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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* Login Page Styles */
.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.login-form h1 {
    text-align: center;
    color: #333;
    margin-bottom: 0.5rem;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.form-tabs {
    display: flex;
    margin-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.tab-btn {
    flex: 1;
    padding: 1rem;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1rem;
    color: #666;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.auth-form {
    display: block;
}

.auth-form.hidden {
    display: none;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.form-group small {
    color: #666;
    font-size: 0.8rem;
}

/* Button Styles */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #667eea;
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background: #5a6fd8;
}

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

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

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

/* Message Styles */
.message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 5px;
    text-align: center;
    display: none;
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* Main App Styles */
.header {
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    color: #667eea;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav {
    display: flex;
    gap: 1rem;
}

.nav-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    background: #f0f0f0;
}

.nav-btn.active {
    background: #667eea;
    color: white;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-header h2 {
    color: #333;
    font-size: 1.8rem;
}

.project-select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

/* Grid and List Styles */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-2px);
}

.project-card h3 {
    color: #333;
    margin-bottom: 0.5rem;
}

.project-card p {
    color: #666;
    margin-bottom: 1rem;
}

.project-actions {
    display: flex;
    gap: 0.5rem;
}

.items-list {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.item {
    padding: 1rem;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item:last-child {
    border-bottom: none;
}

.item-info h4 {
    color: #333;
    margin-bottom: 0.25rem;
}

.item-info p {
    color: #666;
    font-size: 0.9rem;
}

.item-actions {
    display: flex;
    gap: 0.5rem;
}

.storyboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.storyboard-panel {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.panel-image {
    width: 100%;
    height: 150px;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
}

.panel-content {
    padding: 1rem;
}

.panel-content h4 {
    margin-bottom: 0.5rem;
}

.panel-content p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .main-content {
        padding: 1rem;
    }
}