/* ========================================
   Чувашский Орнамент — Генератор
   ======================================== */

:root {
    /* Цветовая палитра — теплые земляные тона */
    --bg-dark: #1a1612;
    --bg-panel: #0d0b0a;
    --bg-panel-rgb: 13, 11, 10;
    --accent: #E35D47;
    --accent-light: #f0856e;
    --accent-dark: #c44a38;
    --text-primary: #f5f0e8;
    --text-secondary: #a89d8f;
    --text-muted: #6b5f52;
    --border: rgba(227, 93, 71, 0.15);
    --border-active: rgba(227, 93, 71, 0.4);
    
    /* Размеры */
    --panel-width: 340px;
    --header-height: 140px;
    --footer-height: 100px;
    
    /* Тени */
    --shadow-soft: 0 4px 30px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(227, 93, 71, 0.1);
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Jost', sans-serif;
    font-weight: 400;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.5;
}

/* ========================================
   Фон с паттерном
   ======================================== */

.pattern-background {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
        radial-gradient(ellipse at center, rgba(30, 25, 20, 0.3) 0%, var(--bg-dark) 70%),
        var(--bg-dark);
}

#patternSvg {
    width: 100%;
    height: 100%;
    max-width: 1600px;
    max-height: 1600px;
}

/* ========================================
   Панель управления
   ======================================== */

.control-panel {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--panel-width);
    height: 100vh;
    background: linear-gradient(
        180deg,
        rgba(var(--bg-panel-rgb), 0.98) 0%,
        rgba(var(--bg-panel-rgb), 0.95) 100%
    );
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-soft);
}

.control-panel.collapsed {
    transform: translateX(-100%);
}

/* Заголовок панели */
.panel-header {
    padding: 32px 28px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(
        180deg,
        rgba(227, 93, 71, 0.08) 0%,
        transparent 100%
    );
}

.panel-header h1 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-primary);
    letter-spacing: 0.02em;
    margin-bottom: 8px;
}

.panel-header .subtitle {
    font-size: 0.8rem;
    font-weight: 300;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.25em;
}

/* Контейнер контролов с прокруткой */
.controls-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-dark) transparent;
}

.controls-wrapper::-webkit-scrollbar {
    width: 6px;
}

.controls-wrapper::-webkit-scrollbar-track {
    background: transparent;
}

.controls-wrapper::-webkit-scrollbar-thumb {
    background: var(--accent-dark);
    border-radius: 3px;
}

/* Секции контролов */
.control-section {
    padding: 20px 28px;
    border-bottom: 1px solid var(--border);
}

.control-section:last-child {
    border-bottom: none;
}

.section-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 20px;
}

/* Группы контролов */
.control-group {
    margin-bottom: 20px;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group > label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-weight: 400;
}

/* Слайдеры */
.slider-container {
    display: flex;
    align-items: center;
    gap: 14px;
}

input[type="range"] {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(
        90deg,
        var(--accent) 0%,
        var(--accent) var(--progress, 50%),
        rgba(255, 255, 255, 0.1) var(--progress, 50%),
        rgba(255, 255, 255, 0.1) 100%
    );
    border-radius: 2px;
    cursor: pointer;
    transition: background 0.1s;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent);
    border-radius: 50%;
    cursor: grab;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(227, 93, 71, 0.4);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 2px 12px rgba(227, 93, 71, 0.6);
}

input[type="range"]::-webkit-slider-thumb:active {
    cursor: grabbing;
    transform: scale(1.1);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--accent);
    border: none;
    border-radius: 50%;
    cursor: grab;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(227, 93, 71, 0.4);
}

.value-display {
    min-width: 45px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-light);
    text-align: right;
    font-family: 'JetBrains Mono', monospace, 'Jost', sans-serif;
}

/* Слайдер с полем ввода */
.slider-input-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider-input-container input[type="range"] {
    flex: 1;
}

.manual-input {
    width: 60px;
    padding: 6px 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-active);
    border-radius: 6px;
    color: var(--accent-light);
    font-family: 'JetBrains Mono', monospace, 'Jost', sans-serif;
    font-size: 0.8rem;
    text-align: center;
    transition: all 0.2s;
}

.manual-input:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 2px rgba(227, 93, 71, 0.2);
}

.manual-input::-webkit-inner-spin-button,
.manual-input::-webkit-outer-spin-button {
    opacity: 0.5;
}

.manual-input.degree-input {
    width: 55px;
}

.manual-input.degree-input::after {
    content: '°';
}

/* Цветовой пикер */
.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 14px;
}

input[type="color"] {
    width: 48px;
    height: 32px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    padding: 0;
    background: none;
    overflow: hidden;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
}

.color-hex {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace, 'Jost', sans-serif;
    text-transform: uppercase;
}

/* Чекбоксы */
.checkbox-group {
    margin-bottom: 16px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-active);
    border-radius: 4px;
    position: relative;
    transition: all 0.2s;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox-custom::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 6px;
    height: 10px;
    border: solid var(--bg-panel);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform 0.2s;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    transform: rotate(45deg) scale(1);
}

.checkbox-label span:last-child {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Радио кнопки */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
}

.radio-label input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-active);
    border-radius: 50%;
    position: relative;
    transition: all 0.2s;
}

.radio-label input[type="radio"]:checked + .radio-custom {
    border-color: var(--accent);
}

.radio-custom::after {
    content: '';
    position: absolute;
    left: 3px;
    top: 3px;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    transform: scale(0);
    transition: transform 0.2s;
}

.radio-label input[type="radio"]:checked + .radio-custom::after {
    transform: scale(1);
}

.radio-label span:last-child {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Центры */
.center-controls {
    margin-top: 16px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.center-controls.hidden {
    display: none;
}

.center-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-light);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.control-group.compact {
    margin-bottom: 12px;
}

.control-group.compact:last-child {
    margin-bottom: 0;
}

.control-group.compact > label {
    font-size: 0.8rem;
    margin-bottom: 6px;
}

/* Футер панели */
.panel-footer {
    padding: 24px 28px;
    border-top: 1px solid var(--border);
    background: linear-gradient(
        0deg,
        rgba(227, 93, 71, 0.05) 0%,
        transparent 100%
    );
}

.legal-notice {
    margin-top: 12px;
    font-size: 0.62rem;
    line-height: 1.45;
    color: var(--text-muted);
}

.btn-download {
    width: 100%;
    padding: 14px 20px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: var(--text-primary);
    border: none;
    border-radius: 8px;
    font-family: 'Jost', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(227, 93, 71, 0.3);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(227, 93, 71, 0.4);
}

.btn-download:active {
    transform: translateY(0);
}

.stats {
    margin-top: 16px;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
}

/* ========================================
   Кнопка сворачивания
   ======================================== */

.toggle-panel {
    position: fixed;
    left: var(--panel-width);
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 64px;
    background: rgba(var(--bg-panel-rgb), 0.9);
    border: 1px solid var(--border);
    border-left: none;
    border-radius: 0 8px 8px 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 101;
}

.toggle-panel:hover {
    color: var(--accent);
    background: rgba(var(--bg-panel-rgb), 1);
}

.toggle-panel svg {
    transition: transform 0.4s;
}

.control-panel.collapsed + .toggle-panel {
    left: 0;
}

.control-panel.collapsed + .toggle-panel svg {
    transform: rotate(180deg);
}

/* ========================================
   Адаптивность
   ======================================== */

@media (max-width: 768px) {
    :root {
        --panel-width: 300px;
    }
    
    .panel-header h1 {
        font-size: 1.6rem;
    }
    
    .control-section {
        padding: 16px 20px;
    }
}

@media (max-width: 480px) {
    :root {
        --panel-width: 100%;
    }
    
    .control-panel {
        height: auto;
        max-height: 70vh;
        top: auto;
        bottom: 0;
        border-right: none;
        border-top: 1px solid var(--border);
        border-radius: 20px 20px 0 0;
    }
    
    .control-panel.collapsed {
        transform: translateY(calc(100% - 60px));
    }
    
    .toggle-panel {
        display: none;
    }
    
    .panel-header {
        padding: 20px;
        cursor: pointer;
    }
}

/* ========================================
   Анимации
   ======================================== */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

.control-section {
    animation: slideUp 0.5s ease backwards;
}

.control-section:nth-child(1) { animation-delay: 0.1s; }
.control-section:nth-child(2) { animation-delay: 0.2s; }
.control-section:nth-child(3) { animation-delay: 0.3s; }
.control-section:nth-child(4) { animation-delay: 0.4s; }

#patternSvg {
    animation: fadeIn 1s ease;
}