/* === THEME.CSS (Light / Dark Mode CSS Variables) === */

/* Root theme variables (light mode as default) */
:root {
  /* Light mode (default) */
  --color-bg-primary: #f8f9fc;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-hover: #eef2ff;
  
  --color-text-primary: #0f172a;
  --color-text-secondary: #1e293b;
  --color-text-muted: #64748b;
  --color-text-hint: #94a3b8;
  
  --color-border: #e2e8f0;
  --color-border-hover: #c7d2fe;
  --color-border-input: #cbd5e1;
  
  --color-accent: #4f46e5;
  --color-accent-hover: #4338ca;
  --color-accent-dark: #3730a3;
  --color-accent-light: #eef2ff;
  --color-accent-text: #3730a3;
  
  --color-card-bg: #ffffff;
  --color-card-border: #e2e8f0;
  --color-card-shadow: rgba(0, 0, 0, 0.06);
  
  --color-chat-bg: #fcfcfc;
  --color-ai-bubble-bg: #ffffff;
  --color-ai-bubble-text: #334155;
  
  --color-preview-top: #f1f5f9;
  --color-preview-body: #ffffff;
  --color-preview-line: #334155;
  --color-preview-user-bg: #eef2ff;
  --color-preview-user-border: #c7d2fe;
  
  --color-error-bg: #fff1f2;
  --color-error-border: #fecdd3;
  --color-error-text: #9f1239;
  
  --color-correction-bg: #fffbeb;
  --color-correction-border: #fcd34d;
  --color-correction-text: #b45309;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 10px 20px rgba(0, 0, 0, 0.05);
}

/* Dark Mode */
body.dark-mode {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-bg-hover: #1e2a4a;
  
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-text-hint: #64748b;
  
  --color-border: #334155;
  --color-border-hover: #6366f1;
  --color-border-input: #475569;
  
  --color-accent: #6366f1;
  --color-accent-hover: #818cf8;
  --color-accent-dark: #4f46e5;
  --color-accent-light: #1e2a4a;
  --color-accent-text: #a5b4fc;
  
  --color-card-bg: #1e293b;
  --color-card-border: #334155;
  --color-card-shadow: rgba(0, 0, 0, 0.3);
  
  --color-chat-bg: #0f172a;
  --color-ai-bubble-bg: #1e293b;
  --color-ai-bubble-text: #e2e8f0;
  
  --color-preview-top: #334155;
  --color-preview-body: #1e293b;
  --color-preview-line: #e2e8f0;
  --color-preview-user-bg: #1e2a4a;
  --color-preview-user-border: #6366f1;
  
  --color-error-bg: #450a0a;
  --color-error-border: #991b1b;
  --color-error-text: #fca5a5;
  
  --color-correction-bg: #451a03;
  --color-correction-border: #b45309;
  --color-correction-text: #fcd34d;
  
  /* Shadows for dark mode */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.4);
  --shadow-card-hover: 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* Theme Toggle Button - Inline version for topbar */
.theme-toggle-inline {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all 0.2s ease;
}

.theme-toggle-inline:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.theme-toggle-inline i.fa-sun { display: none; }
.theme-toggle-inline i.fa-moon { display: block; }

body.dark-mode .theme-toggle-inline i.fa-sun { display: block; }
body.dark-mode .theme-toggle-inline i.fa-moon { display: none; }

/* Smooth transition for theme switch */
body {
  transition: background-color 0.3s ease, color 0.3s ease;
}

.sidebar,
.auth-card,
.tool-card,
.landing-card,
.role-card,
.hero-left,
.hero-right,
.preview-card,
.chat-interface,
.input-area,
.stat {
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}