/* ==========================================================================
   PubKeySync - Modern Design System & Theme Variables
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root,
[data-bs-theme="light"] {
  --app-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --app-font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Color Palette - Vibrant Indigo / Slate */
  --app-primary: #4f46e5;
  --app-primary-hover: #4338ca;
  --app-primary-subtle: #eef2ff;
  --app-primary-border: #c7d2fe;
  
  --app-surface: #ffffff;
  --app-surface-subtle: #f8fafc;
  --app-surface-border: #e2e8f0;
  --app-text-muted: #64748b;
  --app-text-main: #0f172a;
  
  --app-card-bg: #ffffff;
  --app-card-border: rgba(226, 232, 240, 0.8);
  --app-card-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
  --app-card-hover-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  
  --app-nav-bg: rgba(255, 255, 255, 0.85);
  --app-nav-border: rgba(226, 232, 240, 0.8);
  --app-nav-link: #475569;
  --app-nav-link-hover: #0f172a;
  --app-nav-link-active: #4f46e5;

  --app-code-bg: #f1f5f9;
  --app-code-border: #e2e8f0;
  --app-code-text: #0f172a;

  --app-table-header-bg: #f8fafc;
  --app-table-hover-bg: #f8fafc;
  --app-table-border: #e2e8f0;

  --app-hero-gradient: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 75%);
  --app-badge-authorized-bg: #dcfce7;
  --app-badge-authorized-text: #15803d;
  --app-badge-waiting-bg: #fef3c7;
  --app-badge-waiting-text: #b45309;
  --app-badge-disabled-bg: #f1f5f9;
  --app-badge-disabled-text: #64748b;
}

[data-bs-theme="dark"] {
  --app-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --app-font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Dark Palette - Deep Space & Electric Indigo */
  --app-primary: #6366f1;
  --app-primary-hover: #818cf8;
  --app-primary-subtle: rgba(99, 102, 241, 0.15);
  --app-primary-border: rgba(99, 102, 241, 0.35);

  --app-surface: #0f172a;
  --app-surface-subtle: #1e293b;
  --app-surface-border: #334155;
  --app-text-muted: #94a3b8;
  --app-text-main: #f8fafc;

  --app-card-bg: #1e293b;
  --app-card-border: rgba(51, 65, 85, 0.8);
  --app-card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --app-card-hover-shadow: 0 12px 20px -4px rgba(0, 0, 0, 0.45);

  --app-nav-bg: rgba(15, 23, 42, 0.85);
  --app-nav-border: rgba(51, 65, 85, 0.8);
  --app-nav-link: #cbd5e1;
  --app-nav-link-hover: #ffffff;
  --app-nav-link-active: #818cf8;

  --app-code-bg: #0f172a;
  --app-code-border: #334155;
  --app-code-text: #38bdf8;

  --app-table-header-bg: #1e293b;
  --app-table-hover-bg: rgba(51, 65, 85, 0.4);
  --app-table-border: #334155;

  --app-hero-gradient: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.15) 0%, transparent 75%);
  --app-badge-authorized-bg: rgba(34, 197, 94, 0.18);
  --app-badge-authorized-text: #4ade80;
  --app-badge-waiting-bg: rgba(245, 158, 11, 0.18);
  --app-badge-waiting-text: #fcd34d;
  --app-badge-disabled-bg: rgba(148, 163, 184, 0.15);
  --app-badge-disabled-text: #94a3b8;
}

/* ==========================================================================
   Base Elements & Typography
   ========================================================================== */

html {
  font-family: var(--app-font-sans);
  font-size: 15px;
  position: relative;
  min-height: 100%;
  scroll-behavior: smooth;
}

@media (min-width: 768px) {
  html {
    font-size: 15.5px;
  }
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  font-family: var(--app-font-sans);
  color: var(--bs-body-color);
  background-color: var(--bs-body-bg);
  background-image: var(--app-hero-gradient);
  background-repeat: no-repeat;
  transition: background-color 0.25s ease, color 0.25s ease;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

code, pre, .font-monospace {
  font-family: var(--app-font-mono) !important;
}

/* ==========================================================================
   Navigation Bar (Glassmorphic & Polished)
   ========================================================================== */

.app-navbar {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background-color: var(--app-nav-bg) !important;
  border-bottom: 1px solid var(--app-nav-border) !important;
  position: sticky;
  top: 0;
  z-index: 1030;
  transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.navbar-brand {
  font-weight: 700;
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--bs-body-color) !important;
  transition: opacity 0.15s ease;
}

.navbar-brand:hover {
  opacity: 0.85;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1rem;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.35);
}

.app-navbar .nav-link {
  font-weight: 500;
  font-size: 0.93rem;
  color: var(--app-nav-link) !important;
  padding: 0.5rem 0.85rem !important;
  border-radius: 0.5rem;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.app-navbar .nav-link:hover {
  color: var(--app-nav-link-hover) !important;
  background-color: var(--app-primary-subtle);
}

.app-navbar .nav-link.active {
  color: var(--app-primary) !important;
  font-weight: 600;
  background-color: var(--app-primary-subtle);
}

/* ==========================================================================
   Theme Switcher Dropdown
   ========================================================================== */

.theme-toggle-btn {
  border-radius: 0.5rem;
  padding: 0.45rem 0.65rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--app-nav-link);
  border: 1px solid var(--app-nav-border);
  background: transparent;
  transition: all 0.15s ease;
}

.theme-toggle-btn:hover,
.theme-toggle-btn:focus {
  color: var(--app-nav-link-hover);
  border-color: var(--app-primary);
  background: var(--app-primary-subtle);
}

.theme-menu {
  border-radius: 0.75rem;
  border: 1px solid var(--app-card-border);
  background-color: var(--app-card-bg);
  box-shadow: var(--app-card-hover-shadow);
  padding: 0.4rem;
  min-width: 155px;
}

.theme-menu .dropdown-item {
  border-radius: 0.5rem;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.45rem 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--bs-body-color);
  transition: all 0.15s ease;
}

.theme-menu .dropdown-item:hover {
  background-color: var(--app-primary-subtle);
  color: var(--app-primary);
}

.theme-menu .dropdown-item.active {
  background-color: var(--app-primary);
  color: #ffffff;
}

/* ==========================================================================
   Modern Cards
   ========================================================================== */

.app-card {
  background-color: var(--app-card-bg);
  border: 1px solid var(--app-card-border);
  border-radius: 0.85rem;
  box-shadow: var(--app-card-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  overflow: hidden;
}

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

.app-card-header {
  padding: 1.1rem 1.35rem;
  border-bottom: 1px solid var(--app-card-border);
  background-color: transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.app-card-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.app-card-body {
  padding: 1.35rem;
}

/* ==========================================================================
   Modern Tables
   ========================================================================== */

.app-table-wrapper {
  border: 1px solid var(--app-table-border);
  border-radius: 0.75rem;
  overflow: hidden;
  background-color: var(--app-card-bg);
}

.table.app-table {
  margin-bottom: 0;
  vertical-align: middle;
}

.table.app-table thead th {
  background-color: var(--app-table-header-bg);
  color: var(--app-text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--app-table-border);
}

.table.app-table tbody td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--app-table-border);
  font-size: 0.92rem;
  color: var(--bs-body-color);
}

.table.app-table tbody tr:last-child td {
  border-bottom: none;
}

.table.app-table tbody tr:hover td {
  background-color: var(--app-table-hover-bg);
}

/* Code Snippets & Monospace Previews */
.key-preview {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--app-code-bg);
  border: 1px solid var(--app-code-border);
  color: var(--app-code-text);
  padding: 0.2rem 0.55rem;
  border-radius: 0.4rem;
  font-size: 0.84rem;
  font-family: var(--app-font-mono);
  max-width: 100%;
  word-break: break-all;
}

.btn-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.2rem 0.45rem;
  font-size: 0.8rem;
  border-radius: 0.35rem;
  color: var(--app-text-muted);
  border: 1px solid transparent;
  background: transparent;
  transition: all 0.15s ease;
  cursor: pointer;
}

.btn-copy:hover {
  color: var(--app-primary);
  background-color: var(--app-primary-subtle);
  border-color: var(--app-primary-border);
}

/* ==========================================================================
   Badges & Status Indicators
   ========================================================================== */

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  line-height: 1;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}

.status-authorized {
  background-color: var(--app-badge-authorized-bg);
  color: var(--app-badge-authorized-text);
}
.status-authorized .status-dot {
  background-color: currentColor;
  box-shadow: 0 0 6px currentColor;
}

.status-waiting {
  background-color: var(--app-badge-waiting-bg);
  color: var(--app-badge-waiting-text);
}
.status-waiting .status-dot {
  background-color: currentColor;
}

.status-disabled {
  background-color: var(--app-badge-disabled-bg);
  color: var(--app-badge-disabled-text);
}
.status-disabled .status-dot {
  background-color: currentColor;
}

/* ==========================================================================
   Buttons & Form Controls
   ========================================================================== */

.btn {
  font-weight: 500;
  border-radius: 0.55rem;
  padding: 0.5rem 1rem;
  font-size: 0.92rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: all 0.15s ease-in-out;
}

.btn-primary {
  background-color: var(--app-primary);
  border-color: var(--app-primary);
  color: #ffffff;
  box-shadow: 0 1px 2px rgba(79, 70, 229, 0.2);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--app-primary-hover) !important;
  border-color: var(--app-primary-hover) !important;
  color: #ffffff !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.btn-outline-primary {
  border-color: var(--app-primary);
  color: var(--app-primary);
}

.btn-outline-primary:hover {
  background-color: var(--app-primary);
  border-color: var(--app-primary);
  color: #ffffff;
}

.btn-sm {
  padding: 0.3rem 0.65rem;
  font-size: 0.84rem;
  border-radius: 0.45rem;
}

.form-control,
.form-select {
  border-radius: 0.55rem;
  padding: 0.55rem 0.85rem;
  font-size: 0.92rem;
  border-color: var(--app-surface-border);
  background-color: var(--app-surface);
  color: var(--bs-body-color);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--app-primary);
  box-shadow: 0 0 0 3px var(--app-primary-subtle);
  background-color: var(--app-surface);
  color: var(--bs-body-color);
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--bs-body-color);
}

.form-check-input:checked {
  background-color: var(--app-primary);
  border-color: var(--app-primary);
}

/* ==========================================================================
   Page Headers & Empty States
   ========================================================================== */

.page-header {
  margin-bottom: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.page-header-title {
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.page-header-subtitle {
  color: var(--app-text-muted);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
}

.empty-state-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--app-primary-subtle);
  color: var(--app-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.65rem;
  margin-bottom: 1rem;
}

/* ==========================================================================
   Hero & Feature Cards (Home Page)
   ========================================================================== */

.hero-banner {
  text-align: center;
  padding: 3rem 1rem 2.5rem;
  max-width: 820px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 600;
  background-color: var(--app-primary-subtle);
  color: var(--app-primary);
  border: 1px solid var(--app-primary-border);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3rem;
  }
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--app-text-muted);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.quick-action-card {
  height: 100%;
  border-radius: 0.85rem;
  padding: 1.5rem;
  background-color: var(--app-card-bg);
  border: 1px solid var(--app-card-border);
  box-shadow: var(--app-card-shadow);
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
  text-decoration: none;
  color: inherit;
}

.quick-action-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--app-card-hover-shadow);
  border-color: var(--app-primary-border);
  color: inherit;
}

.quick-action-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.app-footer {
  margin-top: auto;
  border-top: 1px solid var(--app-nav-border);
  background-color: var(--app-nav-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 1.25rem 0;
  font-size: 0.88rem;
  color: var(--app-text-muted);
}

.app-footer a {
  color: var(--app-text-muted);
  text-decoration: none;
}

.app-footer a:hover {
  color: var(--app-primary);
}

/* ==========================================================================
   Toast Notification (For Copy Feedback)
   ========================================================================== */

.copy-toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1090;
  background: var(--app-surface);
  color: var(--app-text-main);
  border: 1px solid var(--app-card-border);
  box-shadow: var(--app-card-hover-shadow);
  border-radius: 0.65rem;
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.copy-toast.show {
  opacity: 1;
  transform: translateY(0);
}