/* ═══════════════════════════════════════════════════════════
   Storage — Premium Dark File Browser
   Same design language as Executor
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg-primary: #08080d;
  --bg-secondary: #0f0f17;
  --bg-card: rgba(255, 255, 255, 0.025);
  --bg-card-hover: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --text-primary: #e8e8ed;
  --text-secondary: #8b8b9e;
  --text-tertiary: #5c5c72;
  --accent: #7c3aed;
  --accent-light: #a855f7;
  --accent-dim: rgba(124, 58, 237, 0.15);
  --accent-glow: rgba(124, 58, 237, 0.4);
  --success: #22c55e;
  --error: #ef4444;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ─── Background ─────────────────────────────────────────── */

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.3;
}

.bg-glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  top: -200px;
  left: -100px;
  animation: glow-float 15s ease-in-out infinite;
}

.bg-glow-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.2), transparent 70%);
  bottom: -100px;
  right: -100px;
  animation: glow-float 18s ease-in-out infinite reverse;
}

@keyframes glow-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.1); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ─── Container ──────────────────────────────────────────── */

.container {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  padding-bottom: 100px;
}

/* ─── Header ─────────────────────────────────────────────── */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 0;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(8, 8, 13, 0.7);
  border-bottom: 1px solid var(--border);
  margin: 0 -24px;
  padding-left: 24px;
  padding-right: 24px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
}

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

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 0 20px var(--accent-glow);
}

.logo-text {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

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

.view-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.view-btn {
  padding: 7px 10px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
}

.view-btn:first-child {
  border-right: 1px solid var(--border);
}

.view-btn.active {
  background: var(--accent-dim);
  color: var(--accent-light);
}

.view-btn:hover:not(.active) {
  color: var(--text-secondary);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-card);
}

/* ─── Breadcrumb ─────────────────────────────────────────── */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 20px 0 12px;
  flex-wrap: wrap;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-tertiary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.breadcrumb-item:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

.breadcrumb-item.active {
  color: var(--text-primary);
}

.breadcrumb-sep {
  color: var(--text-tertiary);
  font-size: 12px;
  user-select: none;
}

/* ─── Search ─────────────────────────────────────────────── */

.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  transition: var(--transition);
}

.search-bar:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.search-bar svg {
  color: var(--text-tertiary);
  flex-shrink: 0;
}

#search-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 14px;
}

#search-input::placeholder {
  color: var(--text-tertiary);
}

/* ─── File Grid ──────────────────────────────────────────── */

.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.file-grid.list-view {
  grid-template-columns: 1fr;
  gap: 4px;
}

/* ─── File Card (Grid) ───────────────────────────────────── */

.file-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  animation: fadeInUp 0.3s ease both;
}

.file-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.file-card-preview {
  aspect-ratio: 16/9;
  background: rgba(255,255,255,0.02);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.file-card-preview video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.file-card-preview .file-icon-large {
  color: var(--text-tertiary);
  opacity: 0.5;
}

.folder-icon-large {
  color: var(--accent-light);
  opacity: 0.8 !important;
}

.file-card-body {
  padding: 12px;
}

.file-card-name {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  word-break: break-word;
}

.file-card-meta {
  font-size: 11px;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.file-ext-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.file-ext-badge.mp4 { background: rgba(34,197,94,0.15); color: #22c55e; }
.file-ext-badge.mkv { background: rgba(59,130,246,0.15); color: #3b82f6; }
.file-ext-badge.webm { background: rgba(245,158,11,0.15); color: #f59e0b; }
.file-ext-badge.mp3 { background: rgba(236,72,153,0.15); color: #ec4899; }
.file-ext-badge.folder { background: var(--accent-dim); color: var(--accent-light); }

/* ─── File Card (List) ───────────────────────────────────── */

.file-grid.list-view .file-card {
  flex-direction: row;
  align-items: center;
}

.file-grid.list-view .file-card-preview {
  width: 48px;
  height: 48px;
  aspect-ratio: auto;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  margin: 8px;
}

.file-grid.list-view .file-card-preview video {
  border-radius: var(--radius-sm);
}

.file-grid.list-view .file-card-body {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px 8px 0;
}

.file-grid.list-view .file-card-name {
  margin-bottom: 0;
  -webkit-line-clamp: 1;
}

.file-grid.list-view .file-card:hover {
  transform: none;
}

/* ─── Loading / Empty ────────────────────────────────────── */

.loading-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 60px;
  color: var(--text-tertiary);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid rgba(255,255,255,0.1);
  border-top-color: var(--accent-light);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 80px 16px;
  text-align: center;
  color: var(--text-tertiary);
}

.empty-state h3 {
  color: var(--text-secondary);
  font-size: 18px;
}

.empty-state a {
  color: var(--accent-light);
  text-decoration: none;
}

.empty-state a:hover {
  text-decoration: underline;
}

/* ─── Animations ─────────────────────────────────────────── */

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

/* ─── Mobile ─────────────────────────────────────────────── */

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
    padding-bottom: 60px;
  }

  .header {
    margin: 0 -16px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .file-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 10px;
  }

  .file-card-name {
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .file-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .file-card-body {
    padding: 8px;
  }

  .nav-link span {
    display: none;
  }
}

/* ─── Scrollbar ──────────────────────────────────────────── */

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

::selection {
  background: var(--accent-dim);
  color: var(--text-primary);
}

.hidden {
  display: none !important;
}