/* ==============================================================
   DOWNLOAD CENTER — STYLESHEET
   Organized, variable-driven, mobile-first CSS.
   Sections:
     1. Reset & Base
     2. Design Tokens (CSS Variables)
     3. Layout Helpers
     4. Header
     5. Breadcrumb
     6. Toolbar (search / filter / sort / view)
     7. Results meta
     8. Item list (grid + list views)
     9. Empty state
     10. Footer
     11. Utilities
     12. Responsive
   ============================================================== */

/* ---------------------------------------------------------------
   1. Reset & Base
   --------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select {
  font: inherit;
  color: inherit;
}

ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, p {
  margin: 0;
}

/* ---------------------------------------------------------------
   2. Design Tokens
   --------------------------------------------------------------- */
:root {
  /* Soft dark theme palette */
  --color-bg: #0f1115;
  --color-bg-elevated: #15181f;
  --color-surface: #1a1e26;
  --color-surface-hover: #1f2430;
  --color-border: #262b35;
  --color-border-soft: #1e222b;

  --color-text: #e6e8ec;
  --color-text-muted: #9aa2b1;
  --color-text-faint: #6b7280;

  --color-accent: #5b8def;
  --color-accent-hover: #4a7ce0;
  --color-accent-soft: rgba(91, 141, 239, 0.12);

  --color-danger: #ef5b5b;

  /* Glassmorphism */
  --glass-bg: rgba(21, 24, 31, 0.72);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: 14px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.28);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.32);

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Layout */
  --container-max: 1160px;
  --header-height: 72px;

  /* Motion */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
}

/* ---------------------------------------------------------------
   3. Layout Helpers
   --------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 1000;
}

.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}

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

/* ---------------------------------------------------------------
   4. Header
   --------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.brand-subtitle {
  font-size: 0.78rem;
  color: var(--color-text-faint);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* ---------------------------------------------------------------
   5. Breadcrumb
   --------------------------------------------------------------- */
.main-content {
  padding-block: var(--space-6) var(--space-8);
}

.back-button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  padding: 7px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.back-button:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.breadcrumb {
  margin-bottom: var(--space-5);
  overflow-x: auto;
}

.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: nowrap;
  white-space: nowrap;
}

.breadcrumb-item a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.breadcrumb-item a:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.breadcrumb-item:not(:last-child)::after {
  content: '/';
  margin-left: var(--space-2);
  color: var(--color-text-faint);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
}

/* ---------------------------------------------------------------
   6. Toolbar
   --------------------------------------------------------------- */
.toolbar {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.search-field {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  color: var(--color-text-faint);
  font-size: 0.9rem;
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 12px var(--space-4) 12px 40px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

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

.search-input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
}

.toolbar-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.select-field {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.select-input {
  appearance: none;
  -webkit-appearance: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 10px 36px 10px var(--space-3);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.select-input:hover {
  border-color: var(--color-text-faint);
}

.select-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.select-caret {
  position: absolute;
  right: var(--space-3);
  font-size: 0.7rem;
  color: var(--color-text-faint);
  pointer-events: none;
}

.view-toggle {
  display: inline-flex;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 3px;
  margin-left: auto;
}

.view-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 30px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-faint);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

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

.view-btn.is-active {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

/* ---------------------------------------------------------------
   7. Results meta
   --------------------------------------------------------------- */
.results-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border-soft);
}

/* ---------------------------------------------------------------
   8. Item list (grid + list views)
   --------------------------------------------------------------- */
.item-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

.item-list[data-view="list"] {
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

/* Grid view: stack each card vertically instead of cramming icon +
   name + meta + action button into one horizontal row — that's what
   made the grid look broken/cluttered in narrow columns. Achieved
   purely with flex-wrap + order, so item-card.php needs no changes. */
.item-list[data-view="grid"] .item-card {
  flex-wrap: wrap;
  align-items: flex-start;
  row-gap: var(--space-3);
}

.item-list[data-view="grid"] .item-select {
  order: 1;
}

.item-list[data-view="grid"] .item-icon {
  order: 2;
  width: 40px;
  height: 40px;
  font-size: 1rem;
}

.item-list[data-view="grid"] .item-info {
  order: 3;
  flex: 1 1 100%;
  min-width: 100%;
}

.item-list[data-view="grid"] .item-name {
  white-space: normal;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.35;
}

.item-list[data-view="grid"] .item-actions {
  order: 4;
  flex: 1 1 100%;
  min-width: 100%;
}

.item-list[data-view="grid"] .btn-download {
  flex: 1;
  justify-content: center;
}

.item-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.item-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.item-list[data-view="list"] .item-card {
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}

.item-list[data-view="list"] .item-card:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
}

.item-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-bg-elevated);
  color: var(--color-accent);
  font-size: 1.1rem;
}

.item-info {
  flex: 1;
  min-width: 0;
}

.item-name {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-1);
  font-size: 0.78rem;
  color: var(--color-text-faint);
}

.item-dot {
  opacity: 0.6;
}

.item-actions {
  flex-shrink: 0;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border: 1px solid transparent;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.btn-download:hover {
  background: var(--color-accent);
  color: #fff;
}

.btn-download i {
  font-size: 0.78rem;
}

.item-list[data-view="list"] .btn-download span {
  display: none;
}

@media (min-width: 480px) {
  .item-list[data-view="list"] .btn-download span {
    display: inline;
  }
}

/* ---------------------------------------------------------------
   9. Empty state
   --------------------------------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-8) var(--space-5);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-elevated);
  color: var(--color-text-muted);
}

.empty-state-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  color: var(--color-text-faint);
  font-size: 1.4rem;
  margin-bottom: var(--space-4);
}

.empty-state-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.empty-state-text {
  font-size: 0.875rem;
  color: var(--color-text-faint);
  max-width: 380px;
}

/* ---------------------------------------------------------------
   10. Footer
   --------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border-soft);
  padding-block: var(--space-5);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.footer-text {
  font-size: 0.8rem;
  color: var(--color-text-faint);
}

.footer-links {
  display: flex;
  gap: var(--space-4);
  font-size: 0.8rem;
}

.footer-links a {
  color: var(--color-text-faint);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-text);
}

/* ---------------------------------------------------------------
   11. Utilities
   --------------------------------------------------------------- */
.hidden {
  display: none !important;
}

/* ---------------------------------------------------------------
   12. Responsive
   --------------------------------------------------------------- */
@media (min-width: 640px) {
  .toolbar {
    flex-direction: row;
    align-items: center;
  }

  .search-field {
    max-width: 320px;
  }

  .toolbar-controls {
    flex: 1;
  }
}

@media (min-width: 960px) {
  .container {
    padding-inline: var(--space-6);
  }
}

/* ---------------------------------------------------------------
   13. Custom additions — New badge, copy-link, batch download,
   toast notification. Added on top of the original design without
   changing any existing rule above; same tokens/colors reused.
   --------------------------------------------------------------- */
.item-badge-new {
  display: inline-block;
  vertical-align: middle;
  margin-inline-start: var(--space-2);
  padding: 1px 8px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border-radius: var(--radius-full);
}

.item-badge-locked {
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  margin-inline-start: var(--space-2);
  color: var(--color-text-faint);
  font-size: 0.78rem;
}

.password-gate {
  max-width: 380px;
  margin: var(--space-7) auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
}

.password-gate-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 1.2rem;
}

.password-gate h2 {
  font-size: 1rem;
  margin: 0 0 var(--space-2);
}

.password-gate p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin: 0 0 var(--space-5);
}

.password-gate form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.password-gate input[type="password"] {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--color-text);
  font: inherit;
  text-align: center;
}

.password-gate input[type="password"]:focus {
  outline: none;
  border-color: var(--color-accent);
}

.password-gate-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.password-gate-submit:hover {
  background: var(--color-accent-hover);
}

.password-gate-error {
  background: rgba(239, 91, 91, 0.1);
  border: 1px solid var(--color-danger);
  color: var(--color-danger);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  font-size: 0.82rem;
}

.btn-copy-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

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

.item-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.item-select {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  cursor: pointer;
}

.item-select-checkbox {
  width: 17px;
  height: 17px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.select-all-field {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.82rem;
  color: var(--color-text-muted);
  cursor: pointer;
  user-select: none;
}

.select-all-field input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.category-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.btn-batch-download {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
}

.btn-batch-download:hover:not(:disabled) {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-batch-download:disabled,
.btn-batch-download.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.app-toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(12px);
  background: var(--color-bg-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
  z-index: 100;
}

.app-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}