/* General Styles */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --info-color: #17a2b8;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    
    /* New Professional Palette */
    --body-bg: #f7f9fc; /* A subtle, clean off-white */
    --card-bg: #ffffff;
    --text-color: #34495e;
    --border-color: #e9ecef; /* Lighter border for a softer look */
    --shadow-color: rgba(44, 62, 80, 0.07);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--body-bg);
    line-height: 1.6;
    color: var(--text-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.2s ease-in-out;
}

a:hover {
    color: var(--primary-color);
}

/* Login Page Styles (Unchanged) */
.login-body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.login-container { width: 100%; max-width: 400px; }
.login-card { background: white; padding: 2.5rem; border-radius: 1rem; box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15); }
.login-header h2 { color: var(--primary-color); font-weight: 700; }

/* Navigation Styles */
.navbar {
    box-shadow: 0 2px 4px var(--shadow-color);
    background-color: var(--card-bg); /* Match card background for cohesion */
}
.navbar-brand { font-weight: 700; font-size: 1.5rem; }
.dropdown-menu {
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    border-radius: 0.5rem;
}

/* Card Styles - UPDATED */
.card {
    border: 1px solid var(--border-color); /* Subtle border like the example */
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px var(--shadow-color); /* Softer, more modern shadow */
    transition: all 0.2s ease-in-out;
    margin-bottom: 1.5rem;
    background-color: var(--card-bg);
}
.card:hover {
    box-shadow: 0 5px 15px var(--shadow-color);
    transform: translateY(-2px);
}

/* Stat card specific styles */
.stat-card {
    border-radius: 0.75rem; /* Match general card radius */
    background-color: var(--card-bg) !important; /* Override bg-success, etc. */
}
/* Force text color to be dark, overriding 'text-white' class from HTML */
.stat-card .card-title,
.stat-card .card-body,
.stat-card h2,
.stat-card h5 {
    color: var(--text-color) !important;
}

.card-header {
    font-weight: 600;
    padding: 1rem 1.5rem;
    background-color: transparent;
    border-bottom: 1px solid var(--border-color);
}

/* Table Styles - PROFESSIONAL UPDATE */
.table {
    margin-bottom: 0;
}
.table thead th {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background-color: var(--body-bg); /* Match body for seamless look */
    border-bottom: 2px solid var(--border-color);
    border-top: none;
    padding: 1rem;
    font-size: 0.8rem;
    color: #6c757d;
}
.table tbody td {
    padding: 1rem;
    vertical-align: middle;
    border-top: 1px solid var(--border-color);
    color: var(--text-color); /* Ensure text color is correct */
}
.table-striped tbody tr:nth-of-type(odd) td {
    background-color: var(--body-bg); /* Use body background for stripes */
}
.table-hover tbody tr:hover td {   
    background-color: rgba(52, 152, 219, 0.1);
}

/* Button Styles */
.btn {
    border-radius: 0.5rem;
    font-weight: 600;
    padding: 0.6rem 1.2rem;
    transition: all 0.2s ease;
    border: none;
}
.btn-primary { background-color: var(--secondary-color); color: white; }
.btn-success { background-color: var(--success-color); color: white; }
.btn-warning { background-color: var(--warning-color); color: white; }
.btn-danger { background-color: var(--danger-color); color: white; }
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 14px rgba(50, 50, 93, .1), 0 3px 6px rgba(0, 0, 0, .08);
}

/* Form Styles */
.form-control, .form-select {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    transition: all 0.2s ease;
    background-color: var(--card-bg);
    color: var(--text-color);
}
.form-control:focus, .form-select:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}
.form-label { font-weight: 600; margin-bottom: 0.5rem; color: var(--dark-color); }

/* Other Styles */
.alert { border: none; border-radius: 8px; }
.badge { font-weight: 500; padding: 6px 10px; border-radius: 6px; }
footer { padding-top: 3rem; padding-bottom: 3rem; margin-top: auto; }

/* Responsive Styles */
@media (max-width: 768px) {
    h1 { font-size: 1.75rem; }
    .table thead { display: none; }
    .table, .table tbody, .table tr, .table td { display: block; width: 100%; }
    .table tr { margin-bottom: 1rem; border: 1px solid var(--border-color); border-radius: 0.5rem; overflow: hidden; }
    .table td {
        text-align: right;
        padding-left: 50%;
        position: relative;
        border: none;
        border-bottom: 1px solid var(--border-color);
    }
    .table tr td:last-child { border-bottom: none; }
    .table td::before {
        content: attr(data-label);
        position: absolute;
        left: 0.75rem;
        width: 45%;
        padding-right: 1rem;
        text-align: left;
        font-weight: bold;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
    .card:hover, .btn:hover, .stat-card:hover { transform: none; }
}