:root {
    --glass-bg: rgba(255, 255, 255, 0.07);
    --glass-border: rgba(255, 255, 255, 0.13);
    --accent: #00d2ff;
    --accent-2: #3a7bd5;
    --mode-default: #00d2ff;
    --mode-url: #f59e0b;
    --danger: #ff4757;
    --text: #ffffff;
    --text-dim: rgba(255, 255, 255, 0.42);
}

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

body {
    overflow: hidden;
    background: #000;
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text);
    width: 100vw;
    height: 100vh;
}

/* ── モードバー ── */
#mode-bar {
    position: fixed;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 200;
    border-radius: 50px;
    padding: 5px 14px;
    white-space: nowrap;
}

.mode-bar-inner {
    display: flex;
    align-items: center;
    gap: 10px;
}

.mode-toggle-group {
    display: flex;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 40px;
    padding: 3px;
    gap: 3px;
}

.mode-btn {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.76rem;
    padding: 5px 14px;
    border-radius: 40px;
    cursor: pointer;
    transition: all 0.22s;
}

.mode-btn.active[data-mode="default"] {
    background: rgba(0, 210, 255, 0.2);
    color: var(--mode-default);
}

.mode-btn.active[data-mode="url"] {
    background: rgba(245, 158, 11, 0.2);
    color: var(--mode-url);
}

.mode-btn:not(.active):hover {
    color: white;
}

.bar-divider {
    width: 1px;
    height: 20px;
    background: var(--glass-border);
}

#anim-mode-select {
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--glass-border);
    color: white;
    font-size: 0.75rem;
    padding: 5px 12px;
    border-radius: 20px;
    outline: none;
    cursor: pointer;
    font-family: inherit;
    appearance: none;
    -webkit-appearance: none;
}

.bar-btn {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border);
    color: white;
    font-size: 0.75rem;
    padding: 5px 12px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
}

.bar-btn:hover {
    background: rgba(255, 255, 255, 0.16);
}

.wiki-badge {
    font-size: 0.9rem;
    animation: spin 1s linear infinite;
    display: inline-block;
}

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

/* ── ウォーターフォール ── */
#waterfall-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

/* ── アニメーション ── */
.falling-text {
    position: absolute;
    white-space: nowrap;
    user-select: none;
    pointer-events: none;
    will-change: transform, opacity;
}

/* ── Glass ── */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
}

/* ── コントロールパネル ── */
#control-panel {
    position: fixed;
    right: 20px;
    top: 70px;
    width: 320px;
    max-height: calc(100vh - 90px);
    z-index: 150;
    padding: 18px;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.35s cubic-bezier(0.23, 1, 0.32, 1), opacity 0.25s;
}

#control-panel.hidden {
    transform: translateX(360px);
    opacity: 0;
    pointer-events: none;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-shrink: 0;
}

.panel-header h1 {
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

#close-panel {
    background: none;
    border: none;
    color: white;
    font-size: 0.95rem;
    cursor: pointer;
    padding: 3px;
    opacity: 0.7;
}

#close-panel:hover {
    opacity: 1;
}

#close-panel:hover {
    color: white;
}

/* タブ */
.panel-tabs {
    display: flex;
    gap: 3px;
    margin-bottom: 14px;
    flex-shrink: 0;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 8px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8rem;
    padding: 6px 4px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn.active {
    background: rgba(0, 210, 255, 0.12);
    color: var(--accent);
}

.tab-btn:hover:not(.active) {
    color: white;
}

.tab-content {
    display: none;
    overflow-y: auto;
    flex: 1;
    padding-right: 2px;
}

.tab-content.active {
    display: block;
}

/* モードインジケーター */
.mode-indicator {
    border-radius: 8px;
    padding: 7px 11px;
    font-size: 0.76rem;
    margin-bottom: 12px;
    font-weight: 500;
}

.mode-default-indicator {
    background: rgba(0, 210, 255, 0.1);
    color: var(--mode-default);
    border: 1px solid rgba(0, 210, 255, 0.2);
}

.mode-url-indicator {
    background: rgba(245, 158, 11, 0.1);
    color: var(--mode-url);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* 設定グループ */
.settings-group {
    margin-bottom: 18px;
}

.settings-group h2 {
    font-size: 0.68rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 9px;
    letter-spacing: 0.1em;
}

.setting-item {
    margin-bottom: 13px;
}

.setting-item label {
    display: block;
    font-size: 0.82rem;
    margin-bottom: 5px;
    color: white;
}

.setting-item label span {
    float: right;
    color: white;
    font-size: 0.78rem;
    opacity: 0.8;
}

/* インプット */
input[type="text"],
textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: white;
    padding: 8px 10px;
    font-family: inherit;
    font-size: 0.82rem;
    outline: none;
    transition: border-color 0.2s;
}

input:focus,
textarea:focus {
    border-color: var(--accent);
}

textarea {
    resize: vertical;
    min-height: 62px;
}

input[type="range"] {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: white;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

/* ボタン */
button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    border-radius: 8px;
    transition: all 0.2s;
}

.btn-primary {
    width: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    color: white;
    padding: 9px;
    font-weight: 600;
    font-size: 0.82rem;
}

.btn-primary:hover {
    filter: brightness(1.15);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.09);
    color: white;
    padding: 7px 11px;
    font-size: 0.79rem;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.16);
}

.btn-danger {
    background: rgba(255, 71, 87, 0.14);
    color: var(--danger);
    padding: 7px 11px;
    font-size: 0.79rem;
    border: 1px solid rgba(255, 71, 87, 0.24);
    width: 100%;
}

.btn-danger:hover {
    background: rgba(255, 71, 87, 0.26);
}

.hint {
    font-size: 0.68rem;
    color: white;
    opacity: 0.6;
    line-height: 1.5;
}

/* ── カラーパレット（丸ボタン・2行折り返し） ── */
.color-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    align-items: center;
}

.swatch {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    padding: 0;
    transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s;
}

.swatch:hover {
    transform: scale(1.2);
    border-color: rgba(255, 255, 255, 0.55);
}

.swatch.active {
    border-color: white;
    transform: scale(1.12);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.55);
}

/* カスタムカラーピッカー（虹色の丸）*/
.swatch-custom {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px dashed rgba(255, 255, 255, 0.4);
    background: conic-gradient(from 0deg, #f00, #ff0, #0f0, #0ff, #00f, #f0f, #f00);
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.18s;
}

.swatch-custom:hover {
    transform: scale(1.2);
}

.swatch-custom input[type="color"] {
    opacity: 0;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

/* ── フォントグリッド ── */
.font-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.font-btn {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 8px 10px;
    font-size: 0.82rem;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.18s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.font-btn:hover {
    background: rgba(255, 255, 255, 0.14);
}

.font-btn.active {
    background: rgba(0, 210, 255, 0.18);
    border-color: var(--accent);
    color: var(--accent);
}

/* スクロールバー */
::-webkit-scrollbar {
    width: 3px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 2px;
}