/**
 * Tu Chance Pro - Premium Styling
 * Modern, Clean, Professional Design System
 */

/* ============================================
   CSS Variables & Design Tokens
   ============================================ */
:root {
    /* Colors */
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #6366f1;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Neutrals */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Borders */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    --border-radius-full: 9999px;
    
    /* Shadows */
    --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);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ============================================
   Base Styles
   ============================================ */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-md);
}

.text-muted {
    color: var(--gray-500) !important;
}

.text-primary {
    color: var(--primary) !important;
}

.text-success {
    color: var(--success) !important;
}

.text-warning {
    color: var(--warning) !important;
}

.text-danger {
    color: var(--danger) !important;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
    border: 1px solid transparent;
    font-size: var(--font-size-sm);
    letter-spacing: 0.025em;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #ffffff;
}

.btn-outline-primary {
    background-color: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline-primary:hover {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.btn-outline-secondary {
    background-color: transparent;
    border-color: var(--gray-300);
    color: var(--gray-700);
}

.btn-outline-secondary:hover {
    background-color: var(--gray-100);
    border-color: var(--gray-400);
    color: var(--gray-900);
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: var(--font-size-xs);
}

/* ============================================
   Cards
   ============================================ */
.card {
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    background: #ffffff;
    overflow: hidden;
}

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

.card-header {
    background-color: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 600;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.card-text {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

/* Raffle Card Specific */
.raffle-card {
    position: relative;
}

.card-img-top-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

.card-img-top {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.raffle-card:hover .card-img-top {
    transform: scale(1.05);
}

.card-img-placeholder {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    width: 100%;
    height: 100%;
}

/* ============================================
   Forms
   ============================================ */
.form-control,
.form-select {
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

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

.form-label {
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.form-text {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
    background: linear-gradient(135deg, var(--gray-50) 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.hero-illustration {
    max-width: 100%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* ============================================
   Step Circles (How It Works)
   ============================================ */
.step-circle {
    width: 100px;
    height: 100px;
    border-radius: var(--border-radius-full);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
}

.step-circle:hover {
    transform: scale(1.1);
}

/* ============================================
   Accordion
   ============================================ */
.accordion-item {
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-md) !important;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.accordion-button {
    font-weight: 600;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: #ffffff;
    color: var(--gray-900);
}

.accordion-button:not(.collapsed) {
    background-color: var(--gray-50);
    color: var(--primary);
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    border-color: var(--primary);
}

.accordion-body {
    padding: var(--spacing-lg);
    color: var(--gray-600);
}

/* ============================================
   Badges
   ============================================ */
.badge {
    font-weight: 500;
    padding: 0.375rem 0.75rem;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    letter-spacing: 0.025em;
}

.bg-success {
    background-color: var(--success) !important;
}

.bg-warning {
    background-color: var(--warning) !important;
}

.bg-danger {
    background-color: var(--danger) !important;
}

.bg-primary {
    background-color: var(--primary) !important;
}

.bg-secondary {
    background-color: var(--secondary) !important;
}

/* ============================================
   Progress Bar
   ============================================ */
.progress {
    background-color: var(--gray-200);
    border-radius: var(--border-radius-full);
    overflow: hidden;
}

.progress-bar {
    background-color: var(--primary);
    transition: width 0.6s ease;
}

/* ============================================
   Tables
   ============================================ */
.table {
    margin-bottom: 0;
}

.table thead th {
    background-color: var(--gray-50);
    border-bottom: 2px solid var(--gray-200);
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tbody td {
    padding: var(--spacing-md) var(--spacing-lg);
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-600);
}

.table-hover tbody tr:hover {
    background-color: var(--gray-50);
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border: 1px solid transparent;
    font-size: var(--font-size-sm);
}

.alert-success {
    background-color: #ecfdf5;
    border-color: #a7f3d0;
    color: #065f46;
}

.alert-danger {
    background-color: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-warning {
    background-color: #fffbeb;
    border-color: #fde68a;
    color: #92400e;
}

.alert-info {
    background-color: #eff6ff;
    border-color: #bfdbfe;
    color: #1e40af;
}

/* ============================================
   Navbar
   ============================================ */
.navbar {
    padding: var(--spacing-md) 0;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95) !important;
}

.navbar-brand {
    font-size: var(--font-size-lg);
}

.nav-link {
    font-weight: 500;
    color: var(--gray-600) !important;
    padding: var(--spacing-sm) var(--spacing-md) !important;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary) !important;
}

/* ============================================
   Footer
   ============================================ */
footer {
    background-color: var(--gray-900);
}

footer a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

footer a:hover {
    color: #ffffff;
}

/* ============================================
   Loading Spinner
   ============================================ */
.spinner-border {
    width: 2rem;
    height: 2rem;
    border-width: 0.25em;
}

/* ============================================
   Number Grid (Raffle Selection)
   ============================================ */
.number-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    gap: var(--spacing-sm);
}

.number-item {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    background: #ffffff;
    color: var(--gray-700);
}

.number-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: scale(1.05);
}

.number-item.selected {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.number-item.sold {
    background-color: var(--gray-200);
    border-color: var(--gray-300);
    color: var(--gray-400);
    cursor: not-allowed;
}

.number-item.sold:hover {
    transform: none;
}

.number-item.reserved {
    background-color: var(--warning);
    border-color: var(--warning);
    color: #ffffff;
    cursor: not-allowed;
}

/* ============================================
   Utility Classes
   ============================================ */
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }

.rounded-sm { border-radius: var(--border-radius-sm) !important; }
.rounded-md { border-radius: var(--border-radius-md) !important; }
.rounded-lg { border-radius: var(--border-radius-lg) !important; }
.rounded-xl { border-radius: var(--border-radius-xl) !important; }
.rounded-2xl { border-radius: var(--border-radius-2xl) !important; }
.rounded-full { border-radius: var(--border-radius-full) !important; }

.bg-light { background-color: var(--gray-50) !important; }
.bg-white { background-color: #ffffff !important; }

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }
    
    .hero-section {
        text-align: center;
    }
    
    .hero-section .d-flex {
        justify-content: center;
    }
    
    .number-grid {
        grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.3s ease;
}

.animate-slide-up {
    animation: slideUp 0.4s ease;
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .navbar,
    footer,
    .btn,
    .no-print {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        color: #000;
    }
}