:root {
    --bg: #ffffff;
    --surface: #ffffff;
    --surface-alt: #f8f9fa;
    --border: #e5e7eb;
    --text: #1a1a2e;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --accent: #2563eb;
    --accent-glow: rgba(37,99,235,0.1);
    --radius: 12px;
    --radius-lg: 16px;
}

* { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; overflow:hidden; font-family:-apple-system,'Inter','SF Pro Display','Segoe UI',sans-serif; background:var(--bg); color:var(--text); -webkit-font-smoothing:antialiased; }
.app { display:flex; flex-direction:column; height:100vh; width:100vw; overflow:hidden; }

/* Хедер */
.header { flex-shrink:0; display:flex; align-items:center; justify-content:space-between; padding:0 32px; height:56px; background:#fff; border-bottom:1px solid var(--border); z-index:20; }
.header-logo { font-size:1.2rem; font-weight:700; color:var(--text); letter-spacing:-0.3px; }
.header-logo span { color:var(--accent); }
.header-user { display:flex; align-items:center; gap:12px; font-size:0.85rem; color:var(--text-secondary); }

/* Кнопки */
.btn-login { background:var(--accent); color:#fff; padding:7px 18px; border-radius:8px; text-decoration:none; font-size:0.82rem; font-weight:600; transition:all 0.2s; }
.btn-login:hover { background:#1d4ed8; }
.btn-logout { background:none; border:1px solid var(--border); color:var(--text-secondary); padding:5px 14px; border-radius:6px; cursor:pointer; font-size:0.78rem; transition:all 0.2s; }
.btn-logout:hover { border-color:#ef4444; color:#ef4444; }

/* Основной контент */
.main { flex:1; display:flex; overflow:hidden; min-height:0; }

/* Панели */
.panel { flex:0 0 20%; max-width:320px; min-width:240px; overflow-y:auto; padding:24px 18px; background:var(--surface); border-right:1px solid var(--border); display:flex; flex-direction:column; gap:18px; }
.panel.right { border-right:none; border-left:1px solid var(--border); flex:1; max-width:none; min-width:360px; }
.panel::-webkit-scrollbar { width:3px; }
.panel::-webkit-scrollbar-thumb { background:#d1d5db; border-radius:3px; }

.panel-section { background:var(--surface-alt); border-radius:var(--radius-lg); padding:18px 16px; border:1px solid var(--border); }
.panel-section-title { font-size:0.68rem; text-transform:uppercase; letter-spacing:0.8px; color:var(--text-tertiary); margin-bottom:14px; font-weight:600; }

/* Поля */
.field { margin-bottom:13px; }
.field:last-child { margin-bottom:0; }
.field label { display:flex; justify-content:space-between; font-size:0.8rem; font-weight:500; margin-bottom:4px; color:var(--text); }
.field label .unit { font-size:0.68rem; color:var(--text-tertiary); font-weight:400; }
.field input[type="range"] { width:100%; height:4px; border-radius:2px; background:#e5e7eb; outline:none; -webkit-appearance:none; margin-top:5px; }
.field input[type="range"]::-webkit-slider-thumb { -webkit-appearance:none; width:18px; height:18px; border-radius:50%; background:#fff; cursor:pointer; border:2px solid var(--accent); box-shadow:0 1px 6px rgba(0,0,0,0.08); }
.field input[type="number"] { width:100%; padding:8px 10px; border:1px solid var(--border); border-radius:8px; font-size:0.85rem; outline:none; background:#fff; color:var(--text); }
.field input[type="number"]:focus { border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-glow); }
.range-labels { display:flex; justify-content:space-between; font-size:0.64rem; color:var(--text-tertiary); margin-top:2px; }

/* Вес */
.weight-indicator { display:flex; align-items:center; gap:8px; margin-top:6px; }
.weight-bar { flex:1; height:4px; border-radius:2px; background:#e5e7eb; overflow:hidden; }
.weight-bar-fill { height:100%; background:var(--accent); border-radius:2px; transition:width 0.3s; }
.weight-indicator span { font-size:0.64rem; color:var(--text-tertiary); min-width:40px; text-align:right; }
.weight-value { text-align:center; margin-top:6px; }
.weight-value strong { color:var(--accent); font-size:0.95rem; }
.fat-info { font-size:0.64rem; color:var(--text-tertiary); margin-left:4px; }
.stat-row { display:flex; justify-content:space-between; font-size:0.7rem; color:var(--text-secondary); margin-top:10px; padding-top:10px; border-top:1px solid var(--border); }
.stat-row span:last-child { color:var(--text); font-weight:500; }

/* Типы */
.type-list { display:flex; flex-direction:column; gap:6px; }
.type-btn { padding:10px 12px; border:1px solid var(--border); border-radius:var(--radius); background:#fff; cursor:pointer; font-size:0.78rem; font-weight:600; color:var(--text); display:flex; justify-content:space-between; align-items:center; width:100%; text-align:left; transition:all 0.2s; }
.type-btn:hover { border-color:var(--accent); background:#eff6ff; }
.type-btn.active { border-color:var(--accent); background:#eff6ff; box-shadow:0 0 0 3px var(--accent-glow); color:var(--accent); }
.type-btn small { font-size:0.6rem; color:var(--text-tertiary); font-weight:400; }
.type-btn.active small { color:var(--accent); }

/* Центр */
.center-col { flex:1; display:flex; flex-direction:column; min-width:0; overflow:hidden; }
.viewport { flex:1; position:relative; background:#fff; cursor:grab; min-height:0; overflow:hidden; }
.viewport:active { cursor:grabbing; }
.viewport canvas { display:block; }

/* Таймлайн */
.timeline-bar { flex-shrink:0; padding:16px 28px 18px; background:#fff; border-top:1px solid var(--border); display:flex; align-items:center; gap:12px; }
.timeline-label { font-size:0.78rem; font-weight:600; color:var(--text); white-space:nowrap; }
.timeline-slider-wrap { flex:1; }
#monthSlider { width:100%; height:5px; border-radius:3px; background:#e5e7eb; outline:none; -webkit-appearance:none; cursor:pointer; }
#monthSlider::-webkit-slider-thumb { -webkit-appearance:none; width:22px; height:22px; border-radius:50%; background:#fff; cursor:pointer; border:2px solid var(--accent); box-shadow:0 2px 10px rgba(37,99,235,0.2); }
.timeline-ticks { display:flex; justify-content:space-between; font-size:0.62rem; color:var(--text-tertiary); margin-top:5px; user-select:none; }
.timeline-ticks span { cursor:pointer; padding:2px 4px; border-radius:3px; }
.timeline-ticks span:hover { color:var(--accent); background:var(--accent-glow); }
.timeline-value { font-size:0.9rem; font-weight:700; color:var(--accent); min-width:65px; text-align:right; white-space:nowrap; }

/* Загрузка */
.loading-overlay { position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; background:rgba(255,255,255,0.85); z-index:10; transition:opacity 0.4s; }
.loading-overlay.hidden { opacity:0; pointer-events:none; }
.spinner-ring { width:32px; height:32px; border:3px solid #e5e7eb; border-top:3px solid var(--accent); border-radius:50%; animation:spin 0.7s linear infinite; margin-bottom:10px; }
@keyframes spin { to { transform:rotate(360deg); } }
.loading-text { font-size:0.8rem; color:var(--text-secondary); font-weight:500; }

/* Футер */
.footer { flex-shrink:0; display:flex; align-items:center; justify-content:center; height:44px; font-size:0.7rem; color:var(--text-tertiary); background:#fff; border-top:1px solid var(--border); gap:20px; }
.footer a { color:var(--text-secondary); text-decoration:none; cursor:pointer; transition:color 0.2s; }
.footer a:hover { color:var(--accent); }

/* Активность */
.activity-list { display:flex; flex-direction:column; gap:5px; }
.activity-item { background:#fff; border:1px solid var(--border); border-radius:var(--radius); padding:7px 10px; cursor:pointer; transition:all 0.2s; }
.activity-item:hover { border-color:var(--accent); background:#f8faff; }
.activity-item.active { border-color:var(--accent); background:#eff6ff; }
.activity-item.locked-item { opacity:0.5; }
.activity-header { display:flex; align-items:center; justify-content:space-between; gap:8px; }
.activity-icon { font-size:1rem; width:22px; text-align:center; }
.activity-name { flex:1; font-size:0.76rem; font-weight:600; color:var(--text); }
.activity-value { font-size:0.7rem; color:var(--accent); font-weight:600; min-width:55px; text-align:right; }
.activity-arrow { font-size:0.55rem; color:var(--text-tertiary); transition:transform 0.2s; }
.activity-item.active .activity-arrow { transform:rotate(180deg); }
.activity-details { display:none; margin-top:7px; padding-top:7px; border-top:1px solid var(--border); }
.activity-item.active .activity-details { display:block; }
.activity-item.locked-item .activity-details { display:none !important; }
.activity-details .field { margin-bottom:7px; }
.activity-details .field label { font-size:0.68rem; }
.activity-details .field input[type="range"] { height:3px; }
.activity-details .field input[type="range"]::-webkit-slider-thumb { width:14px; height:14px; }
.activity-details .range-labels { font-size:0.58rem; }
.activity-total { display:flex; justify-content:space-between; align-items:center; margin-top:8px; padding-top:8px; border-top:1px solid var(--border); font-size:0.7rem; color:var(--text-secondary); }
.activity-total strong { color:var(--accent); font-size:0.82rem; }
.lock-badge { font-size:0.6rem; color:var(--text-tertiary); margin-left:4px; }

/* Динамика */
.weight-dynamics { font-size:0.76rem; color:var(--text-secondary); line-height:1.5; }
.weight-dynamics strong { color:var(--text); }
.weight-dynamics #weightProjected { color:var(--accent); }
.trend { font-size:0.63rem; color:var(--text-tertiary); margin-left:4px; }

/* Модальные окна */
.modal-overlay { position:fixed; inset:0; background:rgba(0,0,0,0.5); backdrop-filter:blur(4px); z-index:100; display:flex; align-items:center; justify-content:center; opacity:0; pointer-events:none; transition:opacity 0.3s; }
.modal-overlay.active { opacity:1; pointer-events:auto; }
.modal { background:#fff; border:1px solid var(--border); border-radius:var(--radius-lg); padding:28px 24px; max-width:420px; width:90%; box-shadow:0 20px 60px rgba(0,0,0,0.15); position:relative; }
.modal-close { position:absolute; top:12px; right:16px; background:none; border:none; color:var(--text-tertiary); font-size:1.4rem; cursor:pointer; }
.modal-close:hover { color:var(--text); }
.modal h2 { font-size:1.1rem; font-weight:700; margin-bottom:14px; color:var(--text); }
.modal p { font-size:0.84rem; color:var(--text-secondary); line-height:1.6; margin-bottom:7px; }
.modal .field input { padding:12px 14px !important; border-radius:12px !important; font-size:0.9rem !important; border:1px solid #d1d5db !important; background:#f9fafb !important; }
.modal .field input:focus { border-color:#2563eb !important; box-shadow:0 0 0 3px rgba(37,99,235,0.1) !important; background:#fff !important; }
.buy-btn { display:block; width:100%; padding:12px; margin-top:14px; background:var(--accent); color:#fff; border:none; border-radius:10px; font-size:0.88rem; font-weight:600; cursor:pointer; transition:background 0.2s; }
.buy-btn:hover { background:#1d4ed8; }
.buy-price { text-align:center; margin-top:10px; font-size:0.7rem; color:var(--text-tertiary); }
.error-msg { background:#fef2f2; color:#ef4444; padding:10px 12px; border-radius:8px; margin-bottom:14px; font-size:0.82rem; display:none; }

@media (max-width:1100px) { .panel { width:260px; padding:14px 10px; } }
@media (max-width:860px) { .panel { display:none; } }

.weight-overlay {
    min-width: 140px; width: 140px;
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px 18px;
    text-align: center;
    z-index: 3;
    pointer-events: none;
}
.weight-overlay-value {
    white-space: nowrap;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
    line-height: 1.2;
}
.weight-overlay-label {
    font-size: 0.7rem;
    color: var(--text-tertiary);
}

.weight-overlay {
    transform: scale(0.8);
    top: 28px;
    right: 32px;
}