:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #141b3a;
    --bg-card: #1a2341;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --accent: #4c9aff;
    --accent-hover: #6bb1ff;
    --success: #36b37e;
    --warning: #ffab00;
    --border: #2d3748;
    --shadow: rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-card) 100%);
    border-radius: 16px;
    border: 1px solid var(--border);
}

header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

#current-time {
    font-size: 2rem;
    color: var(--accent);
    font-weight: 600;
    margin-top: 20px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 6px var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 12px var(--shadow);
}

.card h2 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border);
    padding-bottom: 10px;
}

.card.focus {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--bg-card) 0%, #1e2a4a 100%);
}

.date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

#today-events, #week-events, #recent-emails {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.event-item, .email-item {
    background: var(--bg-secondary);
    padding: 16px;
    border-radius: 8px;
    border-left: 4px solid var(--accent);
    transition: background 0.2s;
}

.event-item:hover, .email-item:hover {
    background: #1f2937;
}

.event-time, .email-from {
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.event-title, .email-subject {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 4px;
}

.event-location, .email-preview {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.task-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 8px;
    transition: background 0.2s;
}

.task-item:hover {
    background: #1f2937;
}

.task-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--success);
}

.task-item label {
    flex: 1;
    cursor: pointer;
    color: var(--text-primary);
}

.task-item input[type="checkbox"]:checked + label {
    text-decoration: line-through;
    color: var(--text-secondary);
}

.add-task {
    width: 100%;
    padding: 12px;
    margin-top: 12px;
    background: var(--bg-secondary);
    color: var(--accent);
    border: 2px dashed var(--border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
}

.add-task:hover {
    background: var(--accent);
    color: var(--text-primary);
    border-color: var(--accent);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.stat {
    text-align: center;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.topic-item {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 8px;
}

.topic-date {
    color: var(--text-secondary);
    font-size: 0.85rem;
    min-width: 80px;
}

.topic-text {
    flex: 1;
    color: var(--text-primary);
}

footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

#last-update {
    color: var(--accent);
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state::before {
    content: "✨";
    display: block;
    font-size: 3rem;
    margin-bottom: 16px;
}

@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
    }
    
    .card.focus {
        grid-column: span 1;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    #current-time {
        font-size: 1.5rem;
    }
    
    .stat-grid {
        grid-template-columns: 1fr;
    }
}