 16px;
  background:var(--bg-glass); border:1px solid var(--border); border-radius:12px;
  cursor:pointer; transition:all 0.3s;
}
.history-item:hover { background:rgba(99,102,241,0.08); transform:translateX(4px); }
.history-icon { font-size:1.5rem; flex-shrink:0; }
.history-content { flex:1; min-width:0; }
.history-text { font-size:0.9rem; font-weight:600; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.history-meta { font-size:0.75rem; color:var(--text-secondary); margin-top:2px; }
.history-tag {
  padding:2px 8px; border-radius:6px; font-size:0.7rem; font-weight:600; flex-shrink:0;
}
.tag-qr { background:rgba(99,102,241,0.15); color:var(--primary); }
.tag-barcode { background:rgba(6,182,212,0.15); color:var(--accent); }
.tag-encrypted { background:rgba(239,68,68,0.15); color:var(--danger); }

/* ========== Print ========== */
.print-config { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:16px; margin-bottom:20px; }
.print-preview-container {
  background:#fff; border-radius:12px; padding:20px; box-shadow:inset 0 0 20px rgba(0,0,0,0.05);
  max-height:500px; overflow:auto;
}
.print-preview {
  width:210mm; min-height:297mm; background:#fff; margin:0 auto;
  padding:15mm; display:grid; gap:0; position:relative;
}
.print-label {
  border:1px solid #ccc; display:flex; flex-direction:column; align-items:center; justify-content:center;
  padding:8px; break-inside:avoid;
}
.print-label canvas { max-width:100%; }

/* ========== Toast ========== */
.toast-container { position:fixed; top:20px; right:20px; z-index:9999; display:flex; flex-direction:column; gap:8px; }
.toast {
  padding:14px 24px; border-radius:12px; font-size:0.9rem; font-weight:600;
  backdrop-filter:blur(16px); animation:slideIn 0.3s ease;
  box-shadow:var(--shadow-lg); max-width:350px;
}
.toast-success { background:rgba(16,185,129,0.9); color:#fff; }
.toast-error { background:rgba(239,68,68,0.9); color:#fff; }
.toast-info { background:rgba(99,102,241,0.9); color:#fff; }
@keyframes slideIn { from{transform:translateX(100%);opacity:0} to{transform:translateX(0);opacity:1} }

/* ========== Progress ========== */
.progress-bar {
  width:100%; height:8px; background:rgba(99,102,241,0.1); border-radius:4px; overflow:hidden;
  margin:12px 0;
}
.progress-fill {
  height:100%; background:var(--gradient-primary); border-radius:4px;
  transition:width 0.3s ease; width:0%;
}

/* ========== Toggle Switch ========== */
.toggle-row { display:flex; align-items:center; justify-content:space-between; padding:10px 0; }
.toggle-label { font-size:0.9rem; font-weight:500; }
.toggle {
  position:relative; width:48px; height:26px; background:rgba(99,102,241,0.2); border-radius:13px;
  cursor:pointer; transition:all 0.3s;
}
.toggle.active { background:var(--primary); }
.toggle::after {
  content:''; position:absolute; top:3px; left:3px; width:20px; height:20px;
  background:#fff; border-radius:50%; transition:all 0.3s; box-shadow:0 2px 4px rgba(0,0,0,0.2);
}
.toggle.active::after { left:25px; }

/* ========== Encrypt / AI Panels ========== */
.encrypt-panel {
  margin-top:16px; padding:16px; border-radius:12px;
  background:rgba(239,68,68,0.05); border:1px solid rgba(239,68,68,0.2);
}
.encrypt-panel-title { font-weight:700; color:var(--danger); margin-bottom:12px; display:flex; align-items:center; gap:6px; }
.ai-panel {
  margin-top:16px; padding:16px; border-radius:12px;
  background:rgba(99,102,241,0.05); border:1px solid rgba(99,102,241,0.2);
}
.ai-panel-title { font-weight:700; color:var(--primary); margin-bottom:12px; display:flex; align-items:center; gap:6px; }

/* ========== Multi Result ========== */
.multi-result-list { display:flex; flex-direction:column; gap:8px; margin-top:12px; }
.multi-result-item {
  padding:12px 16px; border-radius:10px; background:var(--bg-glass); border:1px solid var(--border);
  display:flex; align-items:center; gap:10px;
}
.multi-result-type { font-size:0.75rem; padding:2px 8px; border-radius:6px; font-weight:600; }
.type-qr { background:rgba(99,102,241,0.15); color:var(--primary); }
.type-code128 { background:rgba(6,182,212,0.15); color:var(--accent); }
.type-code39 { background:rgba(16,185,129,0.15); color:var(--success); }
.type-ean13 { background:rgba(245,158,11,0.15); color:var(--warning); }

/* ========== 3D Preview ========== */
.preview-3d-container { width:100%; max-width:300px; height:300px; margin:0 auto; perspective:800px; }

/* ========== Worker Status ========== */
.worker-status {
  display:inline-flex; align-items:center; gap:6px; padding:4px 12px; border-radius:20px;
  font-size:0.75rem; font-weight:600; background:rgba(16,185,129,0.1); color:var(--success);
}
.worker-dot { width:6px; height:6px; border-radius:50%; background:var(--success); animation:pulse 2s ease infinite; }

/* ========== Footer ========== */
.footer {
  text-align:center; padding:30px; margin-top:40px;
  background:var(--bg-glass); backdrop-filter:var(--blur); border:1px solid var(--border);
  border-radius:var(--radius-lg); color:var(--text-secondary); font-size:0.85rem;
}
.footer a { color:var(--primary); text-decoration:none; margin:0 8px; transition:color 0.3s; }
.footer a:hover { color:var(--primary-light); }

/* ========== Responsive ========== */
@media (max-width:768px) {
  .form-row, .form-row-3 { grid-template-columns:1fr; }
  .header { flex-direction:column; gap:12px; }
  .tabs { flex-wrap:wrap; }
  .tab-btn { flex:1 1 45%; }
  .style-grid { grid-template-columns:repeat(3,1fr); }
}

/* ========== Hidden ========== */
.hidden { display:none !important; }

/* ========== Spinner ========== */
.spinner {
  width:40px; height:40px; border:4px solid rgba(99,102,241,0.2); border-top-color:var(--primary);
  border-radius:50%; animation:spin 0.8s linear infinite; margin:20px auto;
}
@keyframes spin { to{transform:rotate(360deg)} }

/* ========== Drop Zone ========== */
.drop-zone {
  border:2px dashed var(--border); border-radius:12px; padding:30px; text-align:center;
  transition:all 0.3s; cursor:pointer; color:var(--text-secondary);
}
.drop-zone:hover, .drop-zone.dragover {
  border-color:var(--primary); background:rgba(99,102,241,0.05); color:var(--primary);
}

/* ========== Batch Textarea ========== */
.batch-textarea {
  width:100%; min-height:120px; padding:12px; border:1px solid var(--border); border-radius:12px;
  background:var(--bg-glass); color:var(--text); font-size:0.9rem; resize:vertical; outline:none;
  font-family:monospace;
}
.batch-textarea:focus { border-color:var(--primary); box-shadow:0 0 0 3px rgba(99,102,241,0.15); }

/* ========== Tab Content Animation ========== */
.tab-content { animation:fadeIn 0.4s ease; }
@keyframes fadeIn { from{opacity:0;transform:translateY(10px)} to{opacity:1;transform:translateY(0)} }

/* ========== Section Divider ========== */
.section-divider { height:1px; background:linear-gradient(90deg,transparent,var(--border),transparent); margin:24px 0; }

/* ========== Badge ========== */
.inline-badge {
  display:inline-block; padding:2px 8px; border-radius:6px; font-size:0.7rem; font-weight:600;
  background:var(--gradient-primary); color:#fff; margin-left:6px; vertical-align:middle;
}

/* ========== Enhance Compare ========== */
.enhance-compare { display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:12px; }
.enhance-compare-title { font-size:0.75rem; color:var(--text-secondary); text-align:center; margin-bottom:4px; }
.enhance-canvas-wrap {
  border:1px solid var(--border); border-radius:10px; overflow:hidden; background:#000;
  display:flex; align-items:center; justify-content:center; min-height:150px;
}
.enhance-canvas-wrap canvas { max-width:100%; }

/* ========== 3D Modal ========== */
#modal3D {
  position:fixed; top:0; left:0; width:100%; height:100%;
  background:rgba(0,0,0,0.8); z-index:9998;
  display:flex; align-items:center; justify-content:center;
}
#modal3D > div {
  background:var(--bg); border-radius:20px; padding:30px;
  max-width:500px; width:90%; text-align:center; position:relative;
}
#modal3D canvas { width:100%; height:100%; }