/* =====================================================
   Dashboard Mahasiswa Akhir - Tema Biru
   ===================================================== */

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

:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #2563eb;
    --light-blue: #3b82f6;
    --soft-blue: #dbeafe;
    --very-light-blue: #eff6ff;
    --dark-blue: #1e293b;
    --white: #ffffff;
    --gray: #64748b;
    --light-gray: #f1f5f9;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(30, 58, 138, 0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--very-light-blue);
    color: var(--dark-blue);
    min-height: 100vh;
}

/* ===== LOGIN PAGE ===== */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--light-blue) 100%);
    padding: 20px;
}

.login-box {
    background: var(--white);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.login-box h1 {
    color: var(--primary-blue);
    text-align: center;
    margin-bottom: 8px;
    font-size: 28px;
}

.login-box .subtitle {
    text-align: center;
    color: var(--gray);
    margin-bottom: 30px;
    font-size: 14px;
}

.login-box .icon-header {
    text-align: center;
    font-size: 48px;
    color: var(--secondary-blue);
    margin-bottom: 10px;
}

/* ===== SIDEBAR ===== */
.layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: linear-gradient(180deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 24px 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: all 0.3s ease;
    z-index: 100;
}

.sidebar-header {
    padding: 0 24px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 20px;
}

.sidebar-header h2 {
    font-size: 18px;
    margin-bottom: 4px;
}

.sidebar-header p {
    font-size: 12px;
    opacity: 0.7;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    padding: 12px 24px;
    color: var(--white);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 14px;
    gap: 12px;
}

.sidebar-menu li a:hover,
.sidebar-menu li a.active {
    background: rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--white);
    padding-left: 20px;
}

.sidebar-menu li a .icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    margin-left: 260px;
    flex: 1;
    padding: 24px 32px;
    width: calc(100% - 260px);
}

.topbar {
    background: var(--white);
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar h1 {
    font-size: 22px;
    color: var(--primary-blue);
}

.topbar .user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--gray);
    font-size: 14px;
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--secondary-blue);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* ===== STAT CARDS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--white);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--secondary-blue);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.stat-card .stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 4px;
}

.stat-card .stat-detail {
    font-size: 12px;
    color: var(--gray);
}

.stat-card.total { border-left-color: var(--primary-blue); }
.stat-card.seminar { border-left-color: var(--light-blue); }
.stat-card.sidang { border-left-color: var(--warning); }
.stat-card.jilid { border-left-color: var(--success); }

/* ===== FILTER BAR ===== */
.filter-bar {
    background: var(--white);
    padding: 20px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    display: flex;
    gap: 16px;
    align-items: end;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 180px;
}

.filter-group label {
    font-size: 13px;
    color: var(--gray);
    font-weight: 600;
}

.filter-group select,
.filter-group input {
    padding: 10px 14px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    background: var(--white);
    color: var(--dark-blue);
    transition: border 0.2s ease;
}

.filter-group select:focus,
.filter-group input:focus {
    outline: none;
    border-color: var(--secondary-blue);
    box-shadow: 0 0 0 3px var(--soft-blue);
}

/* ===== CHARTS ===== */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.chart-card {
    background: var(--white);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow);
}

.chart-card h3 {
    color: var(--primary-blue);
    font-size: 16px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--very-light-blue);
}

.chart-container {
    position: relative;
    height: 320px;
}

/* ===== TABLE ===== */
.table-card {
    background: var(--white);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.table-header h3 {
    color: var(--primary-blue);
    font-size: 18px;
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

table thead {
    background: var(--primary-blue);
    color: var(--white);
}

table th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table tbody tr {
    border-bottom: 1px solid var(--light-gray);
    transition: background 0.15s ease;
}

table tbody tr:hover {
    background: var(--very-light-blue);
}

table td {
    padding: 14px 16px;
    color: var(--dark-blue);
}

/* ===== BADGES ===== */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-pending {
    background: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-info {
    background: var(--soft-blue);
    color: var(--primary-blue);
}

/* ===== BUTTONS ===== */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--secondary-blue);
    color: var(--white);
}

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

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

.btn-success:hover {
    background: #059669;
}

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

.btn-warning:hover {
    background: #d97706;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--dark-blue);
    font-weight: 600;
    font-size: 14px;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    transition: border 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-blue);
    box-shadow: 0 0 0 3px var(--soft-blue);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: var(--very-light-blue);
    border-radius: 8px;
    margin-bottom: 10px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--secondary-blue);
}

.checkbox-group label {
    margin: 0;
    cursor: pointer;
    flex: 1;
}

/* ===== ALERTS ===== */
.alert {
    padding: 14px 18px;
    border-radius: 8px;
    margin-bottom: 18px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

.alert-info {
    background: var(--soft-blue);
    color: var(--primary-blue);
    border-left: 4px solid var(--secondary-blue);
}

/* ===== ACTION BUTTONS ===== */
.action-buttons {
    display: flex;
    gap: 6px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 16px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .toggle-sidebar {
        display: block !important;
    }
}

.toggle-sidebar {
    display: none;
    background: none;
    border: none;
    color: var(--primary-blue);
    font-size: 24px;
    cursor: pointer;
}