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

body {
    font-family: 'Inter', sans-serif;
    background: #f0f2f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: #1a1a2e;
    color: white;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 24px;
    font-weight: bold;
    color: #e94560;
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 25px;
}

.nav a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.nav a:hover {
    color: #e94560;
}

.admin-link {
    background: #e94560;
    padding: 5px 12px;
    border-radius: 20px;
}

.mobile-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
}

/* Main */
.main {
    min-height: calc(100vh - 180px);
    padding: 40px 0;
}

/* Buttons */
.btn {
    display: inline-block;
    background: #1a1a2e;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
}

.btn:hover {
    background: #e94560;
    transform: translateY(-2px);
}

.btn-primary {
    background: #e94560;
}

.btn-primary:hover {
    background: #c72a48;
}

/* Forms */
.form-container {
    max-width: 500px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
}

.error {
    background: #f8d7da;
    color: #721c24;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.success {
    background: #d4edda;
    color: #155724;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
}

/* Tables */
.table-container {
    overflow-x: auto;
    background: white;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

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

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

th {
    background: #1a1a2e;
    color: white;
}

tr:hover {
    background: #f5f5f5;
}

/* Footer */
.footer {
    background: #1a1a2e;
    color: #888;
    text-align: center;
    padding: 30px;
    margin-top: 40px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav {
        display: none;
        flex-direction: column;
        width: 100%;
        margin-top: 15px;
    }
    
    .nav.active {
        display: flex;
    }
    
    .mobile-btn {
        display: block;
    }
    
    .header-inner {
        flex-wrap: wrap;
    }
}