:root {
    --primary: #4CAF50;
    --secondary: #2196F3;
    --bg: #f5f5f5;
    --card-bg: white;
    --text: #333;
    --success: #4CAF50;
    --danger: #f44336;
    --warning: #ff9800;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Roboto', sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 20px; }
h1, h2 { text-align: center; margin-bottom: 20px; }
h1 { color: var(--primary); }
h2 { color: var(--secondary); }

/* Cards untuk landing dan dashboard */
.cards, .dashboard { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.card, .event-card { background: var(--card-bg); padding: 20px; border-radius: 15px; text-align: center; text-decoration: none; box-shadow: 0 4px 8px rgba(0,0,0,0.1); transition: transform 0.3s, box-shadow 0.3s; }
.card:hover, .event-card:hover { transform: translateY(-5px); box-shadow: 0 6px 12px rgba(0,0,0,0.15); }
.card i, .event-card i { font-size: 3em; color: var(--secondary); margin-bottom: 10px; }
.card h2, .event-card h3 { color: var(--text); margin-bottom: 10px; }
.attended { position: absolute; top: 10px; right: 10px; color: var(--success); font-size: 2em; }

/* Form umum (mobile-friendly) */
form { background: var(--card-bg); padding: 30px; border-radius: 15px; box-shadow: 0 4px 8px rgba(0,0,0,0.1); max-width: 400px; margin: 0 auto; }
input, select, textarea, button { width: 100%; padding: 12px; margin: 10px 0; border: 1px solid #ddd; border-radius: 8px; font-size: 16px; font-family: inherit; }
textarea { resize: vertical; min-height: 80px; }
button { background: var(--primary); color: white; border: none; cursor: pointer; transition: background 0.3s; font-weight: bold; }
button:hover { background: #45a049; }
button[style*="var(--danger)"] { background: var(--danger); }
button[style*="var(--danger)"]:hover { background: #da190b; }

/* Admin Menu */
.admin-menu { display: flex; flex-wrap: wrap; gap: 15px; justify-content: center; margin: 20px 0; }
.admin-menu a { background: var(--secondary); color: white; padding: 15px 20px; border-radius: 10px; text-decoration: none; display: flex; align-items: center; gap: 10px; transition: background 0.3s; font-weight: bold; }
.admin-menu a:hover { background: #1976d2; }

/* QR Container */
.qr-container { text-align: center; margin: 20px 0; }

/* Scan Page */
#qr-reader { width: 100%; max-width: 400px; margin: 20px auto; border: 2px solid var(--primary); border-radius: 10px; }
.result { text-align: center; margin: 20px; padding: 15px; border-radius: 10px; display: none; font-weight: bold; }
.result.success { background: var(--success); color: white; }
.result.error { background: var(--danger); color: white; }

/* Table untuk lihat kehadiran */
table { width: 100%; border-collapse: collapse; margin: 20px 0; background: var(--card-bg); border-radius: 10px; overflow: hidden; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
th, td { padding: 12px; text-align: left; border-bottom: 1px solid #ddd; }
th { background: var(--secondary); color: white; font-weight: bold; }
tbody tr:hover { background: #f9f9f9; }

/* Links dan Buttons Umum */
a { color: var(--secondary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Mobile Responsive (Mobile-First) */
@media (max-width: 768px) {
    .container { padding: 10px; }
    .cards, .dashboard, .admin-menu { grid-template-columns: 1fr; flex-direction: column; align-items: center; gap: 15px; }
    form { padding: 20px; margin: 10px; }
    input, select, button { font-size: 18px; padding: 15px; }  /* Larger untuk touch screen */
    .admin-menu a { padding: 12px 16px; font-size: 16px; width: 100%; justify-content: center; }
    table { font-size: 14px; overflow-x: auto; display: block; white-space: nowrap; }
    th, td { padding: 8px 4px; min-width: 80px; }
    #qr-reader { max-width: 100%; }
}

/* Dark Mode Optional (Tambah jika perlu) */
@media (prefers-color-scheme: dark) {
    :root { --bg: #121212; --card-bg: #1e1e1e; --text: #e0e0e0; }
}

.qr-container {
    text-align: center;
    margin: 20px 0;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    display: none;
}
.qr-container canvas, .qr-container img {  /* Support canvas/SVG */
    display: block;
    margin: 0 auto;
    border: 2px solid var(--primary);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
.qr-generated {
    opacity: 1;
    display: block;
}
/* Admin Lihat Kehadiran - Fix Tampilan */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.header-actions {
    display: flex;
    gap: 10px;
}

.btn-back, .btn-export, .btn-clear, .btn-filter, .btn-primary {
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    border-radius: 5px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
    transition: background 0.3s;
}

.btn-export { background: #27ae60; }
.btn-clear { background: #95a5a6; }
.btn-filter { background: var(--primary); border: none; cursor: pointer; }
.btn-primary:hover { background: #2980b9; }
.btn-export:hover { background: #219a52; }
.btn-clear:hover { background: #7f8c8d; }

.filter-section {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.filter-form {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: end;
}

.form-group {
    display: flex;
    flex-direction: column;
    min-width: 200px;
}

.form-group label {
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input, .form-group select {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.stat-card h3 {
    margin: 0 0 10px;
    color: var(--text);
    font-size: 1.1rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--success);
    margin: 0;
}

.table-container {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.table-container h2 {
    padding: 20px;
    margin: 0;
    background: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
}

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

.absen-table th, .absen-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

.absen-table th {
    background: #f8f9fa;
    font-weight: 500;
}

.absen-table tr:hover {
    background: #f8f9fa;
}

.btn-view {
    background: var(--primary);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

.btn-view:hover {
    background: #2980b9;
}

.empty-state {
    text-align: center;
    padding: 50px 20px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.empty-state h2 {
    color: var(--text);
    margin: 15px 0;
}

.empty-state p {
    color: #7f8c8d;
    margin-bottom: 20px;
}

/* Responsif */
@media (max-width: 768px) {
    .filter-form { flex-direction: column; align-items: stretch; }
    .form-group { min-width: auto; }
    .admin-header { flex-direction: column; text-align: center; }
    .absen-table { font-size: 0.9rem; }
    .absen-table th, .absen-table td { padding: 8px; }
}
/* Lihat Kehadiran - Layout Gender Kiri-Kanan */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.btn-back {
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    border-radius: 5px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.filter-section {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.filter-form {
    display: flex;
    gap: 15px;
    align-items: center;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group select {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
    min-width: 250px;
}

.btn-clear {
    background: #95a5a6;
    color: white;
    padding: 8px 16px;
    border-radius: 5px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn-clear:hover {
    background: #7f8c8d;
}

/* Layout Gender Kiri-Kanan */
.gender-layout {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.gender-column {
    flex: 1;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 20px;
}

.gender-column h2 {
    margin: 0 0 15px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.male-column h2 { color: #2980b9; }  /* Biru untuk male */
.female-column h2 { color: #e74c3c; }  /* Merah untuk female */

.gender-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 15px;
}

.gender-table th, .gender-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

.gender-table th {
    background: #f8f9fa;
    font-weight: 500;
    color: var(--text);
}

.gender-table tr:hover {
    background: #f8f9fa;
}

.gender-table td {
    font-size: 0.9rem;
}

.total-count {
    text-align: center;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 5px;
    font-size: 1.1rem;
    color: var(--primary);
}

.empty-gender {
    text-align: center;
    padding: 40px 20px;
    color: #7f8c8d;
}

.empty-state {
    text-align: center;
    padding: 50px 20px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin: 20px 0;
}

.empty-state h2 {
    color: var(--text);
    margin: 15px 0;
}

.empty-state p {
    color: #7f8c8d;
    margin-bottom: 20px;
}

/* Responsif: Mobile Stack Vertikal */
@media (max-width: 768px) {
    .gender-layout {
        flex-direction: column;
        gap: 15px;
    }
    
    .filter-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-group select {
        min-width: auto;
    }
    
    .admin-header {
        flex-direction: column;
        text-align: center;
    }
    
    .gender-table {
        font-size: 0.85rem;
    }
    
    .gender-table th, .gender-table td {
        padding: 8px;
    }
}