/* Basic Clean CSS */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f6f9;
    margin: 0;
    color: #333;
}

/* Auth Pages */
.login-container {
    max-width: 400px;
    margin: 80px auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.login-header {
    text-align: center;
    margin-bottom: 25px;
}

/* Forms */
.form-group {
    margin-bottom: 15px;
}

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

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    text-align: center;
}

.btn-primary { background-color: #007bff; color: white; }
.btn-primary:hover { background-color: #0056b3; }

.btn-danger { background-color: #dc3545; color: white; }
.btn-success { background-color: #28a745; color: white; }

/* Admin Layout */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background: #343a40;
    color: white;
    padding: 20px 0;
}

.sidebar h3 {
    text-align: center;
    margin-bottom: 30px;
    color: #fff;
}

.sidebar a {
    display: block;
    padding: 12px 20px;
    color: #c2c7d0;
    text-decoration: none;
}

.sidebar a:hover, .sidebar a.active {
    background: #495057;
    color: white;
}

.main-content {
    flex: 1;
    padding: 20px;
}

/* Dashboard Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    border-left: 4px solid #007bff;
}

.stat-card h3 { margin: 0; font-size: 2em; }
.stat-card p { margin: 5px 0 0; color: #666; }

/* Tables */
.table-responsive {
    overflow-x: auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

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

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

th { background-color: #f8f9fa; }

/* Alerts */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}
.alert-success { background-color: #d4edda; color: #155724; }
.alert-danger { background-color: #f8d7da; color: #721c24; }

/* Verification Page */
.verify-box {
    max-width: 500px;
    margin: 50px auto;
    text-align: center;
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.result-icon { font-size: 60px; display: block; margin-bottom: 20px; }
.valid { color: #28a745; }
.used { color: #ffc107; }
.invalid { color: #dc3545; }