/* Unified Theme System for sikho.ai */

:root {
    /* Light Mode Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;

    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --text-inverse: #ffffff;

    --border-primary: #e2e8f0;
    --border-secondary: #cbd5e1;

    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --accent-hover: #2563eb;
    --accent-light: #eff6ff;

    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fed7aa;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #6366f1;
    --info-light: #e0e7ff;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.08);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;

    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-inverse: #0f172a;

    --border-primary: #334155;
    --border-secondary: #475569;

    --accent-primary: #60a5fa;
    --accent-secondary: #3b82f6;
    --accent-hover: #93c5fd;
    --accent-light: #1e3a8a;

    --success: #34d399;
    --success-light: #064e3b;
    --warning: #fbbf24;
    --warning-light: #78350f;
    --danger: #f87171;
    --danger-light: #7f1d1d;
    --info: #818cf8;
    --info-light: #312e81;

    /* Dark mode shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Base Theme Application */
body {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Theme Components */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--gradient-secondary);
    color: var(--text-inverse);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-danger {
    background: var(--danger);
    color: white;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

/* Form Elements */
input, textarea, select {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    transition: all var(--transition-base);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-light);
}

/* Theme Toggle Switch */
.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-full);
    padding: var(--space-sm);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

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

.theme-toggle i {
    font-size: 18px;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

/* Toggle Switch Component */
.switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-tertiary);
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: var(--transition-base);
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent-primary);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Loading Animation */
@keyframes shimmer {
    0% {
        background-position: -468px 0;
    }
    100% {
        background-position: 468px 0;
    }
}

.skeleton {
    animation-duration: 1.25s;
    animation-fill-mode: forwards;
    animation-iteration-count: infinite;
    animation-name: shimmer;
    animation-timing-function: linear;
    background: linear-gradient(
        to right,
        var(--bg-tertiary) 8%,
        var(--bg-secondary) 18%,
        var(--bg-tertiary) 33%
    );
    background-size: 800px 104px;
    position: relative;
}

/* Utility Classes */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--accent-primary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }

.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-tertiary { background-color: var(--bg-tertiary); }
.bg-accent { background-color: var(--accent-primary); }

.gradient-primary { background: var(--gradient-primary); }
.gradient-secondary { background: var(--gradient-secondary); }
.gradient-success { background: var(--gradient-success); }
.gradient-warm { background: var(--gradient-warm); }

/* Transitions */
.fade-in {
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-in-up {
    animation: slideInUp var(--transition-base);
}

@keyframes slideInUp {
    from {
        transform: translateY(10px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}