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

:root {
  /* Base colors */
  --color-bg: #f7f9fb;
  --color-surface: #ffffff;
  --color-text: #2a2a2a;
  --color-text-secondary: #6a6a6a;
  --color-border: #dce1e6;

  /* Primary - Navy Blue */
  --color-primary: #2d4356;
  --color-primary-dark: #1e2d3d;
  --color-primary-light: #e8edf2;

  /* Accent - Soft Teal */
  --color-accent: #5b8fa3;
  --color-accent-light: #edf5f7;

  /* Neutral - Warm Gray */
  --color-tag: #eff0f2;
  --color-tag-active: #2d4356;

  /* Status colors */
  --color-safe: #2d7856;
  --color-safe-light: #e8f5ee;
  --color-caution: #b8860b;
  --color-caution-light: #fef9e7;
  --color-restricted: #b83a4a;
  --color-restricted-light: #fceef0;

  /* Layout */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(45, 67, 86, 0.08);
  --shadow-md: 0 2px 8px rgba(45, 67, 86, 0.12);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: var(--color-primary);
  color: #fff;
  padding: 1.5rem 1rem;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-branding {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-logo {
  height: 48px;
  width: auto;
  flex-shrink: 0;
  background: white;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
}

header h1 {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

header .subtitle {
  font-size: 0.85rem;
  opacity: 0.85;
  margin-top: 0.15rem;
}

main {
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
  flex: 1;
}

/* Search bar */
.search-bar {
  position: relative;
  margin-bottom: 1rem;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
  width: 18px;
  height: 18px;
  pointer-events: none;
}

#search-input {
  width: 100%;
  padding: 0.75rem 2.5rem 0.75rem 2.75rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}

#search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* Hide native search input clear button */
#search-input::-webkit-search-cancel-button {
  display: none;
}

.clear-btn {
  position: absolute;
  right: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 0.4rem;
  line-height: 1;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.clear-btn:hover {
  background: var(--color-tag);
}

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

/* Filters */
.filters {
  margin-bottom: 1rem;
}

.filter-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.filter-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.filter-group select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.filter-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.filter-group select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Active filters */
.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding-top: 0.25rem;
}

.active-filter {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 100px;
  font-weight: 500;
}

.active-filter button {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  padding: 0;
  opacity: 0.7;
}

.active-filter button:hover {
  opacity: 1;
}

/* Results info */
.results-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.reset-btn {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  padding: 0.25rem 0;
}

.reset-btn:hover {
  text-decoration: underline;
}

/* Results info actions */
.results-info-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

.view-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 28px;
  background: var(--color-surface);
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

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

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

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

/* Result cards */
.results {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.results.view-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
}

.result-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
  transition: box-shadow 0.15s, border-color 0.15s, transform 0.15s;
}

.result-card:hover {
  box-shadow: var(--shadow-md);
  border-color: #c5c5c8;
}


.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.card-filename {
  font-weight: 600;
  font-size: 0.95rem;
  word-break: break-word;
}


.card-folder {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.card-summary-container {
  margin-bottom: 0.6rem;
}

.card-summary {
  font-size: 0.85rem;
  color: var(--color-text);
  line-height: 1.55;
  margin-bottom: 0.3rem;
}

.card-summary.collapsed {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.summary-toggle {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  margin-top: 0.3rem;
  text-decoration: underline;
}

.summary-toggle:hover {
  color: var(--color-primary-dark);
}

.card-meta-primary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.6rem;
}

.card-meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.6rem;
  max-height: 200px;
  overflow: visible;
  transition: max-height 0.2s ease, opacity 0.2s ease;
}

.card-meta-tags.collapsed {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-bottom: 0;
}

.card-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.btn-open,
.btn-share {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: white;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}

.btn-open svg,
.btn-share svg {
  width: 16px;
  height: 16px;
}

.btn-open:hover,
.btn-share:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.btn-open {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn-open:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: white;
}

.meta-badge {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  font-size: 0.72rem;
  font-weight: 500;
  border-radius: 100px;
  background: var(--color-tag);
  color: var(--color-text-secondary);
  border: 1px solid transparent;
}

.meta-badge.category {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: rgba(45, 67, 86, 0.15);
}

.meta-badge.subcategory {
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-color: rgba(91, 143, 163, 0.15);
}

.meta-badge.tag-match {
  background: #fff9e6;
  color: #8b6914;
  border-color: #e6d89f;
  font-weight: 600;
}

.meta-badge.sharing-safe {
  background: var(--color-safe-light);
  color: var(--color-safe);
}

.meta-badge.sharing-caution {
  background: var(--color-caution-light);
  color: var(--color-caution);
}

.meta-badge.sharing-restricted {
  background: var(--color-restricted-light);
  color: var(--color-restricted);
}



/* Load more */
.load-more {
  text-align: center;
  padding: 1.25rem 0;
}

.load-more-btn {
  padding: 0.6rem 2rem;
  font-size: 0.875rem;
  font-family: inherit;
  font-weight: 500;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  cursor: pointer;
  transition: all 0.15s;
}

.load-more-btn:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  background: var(--color-text);
  color: #fff;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
  z-index: 100;
}

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

/* Loading state */
.loading {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-secondary);
}

.spinner {
  display: inline-block;
  width: 28px;
  height: 28px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-bottom: 0.75rem;
}

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

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-secondary);
}

.empty-state p {
  font-size: 0.95rem;
}

/* Login screen */
.login-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 2.5rem 2rem;
  text-align: center;
}

.login-card h2 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.login-subtitle {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.login-card form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.login-card input[type="email"],
.login-card input[type="password"] {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: inherit;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  outline: none;
  transition: border-color 0.15s;
}

.login-card input[type="email"]:focus,
.login-card input[type="password"]:focus {
  border-color: var(--color-primary);
}

.login-card button[type="submit"] {
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: inherit;
  font-weight: 600;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: opacity 0.15s;
  margin-top: 0.25rem;
}

.login-card button[type="submit"]:hover {
  opacity: 0.9;
}

.login-error {
  font-size: 0.82rem;
  color: #d63031;
  margin: 0;
}

/* Logout button */
.logout-btn {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
  flex-shrink: 0;
}

.logout-btn:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
}

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

/* Responsive */
@media (max-width: 600px) {
  header {
    padding: 1.1rem 0.75rem;
  }

  .header-branding {
    gap: 0.75rem;
  }

  .header-logo {
    height: 40px;
  }

  header h1 {
    font-size: 1.2rem;
  }

  main {
    padding: 1rem 0.75rem 2.5rem;
  }

  .filter-row {
    grid-template-columns: 1fr 1fr;
  }

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

  .card-extension {
    align-self: flex-start;
  }

  .login-card {
    margin: 0 1rem;
    padding: 2rem 1.25rem;
  }
}

@media (max-width: 400px) {
  .filter-row {
    grid-template-columns: 1fr;
  }
}