/*
 * Modern Design System for Trend Collection BD
 * Sleek Midnight Indigo, Rose Violet, and Slate tones
 */

:root {
    /* Color Palette */
    --primary: #4f46e5;       /* Deep Indigo */
    --primary-hover: #4338ca;
    --primary-light: #e0e7ff;
    --accent: #d946ef;        /* Rose Violet / Orchid */
    --accent-hover: #c084fc;
    --accent-light: #fdf4ff;
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --dark: #0f172a;          /* Slate 900 */
    --gray-dark: #334155;     /* Slate 700 */
    --gray-medium: #64748b;   /* Slate 500 */
    --gray-light: #cbd5e1;    /* Slate 300 */
    --gray-bg: #f8fafc;       /* Slate 50 */
    --white: #ffffff;
    
    /* Layout Constants */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    /* Typography */
    --font-sans: 'Plus Jakarta Sans', 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Shadows & Transitions */
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.1);
    --shadow-xl: 0 24px 60px rgba(15, 23, 42, 0.16);
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global resets & typography */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-sans);
}

body {
    background-color: var(--gray-bg);
    color: var(--dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--gray-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--gray-light);
    border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--gray-medium);
}

/* Premium Card Styles */
.premium-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(241, 245, 249, 0.8);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    overflow: hidden;
}

.premium-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(79, 70, 229, 0.15);
}

/* Premium Button Styles */
.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.25);
    transition: var(--transition-normal);
    gap: 8px;
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(79, 70, 229, 0.35);
    background: linear-gradient(135deg, var(--primary-hover), var(--accent));
}

.btn-premium-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: var(--white);
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid var(--primary-light);
    cursor: pointer;
    transition: var(--transition-normal);
    gap: 8px;
}

.btn-premium-secondary:hover {
    background: var(--primary-light);
    color: var(--primary-hover);
    transform: translateY(-2px);
}

/* Glassmorphism utility */
.glass-effect {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}