/* ==========================================================================
   1. GLOBAL RESETS & VARIABLES
   ========================================================================== */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --success-color: #2ecc71;
    --warning-color: #f1c40f;
    --danger-color: #e74c3c;
    --info-color: #3498db;
    --bg-light: #f4f6f9;
    --text-dark: #333333;
    --border-color: #dddddd;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    padding: 20px;
}

h2, h3, h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* ==========================================================================
   2. OPERATOR CONTROL ROOM UI (Layout components)
   ========================================================================== */
.control-room-container {
    max-width: 1200px;
    margin: 0 auto;
}

.search-card {
    background: #ffffff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    margin-bottom: 25px;
    border-top: 4px solid var(--info-color);
}

.form-inline {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: flex-end;
}

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

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 5px;
}

input[type="text"], 
input[type="number"] {
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

input:focus {
    border-color: var(--info-color);
}

button.btn-primary {
    background-color: var(--info-color);
    color: #fff;
    border: none;
    padding: 11px 20px;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

button.btn-primary:hover {
    background-color: #2980b9;
}

/* Verification Result Profile Pop-up */
.student-profile-card {
    background: #ffffff;
    margin-top: 20px;
    padding: 20px;
    border-radius: 6px;
    border-left: 5px solid var(--success-color);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.action-group {
    margin-top: 15px;
    display: flex;
    gap: 10px;
}

.btn-action {
    padding: 10px 16px;
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-action:hover {
    opacity: 0.9;
}

.btn-remove { background-color: var(--danger-color); }
.btn-add { background-color: var(--success-color); }

/* ==========================================================================
   3. DRIVER APPS & DATA TABLES
   ========================================================================== */
.roster-table-container {
    background: #ffffff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th, td {
    padding: 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
}

tr:hover {
    background-color: #fcfcfc;
}

.avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
    background: #eeeeee;
    border: 2px solid var(--border-color);
}

/* Persistent Header Counter Metric Elements */
.stats-banner {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.stat-box {
    background: #fff;
    padding: 15px 25px;
    border-radius: 6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    font-weight: bold;
    border-bottom: 3px solid var(--border-color);
}
.stat-box.total { border-color: var(--info-color); }
.stat-box.boarded { border-color: var(--success-color); }
.stat-box.absent { border-color: var(--danger-color); }

/* ==========================================================================
   4. THE DRIVER ATTENDANCE TOGGLE SWITCH (No-Save UI Switch)
   ========================================================================== */
.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

/* Hide fallback browser structural checkbox checkbox elements */
.switch input { 
    opacity: 0;
    width: 0;
    height: 0;
}

/* Slider Track Base Element */
.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #ccc;
    transition: 0.3s;
    border-radius: 34px;
}

/* Inner Sliding Control Knob Circle Element */
.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Checked State Changes Background Track to Green color code line */
input:checked + .slider {
    background-color: var(--success-color);
}

/* Translocate Inner Circle Knob across layout width space frame on active trigger state */
input:checked + .slider:before {
    transform: translateX(26px);
}

/* Global Alert System Banners framework styling components */
.error-box {
    padding: 15px;
    background-color: #fde8e8;
    color: var(--danger-color);
    border: 1px solid #f8b4b4;
    border-radius: 4px;
    margin-bottom: 20px;
}