/* TVRI Equipment Management System - Custom Styles */

:root {
    --tvri-blue: #1e90ff;
    --tvri-dark: #0066cc;
    --tvri-light: #4da6ff;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --dark-gray: #6c757d;
    --text-dark: #343a40;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-gray);
    line-height: 1.6;
    color: var(--text-dark);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--medium-gray);
}
::-webkit-scrollbar-thumb {
    background: var(--tvri-blue);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--tvri-dark);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}
.loading-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Header Section */
.header-section {
    background: linear-gradient(135deg, var(--tvri-blue), var(--tvri-dark));
    color: white;
    padding: 2rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.header-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
}
.header-section .lead {
    font-size: 1.2rem;
    opacity: 0.9;
}
.connection-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* == FIX UTAMA UNTUK MASALAH MOBILE == */
/* Menetapkan 'stacking context' agar konten utama selalu di atas footer */
.tab-content {
    position: relative; /* Diperlukan agar z-index berfungsi */
    z-index: 2;
}
.footer {
    position: relative;
    z-index: 1;
}
/* ===================================== */


/* Statistics Cards */
.stat-card {
    background: white;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--medium-gray);
    transition: transform 0.2s, box-shadow 0.2s;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}
.stat-card .stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1rem;
    flex-shrink: 0;
}
.stat-card .stat-icon.bg-primary { background: var(--tvri-blue); }
.stat-card .stat-icon.bg-success { background: var(--success-color); }
.stat-card .stat-icon.bg-warning { background: var(--warning-color); }
.stat-card .stat-icon.bg-info { background: var(--info-color); }
.stat-card h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
}
.stat-card p {
    font-size: 0.9rem;
    color: var(--dark-gray);
    margin: 0;
}

/* Tab Navigation */
.nav-tabs-custom {
    border-bottom: 1px solid var(--medium-gray);
}
.nav-tabs-custom .nav-link {
    border: none;
    color: var(--dark-gray);
    font-weight: 600;
    padding: 1rem 1.5rem;
    transition: all 0.2s;
    border-bottom: 3px solid transparent;
}
.nav-tabs-custom .nav-link.active {
    background-color: transparent;
    color: var(--tvri-blue);
    border-color: var(--tvri-blue);
}
.nav-tabs-custom .nav-link:hover {
    color: var(--tvri-dark);
}

/* Form Cards */
.form-card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--medium-gray);
}
.form-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--medium-gray);
}
.form-header h4 {
    font-weight: 600;
}

/* Form Controls */
.form-label {
    font-weight: 600;
    color: var(--text-dark);
}
.form-control, .form-select {
    border: 1px solid #ced4da;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-control:focus, .form-select:focus {
    border-color: var(--tvri-blue);
    box-shadow: 0 0 0 0.25rem rgba(30, 144, 255, 0.25);
}

/* Buttons */
.btn {
    border-radius: 8px;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    transition: all 0.2s;
}
.btn-primary {
    background: var(--tvri-blue);
    border-color: var(--tvri-blue);
}
.btn-primary:hover {
    background: var(--tvri-dark);
    border-color: var(--tvri-dark);
}

/* Tables */
.table {
    vertical-align: middle;
}
.table thead th {
    background: var(--light-gray);
    font-weight: 600;
    padding: 1rem;
}

/* Badges */
.badge {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.5em 0.75em;
}
.badge.bg-warning {
    color: var(--text-dark) !important;
}

/* Alerts */
.alert {
    border-radius: 8px;
    border-width: 1px;
    border-style: solid;
}

/* Multiple Equipment Row Styles (from previous request) */
.equipment-row {
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid var(--medium-gray);
    border-radius: 8px;
    background-color: var(--light-gray);
    transition: border-color 0.2s;
}
.equipment-row:focus-within {
    border-color: var(--tvri-blue);
}
.remove-equipment-row-btn {
    margin-top: 1.75rem; /* align with form fields */
}


/* Responsive Adjustments */
@media (max-width: 768px) {
    .header-section h1 {
        font-size: 1.8rem;
    }
    .header-section .lead {
        font-size: 1rem;
    }
    .stat-card {
        margin-bottom: 1rem;
    }
    .nav-tabs-custom .nav-link {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    .form-card {
        padding: 1.5rem;
    }
    .remove-equipment-row-btn {
        width: 100%;
        margin-top: 0;
    }
}