/* style.css - DET-Express Clean CSS */
:root {
    /* Color Scheme */
    --primary: #3498db;
    --primary-dark: #2980b9;
    --secondary: #2c3e50;
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
    --light: #ecf0f1;
    --dark: #2c3e50;
    --white: #ffffff;
    --gray: #95a5a6;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

/* Zambian Flag Header */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: linear-gradient(
        to right,
        #147F55 0%,
        #147F55 70%,
        #D40829 70%,
        #D40829 85%,
        #000000 85%,
        #000000 90%,
        #F99815 90%,
        #F99815 100%
    );
    z-index: 1000;
}

/* Container Styles */
.det-container {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    margin: 2rem auto;
    max-width: 1200px;
    border: 1px solid #e1e5eb;
}

/* Header Styles */
.det-header {
    color: var(--secondary);
    font-weight: 700;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
    border-bottom: 3px solid var(--primary);
    padding-bottom: 1rem;
}

/* Button Styles */
.det-btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    cursor: pointer;
}

.det-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    color: white;
    text-decoration: none;
}

/* Form Styles */
.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e5eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-label {
    font-weight: 600;
    margin-bottom: 8px;
    display: block;
    color: var(--secondary);
}

/* Card Styles */
.det-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 1px solid #e1e5eb;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.det-card-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 1.5rem;
    font-weight: 600;
    font-size: 1.2rem;
}

.det-card-body {
    padding: 1.5rem;
}

/* Alert Styles */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}

.alert-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffeaa7;
    color: #856404;
}

/* Table Styles */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.table th,
.table td {
    padding: 12px;
    border-bottom: 1px solid #e1e5eb;
    text-align: left;
}

.table th {
    background-color: var(--light);
    font-weight: 600;
    color: var(--secondary);
}

.table-striped tbody tr:nth-child(odd) {
    background-color: #f8f9fa;
}

/* Footer */
.det-footer {
    background-color: var(--secondary);
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
    text-align: center;
}

/* Login/Signup Specific */
.auth-container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    max-width: 800px;
    margin: 2rem auto;
    overflow: hidden;
}

.auth-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 2rem;
    text-align: center;
}

.auth-body {
    padding: 2rem;
}

/* Dashboard Styles */
.sidebar {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    color: white;
    height: 100vh;
    position: fixed;
    padding-top: 20px;
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 12px 20px;
    margin: 5px 0;
    border-radius: 5px;
    text-decoration: none;
    display: block;
    transition: all 0.3s;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

.main-content {
    margin-left: 280px;
    padding: 20px;
    min-height: 100vh;
}

/* Stats Cards */
.stats-card {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-left: 4px solid var(--primary);
}

.stats-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stats-label {
    color: var(--secondary);
    font-weight: 500;
    font-size: 1.1rem;
}

/* Rating Stars */
.rating-stars {
    color: var(--warning);
    font-size: 1.2rem;
}

/* Password Strength */
.password-strength {
    height: 5px;
    margin-top: 5px;
    border-radius: 5px;
    background: #eee;
}

.password-strength-bar {
    height: 100%;
    border-radius: 5px;
    width: 0%;
    transition: width 0.3s;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }

.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }

.justify-content-center { justify-content: center; }
.align-items-center { align-items: center; }

.w-100 { width: 100%; }

/* Responsive */
@media (max-width: 768px) {
    .det-container {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .auth-container {
        margin: 1rem;
    }
    
    .stats-number {
        font-size: 2rem;
    }
}

/* Form Validation */
.was-validated .form-control:valid {
    border-color: var(--success);
}

.was-validated .form-control:invalid {
    border-color: var(--danger);
}

.invalid-feedback {
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: none;
}

.was-validated .form-control:invalid ~ .invalid-feedback {
    display: block;
}

/* Badge Styles */
.badge {
    display: inline-block;
    padding: 0.35em 0.65em;
    font-size: 0.75em;
    font-weight: 700;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 0.25rem;
}

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

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

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

/* Input Group */
.input-group {
    display: flex;
    align-items: stretch;
}

.input-group-text {
    background-color: #f8f9fa;
    border: 2px solid #e1e5eb;
    border-right: none;
    padding: 0.75rem 1rem;
    border-radius: 8px 0 0 8px;
}

.input-group .form-control {
    border-radius: 0 8px 8px 0;
    border-left: none;
}

/* Simple animations */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}