/* ==========================================================================
   静寂の枯山水 3D (Digital Zen Garden & Koi Pond) - Premium Design System
   ========================================================================== */

:root {
    --color-bg-deep: #0a0c0e;
    --color-bg-surface: rgba(18, 22, 26, 0.72);
    --color-bg-surface-hover: rgba(28, 34, 40, 0.85);
    --color-bg-panel: rgba(15, 18, 21, 0.72);
    
    --color-gold: #d4af37;
    --color-gold-light: #f3e5ab;
    --color-gold-glow: rgba(212, 175, 55, 0.35);
    
    --color-vermilion: #e65100;
    --color-cherry: #f48fb1;
    --color-zen-green: #4caf50;
    --color-koi-red: #ef4444;
    --color-water-cyan: #38bdf8;
    
    --color-text-main: #f5f5f7;
    --color-text-muted: #a0a6b2;
    --color-text-dim: #6b7280;
    
    --border-glass: 1px solid rgba(255, 255, 255, 0.12);
    --border-glass-hover: 1px solid rgba(212, 175, 55, 0.4);
    --border-glass-active: 1px solid rgba(212, 175, 55, 0.8);
    
    --shadow-soft: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --shadow-card: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(212, 175, 55, 0.25);
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --font-serif: 'Noto Serif JP', 'Cinzel', serif;
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
}

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--color-bg-deep);
    color: var(--color-text-main);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
}

/* WebGL Container */
#webgl-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
}

#webgl-container.cursor-rake {
    cursor: crosshair;
}

#webgl-container.cursor-orbit {
    cursor: grab;
}

#webgl-container.cursor-orbit:active {
    cursor: grabbing;
}

#webgl-container.cursor-koi {
    cursor: cell;
}

/* Loading Overlay */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    background: radial-gradient(circle at center, #171d22 0%, #0a0c0e 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1), visibility 1s;
}

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

.loader-content {
    text-align: center;
    max-width: 440px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.enso-circle {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top: 3px solid var(--color-gold);
    border-right: 3px solid rgba(212, 175, 55, 0.6);
    border-bottom: 2px solid rgba(212, 175, 55, 0.2);
    margin-bottom: 28px;
    animation: ensoRotate 4s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
    filter: drop-shadow(0 0 12px var(--color-gold-glow));
    position: relative;
}

.enso-circle::after {
    content: '';
    position: absolute;
    inset: 12px;
    border-radius: 50%;
    border: 1px dashed rgba(255, 255, 255, 0.2);
    animation: spinReverse 8s linear infinite;
}

@keyframes ensoRotate {
    0% { transform: rotate(0deg); }
    50% { transform: rotate(180deg) scale(1.05); }
    100% { transform: rotate(360deg); }
}

@keyframes spinReverse {
    from { transform: rotate(360deg); }
    to { transform: rotate(0deg); }
}

.loader-title {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    font-weight: 400;
    letter-spacing: 0.28em;
    margin-right: -0.28em;
    color: #ffffff;
    margin-bottom: 6px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
}

.loader-subtitle {
    font-family: 'Cinzel', serif;
    font-size: 0.85rem;
    letter-spacing: 0.35em;
    color: var(--color-gold);
    margin-bottom: 26px;
}

.loader-bar-container {
    width: 220px;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 99px;
    overflow: hidden;
    margin-bottom: 14px;
}

.loader-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--color-gold), #fff);
    border-radius: 99px;
    transition: width 0.3s ease;
}

.loader-status {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.start-btn {
    background: linear-gradient(135deg, var(--color-gold) 0%, #aa8210 100%);
    color: #111;
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    padding: 12px 34px;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 20px var(--color-gold-glow);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.start-btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 28px rgba(212, 175, 55, 0.5);
}

.start-btn.hidden {
    display: none;
}

.audio-notice {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    margin-top: 18px;
    line-height: 1.5;
}

/* UI Layer */
#ui-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 100;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px 32px;
}

#ui-layer > * {
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#ui-layer.hud-hidden > * {
    opacity: 0 !important;
    pointer-events: none !important;
    transform: translateY(-8px);
}

/* Header */
.zen-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    pointer-events: none;
    width: 100%;
}

.header-brand,
.header-status,
.header-actions {
    pointer-events: auto;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--color-bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-glass);
    padding: 8px 18px 8px 12px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-soft);
}

.brand-mon {
    width: 38px;
    height: 38px;
    color: var(--color-gold);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mon-svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 6px var(--color-gold-glow));
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    color: #fff;
    line-height: 1.2;
}

.brand-en {
    font-family: 'Cinzel', serif;
    font-size: 0.65rem;
    letter-spacing: 0.22em;
    color: var(--color-gold);
}

.header-status {
    display: flex;
    align-items: center;
    gap: 12px;
}

.time-badge, .sound-toggle-badge {
    background: var(--color-bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-glass);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--color-text-main);
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-fast);
}

.time-badge i, .sound-toggle-badge i {
    width: 17px;
    height: 17px;
    color: var(--color-gold);
}

.time-badge:hover, .sound-toggle-badge:hover {
    border: var(--border-glass-hover);
    background: var(--color-bg-surface-hover);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 9px;
}

.icon-btn {
    background: var(--color-bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-glass);
    color: var(--color-text-main);
    height: 42px;
    padding: 0 15px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    cursor: pointer;
    font-size: 0.84rem;
    font-family: var(--font-sans);
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-fast);
}

.icon-btn i {
    width: 17px;
    height: 17px;
    color: var(--color-gold);
}

.icon-btn:hover {
    border: var(--border-glass-hover);
    background: var(--color-bg-surface-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.icon-btn.active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.3) 0%, rgba(212, 175, 55, 0.15) 100%);
    border: var(--border-glass-active);
    color: var(--color-gold-light);
    box-shadow: 0 0 16px var(--color-gold-glow);
}

/* Mode Toolbar */
.mode-toolbar {
    position: fixed;
    top: 92px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-bg-panel);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: var(--border-glass);
    padding: 6px;
    border-radius: var(--radius-full);
    display: flex;
    gap: 6px;
    pointer-events: auto;
    box-shadow: var(--shadow-card);
    z-index: 10;
}

.mode-tab {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 0.86rem;
    font-family: var(--font-serif);
    padding: 9px 18px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mode-tab i {
    width: 16px;
    height: 16px;
}

.mode-tab:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.mode-tab.active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.25) 0%, rgba(212, 175, 55, 0.1) 100%);
    color: var(--color-gold-light);
    border: var(--border-glass-active);
    font-weight: 600;
    box-shadow: var(--shadow-glow);
}

.mode-tab.hidden,
.cam-btn.hidden,
.hidden {
    display: none !important;
}

/* Side Panels */
.panel {
    background: var(--color-bg-panel);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 20px;
    pointer-events: auto;
    box-shadow: var(--shadow-card);
    width: 265px;
    transition: all var(--transition-smooth);
}

.panel.hidden {
    display: none;
}

.panel-header {
    margin-bottom: 12px;
}

.panel-title {
    font-family: var(--font-serif);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-title i {
    width: 16px;
    height: 16px;
    color: var(--color-gold);
}

.panel-desc {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.panel-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
    margin: 16px 0;
}

/* Rake Panel */
.rake-panel {
    position: fixed;
    left: 32px;
    top: 155px;
}

.brush-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 14px;
}

.brush-btn {
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-glass);
    border-radius: var(--radius-md);
    padding: 9px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.brush-btn .brush-icon {
    font-size: 1.2rem;
    line-height: 1;
}

.brush-btn .lines-icon {
    font-weight: bold;
    letter-spacing: -2px;
}

.brush-btn .brush-name {
    font-size: 0.74rem;
    font-family: var(--font-serif);
}

.brush-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.25);
}

.brush-btn.active {
    background: rgba(212, 175, 55, 0.15);
    border-color: var(--color-gold);
    color: var(--color-gold-light);
    box-shadow: 0 0 12px var(--color-gold-glow);
}

/* Sand Palette Selector */
.sand-palette-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 7px;
}

.palette-btn {
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 7px 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 0.72rem;
    font-family: var(--font-serif);
    transition: all var(--transition-fast);
}

.palette-swatch {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.swatch-white { background: #ede7da; }
.swatch-black { background: #22262a; }
.swatch-gold { background: #d97706; }

.palette-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.palette-btn.active {
    border-color: var(--color-gold);
    color: var(--color-gold-light);
    background: rgba(212, 175, 55, 0.15);
}

/* Garden Builder Panel */
.build-panel {
    position: fixed;
    left: 32px;
    top: 155px;
    width: 295px;
    max-height: calc(100vh - 180px);
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: rgba(212, 175, 55, 0.3) transparent;
}

.build-panel::-webkit-scrollbar {
    width: 4px;
}

.build-panel::-webkit-scrollbar-thumb {
    background: rgba(212, 175, 55, 0.3);
    border-radius: 4px;
}

/* Garden Mode Selector (Traditional vs Creator Clean Slate) */
.garden-mode-box {
    background: rgba(212, 175, 55, 0.08);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: var(--radius-md);
    padding: 10px;
    margin-bottom: 12px;
}

.mode-box-title {
    font-size: 0.72rem;
    font-family: var(--font-serif);
    color: var(--color-gold-light);
    margin-bottom: 6px;
    font-weight: 600;
}

.garden-preset-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.garden-preset-btn {
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 7px 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    color: var(--color-text-muted);
    font-size: 0.74rem;
    font-family: var(--font-serif);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.garden-preset-btn i {
    width: 14px;
    height: 14px;
}

.garden-preset-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.garden-preset-btn.active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.3) 0%, rgba(212, 175, 55, 0.12) 100%);
    border-color: var(--color-gold);
    color: var(--color-gold-light);
    font-weight: 600;
    box-shadow: 0 0 10px var(--color-gold-glow);
}

.build-category-title {
    font-size: 0.73rem;
    font-family: var(--font-serif);
    color: var(--color-gold-light);
    letter-spacing: 0.05em;
    margin: 12px 0 6px 0;
    padding-bottom: 3px;
    border-bottom: 1px dashed rgba(212, 175, 55, 0.25);
    display: flex;
    align-items: center;
    gap: 6px;
}

.build-category-title:first-of-type {
    margin-top: 2px;
}

.build-item-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-bottom: 6px;
}

.build-item-btn {
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-glass);
    border-radius: var(--radius-md);
    padding: 8px 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    color: var(--color-text-muted);
    cursor: pointer;
    font-family: var(--font-serif);
    transition: all var(--transition-fast);
    position: relative;
    user-select: none;
}

.build-icon {
    font-size: 1.25rem;
    line-height: 1.1;
}

.build-name {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-text-main);
    line-height: 1.2;
}

.build-sub {
    font-size: 0.62rem;
    color: rgba(255, 255, 255, 0.45);
    transform: scale(0.95);
    line-height: 1;
}

.build-item-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    transform: translateY(-1px);
    border-color: rgba(212, 175, 55, 0.4);
}

.build-item-btn.active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.25) 0%, rgba(212, 175, 55, 0.1) 100%);
    border-color: var(--color-gold);
    color: var(--color-gold-light);
    box-shadow: 0 0 12px var(--color-gold-glow);
}

.build-item-btn.active .build-name {
    color: var(--color-gold-light);
}

.build-item-btn.active .build-sub {
    color: rgba(255, 235, 180, 0.85);
}

/* Selected Item Inspector (掴んで移動・向き・大きさ変更) */
.selected-inspector {
    background: rgba(20, 24, 28, 0.9);
    border: 1px solid rgba(212, 175, 55, 0.55);
    border-radius: var(--radius-md);
    padding: 12px;
    margin: 10px 0;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.5), 0 0 16px rgba(212, 175, 55, 0.2);
    animation: fadeIn 0.3s ease;
}

.selected-inspector.hidden {
    display: none;
}

.inspector-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(212, 175, 55, 0.25);
    padding-bottom: 6px;
    margin-bottom: 4px;
}

.inspector-title {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    font-family: var(--font-serif);
    color: var(--color-gold-light);
}

.inspector-title i {
    width: 14px;
    height: 14px;
    color: var(--color-gold);
}

.inspector-close-btn {
    background: transparent;
    border: none;
    color: var(--color-text-dim);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.inspector-close-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.inspector-hint {
    font-size: 0.68rem;
    color: #94a3b8;
    margin-bottom: 8px;
    line-height: 1.3;
}

.inspector-field {
    margin-bottom: 9px;
}

.inspector-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.72rem;
    margin-bottom: 4px;
    color: var(--color-text-muted);
}

.field-title {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.field-title i {
    width: 12px;
    height: 12px;
    color: var(--color-gold);
}

.field-value {
    color: var(--color-gold-light);
    font-weight: 600;
    font-family: monospace;
    font-size: 0.76rem;
}

.inspector-control-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.inspect-btn-sm {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #e2e8f0;
    font-size: 0.68rem;
    padding: 4px 6px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-serif);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.inspect-btn-sm:hover {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--color-gold);
    color: #fff;
}

.inspect-range {
    flex: 1;
    -webkit-appearance: none;
    height: 4px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 2px;
    outline: none;
}

.inspect-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-gold);
    cursor: pointer;
    box-shadow: 0 0 6px var(--color-gold-glow);
}

.inspect-range::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-gold);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 6px var(--color-gold-glow);
}

.inspector-action-row {
    margin-top: 8px;
}

.inspect-delete-btn {
    width: 100%;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #fca5a5;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.72rem;
    font-family: var(--font-serif);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.inspect-delete-btn i {
    width: 13px;
    height: 13px;
}

.inspect-delete-btn:hover {
    background: rgba(239, 68, 68, 0.28);
    border-color: #ef4444;
    color: #fff;
}

.build-action-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-top: 4px;
}

.undo-action-btn {
    background: rgba(212, 175, 55, 0.12);
    border: 1px solid rgba(212, 175, 55, 0.35);
    color: var(--color-gold-light);
    padding: 9px 8px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.76rem;
    font-family: var(--font-serif);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.undo-action-btn:hover {
    background: rgba(212, 175, 55, 0.22);
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.2);
}

.undo-action-btn i,
.reset-pattern-btn i {
    width: 14px;
    height: 14px;
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.slider-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 99px;
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-gold);
    box-shadow: 0 0 8px var(--color-gold-glow);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.pattern-presets {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.preset-btn {
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    text-align: left;
    color: var(--color-text-main);
    font-size: 0.82rem;
    font-family: var(--font-serif);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.preset-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateX(4px);
}

.preset-btn.reset-pattern-btn {
    color: #ff8a80;
    margin-top: 4px;
}

.preset-btn.reset-pattern-btn:hover {
    background: rgba(255, 138, 128, 0.12);
    border-color: rgba(255, 138, 128, 0.4);
}

.preset-btn i {
    width: 15px;
    height: 15px;
}

/* Atmosphere Panel */
.atmosphere-panel {
    position: fixed;
    right: 32px;
    top: 155px;
    width: 270px;
}

.atmosphere-grid {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.atmo-btn {
    background: rgba(255, 255, 255, 0.03);
    border: var(--border-glass);
    border-radius: var(--radius-md);
    padding: 8px 12px;
    display: grid;
    grid-template-columns: 32px 1fr;
    grid-template-rows: auto auto;
    align-items: center;
    cursor: pointer;
    text-align: left;
    transition: all var(--transition-fast);
}

.atmo-btn .atmo-icon {
    grid-row: span 2;
    font-size: 1.3rem;
}

.atmo-btn .atmo-title {
    font-family: var(--font-serif);
    font-size: 0.85rem;
    font-weight: 600;
    color: #fff;
}

.atmo-btn .atmo-sub {
    font-size: 0.72rem;
    color: var(--color-text-muted);
}

.atmo-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateX(-4px);
}

.atmo-btn.active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.18) 0%, rgba(212, 175, 55, 0.05) 100%);
    border-color: var(--color-gold);
    box-shadow: 0 0 12px var(--color-gold-glow);
}

.atmo-btn.active .atmo-title {
    color: var(--color-gold-light);
}

.camera-presets {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 7px;
}

.cam-btn {
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 8px 8px;
    font-size: 0.78rem;
    font-family: var(--font-serif);
    color: var(--color-text-main);
    cursor: pointer;
    text-align: center;
    transition: all var(--transition-fast);
}

.cam-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.cam-btn.active {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--color-gold);
    color: var(--color-gold-light);
}

/* House Architecture Style Grid */
.house-style-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.house-btn {
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-glass);
    border-radius: var(--radius-md);
    padding: 8px 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    color: var(--color-text-muted);
    cursor: pointer;
    font-family: var(--font-serif);
    transition: all var(--transition-fast);
}

.house-icon {
    font-size: 1.25rem;
    line-height: 1.1;
}

.house-name {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-text-main);
    line-height: 1.2;
}

.house-sub {
    font-size: 0.62rem;
    color: rgba(255, 255, 255, 0.45);
    line-height: 1;
}

.house-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    transform: translateY(-1px);
    border-color: rgba(212, 175, 55, 0.4);
}

.house-btn.active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.25) 0%, rgba(212, 175, 55, 0.1) 100%);
    border-color: var(--color-gold);
    color: var(--color-gold-light);
    box-shadow: 0 0 12px var(--color-gold-glow);
}

.house-btn.active .house-name {
    color: var(--color-gold-light);
}

.house-btn.active .house-sub {
    color: rgba(255, 235, 180, 0.85);
}

/* Perimeter Garden Wall Style Grid */
.fence-style-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 5px;
}

.fence-btn {
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-glass);
    border-radius: var(--radius-md);
    padding: 8px 3px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    color: var(--color-text-muted);
    cursor: pointer;
    font-family: var(--font-serif);
    transition: all var(--transition-fast);
}

.fence-icon {
    font-size: 1.25rem;
    line-height: 1.1;
}

.fence-name {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--color-text-main);
    line-height: 1.2;
    text-align: center;
    white-space: nowrap;
}

.fence-sub {
    font-size: 0.58rem;
    color: rgba(255, 255, 255, 0.45);
    line-height: 1;
    text-align: center;
    white-space: nowrap;
}

.fence-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    transform: translateY(-1px);
    border-color: rgba(212, 175, 55, 0.4);
}

.fence-btn.active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.25) 0%, rgba(212, 175, 55, 0.1) 100%);
    border-color: var(--color-gold);
    color: var(--color-gold-light);
    box-shadow: 0 0 12px var(--color-gold-glow);
}

.fence-btn.active .fence-name {
    color: var(--color-gold-light);
}

.fence-btn.active .fence-sub {
    color: rgba(255, 235, 180, 0.85);
}

/* Floating HUD Restore Button */
.floating-hud-btn {
    position: fixed;
    right: 28px;
    bottom: 28px;
    z-index: 999;
    background: rgba(18, 22, 28, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(212, 175, 55, 0.4);
    border-radius: var(--radius-full);
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-gold-light);
    font-family: var(--font-serif);
    font-size: 0.84rem;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 16px rgba(212, 175, 55, 0.25);
    transition: all var(--transition-fast);
    animation: fadeInFloat 0.4s ease;
}

.floating-hud-btn i {
    width: 17px;
    height: 17px;
    color: var(--color-gold);
}

.floating-hud-btn:hover {
    background: rgba(26, 32, 40, 0.95);
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.5), 0 0 24px rgba(212, 175, 55, 0.45);
}

.floating-hud-btn.hidden {
    display: none !important;
}

@keyframes fadeInFloat {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Bottom Hint */
.bottom-hint {
    align-self: center;
    background: var(--color-bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--border-glass);
    padding: 8px 22px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.83rem;
    color: var(--color-text-muted);
    pointer-events: none;
    box-shadow: var(--shadow-soft);
    animation: pulseSubtle 3s infinite;
}

.hint-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-gold);
    box-shadow: 0 0 8px var(--color-gold);
}

@keyframes pulseSubtle {
    0%, 100% { opacity: 0.85; }
    50% { opacity: 1; transform: translateY(-2px); }
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1000;
    background: rgba(5, 7, 9, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.modal-card {
    background: rgba(18, 22, 26, 0.94);
    border: var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    width: 90%;
    max-width: 520px;
    padding: 36px;
    position: relative;
    max-height: 88vh;
    overflow-y: auto;
    animation: modalAppear 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalAppear {
    from {
        opacity: 0;
        transform: scale(0.94) translateY(12px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.06);
    border: var(--border-glass);
    color: var(--color-text-muted);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    transform: rotate(90deg);
}

.modal-close-btn i {
    width: 18px;
    height: 18px;
}

.meditation-header {
    text-align: center;
    margin-bottom: 26px;
}

.zen-title {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    color: #fff;
    margin-bottom: 8px;
}

.zen-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* Zen Wisdom (禅語) Modal Card */
.wisdom-card {
    text-align: center;
    max-width: 480px;
    border: 1px solid rgba(212, 175, 55, 0.35);
    box-shadow: 0 0 35px rgba(212, 175, 55, 0.2);
}

.wisdom-badge {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(212, 175, 55, 0.15);
    border: 1px solid var(--color-gold);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-family: var(--font-serif);
    color: var(--color-gold-light);
    letter-spacing: 0.15em;
    margin-bottom: 22px;
}

.wisdom-calligraphy {
    margin-bottom: 20px;
}

.wisdom-kanji {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    font-weight: 900;
    letter-spacing: 0.2em;
    margin-right: -0.2em;
    color: #ffffff;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.25);
    margin-bottom: 8px;
}

.wisdom-reading {
    font-family: var(--font-serif);
    font-size: 0.95rem;
    color: var(--color-gold);
    letter-spacing: 0.18em;
    margin-bottom: 4px;
}

.wisdom-en {
    font-family: 'Cinzel', serif;
    font-size: 0.8rem;
    color: var(--color-text-dim);
    letter-spacing: 0.2em;
}

.wisdom-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.4), transparent);
    margin: 22px 0;
}

.wisdom-meaning {
    font-family: var(--font-serif);
    font-size: 0.98rem;
    line-height: 2.0;
    color: var(--color-text-main);
    padding: 0 10px;
    margin-bottom: 28px;
}

.next-quote-btn {
    width: 100%;
}

/* Breathing Circle */
.breath-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 32px 0;
}

.breath-circle-outer {
    width: 210px;
    height: 210px;
    border-radius: 50%;
    border: 1px dashed rgba(212, 175, 55, 0.3);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.breath-circle-inner {
    width: 85px;
    height: 85px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.45) 0%, rgba(212, 175, 55, 0.05) 70%, transparent 100%);
    box-shadow: 0 0 30px var(--color-gold-glow);
    transition: transform 4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 4s ease;
}

.breath-circle-inner.inhale {
    transform: scale(2.1);
    box-shadow: 0 0 50px rgba(212, 175, 55, 0.7);
}

.breath-circle-inner.hold {
    transform: scale(2.1);
    filter: brightness(1.2);
}

.breath-circle-inner.exhale {
    transform: scale(1.0);
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.2);
}

.breath-text-container {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    pointer-events: none;
}

.breath-instruction {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: #fff;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.7);
}

.breath-counter {
    font-family: 'Cinzel', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-gold);
    margin-top: 4px;
}

.meditation-controls {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.duration-selector {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.88rem;
    color: var(--color-text-muted);
}

.duration-btns {
    display: flex;
    gap: 8px;
}

.dur-btn {
    background: rgba(255, 255, 255, 0.05);
    border: var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--color-text-main);
    padding: 6px 14px;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dur-btn.active {
    background: var(--color-gold);
    color: #111;
    font-weight: 600;
    border-color: var(--color-gold);
}

.meditation-action-group {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
}

.zen-primary-btn {
    background: linear-gradient(135deg, var(--color-gold) 0%, #aa8210 100%);
    color: #111;
    border: none;
    border-radius: var(--radius-full);
    padding: 13px 24px;
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 20px var(--color-gold-glow);
    transition: all var(--transition-fast);
}

.zen-primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 26px rgba(212, 175, 55, 0.5);
}

.zen-bell-btn {
    background: rgba(255, 255, 255, 0.06);
    border: var(--border-glass);
    border-radius: var(--radius-full);
    color: var(--color-gold-light);
    padding: 12px 20px;
    font-family: var(--font-serif);
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.zen-bell-btn:hover {
    background: rgba(212, 175, 55, 0.15);
    border-color: var(--color-gold);
    transform: translateY(-2px);
}

/* Audio Mixer List */
.audio-mixer-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mixer-item {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.mixer-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.86rem;
}

.mixer-name {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-main);
}

.mixer-name i {
    width: 16px;
    height: 16px;
    color: var(--color-gold);
}

.mixer-val {
    font-family: 'Cinzel', serif;
    font-size: 0.85rem;
    color: var(--color-gold-light);
}

/* Help Content */
.help-content {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.help-section h4 {
    font-family: var(--font-serif);
    font-size: 0.98rem;
    color: var(--color-gold-light);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.help-section h4 i {
    width: 17px;
    height: 17px;
    color: var(--color-gold);
}

.help-section p {
    font-size: 0.84rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* Flash Screen Effect */
.flash-effect {
    position: fixed;
    inset: 0;
    background: #ffffff;
    opacity: 0;
    pointer-events: none;
    z-index: 99999;
    transition: opacity 0.5s ease-out;
}

.flash-effect.active {
    opacity: 0.85;
    transition: none;
}

/* =========================================
   Active Header Buttons (Timelapse & Breathing)
   ========================================= */
#timelapse-toggle-btn.active {
    background: rgba(245, 158, 11, 0.25);
    border-color: #f59e0b;
    color: #fbbf24;
    box-shadow: 0 0 16px rgba(245, 158, 11, 0.4);
}

#breathing-btn.active {
    background: rgba(56, 189, 248, 0.25);
    border-color: #38bdf8;
    color: #38bdf8;
    box-shadow: 0 0 16px rgba(56, 189, 248, 0.4);
}

/* =========================================
   Mindfulness Breathing HUD (調息ガイド)
   ========================================= */
.breathing-overlay {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1050;
    pointer-events: auto;
    animation: fadeInSlideUp 0.4s ease-out;
}

.breathing-overlay.hidden {
    display: none;
}

.breathing-hud-card {
    position: relative;
    background: rgba(13, 20, 24, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(56, 189, 248, 0.35);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6), 0 0 24px rgba(56, 189, 248, 0.2);
    padding: 22px 32px;
    width: 380px;
    max-width: 90vw;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.breathing-title-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.breathing-sub {
    font-family: 'Cinzel', serif;
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    color: #38bdf8;
}

.breathing-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-main);
    letter-spacing: 0.1em;
}

.breathing-desc {
    font-size: 0.76rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.breathing-circle-wrapper {
    position: relative;
    width: 140px;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 6px 0;
}

.breathing-outer-ring {
    position: absolute;
    inset: 4px;
    border-radius: 50%;
    border: 2px dashed rgba(56, 189, 248, 0.5);
    animation: spinSlow 30s linear infinite;
}

.breathing-inner-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.breathing-phase-text {
    font-family: var(--font-serif);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-main);
    transition: color 0.3s;
}

.breathing-timer-text {
    font-family: 'Cinzel', serif;
    font-size: 1.7rem;
    font-weight: 700;
    color: #38bdf8;
    line-height: 1.1;
    margin-top: 2px;
}

.breathing-phases-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
}

.phase-step {
    padding: 4px 10px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text-muted);
    font-family: var(--font-serif);
    transition: all 0.3s ease;
}

.phase-step.active {
    background: rgba(56, 189, 248, 0.22);
    border: 1px solid rgba(56, 189, 248, 0.6);
    color: #38bdf8;
    font-weight: 600;
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.3);
}

.phase-arrow {
    color: rgba(255, 255, 255, 0.25);
    font-size: 0.7rem;
}

/* =========================================
   Koi Zukan Card (錦鯉の鑑賞・図鑑カード)
   ========================================= */
.koi-zukan-card {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 330px;
    max-width: 90vw;
    background: rgba(14, 20, 26, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(212, 175, 55, 0.38);
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.65), 0 0 20px rgba(212, 175, 55, 0.15);
    padding: 22px 20px 18px 20px;
    z-index: 1040;
    pointer-events: auto;
    animation: fadeInSlideUp 0.35s ease-out;
}

.koi-zukan-card.hidden {
    display: none;
}

.koi-card-badge {
    position: absolute;
    top: 14px;
    left: 18px;
    background: linear-gradient(135deg, #b91c1c, #dc2626);
    color: #fff;
    font-family: var(--font-serif);
    font-size: 0.68rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 0.1em;
    box-shadow: 0 2px 6px rgba(185, 28, 28, 0.4);
}

.koi-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-top: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.koi-naming {
    display: flex;
    flex-direction: column;
}

.koi-reading {
    font-family: var(--font-serif);
    font-size: 0.72rem;
    color: var(--color-gold-light);
    letter-spacing: 0.08em;
}

.koi-name {
    font-family: var(--font-serif);
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--color-text-main);
    letter-spacing: 0.05em;
    line-height: 1.2;
}

.koi-size {
    font-family: 'Cinzel', serif;
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.koi-card-body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 12px 0 14px 0;
}

.koi-info-row {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.koi-label {
    font-size: 0.68rem;
    color: var(--color-gold);
    font-family: var(--font-serif);
    letter-spacing: 0.08em;
}

.koi-text {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    line-height: 1.45;
}

.koi-card-actions {
    display: flex;
}

.koi-feed-btn {
    width: 100%;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(212, 175, 55, 0.35));
    border: 1px solid var(--color-gold);
    color: var(--color-gold-light);
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-serif);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.koi-feed-btn:hover {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.35), rgba(212, 175, 55, 0.5));
    color: #fff;
    box-shadow: 0 0 12px rgba(212, 175, 55, 0.3);
}

.koi-feed-btn i {
    width: 15px;
    height: 15px;
}

/* =========================================
   Save / Load & Share Modal (作庭の記録)
   ========================================= */
.save-modal-card {
    max-width: 620px;
    width: 95vw;
}

.save-slots-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.save-slot-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: all var(--transition-fast);
}

.save-slot-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(212, 175, 55, 0.35);
}

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

.slot-badge {
    font-family: var(--font-serif);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-gold-light);
    background: rgba(212, 175, 55, 0.15);
    padding: 2px 8px;
    border-radius: 4px;
}

.slot-time {
    font-size: 0.74rem;
    color: var(--color-text-muted);
}

.slot-content {
    display: flex;
}

.slot-name-input {
    width: 100%;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    color: var(--color-text-main);
    font-family: var(--font-serif);
    font-size: 0.84rem;
    padding: 6px 10px;
    outline: none;
    transition: border-color var(--transition-fast);
}

.slot-name-input:focus {
    border-color: var(--color-gold);
}

.slot-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.slot-btn {
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-serif);
    font-size: 0.78rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slot-save-btn {
    background: rgba(212, 175, 55, 0.15);
    border: 1px solid rgba(212, 175, 55, 0.4);
    color: var(--color-gold-light);
}

.slot-save-btn:hover {
    background: rgba(212, 175, 55, 0.3);
    color: #fff;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.2);
}

.slot-load-btn {
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.35);
    color: #7dd3fc;
}

.slot-load-btn:hover:not(:disabled) {
    background: rgba(56, 189, 248, 0.25);
    color: #fff;
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.2);
}

.slot-load-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--color-text-muted);
}

.slot-btn i {
    width: 14px;
    height: 14px;
}

.export-import-section {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 0.88rem;
    color: var(--color-gold-light);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 2px;
}

.section-title i {
    width: 15px;
    height: 15px;
}

.code-export-row,
.code-import-row {
    display: flex;
    gap: 8px;
}

.export-input {
    flex: 1;
    background: rgba(0, 0, 0, 0.28);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    color: var(--color-text-main);
    font-family: monospace;
    font-size: 0.78rem;
    padding: 7px 10px;
    outline: none;
}

.code-action-btn {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-text-main);
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-serif);
    font-size: 0.78rem;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.code-action-btn:hover:not(:disabled) {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--color-gold);
    color: #fff;
}

.code-action-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

@keyframes spinSlow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes fadeInSlideUp {
    from {
        opacity: 0;
        transform: translate(-50%, 15px);
    }
    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

.koi-zukan-card {
    animation: fadeInSlideRight 0.35s ease-out;
}

@keyframes fadeInSlideRight {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 960px) {
    #ui-layer { padding: 16px; }
    .rake-panel, .build-panel, .atmosphere-panel { width: 220px; }
    .mode-toolbar { top: 80px; }
}

@media (max-width: 768px) {
    .zen-header { flex-wrap: wrap; gap: 10px; }
    .header-brand { padding: 6px 14px 6px 10px; }
    .brand-title { font-size: 1rem; }
    .header-status { order: 3; width: 100%; justify-content: center; }
    .rake-panel, .build-panel {
        top: auto;
        bottom: 70px;
        left: 16px;
        width: calc(100% - 32px);
        max-height: 200px;
        overflow-y: auto;
    }
    .atmosphere-panel { display: none; }
    .bottom-hint { display: none; }
    .header-actions {
        order: 2;
        max-width: calc(100vw - 32px);
        overflow-x: auto;
        padding-bottom: 4px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        gap: 6px;
    }
    .header-actions::-webkit-scrollbar {
        display: none;
    }
}

/* ==========================================================================
   お賽銭・ご支援（Buy Me a Coffee / Saisen Modal）
   ========================================================================== */
.saisen-header-btn {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.32) 0%, rgba(184, 134, 11, 0.2) 100%) !important;
    border: 1px solid rgba(212, 175, 55, 0.65) !important;
    color: var(--color-gold-light) !important;
    font-weight: 600;
    box-shadow: 0 0 16px rgba(212, 175, 55, 0.3);
    position: relative;
    overflow: hidden;
    cursor: pointer !important;
    pointer-events: auto !important;
    flex-shrink: 0;
    z-index: 20;
    -webkit-tap-highlight-color: transparent;
}

.saisen-header-btn * {
    pointer-events: none !important;
}

.saisen-header-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transform: rotate(45deg);
    animation: saisenGlowSweep 4s ease-in-out infinite;
    pointer-events: none !important;
}

@keyframes saisenGlowSweep {
    0%, 70% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.saisen-header-btn:hover,
.saisen-header-btn:active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.5) 0%, rgba(212, 175, 55, 0.3) 100%) !important;
    border-color: var(--color-gold) !important;
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 0 24px rgba(212, 175, 55, 0.55) !important;
}

.saisen-header-btn i {
    color: #ffd700 !important;
}

.saisen-modal-card {
    max-width: 520px;
    width: 90%;
    max-height: 88vh;
    overflow-y: auto;
    padding: 32px 28px;
    background: rgba(16, 20, 24, 0.92);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(212, 175, 55, 0.35);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7), 0 0 30px rgba(212, 175, 55, 0.15);
}

.saisen-header {
    text-align: center;
    margin-bottom: 22px;
}

.saisen-badge-enso {
    width: 58px;
    height: 58px;
    margin: 0 auto 12px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.2) 0%, rgba(255, 255, 255, 0.02) 70%);
    border: 2px solid var(--color-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px var(--color-gold-glow);
}

.saisen-badge-icon {
    font-size: 1.8rem;
    line-height: 1;
}

.saisen-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.saisen-message-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    font-size: 0.88rem;
    line-height: 1.7;
    color: #e2e8f0;
}

.saisen-p + .saisen-p {
    margin-top: 10px;
}

.saisen-message-card strong {
    color: var(--color-gold-light);
    font-weight: 600;
}

.saisen-usage-box {
    background: rgba(212, 175, 55, 0.07);
    border: 1px solid rgba(212, 175, 55, 0.22);
    border-radius: var(--radius-md);
    padding: 14px 18px;
}

.usage-title {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-gold);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.usage-title i {
    width: 14px;
    height: 14px;
}

.usage-list {
    list-style: none;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    padding-left: 0;
}

.usage-list li {
    position: relative;
    padding-left: 14px;
    margin-bottom: 4px;
}

.usage-list li::before {
    content: '•';
    color: var(--color-gold);
    position: absolute;
    left: 2px;
    top: 0;
}

/* CTA 支援ボタン */
.saisen-actions {
    margin-top: 4px;
}

.saisen-cta-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    background: linear-gradient(135deg, #2e7d32 0%, #1b5e20 40%, #144618 100%);
    border: 1px solid rgba(129, 199, 132, 0.4);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    text-decoration: none;
    color: #ffffff;
    box-shadow: 0 8px 24px rgba(27, 94, 32, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.saisen-cta-btn:hover {
    background: linear-gradient(135deg, #388e3c 0%, #2e7d32 40%, #1b5e20 100%);
    border-color: #a5d6a7;
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 32px rgba(27, 94, 32, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.cta-cup-icon {
    font-size: 2rem;
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.4));
}

.cta-text-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    text-align: left;
}

.cta-title {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.05em;
}

.cta-sub {
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.85);
    margin-top: 2px;
}

.cta-arrow {
    width: 20px;
    height: 20px;
    color: rgba(255, 255, 255, 0.85);
    transition: transform var(--transition-fast);
}

.saisen-cta-btn:hover .cta-arrow {
    transform: translateX(4px);
    color: #ffffff;
}

/* QRコードセクション */
.saisen-qr-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: rgba(0, 0, 0, 0.25);
    border: 1px dashed rgba(212, 175, 55, 0.25);
    border-radius: var(--radius-md);
    padding: 12px 16px;
}

.qr-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.qr-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-gold-light);
    display: flex;
    align-items: center;
    gap: 6px;
}

.qr-label i {
    width: 15px;
    height: 15px;
}

.qr-hint {
    font-size: 0.72rem;
    color: var(--color-text-dim);
    line-height: 1.4;
}

.qr-img-wrapper {
    background: #ffffff;
    padding: 6px;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    flex-shrink: 0;
}

.saisen-qr-code {
    width: 80px;
    height: 80px;
    display: block;
}

.saisen-footer-note {
    font-size: 0.72rem;
    color: var(--color-text-dim);
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    line-height: 1.4;
}

.saisen-footer-note i {
    width: 14px;
    height: 14px;
    color: #10b981;
}

@media (max-width: 600px) {
    .saisen-qr-section {
        flex-direction: column;
        text-align: center;
    }
    .qr-info {
        align-items: center;
    }
}