/* ZeroMark — Zero-knowledge bookmark manager */

:root {
  --bg: #0f1117;
  --bg-surface: #181a22;
  --bg-raised: #1f2230;
  --bg-input: #161821;
  --border: #2a2d3a;
  --border-focus: #5b8af0;
  --text: #e4e6ef;
  --text-muted: #7a7f94;
  --text-dim: #4e5268;
  --accent: #5b8af0;
  --accent-hover: #7aa2ff;
  --accent-subtle: rgba(91, 138, 240, 0.12);
  --danger: #e05252;
  --danger-hover: #f06b6b;
  --success: #4ec89f;
  --radius: 10px;
  --radius-sm: 6px;
  --mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  min-height: 100dvh;
}

/* --- Layout --- */

.app-shell {
  display: flex;
  min-height: 100dvh;
}

.sidebar {
  width: 260px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform 0.2s ease;
}

.sidebar-header {
  padding: 20px 18px 12px;
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.logo svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent);
}

.logo-badge {
  font-size: 0.6rem;
  background: var(--accent-subtle);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.nav-section-label {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  padding: 16px 18px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: all 0.15s;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}

.nav-item:hover {
  background: var(--accent-subtle);
  color: var(--text);
}

.nav-item.active {
  background: var(--accent-subtle);
  color: var(--accent);
}

.nav-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.nav-item .count {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--mono);
}

.sidebar-footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-info {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.main-content {
  flex: 1;
  margin-left: 260px;
  padding: 24px 32px;
  max-width: 900px;
}

/* --- Auth screens --- */

.auth-wrapper {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(91, 138, 240, 0.06) 0%, transparent 60%),
    var(--bg);
}

.auth-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
}

.auth-card .logo {
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.auth-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 28px;
}

/* --- Forms --- */

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--mono);
  transition: border-color 0.15s;
  outline: none;
}

.form-input:focus {
  border-color: var(--border-focus);
}

.form-input::placeholder {
  color: var(--text-dim);
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 4px;
}

/* --- Buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
  line-height: 1;
}

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

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}
.btn-ghost:hover {
  background: var(--bg-raised);
  color: var(--text);
}

.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}
.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.btn-icon {
  padding: 6px;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}
.btn-icon:hover {
  background: var(--bg-raised);
  color: var(--text);
}

.btn-block {
  width: 100%;
}

/* --- Header bar --- */

.content-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 16px;
}

.content-title {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 320px;
}

.search-box svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-dim);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.88rem;
  font-family: inherit;
  outline: none;
}

.search-box input:focus {
  border-color: var(--border-focus);
}

/* --- Bookmark cards --- */

.bookmarks-grid {
  display: grid;
  gap: 10px;
}

.bookmark-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: border-color 0.15s;
}

.bookmark-card:hover {
  border-color: var(--accent);
}

.bookmark-favicon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--bg-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  overflow: hidden;
}

.bookmark-favicon img {
  width: 20px;
  height: 20px;
}

.bookmark-body {
  flex: 1;
  min-width: 0;
}

.bookmark-name {
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 2px;
  display: block;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bookmark-name:hover {
  color: var(--accent);
}

.bookmark-url {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--mono);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bookmark-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.bookmark-actions {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.15s;
}

.bookmark-card:hover .bookmark-actions {
  opacity: 1;
}

/* --- Modal / Dialog --- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
}

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  width: 100%;
  max-width: 440px;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

/* --- Empty state --- */

.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-dim);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 0.9rem;
  margin-bottom: 16px;
}

/* --- Auth link --- */

.auth-switch {
  text-align: center;
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.auth-switch a {
  color: var(--accent);
  text-decoration: none;
  cursor: pointer;
}

.auth-switch a:hover {
  text-decoration: underline;
}

/* --- Loading --- */

.loading-spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* --- Error message --- */

.error-msg {
  background: rgba(224, 82, 82, 0.1);
  border: 1px solid rgba(224, 82, 82, 0.3);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.success-msg {
  background: rgba(78, 200, 159, 0.1);
  border: 1px solid rgba(78, 200, 159, 0.3);
  color: var(--success);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

/* --- ZK badge --- */

.zk-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-family: var(--mono);
  color: var(--success);
  padding: 10px 18px;
}

.zk-dot {
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* --- Mobile --- */

.mobile-toggle {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
}

@media (max-width: 700px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
    padding: 20px 16px;
    padding-top: 52px;
  }
  .mobile-toggle {
    display: flex;
  }
  .bookmark-actions {
    opacity: 1;
  }
}

/* --- Scrollbar --- */

::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}