/* static/css/style.css */
:root {
    --primary-color: #4a90e2;
    --secondary-color: #f5f5f5;
    --text-color: #333;
    --error-color: #e74c3c;
    --success-color: #2ecc71;
}

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    background-color: #f9f9f9;
}

.navbar {
    background-color: var(--primary-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-links a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    margin-left: 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav-links a:hover {
    background-color: rgba(255,255,255,0.1);
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
    background-color: var(--error-color);
    color: white;
}

.card {
    background-color: white;
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: #357abd;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.progress-card {
    background-color: white;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.progress-status {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
}

.progress-status.not_started {
    background-color: #f1f1f1;
    color: #666;
}

.progress-status.in_progress {
    background-color: #fff3cd;
    color: #856404;
}

.progress-status.completed {
    background-color: #d4edda;
    color: #155724;
}

.progress-bar {
    height: 8px;
    background-color: #f1f1f1;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.progress-actions {
    margin-top: 1rem;
    display: flex;
    gap: 0.5rem;
}

.material-card {
    background-color: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.material-info {
    display: flex;
    gap: 1rem;
    margin: 1rem 0;
    color: #666;
    font-size: 0.875rem;
}

.material-type {
    background-color: #e9ecef;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.material-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.login-container {
    max-width: 400px;
    margin: 2rem auto;
}

.text-center {
    text-align: center;
}

.btn-block {
    width: 100%;
}

.section {
    margin: 2rem 0;
}

.progress-item, .material-item {
    background-color: white;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.875rem;
    margin: 0.5rem 0;
}

.status-badge.not_started {
    background-color: #f1f1f1;
    color: #666;
}

.status-badge.in_progress {
    background-color: #fff3cd;
    color: #856404;
}

.status-badge.completed {
    background-color: #d4edda;
    color: #155724;
}

.last-accessed {
    color: #666;
    font-size: 0.875rem;
}