/* =================================================================== */
/* 🎨 Base CSS - Premium Design System */
/* Commercial-grade UI components with Glassmorphism & Modern Aesthetics */
/* =================================================================== */

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

:root {
    /* 🎨 Brand Colors - Sophisticated Indigo/Violet Theme */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-surface: linear-gradient(180deg, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0.4) 100%);
    --gradient-glow: radial-gradient(circle at top right, rgba(99, 102, 241, 0.15), transparent 40%);

    /* 🌑 Neutral Colors (Slate) */
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;

    /* 🚦 Semantic Colors */
    --success: #10b981;
    --success-soft: #d1fae5;
    --warning: #f59e0b;
    --warning-soft: #fef3c7;
    --danger: #ef4444;
    --danger-soft: #fee2e2;
    --info: #3b82f6;
    --info-soft: #dbeafe;

    /* 💎 Glassmorphism & Surfaces */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: 1px solid rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --surface-card: #ffffff;
    --surface-bg: #f8fafc;

    /* 📐 Layout & Spacing */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* ✨ Effects */
    --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-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset & Typography */
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--surface-bg);
    color: var(--slate-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    color: var(--slate-900);
    letter-spacing: -0.025em;
}

/* =================================================================== */
/* 📦 Components */
/* =================================================================== */

/* Cards with Glassmorphism */
.base-card {
    background: var(--surface-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--slate-100);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    overflow: hidden;
    position: relative;
}

.base-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.base-glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius-xl);
}

/* Headers */
.base-header {
    background: var(--surface-card);
    border-bottom: 1px solid var(--slate-200);
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.base-title {
    font-size: 1.875rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
}

/* Buttons */
.btn-primary, .base-btn-primary {
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    border: none;
    box-shadow: 0 4px 6px rgba(79, 70, 229, 0.2);
    transition: var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover, .base-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(79, 70, 229, 0.3);
    filter: brightness(1.1);
}

.btn-secondary, .base-btn-secondary {
    background: white;
    color: var(--slate-700);
    border: 1px solid var(--slate-200);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.btn-secondary:hover, .base-btn-secondary:hover {
    background: var(--slate-50);
    border-color: var(--slate-300);
    color: var(--slate-900);
}

/* Badges */
.base-badge {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.badge-primary { background: var(--primary-100); color: var(--primary-700); }
.badge-success { background: var(--success-soft); color: #065f46; }
.badge-danger { background: var(--danger-soft); color: #991b1b; }
.badge-neutral { background: var(--slate-100); color: var(--slate-600); }

/* Form Elements */
.base-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-md);
    background: var(--slate-50);
    color: var(--slate-800);
    font-size: 0.95rem;
    transition: var(--transition-base);
}

.base-input:focus {
    outline: none;
    border-color: var(--primary-500);
    background: white;
    box-shadow: 0 0 0 4px var(--primary-100);
}

/* Tabs */
.base-tabs {
    display: inline-flex;
    background: var(--slate-100);
    padding: 0.25rem;
    border-radius: var(--radius-lg);
    gap: 0.25rem;
}

.base-tab {
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-md);
    color: var(--slate-500);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-base);
    border: none;
    background: transparent;
}

.base-tab.active {
    background: white;
    color: var(--primary-600);
    box-shadow: var(--shadow-sm);
}

.base-tab:hover:not(.active) {
    color: var(--slate-700);
    background: rgba(255, 255, 255, 0.5);
}

/* Utilities */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.shadow-glow {
    box-shadow: var(--shadow-glow);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

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

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--slate-300);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--slate-400);
}