:root {
    --bg-primary: #000000;
    --bg-secondary: rgba(28, 28, 30, 0.7);
    --bg-tertiary: rgba(44, 44, 46, 0.6);
    --text-primary: #ffffff;
    --text-secondary: rgba(235, 235, 245, 0.6);
    --accent: #0a84ff;
    --accent-hover: #0051d5;
    --success: #30d158;
    --warning: #ff9f0a;
    --separator: rgba(84, 84, 88, 0.4);
    --shadow: rgba(0, 0, 0, 0.5);
    --blur: blur(60px);
}

/* Light mode */
@media (prefers-color-scheme: light) {
    :root {
        --bg-primary: #f5f5f7;
        --bg-secondary: rgba(255, 255, 255, 0.7);
        --bg-tertiary: rgba(242, 242, 247, 0.8);
        --text-primary: #1d1d1f;
        --text-secondary: rgba(60, 60, 67, 0.6);
        --accent: #007aff;
        --accent-hover: #0051d5;
        --success: #34c759;
        --warning: #ff9500;
        --separator: rgba(60, 60, 67, 0.12);
        --shadow: rgba(0, 0, 0, 0.1);
    }
    
    body {
        background: #f5f5f7;
        background-image: 
            radial-gradient(at 20% 30%, rgba(0, 122, 255, 0.08) 0, transparent 50%),
            radial-gradient(at 80% 70%, rgba(52, 199, 89, 0.06) 0, transparent 50%);
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    background: #000000;
    background-image: 
        radial-gradient(at 20% 30%, rgba(10, 132, 255, 0.15) 0, transparent 50%),
        radial-gradient(at 80% 70%, rgba(48, 209, 88, 0.1) 0, transparent 50%),
        radial-gradient(at 50% 50%, rgba(255, 159, 10, 0.05) 0, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 16px;
}

/* Header */
header {
    background: rgba(28, 28, 30, 0.7);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 0.5px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 24px 28px;
    margin-bottom: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 4px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: 12px;
}

#current-time {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--accent);
    margin-top: 8px;
    letter-spacing: -0.02em;
}

/* Grid Layout */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 12px;
}

/* Cards */
.card {
    background: rgba(28, 28, 30, 0.7);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 0.5px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 18px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.card h2 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 0.5px solid rgba(255, 255, 255, 0.08);
    letter-spacing: -0.02em;
}

.card.focus {
    grid-column: span 2;
    background: rgba(28, 28, 30, 0.8);
}

/* Date */
.date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

/* Events & Emails */
#today-events, #week-events, #recent-emails {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.event-item, .email-item {
    background: rgba(44, 44, 46, 0.6);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    padding: 12px 14px;
    border-radius: 14px;
    border: 0.5px solid rgba(255, 255, 255, 0.08);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.event-item:hover, .email-item:hover {
    background: rgba(44, 44, 46, 0.8);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateX(2px);
}

.event-time, .email-from {
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 4px;
    letter-spacing: -0.01em;
}

.event-title, .email-subject {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 3px;
    font-size: 0.95rem;
}

.event-location, .email-preview {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 400;
}

/* Tasks */
.task-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: rgba(44, 44, 46, 0.6);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border-radius: 12px;
    border: 0.5px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 6px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.task-item:hover {
    background: rgba(44, 44, 46, 0.8);
    border-color: rgba(255, 255, 255, 0.15);
}

.task-item input[type="checkbox"] {
    width: 22px;
    height: 22px;
    cursor: pointer;
    accent-color: var(--success);
}

.task-item label {
    flex: 1;
    cursor: pointer;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

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

.add-task {
    width: 100%;
    padding: 12px;
    margin-top: 8px;
    background: rgba(44, 44, 46, 0.6);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    color: var(--accent);
    border: 0.5px solid rgba(10, 132, 255, 0.3);
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.add-task:hover {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
    box-shadow: 0 4px 16px rgba(10, 132, 255, 0.4);
}

/* Stats */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.stat {
    text-align: center;
    padding: 16px 12px;
    background: rgba(44, 44, 46, 0.6);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border-radius: 14px;
    border: 0.5px solid rgba(255, 255, 255, 0.08);
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 2px;
    letter-spacing: -0.03em;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* Topics */
.topic-item {
    display: flex;
    gap: 12px;
    padding: 10px 12px;
    background: rgba(44, 44, 46, 0.6);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border-radius: 12px;
    border: 0.5px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 6px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.topic-item:hover {
    background: rgba(44, 44, 46, 0.8);
    border-color: rgba(255, 255, 255, 0.15);
}

.topic-date {
    color: var(--text-secondary);
    font-size: 0.8rem;
    min-width: 60px;
    font-weight: 600;
}

.topic-text {
    flex: 1;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 20px;
    padding: 16px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

#last-update {
    color: var(--accent);
    font-weight: 600;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.empty-state::before {
    content: "✨";
    display: block;
    font-size: 2.5rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 8px;
    }
    
    .container {
        padding: 8px;
    }
    
    .grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .card {
        padding: 14px;
    }
    
    .card.focus {
        grid-column: span 1;
    }
    
    header {
        padding: 18px 20px;
        margin-bottom: 12px;
    }
    
    header h1 {
        font-size: 1.6rem;
    }
    
    .subtitle {
        font-size: 0.9rem;
    }
    
    #current-time {
        font-size: 1.05rem;
    }
    
    .card h2 {
        font-size: 1rem;
    }
    
    .stat-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .event-item, .email-item, .task-item {
        padding: 10px 12px;
    }
    
    .event-time, .email-from {
        font-size: 0.8rem;
    }
    
    .event-title, .email-subject {
        font-size: 0.9rem;
    }
}

/* Very small screens */
@media (max-width: 400px) {
    header h1 {
        font-size: 1.4rem;
    }
    
    .card {
        padding: 12px;
    }
    
    #current-time {
        font-size: 0.95rem;
    }
}

/* Smooth animations */
@media (prefers-reduced-motion: no-preference) {
    * {
        transition-duration: 0.2s;
    }
}