/* Discovery Church LMS - Material Design Black & White Theme */
:root {
    --primary: #000000;
    --secondary: #ffffff;
    --accent: #333333;
    --light-gray: #f5f5f5;
    --border: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.2);
}

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

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--light-gray);
    color: var(--primary);
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Auth Pages */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-gray);
}

.auth-card {
    background: var(--secondary);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow);
    width: 100%;
    max-width: 450px;
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    font-size: 28px;
    margin-bottom: 10px;
    color: var(--primary);
}

.auth-header p {
    color: var(--accent);
    font-size: 14px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.1s;
    text-decoration: none;
    text-align: center;
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: var(--primary);
    color: var(--secondary);
    width: 100%;
}

.btn-primary:hover {
    background: var(--accent);
}

.btn-secondary {
    background: var(--secondary);
    color: var(--primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--light-gray);
}

/* Alert Messages */
.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Links */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--accent);
    font-size: 14px;
}

.link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.link:hover {
    text-decoration: underline;
}

.divider {
    margin: 20px 0;
    text-align: center;
    position: relative;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border);
}

.divider span {
    background: var(--secondary);
    padding: 0 10px;
    position: relative;
    color: var(--accent);
    font-size: 14px;
}

/* Dashboard */
.dashboard-header {
    background: var(--primary);
    color: var(--secondary);
    padding: 20px;
    margin-bottom: 30px;
}

.dashboard-header h1 {
    font-size: 24px;
}

.card {
    background: var(--secondary);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px var(--shadow);
    margin-bottom: 20px;
}

.card-title {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--primary);
}

/* Navigation */
.nav {
    background: var(--primary);
    padding: 0;
    margin-bottom: 20px;
}

.nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.nav li {
    margin: 0;
}

.nav a {
    display: block;
    padding: 15px 20px;
    color: var(--secondary);
    text-decoration: none;
    transition: background-color 0.3s;
}

.nav a:hover,
.nav a.active {
    background: var(--accent);
}

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
    background: var(--secondary);
    border-radius: 8px;
    overflow: hidden;
}

th {
    background: var(--primary);
    color: var(--secondary);
    padding: 12px;
    text-align: left;
    font-weight: 500;
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background: var(--light-gray);
}

/* Responsive */
@media (max-width: 768px) {
    .auth-card {
        padding: 30px 20px;
    }
    
    .container {
        padding: 15px;
    }
}