/* ========================================================
   VAULT CDN: DESIGN SYSTEM & INTERFACE STYLESHEET
   Clean, Craftsmanship-First Architecture (Anti-Slop)
   ======================================================== */

:root {
  /* Dark Obsidian Theme (Default) */
  --bg-canvas: #0c0e12;
  --bg-surface: #13171e;
  --bg-surface-elevated: #1a202a;
  --bg-surface-subtle: #232b38;
  --bg-input: #0f1217;

  --border-rule: #2a3340;
  --border-rule-subtle: #1e242d;
  --border-focus: #f59e0b;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-primary: #f59e0b;
  --accent-primary-hover: #d97706;
  --accent-text: #0f172a;
  --accent-subtle: rgba(245, 158, 11, 0.12);
  --accent-border: rgba(245, 158, 11, 0.35);

  --badge-bg: #1e293b;
  --badge-text: #cbd5e1;
  --status-ready: #10b981;
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.35);
  --accent-emerald-subtle: rgba(16, 185, 129, 0.1);

  --error-bg: #450a0a;
  --error-border: #dc2626;
  --error-text: #fca5a5;

  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --dur-fast: 150ms;
  --dur-base: 220ms;
}

[data-theme="light"] {
  --bg-canvas: #f8f9fa;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f3f5;
  --bg-surface-subtle: #e9ecef;
  --bg-input: #ffffff;

  --border-rule: #ced4da;
  --border-rule-subtle: #e9ecef;
  --border-focus: #b45309;

  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --accent-primary: #b45309;
  --accent-primary-hover: #92400e;
  --accent-text: #ffffff;
  --accent-subtle: #fef3c7;
  --accent-border: #fcd34d;

  --badge-bg: #f1f5f9;
  --badge-text: #334155;
  --status-ready: #059669;

  --error-bg: #fef2f2;
  --error-border: #ef4444;
  --error-text: #b91c1c;
}

/* Reset & Accessibility Standards (R-39) */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a[href], button, input[type="file"], select, [role="button"], [role="tab"] {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Top Navbar */
.navbar {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-rule);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 12px 0;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-badge {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background-color: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-text {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-title strong {
  color: var(--accent-primary);
}

.brand-version {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-emerald);
  background-color: var(--accent-emerald-subtle);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  transition: color var(--dur-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-rule);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  min-height: 36px;
  transition: border-color var(--dur-fast), color var(--dur-fast);
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  background-color: var(--bg-surface-elevated);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-rule);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--status-ready);
}

/* Hero Section */
.hero-section {
  padding: 44px 0 28px;
}

.hero-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 32px;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-rule);
  color: var(--accent-primary);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

.hero-title {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.hero-accent {
  color: var(--accent-primary);
}

.hero-subtitle {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Dropzone Interactive Card */
.dropzone-card {
  background-color: var(--bg-surface);
  border: 2px dashed var(--border-rule);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  transition: border-color var(--dur-base), background-color var(--dur-base);
}

.dropzone-card.drag-active {
  border-color: var(--accent-primary);
  background-color: var(--accent-subtle);
}

/* Animated Moving Circular Stage */
.dropzone-icon-stage {
  position: relative;
  width: 104px;
  height: 104px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 1. Concentric Pulsing Expansion Waves */
.moving-circle-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1.5px solid var(--accent-primary);
  opacity: 0;
  pointer-events: none;
  animation: circleWave 3.2s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}

.moving-circle-pulse.pulse-delay {
  border-color: var(--accent-emerald);
  animation-delay: 1.6s;
}

@keyframes circleWave {
  0% {
    transform: scale(0.65);
    opacity: 0.8;
  }
  50% {
    opacity: 0.35;
  }
  100% {
    transform: scale(1.35);
    opacity: 0;
  }
}

/* 2. Rotating Orbital Track with Traveling Satellite Dot */
.moving-circle-orbit {
  position: absolute;
  width: 86px;
  height: 86px;
  border-radius: 50%;
  border: 1.5px dashed rgba(16, 185, 129, 0.35);
  animation: orbitSpin 8s linear infinite;
  pointer-events: none;
}

.orbit-satellite {
  position: absolute;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald), 0 0 3px #6ee7b7;
}

@keyframes orbitSpin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* 3. Concentric Secondary Ring */
.moving-circle-radar {
  position: absolute;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1px dotted rgba(245, 158, 11, 0.4);
  animation: radarRotate 14s linear infinite reverse;
  opacity: 0.7;
  pointer-events: none;
}

@keyframes radarRotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Center Upload Ring */
.dropzone-icon-ring {
  position: relative;
  z-index: 2;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--bg-surface-elevated);
  border: 1.5px solid var(--border-rule);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.08);
  transition: transform var(--dur-base), border-color var(--dur-base), box-shadow var(--dur-base);
}

.dropzone-card:hover .dropzone-icon-ring,
.dropzone-card.drag-active .dropzone-icon-ring {
  transform: scale(1.08);
  border-color: var(--accent-emerald);
  color: var(--accent-emerald);
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.25);
}
}

.dropzone-card.drag-active .moving-circle-orbit {
  animation-duration: 3s;
  border-color: var(--accent-primary);
}

.dropzone-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.dropzone-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 24px;
}

.dropzone-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--accent-primary);
  color: var(--accent-text);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  padding: 0 22px;
  border-radius: var(--radius-md);
  min-height: 44px;
  transition: background-color var(--dur-fast);
}

.btn-primary:hover {
  background-color: var(--accent-primary-hover);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-rule);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0 20px;
  border-radius: var(--radius-md);
  min-height: 44px;
  transition: border-color var(--dur-fast), color var(--dur-fast);
}

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

.dropzone-specs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.spec-pill-emerald {
  color: #34d399;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.status-dot-emerald {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 6px var(--accent-emerald);
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.45;
    transform: scale(0.85);
  }
}

.spec-sep {
  color: var(--border-rule);
}

/* Progress Bar */
.progress-container {
  margin-top: 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-rule);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
  font-size: 0.88rem;
}

.progress-size {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-left: 6px;
}

.progress-percent {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-primary);
}

.progress-bar-track {
  width: 100%;
  height: 6px;
  background-color: var(--bg-surface-subtle);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--accent-primary);
  transition: width var(--dur-fast) ease-out;
}

.progress-status {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Error Alert */
.error-alert {
  margin: 16px 0;
  background-color: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
}

.error-label {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  background-color: var(--error-border);
  color: #fff;
  padding: 2px 6px;
  border-radius: 2px;
  flex-shrink: 0;
}

.error-text {
  flex: 1;
}

.error-dismiss {
  background: transparent;
  border: none;
  color: var(--error-text);
  font-size: 1.1rem;
  padding: 4px;
}

/* Result Section */
.result-section {
  margin: 32px 0 44px;
}

.result-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-rule);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.result-header {
  padding: 16px 20px;
  background-color: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-rule);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.result-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.result-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  background-color: var(--status-ready);
  color: #fff;
  padding: 2px 8px;
  border-radius: 3px;
}

.result-filename {
  font-size: 1rem;
  font-weight: 700;
  max-width: 480px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-meta-tags {
  display: flex;
  gap: 6px;
}

.tag-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-rule);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.result-body {
  display: flex;
  gap: 24px;
  padding: 24px;
}

.preview-box {
  width: 220px;
  height: 200px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-rule);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.preview-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.generic-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}

.preview-ext {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-rule);
  padding: 2px 8px;
  border-radius: 2px;
  color: var(--text-primary);
}

.links-box {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.link-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.link-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.copy-field {
  display: flex;
  gap: 6px;
}

.copy-field input {
  flex: 1;
  background-color: var(--bg-input);
  border: 1px solid var(--border-rule);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  min-height: 40px;
}

.btn-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-rule);
  padding: 0 14px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  min-height: 40px;
  transition: background-color var(--dur-fast), border-color var(--dur-fast);
}

.btn-copy:hover {
  background-color: var(--accent-subtle);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-surface-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-rule);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.btn-icon:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.checksum-item {
  padding-top: 8px;
  border-top: 1px solid var(--border-rule-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.checksum-title {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.checksum-code {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--accent-primary);
  word-break: break-all;
}

/* History Section */
.history-section {
  margin: 40px 0;
}

.section-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 14px;
  gap: 16px;
  flex-wrap: wrap;
}

.section-title-wrap {
  flex: 1;
}

.section-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.section-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.btn-text-danger {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 4px 8px;
}

.btn-text-danger:hover {
  color: var(--error-border);
}

.history-table-wrapper {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-rule);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.history-table th {
  padding: 10px 16px;
  background-color: var(--bg-surface-elevated);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-rule);
}

.history-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-rule-subtle);
  vertical-align: middle;
}

.history-table tr:hover td {
  background-color: var(--bg-surface-elevated);
}

.empty-row td {
  text-align: center;
  color: var(--text-muted);
  padding: 32px 16px;
}

.text-right {
  text-align: right;
}

.history-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-rule);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  min-height: 32px;
}

.history-link-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* API Section */
.api-section {
  margin: 40px 0 60px;
}

.api-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-rule);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.api-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.api-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.api-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 18px;
}

.api-desc code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background-color: var(--bg-surface-elevated);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--text-primary);
}

.code-tabs {
  background-color: var(--bg-input);
  border: 1px solid var(--border-rule);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-tab-nav {
  display: flex;
  background-color: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-rule);
}

.code-tab-btn {
  background: transparent;
  border: none;
  border-right: 1px solid var(--border-rule);
  color: var(--text-secondary);
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  min-height: 38px;
}

.code-tab-btn.active {
  background-color: var(--bg-input);
  color: var(--accent-primary);
  border-bottom: 2px solid var(--accent-primary);
}

.code-snippet-panel pre {
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.host-url {
  color: var(--accent-primary);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-focus);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  z-index: 1000;
}

.toast-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-primary);
}

/* Footer */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--border-rule);
  padding: 24px 0;
  background-color: var(--bg-surface);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

/* Responsive Mobile Layout (R-03 & antislop-layoutmobile) */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .dropzone-card {
    padding: 32px 16px;
  }

  .result-body {
    flex-direction: column;
  }

  .preview-box {
    width: 100%;
    height: 160px;
  }

  .copy-field {
    flex-direction: column;
  }

  .btn-icon {
    display: none;
  }

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Reduced Motion Mode (R-39) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}