/* ==========================================================================
   Калькулятор загрузки кабельных барабанов
   Industrial Glassmorphism CSS
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Переменные и базовые настройки
   -------------------------------------------------------------------------- */
:root {
    /* Цветовая палитра - Industrial Glassmorphism */
    --color-bg-primary: #0f1419;
    --color-bg-secondary: #1a232e;
    --color-bg-tertiary: #24303f;
    
    --color-accent-blue: #1e88e5;
    --color-accent-blue-dark: #1565c0;
    --color-accent-orange: #ff6d00;
    --color-accent-green: #43a047;
    --color-accent-red: #e53935;
    
    --color-graphite: #263238;
    --color-deep-blue: #0d47a1;
    
    --color-text-primary: #ffffff;
    --color-text-secondary: #b0bec5;
    --color-text-muted: #78909c;
    
    /* Glassmorphism эффекты */
    --glass-bg: rgba(30, 40, 50, 0.75);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --glass-blur: blur(12px);
    
    /* Размеры и отступы */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;
    
    /* Переходы */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Шрифты */
    --font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
}

/* --------------------------------------------------------------------------
   Базовый сброс и настройки
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 50%, var(--color-bg-tertiary) 100%);
    color: var(--color-text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* --------------------------------------------------------------------------
   Основной контейнер приложения
   -------------------------------------------------------------------------- */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: var(--spacing-md);
    gap: var(--spacing-lg);
    max-width: 1920px;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Заголовок приложения
   -------------------------------------------------------------------------- */
.app-header {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    box-shadow: var(--glass-shadow);
    animation: slideDown 0.6s ease-out;
}

.header-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    width: 48px;
    height: 48px;
    color: var(--color-accent-orange);
    animation: rotateIn 0.8s ease-out;
}

.logo h1 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.5px;
}

.subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    padding-left: calc(48px + var(--spacing-md));
}

/* --------------------------------------------------------------------------
   Основная рабочая область
   -------------------------------------------------------------------------- */
.main-content {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: var(--spacing-lg);
    flex: 1;
}

/* --------------------------------------------------------------------------
   Карточки (Glassmorphism стиль)
   -------------------------------------------------------------------------- */
.card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
    animation: fadeIn 0.5s ease-out;
    margin-bottom: var(--spacing-lg);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--glass-border);
    flex-wrap: wrap;
}

.card-icon {
    width: 24px;
    height: 24px;
    color: var(--color-accent-blue);
    flex-shrink: 0;
}

.card-header h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    flex: 1;
    min-width: 200px;
}

.card-body {
    padding: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   Формы и элементы управления
   -------------------------------------------------------------------------- */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.form-row:last-child {
    margin-bottom: 0;
}

label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.form-control {
    background: rgba(30, 40, 50, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius-sm);
    padding: 12px 15px;
    color: var(--color-text-primary);
    font-size: var(--font-size-md);
    font-family: inherit;
    transition: all var(--transition-fast);
    width: 100%;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.form-control:hover {
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(35, 45, 60, 0.9);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent-blue);
    background: rgba(40, 55, 75, 0.95);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.25),
                0 2px 8px rgba(30, 136, 229, 0.15);
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

/* Стили для select */
select.form-control {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23b0bec5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

select.form-control option {
    background: rgba(30, 40, 50, 0.98);
    color: var(--color-text-primary);
    padding: 10px 15px;
}

select.form-control optgroup {
    background: rgba(20, 30, 40, 0.98);
    color: var(--color-text-primary);
    font-weight: 600;
}

/* Чекбоксы */
input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-accent-blue);
}

/* Number input arrows */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    opacity: 1;
    cursor: pointer;
}

/* --------------------------------------------------------------------------
   Кнопки
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 20px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-md);
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-2px);
}

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

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent-blue) 0%, var(--color-accent-blue-dark) 100%);
    color: white;
}

.btn-primary:hover {
    box-shadow: 0 4px 12px rgba(30, 136, 229, 0.4);
}

.btn-add {
    background: rgba(67, 160, 71, 0.15);
    color: var(--color-accent-green);
    border: 1px solid rgba(67, 160, 71, 0.3);
    padding: 10px 16px;
    font-size: var(--font-size-sm);
}

.btn-add:hover {
    background: rgba(67, 160, 71, 0.25);
    border-color: var(--color-accent-green);
}

.btn-calculate {
    background: linear-gradient(135deg, var(--color-accent-orange) 0%, #e65100 100%);
    color: white;
    width: 100%;
    padding: 16px 24px;
    font-size: var(--font-size-lg);
    font-weight: 600;
    justify-content: center;
}

.btn-calculate:hover {
    box-shadow: 0 6px 20px rgba(255, 109, 0, 0.4);
}

.btn-screenshot {
    background: linear-gradient(135deg, #7e57c2 0%, #5e35b1 100%);
    color: white;
    width: 100%;
    padding: 16px 24px;
    font-size: var(--font-size-lg);
    font-weight: 600;
    justify-content: center;
}

.btn-screenshot:hover {
    box-shadow: 0 6px 20px rgba(126, 87, 194, 0.4);
}

.btn-reset {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-secondary);
    border: 1px solid var(--glass-border);
    width: 100%;
    padding: 16px 24px;
    font-size: var(--font-size-md);
}

.btn-reset:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

/* --------------------------------------------------------------------------
   Панель транспорта
   -------------------------------------------------------------------------- */
.transport-card {
    animation-delay: 0.1s;
}

/* Изображение транспорта */
.transport-image {
    margin-bottom: var(--spacing-lg);
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
}

.transport-img {
    max-width: 100%;
    height: auto;
    max-height: 180px;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    transition: all var(--transition-normal);
}

.transport-img:hover {
    transform: scale(1.02);
    filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.4));
}

/* Настройки упаковки */
.packing-settings {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
}

.packing-settings .form-row {
    align-items: end;
}

.packing-settings label {
    cursor: pointer;
}

.packing-settings input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-accent-blue);
}

.axle-settings {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
}

.subsection-title {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* --------------------------------------------------------------------------
   Панель груза
   -------------------------------------------------------------------------- */
.cargo-card {
    animation-delay: 0.2s;
}

.cargo-card .card-header {
    justify-content: space-between;
}

/* Настройки упаковки */
.packing-settings {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
}

.packing-settings label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
}

.packing-settings input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-accent-blue);
}

.cargo-form {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.cargo-params {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px dashed var(--glass-border);
}

/* Список груза */
.cargo-list {
    margin-top: var(--spacing-lg);
}

.cargo-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-height: 350px;
    overflow-y: auto;
    padding-right: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

/* Скроллбар для списка */
.cargo-items::-webkit-scrollbar {
    width: 6px;
}

.cargo-items::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.cargo-items::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.cargo-items::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Элемент списка груза */
.cargo-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    animation: slideIn 0.3s ease-out;
    transition: all var(--transition-fast);
}

.cargo-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.cargo-item-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cargo-item-icon.drum {
    background: rgba(255, 109, 0, 0.15);
    color: var(--color-accent-orange);
}

.cargo-item-icon.pallet {
    background: rgba(30, 136, 229, 0.15);
    color: var(--color-accent-blue);
}

.cargo-item-icon svg {
    width: 22px;
    height: 22px;
}

.cargo-item-info {
    flex: 1;
    min-width: 0;
}

.cargo-item-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.cargo-item-details {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.cargo-item-quantity {
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 700;
    min-width: 60px;
    text-align: center;
}

.cargo-item-remove {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.cargo-item-remove:hover {
    background: rgba(229, 57, 53, 0.15);
    color: var(--color-accent-red);
}

.cargo-item-remove svg {
    width: 18px;
    height: 18px;
}

/* Итого по грузу */
.cargo-total {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.total-value {
    font-weight: 700;
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
}

.total-value.weight-value {
    color: var(--color-accent-orange);
}

/* --------------------------------------------------------------------------
   Центр тяжести
   -------------------------------------------------------------------------- */
.cog-info {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
}

.cog-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.cog-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius-sm);
}

.cog-value {
    font-weight: 700;
    color: var(--color-accent-red);
    font-size: var(--font-size-md);
}

/* --------------------------------------------------------------------------
   Кнопки действий
   -------------------------------------------------------------------------- */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--glass-border);
}

/* --------------------------------------------------------------------------
   Панель визуализации
   -------------------------------------------------------------------------- */
.visualization-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.canvas-card {
    animation-delay: 0.3s;
}

.canvas-container {
    position: relative;
    min-height: 400px;
    display: flex;
    flex-direction: column;
}

#truck-canvas {
    width: 100%;
    height: 450px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--border-radius-md);
    cursor: crosshair;
    display: block;
}

/* Контейнер для canvas с прокруткой на маленьких экранах */
.canvas-wrapper {
    width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    border-radius: var(--border-radius-md);
    background: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-md);
}

.canvas-wrapper canvas {
    min-width: 100%;
}

/* Скроллбар для canvas */
.canvas-wrapper::-webkit-scrollbar {
    height: 8px;
}

.canvas-wrapper::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.canvas-wrapper::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.canvas-wrapper::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.canvas-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--border-radius-sm);
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 3px;
}

.legend-color.drum-legend {
    background: linear-gradient(135deg, var(--color-accent-orange) 0%, #e65100 100%);
}

.legend-color.pallet-legend {
    background: linear-gradient(135deg, var(--color-accent-blue) 0%, var(--color-accent-blue-dark) 100%);
}

.legend-color.cog-legend {
    background: radial-gradient(circle, var(--color-accent-red) 40%, transparent 40%);
    border: 2px solid var(--color-accent-red);
}

.legend-color.axle-front {
    background: var(--color-accent-green);
}

.legend-color.axle-rear {
    background: var(--color-accent-blue);
}

/* --------------------------------------------------------------------------
   Карточка результатов
   -------------------------------------------------------------------------- */
.results-card {
    animation-delay: 0.4s;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.result-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    min-width: 150px;
}

.result-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.4;
}

.result-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

.result-value.weight-counter {
    color: var(--color-accent-orange);
}

/* --------------------------------------------------------------------------
   Развесовка по осям
   -------------------------------------------------------------------------- */
.axle-results {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
}

.axle-bars {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.axle-bar-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.axle-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.axle-limit {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    background: rgba(255, 255, 255, 0.05);
    padding: 2px 8px;
    border-radius: 3px;
}

.axle-bar {
    height: 28px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.axle-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent-green) 0%, var(--color-accent-blue) 100%);
    border-radius: var(--border-radius-sm);
    transition: width 0.8s ease-out;
    position: relative;
    min-width: 2px;
}

.axle-fill.overload {
    background: linear-gradient(90deg, var(--color-accent-red) 0%, #b71c1c 100%);
    animation: pulse 1s infinite;
}

.axle-value {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
}

.axle-load {
    font-weight: 600;
    color: var(--color-text-primary);
}

.axle-status {
    font-size: var(--font-size-xs);
    padding: 3px 10px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
}

.axle-status.ok {
    background: rgba(67, 160, 71, 0.2);
    color: var(--color-accent-green);
}

.axle-status.warning {
    background: rgba(255, 152, 0, 0.2);
    color: #ff9800;
}

.axle-status.overload {
    background: rgba(229, 57, 53, 0.2);
    color: var(--color-accent-red);
}

/* --------------------------------------------------------------------------
   Центр тяжести
   -------------------------------------------------------------------------- */
.cog-info {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
}

.cog-values {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.cog-item {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.cog-value {
    font-weight: 600;
    color: var(--color-accent-red);
}

/* --------------------------------------------------------------------------
   Статус загрузки
   -------------------------------------------------------------------------- */
.load-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    margin-top: var(--spacing-md);
}

.status-indicator {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-text-muted);
    flex-shrink: 0;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.1);
}

.status-indicator.pending {
    background: var(--color-text-muted);
}

.status-indicator.success {
    background: var(--color-accent-green);
    box-shadow: 0 0 12px var(--color-accent-green);
}

.status-indicator.warning {
    background: #ff9800;
    box-shadow: 0 0 12px #ff9800;
}

.status-indicator.error {
    background: var(--color-accent-red);
    box-shadow: 0 0 12px var(--color-accent-red);
    animation: pulse 1s infinite;
}

.status-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Подвал
   -------------------------------------------------------------------------- */
.app-footer {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Анимации
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-180deg) scale(0.5);
    }
    to {
        opacity: 1;
        transform: rotate(0) scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

@keyframes countingUp {
    from {
        opacity: 0.5;
        transform: translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Анимация счётчика */
.weight-counter {
    animation: countingUp 0.3s ease-out;
}

/* --------------------------------------------------------------------------
   Адаптивность
   -------------------------------------------------------------------------- */
@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .visualization-panel {
        order: -1;
    }
    
    .input-panel {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .app-container {
        padding: var(--spacing-sm);
    }

    .app-header {
        padding: var(--spacing-md);
    }

    .logo h1 {
        font-size: var(--font-size-lg);
    }

    .subtitle {
        padding-left: 0;
        font-size: var(--font-size-xs);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .canvas-legend {
        gap: var(--spacing-md);
        justify-content: flex-start;
    }

    .legend-item {
        font-size: var(--font-size-xs);
    }

    .cargo-item {
        flex-wrap: wrap;
    }

    .cargo-item-quantity {
        order: 3;
        width: 100%;
        margin-top: var(--spacing-sm);
    }
    
    .card-body {
        padding: var(--spacing-lg);
    }
    
    .transport-img {
        max-height: 120px;
    }
}

@media (max-width: 480px) {
    .logo {
        flex-direction: column;
        text-align: center;
    }

    .logo-icon {
        width: 40px;
        height: 40px;
    }

    .card-header {
        flex-wrap: wrap;
    }

    .card-header h2 {
        width: 100%;
        order: 3;
        margin-top: var(--spacing-sm);
        font-size: var(--font-size-md);
    }

    .btn-add {
        padding: 8px 12px;
        font-size: var(--font-size-sm);
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .axle-bar {
        height: 24px;
    }
    
    .cargo-total {
        grid-template-columns: 1fr;
    }
    
    .cog-values {
        grid-template-columns: 1fr;
    }
}

/* --------------------------------------------------------------------------
   Плавные переходы для всех интерактивных элементов
   -------------------------------------------------------------------------- */
a, button, input, select, .axle-fill, .status-indicator {
    transition: all var(--transition-normal);
}

/* --------------------------------------------------------------------------
   Утилитные классы
   -------------------------------------------------------------------------- */
.hidden {
    display: none !important;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --------------------------------------------------------------------------
   Стили для пустого состояния
   -------------------------------------------------------------------------- */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-muted);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state p {
    font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Модальное окно для скриншота
   -------------------------------------------------------------------------- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-window {
    background: linear-gradient(135deg, rgba(30, 40, 50, 0.98) 0%, rgba(20, 30, 40, 0.98) 100%);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    max-width: 1200px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.9) translateY(-20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-window {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--glass-border);
}

.modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0;
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(229, 57, 53, 0.2);
    color: var(--color-accent-red);
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

.modal-body {
    padding: var(--spacing-xl);
    overflow-y: auto;
    flex: 1;
}

.screenshot-preview {
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    overflow: auto;
}

#screenshot-canvas {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
}

.screenshot-info {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
}

.screenshot-info h4 {
    font-size: var(--font-size-md);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--glass-border);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.info-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-size: var(--font-size-md);
    color: var(--color-text-primary);
    font-weight: 600;
}

.modal-footer {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: rgba(255, 255, 255, 0.03);
    border-top: 1px solid var(--glass-border);
}

.btn-download {
    flex: 1;
    background: linear-gradient(135deg, var(--color-accent-blue) 0%, var(--color-accent-blue-dark) 100%);
    color: white;
    padding: 14px 20px;
    font-size: var(--font-size-md);
    font-weight: 500;
    justify-content: center;
}

.btn-download:hover {
    box-shadow: 0 4px 12px rgba(30, 136, 229, 0.4);
}

@media (max-width: 768px) {
    .modal-footer {
        flex-direction: column;
    }
    
    .modal-window {
        width: 95%;
        max-height: 95vh;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
}