/* ============================================================
   War Thunder Style Aircraft Viewer — style.css
   ============================================================ */

:root {
    --accent: #f5a623;
    --accent-dim: #c9821a;
    --bg-panel: rgba(12, 16, 22, 0.82);
    --bg-panel-border: rgba(245, 166, 35, 0.35);
    --text: #e8edf2;
    --text-dim: #8a97a6;
    --font: "Segoe UI", "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN",
            "Yu Gothic", Meiryo, sans-serif;
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #05070a;
    font-family: var(--font);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
}

/* --- 3D ビューポート --- */
#viewer {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
}

#viewer canvas {
    display: block;
}

/* --- 共通: ガラスパネル --- */
.hidden {
    display: none !important;
}

#hud,
#control-panel {
    position: fixed;
    background: var(--bg-panel);
    border: 1px solid var(--bg-panel-border);
    border-radius: 10px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    padding: 16px 18px;
    z-index: 10;
}

/* --- HUD (左上: スペック) --- */
#hud {
    top: 20px;
    left: 20px;
    min-width: 240px;
}

#spec-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
    margin-bottom: 10px;
}

#spec-name {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--accent);
}

#spec-engine {
    font-size: 12px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
}

#spec-list {
    list-style: none;
}

#spec-list li {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 5px 0;
    font-size: 14px;
}

#spec-list .label {
    color: var(--text-dim);
}

#spec-list .value {
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* --- コントロールパネル (右上) --- */
#control-panel {
    top: 20px;
    right: 20px;
    width: 230px;
}

#control-panel h2 {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 12px;
}

.toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    font-size: 13px;
    cursor: pointer;
    user-select: none;
}

.toggle input {
    appearance: none;
    -webkit-appearance: none;
    width: 38px;
    height: 20px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
    flex-shrink: 0;
}

.toggle input::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #fff;
    transition: transform 0.2s;
}

.toggle input:checked {
    background: var(--accent);
}

.toggle input:checked::after {
    transform: translateX(18px);
}

/* --- パネル内の区切り線 --- */
.panel-divider {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    margin: 10px 0 6px;
}

/* --- スライダー行 --- */
.slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 0 8px;
    font-size: 12px;
    color: var(--text-dim);
}

.slider-row label {
    flex-shrink: 0;
    width: 56px;
}

.slider-row input[type="range"] {
    flex: 1;
    appearance: none;
    -webkit-appearance: none;
    height: 4px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.18);
    outline: none;
    cursor: pointer;
}

.slider-row input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    box-shadow: 0 0 4px rgba(245, 166, 35, 0.6);
}

.slider-row input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border: none;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
}

.slider-row input[type="range"]:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.hint {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 11px;
    color: var(--text-dim);
    line-height: 1.7;
}

.hint b {
    color: var(--text);
}

/* --- フッター --- */
#footer-credit {
    position: fixed;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.5px;
    z-index: 5;
    pointer-events: none;
}

/* --- ロード中オーバーレイ --- */
#loading {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #05070a;
    z-index: 100;
    transition: opacity 0.5s;
}

#loading.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-inner {
    text-align: center;
    color: var(--text-dim);
}

.loading-inner p {
    margin-top: 16px;
    font-size: 13px;
    letter-spacing: 1px;
}

.spinner {
    width: 48px;
    height: 48px;
    margin: 0 auto;
    border: 3px solid rgba(245, 166, 35, 0.2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* --- エラー表示 --- */
.error-box {
    color: #ff6b6b;
    font-size: 13px;
    max-width: 360px;
    line-height: 1.6;
}

/* --- レスポンシブ --- */
@media (max-width: 640px) {
    #hud, #control-panel {
        font-size: 12px;
        padding: 12px 14px;
    }
    #control-panel {
        width: 190px;
    }
    #spec-name {
        font-size: 18px;
    }
}