/* БАЗОВЫЕ СТИЛИ */
html,
body {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1a1a1a;
    color: #fff;
    -webkit-font-smoothing: antialiased;
}

#viewport {
    width: 100%;
    height: 100%;
    position: relative;
    cursor: grab;
}

#viewport:active {
    cursor: grabbing;
}

#canvas {
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: 0 0;
}

/* ИНТЕРФЕЙС (UI) */
#ui-layer {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 100;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 280px;
    transition: transform 0.3s, opacity 0.3s;
    max-height: 90vh;
    overflow-y: auto;
}

#ui-layer::-webkit-scrollbar,
.checkbox-container::-webkit-scrollbar {
    width: 6px;
}

#ui-layer::-webkit-scrollbar-thumb,
.checkbox-container::-webkit-scrollbar-thumb {
    background: #555;
    border-radius: 3px;
}

.ui-hidden {
    transform: translateX(-150%);
    opacity: 0;
    pointer-events: none;
}

#btn-show-menu {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 90;
    background: rgba(25, 28, 35, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    display: none;
    font-weight: bold;
}

h1 {
    margin: 0 0 15px 0;
    font-size: 20px;
    color: #61dafb;
}

.filter-group {
    margin-bottom: 15px;
}

.filter-group>label,
.filter-header label {
    font-size: 13px;
    color: #aaa;
    font-weight: 600;
    display: block;
    margin-bottom: 5px;
}

.filter-group select,
.filter-group input[type="range"] {
    width: 100%;
    padding: 8px;
    border-radius: 4px;
    background: #1a1a1a;
    color: #fff;
    border: 1px solid #444;
    font-size: 14px;
    cursor: pointer;
    box-sizing: border-box;
}

select option:disabled {
    color: #555;
    background: #1a1a1a;
    font-style: italic;
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
}

.toggle-all {
    color: #61dafb;
    font-size: 12px;
    text-decoration: none;
    cursor: pointer;
}

.toggle-all:hover {
    text-decoration: underline;
}

.checkbox-container {
    max-height: 130px;
    overflow-y: auto;
    background: #1a1a1a;
    border: 1px solid #444;
    border-radius: 4px;
    padding: 6px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    font-size: 13px;
    color: #fff;
    cursor: pointer;
    user-select: none;
    margin: 0;
}

.checkbox-label input {
    margin-right: 8px;
    cursor: pointer;
    accent-color: #61dafb;
}

/* ЭЛЕМЕНТЫ ХОЛСТА */
.composer-block {
    position: absolute;
    border-radius: 4px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: left 0.6s cubic-bezier(0.22, 1, 0.36, 1), top 0.6s cubic-bezier(0.22, 1, 0.36, 1), width 0.4s ease-out, opacity 0.4s, filter 0.3s, background-color 0.5s;
}

.composer-block.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.9);
}

.composer-block.dimmed {
    opacity: 0.15;
    filter: grayscale(80%);
}

.composer-block:hover {
    filter: brightness(1.3);
    z-index: 100 !important;
    border: 2px solid #fff;
    opacity: 1 !important;
}

.composer-name {
    padding: 0 5px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.9);
    pointer-events: none;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    box-sizing: border-box;
}

.era-background {
    position: absolute;
    border-left: none; 
    pointer-events: none;
}

.era-label { 
    display: none; /* Эта строчка полностью скрывает текст */
    position: absolute; 
    top: calc(var(--text-y, 30px) + 40px * var(--inv-scale, 1)); 
    font-size: 32px; 
    font-weight: 900; 
    color: rgba(255,255,255,0.1); 
    text-transform: uppercase; 
    white-space: nowrap; 
    writing-mode: vertical-rl; 
    transform: scale(var(--inv-scale, 1)); 
    transform-origin: top center; 
    pointer-events: none; 
    letter-spacing: 5px; 
}

/* СЕТКА (ZOOM) */
.year-marker {
    position: absolute;
    border-left: calc(1px * var(--inv-scale, 1)) dashed rgba(255, 255, 255, 0.15);
    pointer-events: none;
    z-index: 1;
    display: none;
}

.year-text {
    position: absolute;
    left: 8px;
    transform: scale(var(--inv-scale, 1));
    transform-origin: top left;
    font-weight: bold;
    font-family: monospace;
}

.step-50 {
    border-left-color: rgba(255, 255, 255, 0.05);
}

.step-50 .year-text {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.4);
}

.step-100 {
    border-left-color: rgba(255, 255, 255, 0.15);
}

.step-100 .year-text {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.step-500 {
    border-left-style: solid;
    border-left-color: rgba(255, 255, 255, 0.2);
}

.step-500 .year-text {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
}

.step-1000,
.step-5000,
.step-10000 {
    border-left: calc(2px * var(--inv-scale, 1)) solid rgba(255, 255, 255, 0.4);
}

.step-1000 .year-text,
.step-5000 .year-text,
.step-10000 .year-text {
    font-size: 18px;
    color: #fff;
    text-shadow: 0 0 5px #000;
}

#viewport[data-zoom="50"] .step-50,
#viewport[data-zoom="50"] .step-100,
#viewport[data-zoom="50"] .step-500,
#viewport[data-zoom="50"] .step-1000,
#viewport[data-zoom="50"] .step-5000,
#viewport[data-zoom="50"] .step-10000 {
    display: block;
}

#viewport[data-zoom="100"] .step-100,
#viewport[data-zoom="100"] .step-500,
#viewport[data-zoom="100"] .step-1000,
#viewport[data-zoom="100"] .step-5000,
#viewport[data-zoom="100"] .step-10000 {
    display: block;
}

#viewport[data-zoom="500"] .step-500,
#viewport[data-zoom="500"] .step-1000,
#viewport[data-zoom="500"] .step-5000,
#viewport[data-zoom="500"] .step-10000 {
    display: block;
}

#viewport[data-zoom="1000"] .step-1000,
#viewport[data-zoom="1000"] .step-5000,
#viewport[data-zoom="1000"] .step-10000 {
    display: block;
}

#viewport[data-zoom="5000"] .step-5000,
#viewport[data-zoom="5000"] .step-10000 {
    display: block;
}

#viewport[data-zoom="10000"] .step-10000 {
    display: block;
}

.equator-line {
    position: absolute;
    height: calc(1px * var(--inv-scale, 1));
    background: rgba(255, 255, 255, 0.3);
    pointer-events: none;
    z-index: 1;
    transition: top 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ИНТЕРАКТИВНЫЕ ФАКТЫ И ТУЛТИПЫ */
.fact-marker {
    position: absolute;
    width: 24px;
    height: 24px;
    background: #e91e63;
    color: white;
    border-radius: 50%;
    border: 2px solid #fff;
    transform: translate(-50%, -50%);
    cursor: pointer;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    box-shadow: 0 0 15px rgba(233, 30, 99, 0.9);
    transition: transform 0.3s, background 0.3s, box-shadow 0.3s;
}

.fact-marker:hover {
    transform: translate(-50%, -50%) scale(1.3);
    background: #f06292;
}

.fact-marker.active-fact {
    transform: translate(-50%, -50%) scale(1.6);
    background: #ffeb3b;
    color: #000;
    box-shadow: 0 0 30px #ffeb3b;
    z-index: 1000;
    border: 2px solid #000;
}

#fact-card {
    position: absolute;
    bottom: 85px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(25, 28, 35, 0.95);
    padding: 25px;
    border-radius: 16px;
    border: 1px solid rgba(233, 30, 99, 0.4);
    text-align: center;
    width: 450px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.9), 0 0 30px rgba(233, 30, 99, 0.15);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s, transform 0.4s;
    z-index: 95;
    backdrop-filter: blur(10px);
}

#fact-card.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

#fact-card h3 {
    margin: 0 0 10px 0;
    color: #fff;
    font-size: 22px;
}

#fact-card .fact-year {
    font-size: 14px;
    color: #e91e63;
    font-weight: bold;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 5px;
}

#fact-card p {
    margin: 0;
    font-size: 15px;
    line-height: 1.6;
    color: #ccc;
}

#facts-nav {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(25, 28, 35, 0.95);
    padding: 12px 20px;
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    gap: 15px;
    align-items: center;
    z-index: 100;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

#facts-nav.visible {
    opacity: 1;
    pointer-events: auto;
}

.nav-btn {
    background: #1a1a1a;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    font-size: 13px;
    transition: background 0.2s, transform 0.1s;
}

.nav-btn:hover:not(:disabled) {
    background: #61dafb;
    color: #000;
}

.nav-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#fact-info-display {
    font-size: 14px;
    color: #61dafb;
    font-weight: 600;
    min-width: 140px;
    text-align: center;
}

#btn-jump-composers {
    background: #330f1d;
    border-color: #e91e63;
}

#btn-jump-composers:hover {
    background: #c2185b;
    color: white;
}

#tooltip {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    background: rgba(15, 17, 21, 0.95);
    color: #fff;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
    font-size: 14px;
    line-height: 1.6;
    pointer-events: none;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.1s;
    min-width: 200px;
}

.tooltip-title {
    font-size: 16px;
    font-weight: bold;
    color: #61dafb;
    margin-bottom: 5px;
}

.composer-block.alive {
    border-right: none;
    /* Создаем маску, которая делает правые 15% блока полупрозрачными */
    -webkit-mask-image: linear-gradient(to right, rgba(0,0,0,1) 85%, rgba(0,0,0,0) 100%);
    mask-image: linear-gradient(to right, rgba(0,0,0,1) 85%, rgba(0,0,0,0) 100%);
}

.current-time-line { 
    position: absolute; 
    width: 2px; 
    background-color: #ff3333; 
    box-shadow: 0 0 10px rgba(255, 51, 51, 0.8); 
    z-index: 50; 
    pointer-events: none; 
}

/* СТИЛИ ДЛЯ ПОДКАТЕГОРИЙ И СВОРАЧИВАНИЯ */
.sub-category { margin-left: 24px !important; position: relative; opacity: 0.9; }
.sub-category::after { content: ''; position: absolute; left: -19px; width: 8px; height: 1px; background: rgba(255,255,255,0.2); }

/* Стили для стрелочки */
.collapse-toggle { 
    display: inline-block; width: 16px; font-size: 10px; color: #888; 
    cursor: pointer; text-align: center; margin-right: 6px; 
    user-select: none; transition: color 0.2s; 
}
.collapse-toggle:hover { color: #fff; }
.collapsed-group { display: none !important; }

#ctrl-era { 
    max-height: none; 
    overflow-y: visible; 
}

#btn-close-menu {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: #888;
    font-size: 16px;
    cursor: pointer;
    transition: color 0.2s, transform 0.2s;
    padding: 0;
}
#btn-close-menu:hover {
    color: #ff3333; /* При наведении становится красным */
    transform: scale(1.2);
}

/* =========================================
   КНОПКИ СОЦСЕТЕЙ В ПРАВОМ НИЖНЕМ УГЛУ
   ========================================= */
#social-links {
    position: absolute;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 100;
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    background: rgba(25, 28, 35, 0.95);
    color: #fff;
    text-decoration: none;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    backdrop-filter: blur(10px);
}

/* Эффект выезжания влево при наведении */
.social-btn:hover {
    transform: translateX(-5px) scale(1.05);
}

/* Фирменные цвета при наведении */
.social-btn.ozon:hover { background: #005bff; color: #fff; border-color: #005bff; }
.social-btn.boosty:hover { background: #f15f2c; color: #fff; border-color: #f15f2c; }
.social-btn.telegram:hover { background: #2AABEE; color: #fff; border-color: #2AABEE; }
.social-btn.instagram:hover { background: #E1306C; color: #fff; border-color: #E1306C; }
.social-btn.youtube:hover { background: #FF0000; color: #fff; border-color: #FF0000; }
.social-btn.donate:hover { background: #FFDD00; color: #000; border-color: #FFDD00; }