:root {
    /* Everforest theme as default - will be overridden by theme files */
    --bg-primary: #2d353b;
    --bg-secondary: #343f44;
    --bg-tertiary: #3d484d;
    --text-primary: #d3c6aa;
    --text-secondary: #859289;
    --accent-primary: #a7c080;
    --accent-secondary: #d699b6;
    --border-color: #475258;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Navigation */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.version {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-left: 0.5rem;
}

/* Real-time Clock */
.clock-container {
    text-align: center;
}

.real-time-clock {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#currentTime {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--accent-primary);
}

#currentDate {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.nav-menu {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
}

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

.user-menu {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--bg-primary);
    border: 2px solid var(--accent-primary);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem;
    min-width: 150px;
    display: none;
    box-shadow: var(--shadow);
}

.user-menu:hover .user-dropdown {
    display: block;
}

.user-dropdown a {
    display: block;
    padding: 0.5rem;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 4px;
}

.user-dropdown a:hover {
    background: var(--bg-tertiary);
}

/* Main Content */
.main-content {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.page-header {
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 2rem;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.page-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Dashboard Grid */
.dashboard-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

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

.stat-icon {
    font-size: 2rem;
}

.stat-info h3 {
    font-size: 1.8rem;
    color: var(--accent-primary);
    margin-bottom: 0.2rem;
}

.stat-info p {
    color: var(--text-secondary);
}

/* Action Grid */
.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.action-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.action-card:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    border-color: var(--accent-primary);
}

.action-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.action-card h4 {
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.action-card p {
    color: var(--text-secondary);
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.content-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.content-card h3 {
    color: var(--accent-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

/* Activity List */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background 0.3s ease;
}

.activity-item:hover {
    background: var(--bg-tertiary);
}

.activity-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--bg-primary);
    flex-shrink: 0;
}

.activity-details {
    flex: 1;
}

.activity-meta {
    color: var(--text-secondary);
    font-style: italic;
}

.activity-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.2rem;
}

/* Deadlines List */
.deadlines-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.deadline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
    border-left: 4px solid var(--accent-primary);
}

.deadline-date.urgent {
    color: #e67e80;
    font-weight: bold;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-block {
    width: 100%;
}

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

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-icon {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    border-radius: 4px;
    font-size: 1.2rem;
}

.btn-icon:hover {
    background: var(--bg-tertiary);
}

.btn-danger {
    background: #e67e80;
    color: var(--bg-primary);
}

.btn-danger:hover {
    background: #d699b6;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.alert-error {
    background: #e67e80;
    color: #2d353b;
    border: 1px solid #d699b6;
}

.alert-success {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border: 1px solid var(--accent-primary);
}

/* Text Utilities */
.text-muted {
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 1rem 2rem;
    margin-top: 3rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    gap: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--accent-primary);
}

/* Theme Selector */
.theme-selector select {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}