/* Modern Clean Design - Common Styles */

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #059669;
    --danger-color: #dc2626;
    --warning-color: #d97706;
    --info-color: #0891b2;
    --dark-color: #1f2937;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --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);
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--gray-50);
    min-height: 100vh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    margin: 0;
    padding: 0;
}

/* Modern Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--gray-900);
    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: 1.125rem; }

/* Modern Navigation Bar */
.navbar-custom {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-weight: 700;
    color: var(--gray-900) !important;
    font-size: 1.5rem;
    letter-spacing: -0.025em;
}

.navbar-nav .nav-link {
    color: var(--gray-600) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
    background-color: var(--gray-100);
}

.navbar-nav .nav-link.active {
    color: white !important;
    background-color: var(--primary-color);
}

/* Modern Welcome Section */
.welcome-section {
    background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
    padding: 5rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.welcome-title {
    color: var(--gray-900);
    font-weight: 700;
    margin-bottom: 1.5rem;
    font-size: 3rem;
    letter-spacing: -0.025em;
}

.welcome-subtitle {
    color: var(--gray-600);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 2rem;
}

.welcome-icon {
    color: var(--primary-color);
    font-size: 4rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Content Section */
.content-section {
    padding: 4rem 0;
    min-height: 60vh;
}

/* Modern Cards */
.card {
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    background-color: white;
    transition: all 0.3s ease;
    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: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background-color: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    padding: 1rem 1.5rem;
}

.contest-card {
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid var(--gray-200);
    background-color: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

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

/* Modern Tables */
.table {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.criteria-table th {
    background-color: var(--gray-50);
    border-color: var(--gray-200);
    font-weight: 600;
    color: var(--gray-900);
    padding: 1rem;
}

.criteria-table td {
    border-color: var(--gray-200);
    padding: 1rem;
}

.score-input {
    width: 80px;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.score-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Modern Buttons */
.btn {
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    border: none;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

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

.btn-success {
    background-color: var(--success-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-success:hover {
    background-color: #047857;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
    background-color: #b91c1c;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-warning:hover {
    background-color: #b45309;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

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

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

/* Modern Forms */
.form-control {
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background-color: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-label {
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    display: block;
}

.form-select {
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background-color: white;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Modern Alerts */
.alert {
    border-radius: var(--border-radius);
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid;
    font-weight: 500;
}

.alert-success {
    background-color: #f0fdf4;
    border-color: #bbf7d0;
    color: #166534;
}

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

.alert-warning {
    background-color: #fffbeb;
    border-color: #fed7aa;
    color: #92400e;
}

.alert-info {
    background-color: #f0f9ff;
    border-color: #bae6fd;
    color: #1e40af;
}

/* Modern Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

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

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

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

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

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

.bg-secondary {
    background-color: var(--gray-500) !important;
    color: white;
}

/* Modern Footer */
.footer-custom {
    background-color: white;
    border-top: 1px solid var(--gray-200);
    padding: 3rem 0 2rem;
    margin-top: 4rem;
}

.footer-content {
    color: var(--gray-600);
    text-align: center;
}

.footer-links {
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--gray-600);
    text-decoration: none;
    margin: 0 1rem;
    transition: color 0.2s ease;
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* Modern Utilities */
.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-info { color: var(--info-color) !important; }
.text-muted { color: var(--gray-500) !important; }

.border-0 { border: none !important; }
.rounded { border-radius: var(--border-radius) !important; }
.rounded-lg { border-radius: var(--border-radius-lg) !important; }

.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

/* Responsive Design */
@media (max-width: 768px) {
    .welcome-section {
        padding: 3rem 0;
    }
    
    .welcome-title {
        font-size: 2rem;
    }
    
    .welcome-subtitle {
        font-size: 1rem;
    }
    
    .content-section {
        padding: 2rem 0;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.8rem;
    }
    
    .card-body {
        padding: 1rem;
    }
}