:root {
    --primary: #e31837;
    --secondary: #1a1a2e;
    --light: #f5f5f5;
    --dark: #16213e;
    --white: #ffffff;
    --gray: #6c757d;
    --success: #28a745;
    --danger: #dc3545;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    width: 100%;
}

/* Navbar */
.navbar {
    background: var(--white);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 3rem 1rem;
    border-radius: 12px;
    margin-bottom: 2rem;
}

/* Cards */
.card {
    background: var(--white);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.05);
    margin-bottom: 20px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.7rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    text-align: center;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

/* Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
    border-radius: 8px;
    background: white;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

/* Forms */
.form-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.form-group {
    flex: 1;
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

input, select, textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
}

/* Responsive Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* Responsive Design Queries */
@media (max-width: 992px) {
    .container { max-width: 950px; }
}

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        gap: 10px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero {
        padding: 2rem 1rem;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .card {
        padding: 15px;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 10px;
    }
    
    /* Responsive Table Card View */
    .responsive-table td {
        display: block;
        width: 100%;
        text-align: right;
        position: relative;
        padding-left: 50%;
    }
    
    .responsive-table td::before {
        content: attr(data-label);
        position: absolute;
        left: 15px;
        width: 45%;
        text-align: left;
        font-weight: bold;
    }
    
    .responsive-table thead {
        display: none;
    }
}

/* Login Page */
.login-page {
    background-color: var(--light);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 320px;
}

.login-box {
    background: var(--white);
    padding: 20px 25px;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    width: 100%;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 15px;
    font-size: 1.3rem;
    font-weight: 800;
}

.login-box .form-group {
    text-align: left;
}

.error {
    background: #fff5f5;
    color: #c53030;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    border-left: 4px solid #f56565;
}

.back-link {
    display: block;
    text-align: center;
    margin-top: 20px;
    color: var(--gray);
    text-decoration: none;
    font-size: 0.9rem;
}

.back-link:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    .login-box {
        padding: 30px 20px;
    }
}

/* Responsive Fixes for All Pages */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
    
    .container {
        padding: 0 10px;
    }
    
    h1 { font-size: 1.5rem !important; }
    h2 { font-size: 1.3rem !important; }
    h3 { font-size: 1.1rem !important; }
    
    .competition-grid {
        grid-template-columns: 1fr !important;
    }
    
    .card {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .btn {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    .form-group {
        margin-bottom: 10px;
    }
    
    input, select, textarea {
        font-size: 14px;
        padding: 10px 8px;
    }
    
    table {
        font-size: 13px;
    }
    
    th, td {
        padding: 8px;
    }
    
    .navbar {
        padding: 10px 0;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }
    
    .nav-menu a {
        padding: 6px 10px;
        font-size: 12px;
    }
    
    .hero {
        padding: 1.5rem 1rem;
        border-radius: 0 0 30px 30px;
    }
    
    .hero h1 {
        font-size: 1.3rem;
    }
    
    .status-badge {
        font-size: 11px !important;
        padding: 3px 8px;
    }
    
    .timer-display {
        font-size: 1rem !important;
    }
    
    .card > div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }
    
    iframe {
        width: 100% !important;
        height: auto !important;
    }
    
    .admin-layout {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100% !important;
    }
    
    .sidebar nav {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .admin-content {
        padding: 10px;
    }
    
    .form-card {
        padding: 15px;
    }
    
    .admin-table {
        display: block;
        overflow-x: auto;
    }
    
    .page-header {
        flex-direction: column;
        gap: 10px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr !important;
    }
    
    .modal-content {
        width: 95% !important;
        padding: 15px !important;
    }
    
    .trash-tabs {
        flex-wrap: wrap;
    }
}

@media (min-width: 769px) {
    .competition-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
        gap: 30px;
    }
}