/*
    Велокалькулятор давления
    Тёмная тема, CSS-переменные, минимализм
*/

:root {
    --bg-page: #0f0f1a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #222240;
    --bg-input: #12122000;
    --color-text: #e0e0e0;
    --color-muted: #7070a0;
    --color-hint: #505070;
    --color-accent: #6c5ce7;
    --color-accent2: #00cec9;
    --color-warning: #e17055;
    --border: #2d2d44;
    --radius: 12px;
    --radius-sm: 8px;
}

[data-theme="light"] {
    --bg-page: #f0f1f5;
    --bg-card: #ffffff;
    --bg-card-hover: #ebebf4;
    --color-text: #2d2d3a;
    --color-muted: #666680;
    --color-hint: #9999b0;
    --color-accent: #5848c8;
    --color-accent2: #00a8a4;
    --border: #d0d0e4;
}

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

body {
    background-color: var(--bg-page);
    color: var(--color-text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    font-size: 22px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2.5rem 1.25rem 4rem;
    transition: background-color 0.3s, color 0.3s;
}

.page-title {
    width: 100%;
    max-width: 640px;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

/* ============================================================
   ОСНОВНОЙ КОНТЕЙНЕР
   ============================================================ */

.calculator {
    width: 100%;
    max-width: 640px;
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

/* ============================================================
   ШАПКА
   ============================================================ */

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Переключатель PSI / Bar */
.unit-toggle {
    display: flex;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.unit-btn {
    background: none;
    border: none;
    color: var(--color-muted);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.4rem 0.9rem;
    transition: background-color 0.2s, color 0.2s;
}

.unit-btn.active {
    background-color: var(--color-accent);
    color: #fff;
}

/* ============================================================
   СЕКЦИИ
   ============================================================ */

.section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.section-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.section-hint {
    font-size: 0.85rem;
    color: var(--color-hint);
    margin-top: -0.4rem;
}

/* ============================================================
   ВЫБОР ВЕЛОСИПЕДА
   ============================================================ */

.bike-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
}

.bike-option:last-child:nth-child(odd) {
    grid-column: span 2;
}

/* Скрываем radio-input, кликается вся карточка */
.bike-option input[type="radio"] {
    display: none;
}

.bike-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    padding: 1rem 0.5rem;
    background-color: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
}

.bike-option input:checked+.bike-card {
    border-color: var(--color-accent);
    background-color: rgba(108, 92, 231, 0.1);
}

.bike-icon {
    width: 100%;
    height: 160px;
    object-fit: contain;
    display: block;
    border-radius: 6px;
    /* mix-blend-mode: lighten убирает чёрный фон PNG на тёмной теме:
       чёрный (0,0,0) + тёмная карточка → показывается более светлый цвет карточки.
       Белые линии остаются белыми (они всегда светлее). */
    mix-blend-mode: lighten;
}

/* На светлой теме: прозрачный фон карточки + инверт иконки */
[data-theme="light"] .bike-card {
    background-color: transparent;
}

[data-theme="light"] .bike-icon {
    filter: invert(1) contrast(8);
    mix-blend-mode: multiply;
}

.bike-name {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text);
}

/* ============================================================
   СЛАЙДЕРЫ
   ============================================================ */

.slider-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.slider-label {
    font-size: 1.1rem;
    color: var(--color-text);
}

.slider-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent2);
    min-width: 4rem;
    text-align: right;
}


.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: var(--border);
    outline: none;
    cursor: pointer;
    margin-bottom: 0.5rem;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    border: 2px solid var(--bg-page);
    transition: transform 0.15s;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    border: 2px solid var(--bg-page);
}

/* ============================================================
   ПОКРЫТИЕ
   ============================================================ */

.surface-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.6rem;
}

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

.surface-card {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.7rem 1rem;
    background-color: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.88rem;
    white-space: nowrap;
    transition: border-color 0.2s, background-color 0.2s;
}

.condition-toggle {
    display: flex;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.condition-btn {
    flex: 1;
    background: none;
    border: none;
    color: var(--color-muted);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    transition: background-color 0.2s, color 0.2s;
}

.condition-btn.active[data-condition="dry"] {
    background-color: var(--color-accent);
    color: #fff;
}

.condition-btn.active[data-condition="wet"] {
    background-color: #0984e3;
    color: #fff;
}

.condition-btn.active[data-condition="winter"] {
    background-color: #74b9ff;
    color: #1a1a2e;
}

#conditionWinter.hidden {
    display: none;
}

.style-btn {
    flex: 1;
    background: none;
    border: none;
    color: var(--color-muted);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    transition: background-color 0.2s, color 0.2s;
}

.style-btn.active[data-style="comfort"] {
    background-color: #00b894;
    color: #fff;
}

.style-btn.active[data-style="standard"] {
    background-color: var(--color-accent);
    color: #fff;
}

.style-btn.active[data-style="aggressive"] {
    background-color: #e17055;
    color: #fff;
}

.surface-option input:checked+.surface-card {
    border-color: var(--color-accent);
    background-color: rgba(108, 92, 231, 0.1);
}

.surface-icon {
    font-size: 1rem;
}

/* ============================================================
   ЧЕКБОКС TUBELESS
   ============================================================ */

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.8rem 1rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.checkbox-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-accent);
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-label {
    font-size: 1.1rem;
    font-weight: 500;
}

.checkbox-hint {
    font-size: 0.85rem;
    color: var(--color-hint);
    margin-left: auto;
}

/* ============================================================
   РЕЗУЛЬТАТ
   ============================================================ */

.result {
    display: flex;
    align-items: stretch;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    min-height: 110px;
}

.result-card {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    padding: 1.25rem 1rem;
}

.result-divider {
    width: 1px;
    background-color: var(--border);
    margin: 0.75rem 0;
}

.result-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.result-value {
    font-size: clamp(1.7rem, 7vw, 2.6rem);
    font-weight: 700;
    line-height: 1;
    color: var(--color-accent2);
    transition: color 0.3s;
    white-space: nowrap;
}

.result-value.result-ok {
    color: #4ade80;
}

.result-value.result-warn {
    color: #f0b429;
}

.result-value.result-danger {
    color: var(--color-warning);
}

.result-unit {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-muted);
    letter-spacing: 0.06em;
}

/* ============================================================
   ПРЕДУПРЕЖДЕНИЕ
   ============================================================ */

.warning {
    padding: 0.75rem 1rem;
    background-color: rgba(225, 112, 85, 0.1);
    border: 1px solid var(--color-warning);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--color-warning);
    line-height: 1.4;
}

.warning.hidden {
    display: none;
}

/* ============================================================
   ФУТЕР
   ============================================================ */

.calc-footer {
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-hint);
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
}

/* ============================================================
   ФИКСИРОВАННЫЕ КНОПКИ (система / язык / тема) — общая обёртка
   ============================================================ */

.top-controls {
    position: fixed;
    top: 1rem;
    right: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 100;
}

/* ============================================================
   КНОПКА ТЕМЫ
   ============================================================ */

.theme-toggle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--border);
    background-color: var(--bg-card);
    cursor: pointer;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s, border-color 0.3s;
}

/* В тёмной теме показываем ☀️ (переключиться в светлую) */
.theme-toggle::after {
    content: '☀️';
}

/* В светлой теме показываем 🌙 (переключиться в тёмную) */
[data-theme="light"] .theme-toggle::after {
    content: '🌙';
}

/* ============================================================
   ДРОПДАУН ЯЗЫКА
   ============================================================ */

.lang-dropdown {
    position: relative;
}

.lang-dropdown-btn {
    height: 48px;
    padding: 0 0.75rem;
    border-radius: 24px;
    border: 2px solid var(--border);
    background-color: var(--bg-card);
    color: var(--color-text);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    transition: border-color 0.2s;
}

.lang-dropdown-btn:hover {
    border-color: var(--color-accent);
}

.lang-arrow {
    font-size: 0.65rem;
    color: var(--color-muted);
    transition: transform 0.2s;
    margin-left: 2px;
}

.lang-dropdown.open .lang-arrow {
    transform: rotate(180deg);
}

.lang-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background-color: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    z-index: 200;
    min-width: 90px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.lang-dropdown-menu.hidden {
    display: none;
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: none;
    background: none;
    color: var(--color-text);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    text-align: left;
    transition: background-color 0.15s;
}

.lang-option:hover {
    background-color: var(--bg-card-hover);
}

.lang-option.active {
    color: var(--color-accent);
}

/* ============================================================
   КНОПКА СИСТЕМЫ МЕР (кг / lbs)
   ============================================================ */

.system-toggle-btn {
    height: 48px;
    padding: 0 0.75rem;
    border-radius: 24px;
    border: 2px solid var(--border);
    background-color: var(--bg-card);
    color: var(--color-muted);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s, border-color 0.3s, color 0.3s;
}

.system-toggle-btn:hover {
    color: var(--color-text);
    border-color: var(--color-accent);
}

.system-toggle-btn.imperial {
    color: var(--color-accent2);
    border-color: var(--color-accent2);
}

/* ============================================================
   КНОПКА-ТРИГГЕР ДИАГРАММЫ ШИНЫ
   ============================================================ */

.tire-hint-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--color-hint);
    font-size: 0.8rem;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    margin-top: 0.4rem;
    transition: color 0.2s, border-color 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
}

.tire-hint-sub {
    font-size: 0.72rem;
    color: var(--color-hint);
    opacity: 0.7;
}

.tire-hint-btn:hover {
    color: var(--color-text);
    border-color: var(--color-muted);
}

.tire-hint-btn.active {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

/* ============================================================
   КОНТЕЙНЕР ДИАГРАММЫ
   ============================================================ */

.tire-diagram {
    margin-top: 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 0.5rem 0.5rem;
}

.tire-diagram.hidden {
    display: none;
}

.tire-svg {
    width: 100%;
    display: block;
}

.tire-svg.hidden {
    display: none;
}

.mtb-diam-picker {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-top: 0.4rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.mtb-diam-picker.hidden {
    display: none;
}

.mtb-diam-label {
    color: var(--color-muted);
    font-size: 0.85rem;
    font-weight: 600;
}

.mtb-diam-btns {
    display: inline-flex;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.mtb-diam-btn {
    background: none;
    border: none;
    color: var(--color-muted);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.3rem 0.7rem;
    transition: background-color 0.2s, color 0.2s;
}

.mtb-diam-btn.active {
    background-color: var(--color-accent);
    color: #fff;
}

/* ============================================================
   КОНФИГУРАЦИЯ ЗАГРУЗКИ ТУРИНГА
   ============================================================ */

.touring-load-section.hidden {
    display: none;
}

/* Сетка: [сумки слева] [фото] [сумки справа] */
.touring-visual {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0.5rem;
    align-items: stretch;
}

.bag-col {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.bag-cell {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 206, 201, 0.10);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    min-height: 80px;
    transition: background-color 0.25s;
}

/* Чёрный фон под фото — работает в обеих темах */
.touring-img-wrap {
    background: #0d0d18;
    border-radius: var(--radius-sm);
    overflow: hidden;
    display: flex;
}

.touring-top-view {
    width: 130px;
    display: block;
    object-fit: cover;
}

/* Строка с процентами */
.touring-pct-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-top: 0.1rem;
}

.pct-val {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-accent2);
}

.pct-sep {
    font-size: 0.8rem;
    color: var(--color-muted);
}

.bag-input {
    width: 80%;
    background: transparent;
    border: none;
    outline: none;
    color: var(--color-text);
    font-size: 1.6rem;
    font-weight: 700;
    text-align: center;
    -moz-appearance: textfield;
    cursor: text;
}

.bag-input::-webkit-inner-spin-button,
.bag-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
}

.bag-hint {
    font-size: 0.78rem;
    color: var(--color-hint);
    text-align: center;
    margin-top: 0.25rem;
}

/* ============================================================
   КНОПКИ ДЕЙСТВИЙ (Поделиться / Печать)
   ============================================================ */

.action-row {
    display: flex;
    gap: 0.6rem;
}

.action-btn {
    flex: 1;
    padding: 0.65rem 1rem;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: color 0.2s, border-color 0.2s;
}

.action-btn:hover {
    color: var(--color-text);
    border-color: var(--color-muted);
}

.action-btn.copied {
    color: #4ade80;
    border-color: #4ade80;
}

/* ============================================================
   PRINT / PDF
   ============================================================ */

.print-summary {
    display: none;
}

@media print {
    @page { margin: 1.5cm; }

    * {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    body {
        background: #fff !important;
        color: #000 !important;
        padding: 0;
        min-height: auto;
    }

    .top-controls,
    .section,
    .touring-load-section,
    .unit-toggle,
    .action-row,
    .calc-footer {
        display: none !important;
    }

    .warning {
        border-color: #c0392b !important;
        background: #fef0ed !important;
        color: #c0392b !important;
    }

    .print-summary {
        display: block;
        margin-bottom: 1rem;
        border: 1px solid #ddd;
        border-radius: 8px;
        padding: 0.75rem 1rem;
        background: #f9f9f9;
    }

    .print-params-list {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.3rem 2rem;
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .print-param {
        display: flex;
        justify-content: space-between;
        border-bottom: 1px solid #eee;
        padding: 0.3rem 0;
        font-size: 0.8rem;
    }

    .print-param dt {
        color: #555;
        font-weight: 400;
    }

    .print-param dd {
        font-weight: 600;
        color: #000;
        margin: 0;
    }

    .result {
        border: 2px solid #ddd !important;
        background: #fff !important;
    }

    .result-label,
    .result-unit,
    .section-label {
        color: #555 !important;
    }

    .result-divider {
        background: #ddd !important;
    }

    .result-value {
        color: #000 !important;
    }

    .result-value.result-ok    { color: #16a34a !important; }
    .result-value.result-warn  { color: #d97706 !important; }
    .result-value.result-danger { color: #dc2626 !important; }

    .page-title {
        color: #000 !important;
        font-size: 1.1rem;
    }

    .result-header {
        margin-top: 0.5rem;
    }
}