:root {
    --bg-color: #0d0f12;
    --panel-bg: #161a22;
    --accent-color: #4a90e2;
    --text-color: #e2e8f0;
    --text-muted: #718096;
    --expansion-color: #2ecc71;
    --compression-color: #e74c3c;
    --border-color: #2d3748;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Переключатель режимов */
.mode-switcher {
    display: flex;
    background: var(--panel-bg);
    padding: 6px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
    align-self: center;
    margin-bottom: 10px;
}

.mode-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mode-btn.active {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

/* Главная сетка */
.main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 900px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
}

.panel {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

h2 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

textarea {
    width: 100%;
    height: 120px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-color);
    padding: 14px;
    font-size: 14px;
    resize: none;
    outline: none;
    transition: border 0.3s;
}

textarea:focus {
    border-color: var(--accent-color);
}

/* Список точек */
.points-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 350px;
    overflow-y: auto;
    padding-right: 5px;
}

.point-item {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.point-row-top {
    display: flex;
    gap: 10px;
}

.input-year {
    width: 90px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: white;
    padding: 6px 10px;
    text-align: center;
}

.input-desc {
    flex: 1;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: white;
    padding: 6px 10px;
}

.btn-delete {
    background: transparent;
    border: none;
    color: #ff4d4d;
    cursor: pointer;
    font-size: 18px;
}

/* Слайдеры */
.amplitude-container {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.amplitude-labels {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    font-weight: 600;
}

.label-comp { color: var(--compression-color); }
.label-exp { color: var(--expansion-color); }

.range-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(to right, var(--compression-color), #555, var(--expansion-color));
    outline: none;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
}

.amplitude-value {
    text-align: center;
    font-size: 12px;
    font-weight: bold;
}

/* Кнопки */
.btn-action {
    background: #232834;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
}

.btn-action:hover {
    background: #2d3445;
    border-color: #4a90e2;
}

.btn-submit {
    background: var(--accent-color);
    color: white;
    border: none;
}

/* Табы */
.tabs-header {
    display: flex;
    gap: 5px;
    overflow-x: auto;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.tab-link {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 6px 12px;
    font-size: 13px;
    cursor: pointer;
    white-space: nowrap;
    border-radius: 6px;
}

.tab-link.active {
    background: #232834;
    color: var(--accent-color);
    font-weight: 600;
}

.tabs-content {
    font-size: 14px;
    line-height: 1.6;
    color: #cbd5e0;
    min-height: 200px;
    margin-top: 15px;
}

.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* Чекеры */
.symptom-checkers {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.check-tag {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.check-tag.selected {
    border-color: var(--accent-color);
    background: rgba(74, 144, 226, 0.1);
    color: var(--accent-color);
}

.hidden { display: none !important; }