/* ============================================
   EVERNOTE THEME - AdForge AI
   Two-Panel Layout with Evernote Design System
   ============================================ */

/* ============================================
   EVERNOTE COLOR SYSTEM & VARIABLES
   ============================================ */
:root {
  /* Evernote Brand Colors */
  --evernote-green: #00A82D;
  --evernote-green-hover: #008A24;
  --evernote-green-light: #00B833;
  --evernote-green-dark: #007A1F;

  /* Supporting Colors */
  --evernote-gray-50: #FAFAFA;
  --evernote-gray-100: #F5F5F5;
  --evernote-gray-200: #EEEEEE;
  --evernote-gray-300: #E0E0E0;
  --evernote-gray-400: #BDBDBD;
  --evernote-gray-500: #9E9E9E;
  --evernote-gray-600: #757575;
  --evernote-gray-700: #616161;
  --evernote-gray-800: #424242;
  --evernote-gray-900: #212121;

  /* Accent Colors */
  --evernote-blue: #4285F4;
  --evernote-blue-hover: #3367D6;
  --evernote-orange: #FF6F00;
  --evernote-red: #D32F2F;
  --evernote-yellow: #FFC107;

  /* Light Theme Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-tertiary: #F1F3F4;
  --bg-sidebar: #F5F5F5;
  --bg-hover: #F0F0F0;
  --bg-active: #E8F0FE;

  --text-primary: #202124;
  --text-secondary: #5F6368;
  --text-tertiary: #80868B;
  --text-accent: var(--evernote-green);

  --border-light: #E8EAED;
  --border-medium: #DADCE0;
  --border-dark: #BDC1C6;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(60, 64, 67, 0.1);
  --shadow-md: 0 2px 4px rgba(60, 64, 67, 0.15);
  --shadow-lg: 0 4px 8px rgba(60, 64, 67, 0.15);
  --shadow-xl: 0 8px 16px rgba(60, 64, 67, 0.15);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Layout */
  --sidebar-width: 280px;
  --sidebar-collapsed-width: 60px;
  --header-height: 64px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables */
[data-theme="dark"], body.dark-mode {
  --bg-primary: #1F1F1F;
  --bg-secondary: #2D2E30;
  --bg-tertiary: #36373A;
  --bg-sidebar: #262626;
  --bg-hover: #3C3C3C;
  --bg-active: #0F4C3A;

  --text-primary: #FFFFFF;
  --text-secondary: #E8EAED;
  --text-tertiary: #9AA0A6;
  --text-accent: #1e442e;

  /* Custom darker green theme for dark mode */
  --evernote-green: #1e442e;
  --evernote-green-hover: #2c4f3a;
  --evernote-green-light: #365541;
  --evernote-green-dark: #152a1c;

  --border-light: #3C4043;
  --border-medium: #5F6368;
  --border-dark: #80868B;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 8px 16px rgba(0, 0, 0, 0.5);
}

/* ============================================
   TYPOGRAPHY - EVERNOTE STYLE
   ============================================ */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-secondary);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  margin: 0 0 var(--space-sm) 0;
}

h1 { font-size: 28px; font-weight: 700; }
h2 { font-size: 24px; }
h3 { font-size: 20px; }
h4 { font-size: 18px; }
h5 { font-size: 16px; }
h6 { font-size: 14px; }

.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-accent { color: var(--text-accent); }

/* ============================================
   LAYOUT - TWO PANEL STRUCTURE
   ============================================ */
.app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar */
.app-sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  height: 100vh;
  z-index: 100;
  transition: width var(--transition-base);
  overflow: hidden;
}

.sidebar-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-primary);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-primary);
}

.sidebar-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--evernote-green);
  color: white;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
}

.sidebar-logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.sidebar-version {
  font-size: 10px;
  color: var(--evernote-green);
  font-weight: 600;
  display: block;
  margin-top: 2px;
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  padding: var(--space-md) 0;
  overflow-y: auto;
  background: #2a2626 !important;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  margin: 2px var(--space-sm);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 20px;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  background: none;
  width: calc(100% - 16px);
  justify-content: flex-start;
}

.sidebar-nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.sidebar-nav-item.active {
  background: var(--bg-active);
  color: var(--evernote-green);
  font-weight: 600;
}

.sidebar-nav-item svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.sidebar-nav-badge {
  background: var(--evernote-red);
  color: white;
  border-radius: var(--radius-full);
  padding: 2px 6px;
  font-size: 11px;
  font-weight: 600;
  margin-left: auto;
}

/* Main Content Area */
.app-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  background: var(--bg-primary);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition-base);
}

.main-header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.main-content {
  flex: 1;
  padding: var(--space-xl);
  overflow-y: auto;
  background: var(--bg-secondary);
}

/* ============================================
   EVERNOTE COMPONENTS
   ============================================ */

/* Cards - Note-like Design */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-base);
  margin-bottom: var(--space-md);
}

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

.card-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-primary);
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  padding: var(--space-lg);
}

.card-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-light);
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Buttons - Evernote Style */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  line-height: 1.5;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  outline: none;
  position: relative;
}

.btn:focus-visible {
  box-shadow: 0 0 0 2px var(--evernote-green);
}

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

.btn-primary:hover {
  background: var(--evernote-green-hover);
  border-color: var(--evernote-green-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-large {
  padding: var(--space-md) var(--space-lg);
  font-size: 16px;
}

.btn-small {
  padding: var(--space-xs) var(--space-sm);
  font-size: 12px;
}

/* Form Elements - Clean Evernote Style */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
}

.form-input,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input:focus,
input:focus,
textarea:focus,
select:focus {
  border-color: var(--evernote-green);
  box-shadow: 0 0 0 3px rgba(0, 168, 45, 0.1);
}

.form-input::placeholder,
input::placeholder,
textarea::placeholder {
  color: var(--text-tertiary);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
}

.badge-primary {
  background: var(--evernote-green);
  color: white;
}

.badge-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.badge-success {
  background: white !important;
  color: black !important;
  border: 1px solid #10B981 !important;
}

[data-theme="dark"] .badge-success {
  background: #1e1e1e !important;
  color: white !important;
  border: 1px solid #10B981 !important;
}

.badge-warning {
  background: var(--evernote-yellow);
  color: var(--text-primary);
}

.badge-danger {
  background: var(--evernote-red);
  color: white;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.stat-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: var(--evernote-green);
  box-shadow: var(--shadow-md);
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--evernote-green);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}

/* Mode Cards */
.mode-selector {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.mode-card {
  background: var(--bg-primary);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
}

.mode-card:hover {
  border-color: var(--evernote-green);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.mode-card.selected {
  border-color: var(--evernote-green);
  background: rgba(0, 168, 45, 0.05);
}

.mode-icon {
  font-size: 48px;
  margin-bottom: var(--space-md);
  color: var(--evernote-green);
}

[data-theme="dark"] .mode-icon {
  background: #21252a !important;
}

.mode-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.mode-description {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none !important; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
  .app-sidebar {
    width: var(--sidebar-collapsed-width);
  }

  .sidebar-logo-text,
  .sidebar-version {
    display: none;
  }

  .sidebar-nav-item {
    padding: var(--space-sm);
    justify-content: center;
  }

  .sidebar-nav-item span:not(.sidebar-nav-badge) {
    display: none;
  }

  .app-main {
    margin-left: var(--sidebar-collapsed-width);
  }

  .main-content {
    padding: var(--space-md);
  }

  .mode-selector {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   THEME TOGGLE
   ============================================ */
.theme-toggle {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  z-index: 1000;
}

.theme-toggle:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   SMOOTH TRANSITIONS
   ============================================ */
* {
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              box-shadow var(--transition-fast);
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--border-dark);
}