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

:root {
    /* Brand Colors */
    --primary: #4F46E5;
    --primary-hover: #4338CA;
    --accent: #06B6D4;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    
    /* Light Mode Palette */
    --bg-body: #F9FAFB;
    --bg-card: #FFFFFF;
    --bg-sidebar: #FFFFFF;
    --text-main: #111827;
    --text-muted: #6B7280;
    --border-color: #F3F4F6;
    --input-bg: #FFFFFF;
    
    /* Component Tokens */
    --radius-card: 12px;
    --radius-btn: 8px;
    --radius-pill: 20px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    /* Animation Speeds */
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Palette */
[data-theme="dark"] {
    --bg-body: #0B0F1A;
    --bg-card: #161B2D;
    --bg-sidebar: #161B2D;
    --text-main: #F9FAFB;
    --text-muted: #9CA3AF;
    --border-color: #2D3748;
    --input-bg: #1F2937;
}

/* Global Styles */
body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    transition: var(--transition);
    -webkit-font-smoothing: antialiased;
}

/* Typography Enhancements */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.025em;
}

/* Glassmorphism for AI Components */
.ai-glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .ai-glass {
    background: rgba(22, 27, 45, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Custom Scholara Components */

/* Modern Cards */
.s-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

/* Premium Buttons */
.btn-primary {
    background-color: var(--primary);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-btn);
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

/* Form Styling */
.s-input {
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-btn);
    padding: 0.6rem 1rem;
    width: 100%;
    color: var(--text-main);
    transition: var(--transition);
}

.s-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* AI Chat Bubble Animation */
@keyframes chatFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.chat-bubble {
    animation: chatFadeIn 0.3s ease-out forwards;
    max-width: 80%;
    padding: 1rem;
    border-radius: 16px;
    margin-bottom: 1rem;
}

.chat-bubble-ai {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border-bottom-left-radius: 4px;
}

.chat-bubble-user {
    background-color: var(--border-color);
    color: var(--text-main);
    border-bottom-right-radius: 4px;
    margin-left: auto;
}

/* Badge System */
.s-badge {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-premium {
    background: linear-gradient(to right, #F59E0B, #D97706);
    color: white;
}

/* Loading Shimmer (Skeleton) */
.shimmer {
    background: linear-gradient(90deg, var(--border-color) 25%, var(--bg-card) 50%, var(--border-color) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 10px;
}

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

/* RTL Support for Arabic */
[dir="rtl"] {
    text-align: right;
}

[dir="rtl"] .chat-bubble-ai {
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 4px;
}