/* ==========================================================================
   GLOBAL RESPONSIVE CSS FRAMEWORK
   Lucky Draw BCJ - Modern & Mobile-First Design
   ========================================================================== */

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Container system */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.container-fluid {
    width: 100%;
    padding: 0 1rem;
}

/* Grid system */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -0.5rem;
}

.col {
    flex: 1;
    padding: 0 0.5rem;
}

.col-12 { flex: 0 0 100%; max-width: 100%; }
.col-11 { flex: 0 0 91.66667%; max-width: 91.66667%; }
.col-10 { flex: 0 0 83.33333%; max-width: 83.33333%; }
.col-9 { flex: 0 0 75%; max-width: 75%; }
.col-8 { flex: 0 0 66.66667%; max-width: 66.66667%; }
.col-7 { flex: 0 0 58.33333%; max-width: 58.33333%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-5 { flex: 0 0 41.66667%; max-width: 41.66667%; }
.col-4 { flex: 0 0 33.33333%; max-width: 33.33333%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-2 { flex: 0 0 16.66667%; max-width: 16.66667%; }
.col-1 { flex: 0 0 8.33333%; max-width: 8.33333%; }

/* Card components */
.card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    overflow: hidden;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.card-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.02);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.5rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: #4a5568;
}

/* Form elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #2d3748;
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
    appearance: none;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control::placeholder {
    color: #a0aec0;
}

select.form-control {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

/* Button styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover:before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: white;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

.btn-block {
    width: 100%;
}

/* Alert components */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    position: relative;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-color: #a7f3d0;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border-color: #fecaca;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-color: #fde68a;
}

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

/* Badge components */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-primary { background: #667eea; color: white; }
.badge-success { background: #10b981; color: white; }
.badge-danger { background: #ef4444; color: white; }
.badge-warning { background: #f59e0b; color: white; }
.badge-info { background: #06b6d4; color: white; }

/* Table styles */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.table th,
.table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.table th {
    background: #f8fafc;
    font-weight: 600;
    color: #2d3748;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

/* Logo styles */
.logo {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.logo-sm {
    max-width: 60px;
    max-height: 60px;
}

.logo-md {
    max-width: 120px;
    max-height: 120px;
}

.logo-lg {
    max-width: 200px;
    max-height: 200px;
}

/* Animation utilities */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in-left {
    animation: slideInLeft 0.5s ease-out;
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* Running text animation */
.running-text {
    overflow: hidden;
    white-space: nowrap;
    width: 100%;
    position: relative;
    height: 30px;
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    padding: 0 1rem;
}

.running-text span {
    position: absolute;
    white-space: nowrap;
    line-height: 30px;
    animation: scroll-left 15s linear infinite;
    left: 100%;
    color: white;
    font-weight: 500;
}

@keyframes scroll-left {
    0% { left: 100%; }
    100% { left: -100%; }
}

/* Utility classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-block { display: block; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-none { display: none; }

.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-end { justify-content: flex-end; }

.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.align-items-end { align-items: flex-end; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

/* Responsive breakpoints */
/* Small devices (portrait phones, less than 576px) */
@media (max-width: 575.98px) {
    html { font-size: 14px; }
    
    .container { padding: 0 0.5rem; }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    h4 { font-size: 1.125rem; }
    h5 { font-size: 1rem; }
    h6 { font-size: 0.875rem; }
    
    .card-header,
    .card-body,
    .card-footer {
        padding: 1rem;
    }
    
    .form-control {
        padding: 0.625rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.8rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
        font-size: 0.875rem;
    }
    
    .d-sm-none { display: none !important; }
    .d-sm-block { display: block !important; }
    .d-sm-flex { display: flex !important; }
    
    .text-sm-center { text-align: center !important; }
}

/* Medium devices (tablets, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
    .col-sm-12 { flex: 0 0 100%; max-width: 100%; }
    .col-sm-6 { flex: 0 0 50%; max-width: 50%; }
    .col-sm-4 { flex: 0 0 33.33333%; max-width: 33.33333%; }
    .col-sm-3 { flex: 0 0 25%; max-width: 25%; }
    
    .d-md-none { display: none !important; }
    .d-md-block { display: block !important; }
    .d-md-flex { display: flex !important; }
}

/* Large devices (desktops, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
    .col-md-12 { flex: 0 0 100%; max-width: 100%; }
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-4 { flex: 0 0 33.33333%; max-width: 33.33333%; }
    .col-md-3 { flex: 0 0 25%; max-width: 25%; }
    
    .d-lg-none { display: none !important; }
    .d-lg-block { display: block !important; }
    .d-lg-flex { display: flex !important; }
}

/* Extra large devices (large desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
    .col-lg-12 { flex: 0 0 100%; max-width: 100%; }
    .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
    .col-lg-4 { flex: 0 0 33.33333%; max-width: 33.33333%; }
    .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
    
    .d-xl-none { display: none !important; }
    .d-xl-block { display: block !important; }
    .d-xl-flex { display: flex !important; }
}

/* Extra extra large devices (1200px and up) */
@media (min-width: 1200px) {
    .col-xl-12 { flex: 0 0 100%; max-width: 100%; }
    .col-xl-6 { flex: 0 0 50%; max-width: 50%; }
    .col-xl-4 { flex: 0 0 33.33333%; max-width: 33.33333%; }
    .col-xl-3 { flex: 0 0 25%; max-width: 25%; }
    .col-xl-2 { flex: 0 0 16.66667%; max-width: 16.66667%; }
}

/* Print styles */
@media print {
    .d-print-none { display: none !important; }
    .d-print-block { display: block !important; }
    
    .card {
        box-shadow: none;
        border: 1px solid #dee2e6;
    }
    
    .btn {
        display: none;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .card {
        background: rgba(255, 255, 255, 0.1);
        color: white;
    }
    
    .form-control {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.2);
        color: white;
    }
    
    .form-control::placeholder {
        color: rgba(255, 255, 255, 0.5);
    }
    
    .table {
        background: rgba(255, 255, 255, 0.1);
        color: white;
    }
    
    .table th {
        background: rgba(0, 0, 0, 0.2);
    }
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
}

/* Loading spinner */
.spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid rgba(102, 126, 234, 0.3);
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Accessibility improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for better accessibility */
.btn:focus,
.form-control:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid #000;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}