@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400..700;1,9..40,400..700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* Default Theme: Basalt (Warm Volcanic Editorial Dark - Master Aesthetic) */
:root {
  --bg-base: #11100f;
  --bg-surface: #1a1917;
  --bg-surface-hover: #24221f;
  --bg-surface-active: #2f2c27;
  --bg-card: rgba(26, 25, 23, 0.95);

  --border-subtle: #292622;
  --border-medium: #3d3934;
  --border-focus: #f59e0b;

  --text-primary: #f5f2eb;
  --text-secondary: #b5afa3;
  --text-muted: #9c9588;
  --text-accent: #f59e0b;

  --accent-primary: #f59e0b;
  --accent-primary-hover: #d97706;
  --accent-primary-text: #11100f;
  --accent-primary-border: #f59e0b;

  --accent-secondary: #2d2a25;
  --accent-green: #34d399;
  --accent-blue: #60a5fa;

  --font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Motion Tokens from MOTION.md (Charlie Hills & Apple Motion Design principles) */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  --duration-instant: 120ms;
  --duration-fast: 180ms;
  --duration-normal: 280ms;
  --duration-enter: 420ms;
}

/* Explicit Warm Basalt (synced with :root) */
html[data-theme="warm"] {
  --bg-base: #11100f;
  --bg-surface: #1a1917;
  --bg-surface-hover: #24221f;
  --bg-surface-active: #2f2c27;
  --bg-card: rgba(26, 25, 23, 0.95);

  --border-subtle: #292622;
  --border-medium: #3d3934;
  --border-focus: #f59e0b;

  --text-primary: #f5f2eb;
  --text-secondary: #b5afa3;
  --text-muted: #9c9588;
  --text-accent: #f59e0b;

  --accent-primary: #f59e0b;
  --accent-primary-hover: #d97706;
  --accent-primary-text: #11100f;
  --accent-primary-border: #f59e0b;

  --accent-secondary: #2d2a25;
  --accent-green: #34d399;
  --accent-blue: #60a5fa;
}

/* Theme 2: Stealth (Zinc Minimalist) */
html[data-theme="stealth"] {
  --bg-base: #09090b;
  --bg-surface: #141417;
  --bg-surface-hover: #1c1c21;
  --bg-surface-active: #26262d;
  --bg-card: rgba(20, 20, 23, 0.95);

  --border-subtle: #222227;
  --border-medium: #303038;
  --border-focus: #9898a4;

  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #9898a4;
  --text-accent: #e4e4e7;

  --accent-primary: #fafafa;
  --accent-primary-hover: #e4e4e7;
  --accent-primary-text: #09090b;
  --accent-primary-border: #fafafa;

  --accent-secondary: #27272a;
  --accent-green: #10b981;
  --accent-blue: #3b82f6;
}

/* Theme 3: Nordic Slate (Oceanic Infrastructure) */
html[data-theme="slate"] {
  --bg-base: #0b0f17;
  --bg-surface: #111827;
  --bg-surface-hover: #182235;
  --bg-surface-active: #202e47;
  --bg-card: rgba(17, 24, 39, 0.95);

  --border-subtle: #1e293b;
  --border-medium: #2e3e5c;
  --border-focus: #60a5fa;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #94a3b8;
  --text-accent: #60a5fa;

  --accent-primary: #3b82f6;
  --accent-primary-hover: #2563eb;
  --accent-primary-text: #ffffff;
  --accent-primary-border: #3b82f6;

  --accent-secondary: #1f293d;
  --accent-green: #10b981;
  --accent-blue: #38bdf8;
}

/* Theme 4: Studio Paper (Clean High-Contrast Light Mode) */
html[data-theme="light"] {
  --bg-base: #f9fafb;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f3f4f6;
  --bg-surface-active: #e5e7eb;
  --bg-card: rgba(255, 255, 255, 0.98);

  --border-subtle: #e5e7eb;
  --border-medium: #d1d5db;
  --border-focus: #111827;

  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #4b5563;
  --text-accent: #111827;

  --accent-primary: #111827;
  --accent-primary-hover: #27272a;
  --accent-primary-text: #ffffff;
  --accent-primary-border: #111827;

  --accent-secondary: #f3f4f6;
  --accent-green: #059669;
  --accent-blue: #2563eb;
}

/* Base & Themed Browser Surfaces */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-wrap: pretty;
}

h1, h2, h3, h4 {
  text-wrap: balance;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  background-color: var(--bg-base);
}

/* Smooth Global Theme & Surface Transitions */
body, .app-header, .search-form, .folder-header, .files-container, .modal-window, .theme-select-box, .btn-primary, .btn-action, .btn-secondary, .file-row, .legal-card, .crypto-card, .notfound-card {
  transition: background-color 0.2s var(--ease-smooth), border-color 0.2s var(--ease-smooth), color 0.2s var(--ease-smooth);
}

/* Keyframes for Orchestrated Entrances */
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

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

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

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

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* Header */
.app-header {
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-base);
  position: sticky;
  top: 0;
  z-index: 40;
  animation: fadeDown 0.35s var(--ease-out-expo) backwards;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: transform var(--duration-fast) var(--ease-spring);
}

.brand:active {
  transform: scale(0.97);
}

.brand-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-spring);
}

.brand:hover .brand-icon {
  transform: rotate(3deg) scale(1.04);
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.brand-lockup {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  line-height: 1;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}

.brand-byline {
  display: inline-flex;
  align-items: baseline;
  gap: 0.2rem;
  user-select: none;
}

.byline-by {
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  opacity: 0.85;
}

.byline-author {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-primary);
  letter-spacing: -0.01em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Selector Control */
.theme-select-box {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.65rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  position: relative;
  transition: border-color var(--duration-fast) var(--ease-out-expo), background-color var(--duration-fast) var(--ease-out-expo), transform var(--duration-instant) var(--ease-spring);
}

.theme-select-box:hover {
  border-color: var(--border-medium);
  background-color: var(--bg-surface-hover);
}

.theme-icon {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-spring);
}

.theme-select-box:hover .theme-icon {
  transform: rotate(15deg);
}

.theme-select {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  outline: none;
  padding-right: 0.2rem;
}

.theme-select option {
  background: var(--bg-surface);
  color: var(--text-primary);
}

.btn-nav-donate {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.95rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  background: var(--bg-surface);
  text-decoration: none;
  transition: background-color var(--duration-fast) var(--ease-out-expo), border-color var(--duration-fast) var(--ease-out-expo), transform var(--duration-instant) var(--ease-spring);
}

.btn-nav-donate:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-focus);
}

.btn-nav-donate:active {
  transform: scale(0.96);
}

.btn-nav-donate.active {
  background: var(--accent-primary);
  color: var(--accent-primary-text);
  border-color: var(--accent-primary);
}

/* Main & Hero */
.main-content {
  flex: 1;
  padding-top: 3.5rem;
  padding-bottom: 4rem;
}

.hero-section {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem auto;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.15;
  margin-bottom: 1rem;
  text-wrap: balance;
  animation: fadeInUp 0.42s var(--ease-out-expo) backwards;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2.25rem;
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
  text-wrap: pretty;
  animation: fadeInUp 0.42s var(--ease-out-expo) backwards;
  animation-delay: 60ms;
}

/* Search Form with Living Micro-interactions */
.search-form {
  display: flex;
  gap: 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 14px;
  padding: 0.5rem;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.4);
  transition: border-color var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo), transform var(--duration-fast) var(--ease-out-expo);
  animation: fadeInUp 0.42s var(--ease-out-expo) backwards;
  animation-delay: 120ms;
}

.search-form:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.45), 0 0 0 3px rgba(245, 158, 11, 0.15);
}

.input-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 0.75rem;
  background: transparent;
}

.input-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: color var(--duration-fast) var(--ease-out-expo);
}

.search-form:focus-within .input-icon {
  color: var(--accent-primary);
}

.input-wrapper input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  font-family: var(--font-sans);
}

.input-wrapper input::placeholder {
  color: var(--text-muted);
}

.btn-paste {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-surface-hover);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
  min-height: 36px;
  transition: background-color var(--duration-fast) var(--ease-out-expo), color var(--duration-fast) var(--ease-out-expo), transform var(--duration-instant) var(--ease-spring);
}

.btn-paste svg {
  width: 14px;
  height: 14px;
}

.btn-paste:hover {
  background: var(--bg-surface-active);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--accent-primary);
  color: var(--accent-primary-text);
  border: 1px solid var(--accent-primary-border, transparent);
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  min-height: 44px;
  cursor: pointer;
  position: relative;
  transition: background-color var(--duration-fast) var(--ease-smooth), box-shadow var(--duration-fast) var(--ease-smooth), transform var(--duration-instant) var(--ease-spring), opacity var(--duration-fast) var(--ease-out-expo);
  white-space: nowrap;
}

.btn-primary:hover {
  background-color: var(--accent-primary-hover);
  box-shadow: 0 4px 14px -2px rgba(245, 158, 11, 0.35);
}

.btn-primary:active {
  transform: scale(0.96);
}

.btn-arrow {
  width: 16px;
  height: 16px;
  transition: transform var(--duration-fast) var(--ease-spring);
}

.btn-primary:hover .btn-arrow {
  transform: translateX(3px);
}

.btn-primary.loading .btn-label,
.btn-primary.loading .btn-arrow {
  opacity: 0;
  visibility: hidden;
}

.btn-primary.loading .spinner {
  display: block;
}

.spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(17, 16, 15, 0.25);
  border-top-color: var(--accent-primary-text);
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
  position: absolute;
}

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

/* Error Card */
.error-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: 10px;
  padding: 0.85rem 1.15rem;
  color: #fca5a5;
  font-size: 0.875rem;
  margin-top: 1rem;
  text-align: left;
  animation: fadeInUp 0.3s var(--ease-out-expo);
}

.error-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: #ef4444;
}

/* Results Section with Smooth Unfurl */
.results-section {
  animation: resultsEnter 0.42s var(--ease-out-expo);
}

@keyframes resultsEnter {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.folder-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 14px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 0.35s var(--ease-out-expo) backwards;
}

.folder-info {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.folder-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.folder-badge svg {
  width: 14px;
  height: 14px;
}

.folder-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  word-break: break-word;
}

.folder-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.meta-tag {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--bg-surface-hover);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  font-variant-numeric: tabular-nums;
  border: 1px solid var(--border-subtle);
}

.folder-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.btn-action {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1.1rem;
  min-height: 40px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--duration-fast) var(--ease-out-expo), border-color var(--duration-fast) var(--ease-out-expo), color var(--duration-fast) var(--ease-out-expo), transform var(--duration-instant) var(--ease-spring), box-shadow var(--duration-fast) var(--ease-out-expo);
}

.btn-action:active {
  transform: scale(0.96);
}

.btn-action svg {
  width: 16px;
  height: 16px;
}

.btn-zip {
  background: var(--accent-primary);
  color: var(--accent-primary-text);
  border: 1px solid var(--accent-primary-border, transparent);
}

.btn-zip:hover {
  background: var(--accent-primary-hover);
  box-shadow: 0 4px 14px -2px rgba(245, 158, 11, 0.35);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

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

/* Toolbar & Filter Wrapper */
.toolbar-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.search-filter {
  flex: 1;
  max-width: 440px;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 0.5rem 0.85rem;
  min-height: 40px;
  transition: border-color var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo);
}

.search-filter:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.12);
}

.search-filter svg {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: color var(--duration-fast) var(--ease-out-expo);
}

.search-filter:focus-within svg {
  color: var(--accent-primary);
}

.search-filter input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
}

.search-filter input::placeholder {
  color: var(--text-muted);
}

.btn-clear-filter {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: color var(--duration-instant) var(--ease-out-expo), transform var(--duration-instant) var(--ease-spring);
}

.btn-clear-filter:hover {
  color: var(--text-primary);
}

.btn-clear-filter:active {
  transform: scale(0.9);
}

.btn-clear-filter svg {
  width: 14px;
  height: 14px;
}

.filter-count {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* Category Filter Pills with Spring Physics */
.category-pills {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.pill-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  min-height: 32px;
  border-radius: 9999px;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-spring);
}

.pill-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.pill-btn:active {
  transform: scale(0.94);
}

.pill-btn.active {
  background: var(--accent-primary);
  color: var(--accent-primary-text);
  border-color: var(--accent-primary);
  font-weight: 600;
  box-shadow: 0 2px 10px -2px rgba(245, 158, 11, 0.35);
}

/* Files Container & Staggered Cascade */
.files-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px -2px rgba(0, 0, 0, 0.2);
}

.files-header {
  display: grid;
  grid-template-columns: 1fr 110px 230px;
  align-items: center;
  padding: 0.75rem 1.25rem;
  background: var(--bg-surface-hover);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.files-list {
  display: flex;
  flex-direction: column;
}

.file-row {
  display: grid;
  grid-template-columns: 1fr 110px 230px;
  align-items: center;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--duration-fast) var(--ease-out-expo), transform var(--duration-fast) var(--ease-out-expo);
  animation: cascadeIn 0.32s var(--ease-out-expo) backwards;
  animation-delay: calc(var(--i, 0) * 28ms);
}

@keyframes cascadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.file-row:last-child {
  border-bottom: none;
}

.file-row:hover {
  background-color: var(--bg-surface-hover);
  transform: translateX(2px);
}

.file-name-cell {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  overflow: hidden;
}

.file-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  color: var(--text-secondary);
  transition: transform var(--duration-fast) var(--ease-spring);
}

.file-row:hover .file-icon {
  transform: scale(1.08);
}

.file-icon.video { color: #f43f5e; }
.file-icon.audio { color: #818cf8; }
.file-icon.image { color: #a855f7; }
.file-icon.archive { color: #f59e0b; }
.file-icon.document { color: #3b82f6; }

.file-name-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.file-title {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-subpath {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-size-cell {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  font-family: var(--font-mono);
}

.file-actions-cell {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.4rem;
}

.btn-file-action {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.7rem;
  min-height: 34px;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  background: var(--bg-surface-active);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  transition: background-color var(--duration-fast) var(--ease-out-expo), color var(--duration-fast) var(--ease-out-expo), border-color var(--duration-fast) var(--ease-out-expo), transform var(--duration-instant) var(--ease-spring), box-shadow var(--duration-fast) var(--ease-out-expo);
}

.btn-file-action svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.btn-file-action:hover {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn-file-action:active {
  transform: scale(0.95);
}

.btn-file-play {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn-file-play:hover {
  background: var(--accent-primary);
  color: var(--accent-primary-text);
  border-color: var(--accent-primary);
  box-shadow: 0 2px 8px -1px rgba(245, 158, 11, 0.35);
}

.btn-file-action.copied {
  background: rgba(52, 211, 153, 0.15);
  border-color: rgba(52, 211, 153, 0.4);
  color: #34d399;
  animation: springPulse 0.3s var(--ease-spring);
}

@keyframes springPulse {
  0% { transform: scale(0.95); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* Modal with Physics-Based Entrance */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 16, 15, 0.85);
  backdrop-filter: blur(12px);
  animation: fadeIn 0.22s var(--ease-out-expo);
}

.modal-window {
  position: relative;
  width: 100%;
  max-width: 860px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 16px;
  box-shadow: 0 24px 60px -12px rgba(0, 0, 0, 0.75);
  overflow: hidden;
  animation: modalSpringIn 0.32s var(--ease-spring);
  display: flex;
  flex-direction: column;
}

@keyframes modalSpringIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-title-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  overflow: hidden;
}

.player-type-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-primary);
  background: var(--bg-surface-active);
  border: 1px solid var(--border-medium);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.player-filename {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.35rem;
  min-height: 36px;
  min-width: 36px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--duration-fast) var(--ease-out-expo), background-color var(--duration-fast) var(--ease-out-expo), transform var(--duration-instant) var(--ease-spring);
}

.modal-close:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
  transform: scale(1.08);
}

.modal-close:active {
  transform: scale(0.92);
}

.modal-close svg {
  width: 20px;
  height: 20px;
}

.player-content {
  background: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 380px;
  max-height: 70vh;
}

.media-element {
  width: 100%;
  max-height: 65vh;
  outline: none;
}

.audio-box {
  width: 100%;
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  background: linear-gradient(180deg, var(--bg-surface) 0%, #000000 100%);
}

.audio-artwork {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--bg-surface-active);
  border: 2px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.4);
}

/* Sound Wave Equalizer (Living Hold — 9 Organic Resonant Bars) */
.sound-wave {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 34px;
  padding: 0 4px;
}

.sound-wave .bar {
  width: 3.5px;
  background-color: var(--accent-primary);
  border-radius: 2px;
  height: 6px;
  transition: height 0.2s var(--ease-out-expo), background-color 0.2s ease;
}

.sound-wave.playing .bar {
  animation: soundwaveOrganic 1.35s infinite ease-in-out alternate;
}

.sound-wave.playing .bar-1 { animation-delay: 0.05s; }
.sound-wave.playing .bar-2 { animation-delay: 0.35s; }
.sound-wave.playing .bar-3 { animation-delay: 0.15s; }
.sound-wave.playing .bar-4 { animation-delay: 0.45s; }
.sound-wave.playing .bar-5 { animation-delay: 0.0s; }
.sound-wave.playing .bar-6 { animation-delay: 0.5s; }
.sound-wave.playing .bar-7 { animation-delay: 0.2s; }
.sound-wave.playing .bar-8 { animation-delay: 0.4s; }
.sound-wave.playing .bar-9 { animation-delay: 0.1s; }

@keyframes soundwaveOrganic {
  0% { height: 5px; opacity: 0.7; }
  35% { height: 26px; opacity: 1; }
  70% { height: 12px; opacity: 0.85; }
  100% { height: 32px; opacity: 1; }
}

.modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.stream-link-box {
  display: flex;
  gap: 0.5rem;
}

.stream-link-box input {
  flex: 1;
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

.btn-copy-small {
  background: var(--bg-surface-hover);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 0 0.85rem;
  min-height: 36px;
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-out-expo), border-color var(--duration-fast) var(--ease-out-expo), transform var(--duration-instant) var(--ease-spring);
  white-space: nowrap;
}

.btn-copy-small:hover {
  background: var(--bg-surface-active);
  border-color: var(--border-focus);
}

.btn-copy-small:active {
  transform: scale(0.96);
}

.player-controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.player-shortcuts-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.player-shortcuts-hint kbd {
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

.modal-download-action {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.modal-download-action svg {
  width: 14px;
  height: 14px;
}

.modal-download-action:hover {
  text-decoration: underline;
}

/* Toast with Spring Entrance */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 120;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.55);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  animation: toastSpringIn 0.3s var(--ease-spring);
}

@keyframes toastSpringIn {
  from { opacity: 0; transform: translateY(16px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.toast-icon {
  width: 16px;
  height: 16px;
  color: var(--accent-green);
}

/* Footer */
.app-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 2.25rem 0 2rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  text-align: center;
}

.footer-links-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--duration-fast) var(--ease-out-expo), transform var(--duration-instant) var(--ease-spring);
}

.footer-social-link:hover {
  color: var(--text-primary);
  transform: translateY(-1px);
}

.footer-separator {
  color: var(--border-medium);
}

.social-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.footer-nav-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.footer-nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8125rem;
  transition: color var(--duration-fast) var(--ease-out-expo);
}

.footer-nav-link:hover {
  color: var(--text-primary);
  text-decoration: underline;
}

.footer-theme-row {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 0.25rem;
}

/* Legal & Donate Pages */
.legal-article {
  max-width: 680px;
  margin: 2.5rem auto 4rem;
  width: 100%;
  animation: fadeInUp 0.4s var(--ease-out-expo) backwards;
}

.legal-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.badge-legal {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.8rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.badge-legal svg {
  width: 14px;
  height: 14px;
}

.legal-title {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.legal-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 52ch;
  margin: 0 auto;
  text-wrap: pretty;
}

.legal-card {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.legal-section {
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-subtle);
}

.legal-section:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.legal-section h2 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.legal-section p,
.legal-section ul,
.legal-section ol {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 50ch;
  margin-bottom: 0.85rem;
  text-wrap: pretty;
}

.legal-section ul,
.legal-section ol {
  padding-left: 1.25rem;
}

.legal-section li {
  margin-bottom: 0.4rem;
  text-wrap: pretty;
}

.legal-section p:last-child,
.legal-section ul:last-child {
  margin-bottom: 0;
}

.legal-section code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-accent);
}

.notice-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  padding: 1.15rem 1.25rem;
  margin: 1.25rem 0;
}

.notice-box p {
  margin-bottom: 0.35rem;
  font-size: 0.875rem;
}

.notice-box p:last-child {
  margin-bottom: 0;
}

.link-inline {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.link-inline:hover {
  color: var(--accent-primary);
}

/* Support & Donation Cards (Ko-fi & PayPal) */
.donation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.donation-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: border-color var(--duration-fast) var(--ease-out-expo), background-color var(--duration-fast) var(--ease-out-expo), transform var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo);
}

.donation-card:hover {
  border-color: var(--border-medium);
  background-color: var(--bg-surface-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px -6px rgba(0, 0, 0, 0.4);
}

.donation-card-content {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.donation-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.kofi-icon-bg {
  background: rgba(255, 94, 91, 0.15);
  color: #ff5e5b;
  border: 1px solid rgba(255, 94, 91, 0.3);
}

.paypal-icon-bg {
  background: rgba(0, 112, 186, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(0, 112, 186, 0.3);
}

.donation-icon {
  width: 22px;
  height: 22px;
}

.donation-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.donation-platform {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.donation-handle {
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--accent-primary);
  margin-bottom: 0.25rem;
}

.donation-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0 !important;
}

.btn-donation {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.65rem 1rem;
  min-height: 40px;
  background: var(--bg-surface-active);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all var(--duration-fast) var(--ease-out-expo);
}

.btn-donation svg {
  width: 15px;
  height: 15px;
  transition: transform var(--duration-fast) var(--ease-spring);
}

.donation-card:hover .btn-donation {
  background: var(--accent-primary);
  color: var(--accent-primary-text);
  border-color: var(--accent-primary);
}

.donation-card:hover .btn-donation svg {
  transform: translate(2px, -2px);
}

/* Crypto Donation Hub (2-Stage Interactive Hub) */
.crypto-hub-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 1.5rem;
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  animation: fadeInUp 0.4s var(--ease-out-expo) backwards;
}

.hub-header {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.hub-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hub-title svg {
  width: 18px;
  height: 18px;
  color: var(--accent-primary);
}

.hub-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 52ch;
  margin-bottom: 0 !important;
  text-wrap: pretty;
}

.crypto-stage {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.crypto-stage-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.coin-pills-row,
.network-pills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  min-height: 38px;
  border-radius: 8px;
  border: 1px solid var(--border-medium);
  background: var(--bg-surface-active);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-expo);
  user-select: none;
}

.pill-btn:hover {
  border-color: var(--border-focus);
  background: var(--bg-surface-hover);
  transform: translateY(-1px);
}

.pill-btn:active {
  transform: scale(0.97);
}

.pill-btn.active {
  border-color: var(--accent-primary);
  background: rgba(245, 158, 11, 0.12);
  color: var(--text-primary);
  box-shadow: 0 0 0 1px var(--accent-primary);
}

.pill-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.network-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.8rem;
  min-height: 36px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-base);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-expo);
  user-select: none;
}

.network-pill:hover {
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.network-pill:active {
  transform: scale(0.97);
}

.network-pill.active {
  border-color: var(--accent-primary);
  color: var(--text-primary);
  background: var(--bg-surface-active);
  box-shadow: 0 0 0 1px var(--accent-primary);
}

.fee-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  letter-spacing: 0.01em;
}

.fee-badge-lowest {
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.fee-badge-low {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.fee-badge-mid {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.fee-badge-high {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.crypto-card-body {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.qr-box {
  width: 120px;
  height: 120px;
  background: #ffffff;
  padding: 6px;
  border-radius: 8px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.qr-box svg {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.address-details {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.addr-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.addr-network-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.addr-text-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  word-break: break-all;
  user-select: all;
  line-height: 1.5;
}

.addr-prefix,
.addr-suffix {
  color: var(--accent-primary);
  font-weight: 700;
}

.addr-middle {
  color: var(--text-muted);
}

.btn-copy-address {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  background: var(--accent-primary);
  color: var(--accent-primary-text);
  border: none;
  border-radius: 6px;
  padding: 0.55rem 1.15rem;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-expo);
  align-self: flex-start;
}

.btn-copy-address:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-copy-address:active {
  transform: scale(0.97);
}

.btn-copy-address svg {
  width: 14px;
  height: 14px;
}

.crypto-safety-alert {
  background: transparent;
  border: none;
  padding: 0;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.5;
}

.crypto-safety-alert p {
  margin: 0 !important;
  max-width: 52ch;
  text-wrap: pretty;
}

.crypto-safety-alert svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--accent-primary);
}

@media (max-width: 640px) {
  .crypto-card-body {
    flex-direction: column;
    align-items: stretch;
  }
  .qr-box {
    margin: 0 auto;
  }
  .btn-copy-address {
    width: 100%;
  }
}

/* 404 / Expired Link Page */
.notfound-section {
  max-width: 680px;
  margin: 3.5rem auto 4.5rem;
  width: 100%;
  animation: fadeInUp 0.4s var(--ease-out-expo) backwards;
}

.notfound-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.notfound-icon-wrapper {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--bg-surface-active);
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.notfound-icon {
  width: 32px;
  height: 32px;
}

.notfound-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.notfound-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 58ch;
  margin-bottom: 1.25rem;
  text-wrap: pretty;
}

.notfound-subtext {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 58ch;
  margin-bottom: 2rem;
  text-wrap: pretty;
}

.notfound-actions {
  display: flex;
  justify-content: center;
}

.notfound-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  text-decoration: none;
  min-height: 44px;
}

.notfound-btn svg {
  width: 18px;
  height: 18px;
}

.hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  .search-form {
    flex-direction: column;
  }
  .folder-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .files-header {
    display: none;
  }
  .file-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    padding: 1rem;
  }
  .file-actions-cell {
    justify-content: flex-start;
  }
  .btn-file-action {
    min-height: 44px; /* Touch target 44px on mobile */
    padding: 0.5rem 0.85rem;
  }
  .legal-title {
    font-size: 1.75rem;
  }
  .crypto-grid {
    grid-template-columns: 1fr;
  }
  .crypto-address-row {
    flex-direction: column;
    align-items: stretch;
  }
  .crypto-address {
    min-height: 44px;
  }
  .btn-copy-addr {
    min-height: 44px;
    justify-content: center;
  }
  .toast {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
  }
}

/* Graceful Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
  .file-row, .results-section, .modal-backdrop, .modal-window, .toast, .search-form, .btn-primary, .btn-action, .btn-file-action, .app-header, .hero-title, .hero-subtitle, .legal-article, .notfound-section {
    transition: opacity 0.15s ease, background-color 0.15s ease !important;
    transform: none !important;
  }
  .sound-wave .bar {
    animation: none !important;
    height: 16px !important;
  }
}