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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 30px;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.progress-section {
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: 8px;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.progress-bar {
    height: 20px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: #4ade80;
    width: 0%;
    transition: width 0.3s ease;
}

.checklist-sections {
    padding: 30px;
}

.section {
    margin-bottom: 40px;
}

.section h2 {
    font-size: 1.5rem;
    color: #1f2937;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section h2 i {
    color: #667eea;
}

.gilman-section {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    padding: 20px;
    border-radius: 8px;
    border-left: 5px solid #f59e0b;
}

.gilman-info {
    background: white;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 15px;
    border-left: 3px solid #f59e0b;
}

.gilman-info strong {
    color: #f59e0b;
}

.task-list {
    list-style: none;
}

.task-item {
    display: flex;
    align-items: center;
    padding: 15px;
    background: #f9fafb;
    border-radius: 6px;
    margin-bottom: 10px;
    transition: all 0.2s ease;
}

.task-item:hover {
    background: #f3f4f6;
    transform: translateX(5px);
}

.task-item.completed {
    background: #d1fae5;
}

.task-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 15px;
    cursor: pointer;
    accent-color: #667eea;
}

.task-item label {
    cursor: pointer;
    flex: 1;
    user-select: none;
}

.task-item.completed label {
    text-decoration: line-through;
    color: #6b7280;
}

.actions {
    padding: 0 30px 30px;
    text-align: center;
}

button {
    padding: 12px 24px;
    font-size: 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-secondary {
    background: #e5e7eb;
    color: #1f2937;
}

.btn-secondary:hover {
    background: #d1d5db;
}

footer {
    background: #f9fafb;
    padding: 20px;
    text-align: center;
    color: #6b7280;
    font-size: 0.9rem;
}

footer a {
    color: #667eea;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    h1 {
        font-size: 2rem;
    }

    header {
        padding: 30px 20px;
    }

    .checklist-sections {
        padding: 20px;
    }

    .task-item {
        padding: 12px;
    }
}