/* Telegram WebApp Colors */
:root {
    --tg-theme-bg-color: #ffffff;
    --tg-theme-text-color: #000000;
    --tg-theme-hint-color: #999999;
    --tg-theme-link-color: #2481cc;
    --tg-theme-button-color: #2481cc;
    --tg-theme-button-text-color: #ffffff;
    --tg-theme-secondary-bg-color: #f4f4f5;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    padding: 0;
    margin: 0;
}

#app {
    max-width: 600px;
    margin: 0 auto;
    padding-bottom: 20px;
}

/* Tabs */
.tabs {
    display: flex;
    background: var(--tg-theme-secondary-bg-color);
    padding: 8px;
    gap: 8px;
    position: sticky;
    top: 0;
    z-index: 10;
}

.tab {
    flex: 1;
    padding: 12px;
    border: none;
    background: transparent;
    color: var(--tg-theme-hint-color);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s;
}

.tab.active {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
}

.tab-content {
    display: none;
}

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

/* Sections */
.section {
    padding: 20px;
    margin-bottom: 12px;
}

h2 {
    font-size: 24px;
    margin-bottom: 16px;
}

h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--tg-theme-hint-color);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--tg-theme-secondary-bg-color);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--tg-theme-button-color);
}

.stat-label {
    font-size: 13px;
    color: var(--tg-theme-hint-color);
    margin-top: 4px;
}

.subscription-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.subscription-card h3 {
    color: white;
    margin-bottom: 8px;
}

.subscription-card p {
    opacity: 0.9;
}

/* Chart */
#mood-chart {
    width: 100%;
    height: 200px;
    background: var(--tg-theme-secondary-bg-color);
    border-radius: 12px;
}

/* Lists */
#topics-list, #emotions-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.topic-item, .emotion-item {
    background: var(--tg-theme-secondary-bg-color);
    padding: 12px 16px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topic-name, .emotion-name {
    font-weight: 500;
}

.topic-count, .emotion-count {
    color: var(--tg-theme-hint-color);
    font-size: 14px;
}

/* Settings */
.setting-group {
    margin-bottom: 20px;
}

.setting-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--tg-theme-text-color);
}

.small-label {
    font-size: 13px;
    color: var(--tg-theme-hint-color);
    font-weight: 400;
    margin-top: 4px;
    margin-bottom: 8px;
}

.setting-group input[type="text"],
.setting-group input[type="date"],
.setting-group input[type="time"],
.setting-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    background: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    margin-bottom: 8px;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    font-weight: 400;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 12px;
    width: 20px;
    height: 20px;
}

.hint {
    display: block;
    font-size: 13px;
    color: var(--tg-theme-hint-color);
    margin-top: 4px;
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 20px;
}

.btn-primary:active {
    opacity: 0.8;
}

/* Loading */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--tg-theme-hint-color);
}

/* Textarea для topics */
textarea {
    width: 100%;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid #ddd;
    background: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    font-family: inherit;
    font-size: 15px;
    resize: vertical;
}

/* Checkbox groups */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 10px 0;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Small labels */
.small-label {
    font-size: 0.9em;
    color: var(--tg-theme-hint-color);
    margin-top: 10px;
    display: block;
}

/* Hint text */
.hint {
    font-size: 0.85em;
    color: var(--tg-theme-hint-color);
    display: block;
    margin-top: 5px;
}

/* Secondary button */
.btn-secondary {
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    border: 1px solid #ddd;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    margin: 5px 0;
    width: 100%;
    font-size: 15px;
}

.btn-secondary:hover {
    background: #e8e8e8;
}

/* Referral section */
.referral-code-box {
    margin: 10px 0;
}

.referral-stats {
    background: var(--tg-theme-secondary-bg-color);
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    margin: 8px 0;
    font-size: 15px;
}

.stat-row strong {
    color: var(--tg-theme-link-color);
}

.milestone-box {
    margin-top: 15px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #ddd;
    border-radius: 4px;
    overflow: hidden;
    margin-top: 5px;
}

.progress-fill {
    height: 100%;
    background: var(--tg-theme-button-color);
    transition: width 0.3s ease;
}