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

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-card: #ffffff;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --accent: #007aff;
    --accent-light: #e3f2fd;
    --accent-secondary: #5856d6;
    --border: #e5e5e7;
    --success: #34c759;
    --warning: #ff9500;
    --danger: #ff3b30;
    --shadow: rgba(0, 0, 0, 0.08);
    --tg-theme-bg: var(--bg-primary);
}

[data-theme="dark"] {
    --bg-primary: #1c1c1e;
    --bg-secondary: #2c2c2e;
    --bg-card: #2c2c2e;
    --text-primary: #ffffff;
    --text-secondary: #8e8e93;
    --accent: #0a84ff;
    --accent-light: #1c3a5e;
    --accent-secondary: #5e5ce6;
    --border: #38383a;
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
}

.app {
    max-width: 100%;
    padding: 12px 16px;
    padding-bottom: 120px;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.sync-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    padding: 4px 10px;
    background: var(--bg-secondary);
    border-radius: 12px;
}

.sync-status.syncing {
    color: var(--accent);
}

.sync-status.success {
    color: var(--success);
}

.sync-status.error {
    color: var(--danger);
}

.sync-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.sync-status.syncing .sync-dot {
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.theme-toggle {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-secondary);
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, background 0.2s;
}

.theme-toggle:active {
    transform: scale(0.95);
    background: var(--border);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 8px 0;
}

.month-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-buttons {
    display: flex;
    gap: 8px;
}

.nav-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-secondary);
    border-radius: 12px;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, background 0.2s;
}

.nav-btn:active {
    transform: scale(0.95);
    background: var(--border);
}

.today-btn {
    width: auto;
    padding: 0 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
}

.weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    margin-bottom: 6px;
    padding: 0 2px;
}

.weekdays div {
    text-align: center;
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 0;
}

.weekdays div:nth-child(6),
.weekdays div:nth-child(7) {
    color: var(--danger);
    opacity: 0.7;
}

.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 3px;
    padding: 0 2px;
}

.day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 8px 2px 4px;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    background: var(--bg-card);
    border: 1px solid transparent;
}

.day:active {
    transform: scale(0.95);
}

.day.other-month {
    opacity: 0.25;
    background: transparent;
}

.day.today {
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.day.today .day-number {
    color: white;
}

.day.selected:not(.today) {
    background: var(--accent-light);
    border-color: var(--accent);
}

.day.has-events:not(.today):not(.selected) {
    background: var(--bg-secondary);
}

.day-number {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 3px;
}

.event-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    width: 100%;
}

.event-count {
    font-size: 9px;
    font-weight: 700;
    color: var(--accent);
    background: var(--accent-light);
    padding: 1px 5px;
    border-radius: 6px;
    min-width: 16px;
    text-align: center;
}

.day.today .event-count {
    background: rgba(255, 255, 255, 0.3);
    color: white;
}

.stats-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 16px;
    padding: 0 2px;
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: 14px;
    padding: 12px;
    text-align: center;
}

.stat-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: 10px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.upcoming-section {
    margin-top: 20px;
}

.section-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
    padding-left: 4px;
}

.upcoming-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.upcoming-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: var(--bg-secondary);
    border-radius: 14px;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}

.upcoming-item:active {
    transform: scale(0.98);
    background: var(--border);
}

.upcoming-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 44px;
    padding: 6px;
    background: var(--accent);
    border-radius: 10px;
    color: white;
}

.upcoming-date-day {
    font-size: 18px;
    font-weight: 700;
    line-height: 1;
}

.upcoming-date-month {
    font-size: 9px;
    text-transform: uppercase;
    opacity: 0.9;
}

.upcoming-info {
    flex: 1;
    min-width: 0;
}

.upcoming-title {
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.upcoming-time {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.upcoming-badges {
    display: flex;
    gap: 4px;
    margin-top: 4px;
}

.badge {
    font-size: 9px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.badge-note {
    background: rgba(52, 199, 89, 0.15);
    color: var(--success);
}

.badge-reminder {
    background: rgba(255, 149, 0, 0.15);
    color: var(--warning);
}

.events-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-radius: 24px 24px 0 0;
    box-shadow: 0 -8px 30px var(--shadow);
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 55vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    z-index: 50;
}

.events-panel.open {
    transform: translateY(0);
}

.panel-handle {
    width: 36px;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    margin: 10px auto;
}

.events-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 20px 16px;
}

.events-header-info {
    display: flex;
    flex-direction: column;
}

.events-header-date {
    font-size: 18px;
    font-weight: 700;
}

.events-header-count {
    font-size: 12px;
    color: var(--text-secondary);
}

.close-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-secondary);
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s;
}

.close-btn:active {
    transform: scale(0.9);
}

.events-list {
    flex: 1;
    overflow-y: auto;
    padding: 0 16px 20px;
    -webkit-overflow-scrolling: touch;
}

.event-item {
    padding: 14px 16px;
    background: var(--bg-secondary);
    border-radius: 14px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
    border-left: 4px solid var(--accent);
}

.event-item:active {
    transform: scale(0.98);
    background: var(--border);
}

.event-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 4px;
}

.event-item-title {
    font-size: 15px;
    font-weight: 600;
    flex: 1;
    padding-right: 8px;
}

.event-item-time {
    font-size: 12px;
    color: var(--accent);
    font-weight: 600;
    white-space: nowrap;
}

.event-item-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.event-item-indicators {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.indicator {
    font-size: 10px;
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 600;
}

.indicator-notes {
    background: rgba(52, 199, 89, 0.15);
    color: var(--success);
}

.indicator-reminders {
    background: rgba(255, 149, 0, 0.15);
    color: var(--warning);
}

.no-events {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px 20px;
}

.no-events-icon {
    font-size: 40px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.no-events-text {
    font-size: 14px;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: flex-end;
    z-index: 100;
    backdrop-filter: blur(4px);
}

.modal.open {
    display: flex;
}

.modal-content {
    background: var(--bg-primary);
    width: 100%;
    max-height: 90vh;
    border-radius: 24px 24px 0 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 20px;
    border-bottom: 1px solid var(--border);
    gap: 12px;
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 700;
    flex: 1;
    line-height: 1.3;
}

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    -webkit-overflow-scrolling: touch;
}

.event-info-card {
    background: var(--bg-secondary);
    border-radius: 14px;
    padding: 16px;
    margin-bottom: 20px;
}

.event-time-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.event-time-icon {
    width: 36px;
    height: 36px;
    background: var(--accent);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.event-time-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--accent);
}

.event-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

.event-creator {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.section {
    margin-bottom: 24px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.section h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-count {
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 2px 8px;
    border-radius: 10px;
}

.notes-list, .reminders-list {
    margin-bottom: 12px;
}

.note-item {
    background: var(--bg-secondary);
    padding: 14px;
    border-radius: 12px;
    margin-bottom: 8px;
    position: relative;
    border-left: 3px solid var(--success);
}

.note-content {
    font-size: 14px;
    line-height: 1.5;
    padding-right: 24px;
}

.note-date {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.note-delete {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(255, 59, 48, 0.1);
    color: var(--danger);
    cursor: pointer;
    font-size: 14px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.reminder-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-secondary);
    padding: 12px 14px;
    border-radius: 12px;
    margin-bottom: 8px;
    border-left: 3px solid var(--warning);
}

.reminder-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.reminder-icon {
    font-size: 16px;
}

.reminder-time {
    font-size: 14px;
    font-weight: 500;
}

.reminder-delete {
    width: 28px;
    height: 28px;
    border: none;
    background: rgba(255, 59, 48, 0.1);
    color: var(--danger);
    cursor: pointer;
    font-size: 14px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.note-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#noteInput {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    resize: none;
    font-family: inherit;
    font-size: 14px;
    min-height: 80px;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

#noteInput:focus {
    outline: none;
    border-color: var(--accent);
}

.reminder-form {
    display: flex;
    gap: 10px;
}

.reminder-form select {
    flex: 1;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 14px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2386868b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.btn:active {
    transform: scale(0.97);
    opacity: 0.9;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    color: white;
}

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

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: 12px;
    margin-bottom: 12px;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (min-width: 480px) {
    .app {
        max-width: 420px;
        margin: 0 auto;
    }
    
    .day {
        padding: 10px 4px 6px;
    }
    
    .day-number {
        font-size: 16px;
    }
}