/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

body {
    font-family: 'Outfit', 'Noto Sans SC', sans-serif;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-color);
    transition: background-color 0.5s ease;
    position: relative;
}

/* Theme Variables */
.theme-light {
    --bg-color: #f7f7f7;
    --border-color: #000000;
    --panel-bg: rgba(255, 255, 255, 0.75);
    --panel-border: rgba(0, 0, 0, 0.1);
    --text-color: #333333;
    --label-color: #666666;
    --accent-color: #2563eb;
    --card-shadow: 0 4px 12px rgba(0,0,0,0.1);
    --grid-gap: 8px;
}

.theme-dark {
    --bg-color: #121212;
    --border-color: #000000;
    --panel-bg: rgba(20, 20, 20, 0.85);
    --panel-border: rgba(255, 255, 255, 0.1);
    --text-color: #ffffff;
    --label-color: #aaaaaa;
    --accent-color: #3b82f6;
    --card-shadow: 0 4px 20px rgba(0,0,0,0.5);
    --grid-gap: 8px;
}

.theme-neon {
    --bg-color: #0b0f19;
    --border-color: #38bdf8;
    --panel-bg: rgba(15, 23, 42, 0.85);
    --panel-border: rgba(56, 189, 248, 0.2);
    --text-color: #38bdf8;
    --label-color: #94a3b8;
    --accent-color: #06b6d4;
    --card-shadow: 0 0 15px rgba(56, 189, 248, 0.3);
    --grid-gap: 12px;
}

/* Photo Wall Container */
.photo-wall-container {
    --rows-count: 2;
    --col-height: calc((100vh - (var(--rows-count) + 1) * var(--grid-gap)) / var(--rows-count));

    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background-color: var(--bg-color);
    transition: background-color 0.5s ease;
    padding: var(--grid-gap) 0;
}

/* Scroll Tracks */
.track-row {
    width: 100%;
    height: var(--col-height);
    overflow: hidden;
    display: flex;
    align-items: center;
    position: relative;
    margin: 0;
    padding: 0;
}

.track-inner {
    display: flex;
    flex-direction: row;
    height: 100%;
    align-items: center;
    will-change: transform;
    animation-play-state: running;
}

.track-inner.paused {
    animation-play-state: paused !important;
}

/* Column Patterns */
.wall-column {
    height: 100%;
    flex-shrink: 0;
    margin: 0 calc(var(--grid-gap) / 2);
    display: grid;
    gap: var(--grid-gap);
}

.column-pattern-a {
    width: calc(0.68 * var(--col-height, 90vh));
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}

.column-pattern-b {
    width: calc(0.68 * var(--col-height, 90vh));
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1.05fr 1fr;
}

.column-pattern-c {
    width: calc(0.68 * var(--col-height, 90vh));
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1.05fr;
}

.column-pattern-d {
    width: calc(0.75 * var(--col-height, 90vh));
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
}

.column-pattern-e {
    width: calc(0.35 * var(--col-height, 90vh));
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
}

.span-2 {
    grid-column: span 2;
}

/* Photo Cards */
.photo-card {
    border: 6px solid var(--border-color);
    border-radius: 4px;
    background-color: #000;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), border-color 0.5s ease;
    cursor: pointer;
    width: 100%;
    height: 100%;
    position: relative;
}

.photo-card:hover {
    transform: scale(1.05);
    z-index: 5;
}

.photo-card img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

/* Animation Keyframes */
@keyframes scroll-left {
    0% {
        transform: translate3d(0, 0, 0);
    }
    100% {
        transform: translate3d(-50%, 0, 0);
    }
}

@keyframes scroll-right {
    0% {
        transform: translate3d(-50%, 0, 0);
    }
    100% {
        transform: translate3d(0, 0, 0);
    }
}

/* Foreground Character */
.foreground-container {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translate(-50%, 0);
    z-index: 100;
    pointer-events: none;
    height: 88vh;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    transform-origin: bottom center;
    will-change: transform;
    transition: opacity 0.5s ease;
}

.foreground-char {
    height: 100%;
    max-width: 90vw;
    object-fit: contain;
    filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.5));
    /* Float animation is added dynamically or via class */
    animation: float 6s ease-in-out infinite;
    transform-origin: bottom center;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
}

/* Control Panel Toggle Button */
.toggle-panel-btn {
    position: absolute;
    right: 25px;
    bottom: 25px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 200;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toggle-panel-btn:hover {
    transform: scale(1.1) rotate(45deg);
    background: #ffffff;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Control Panel */
.control-panel {
    position: absolute;
    right: 25px;
    bottom: 90px;
    width: 320px;
    background: var(--panel-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--panel-border);
    border-radius: 18px;
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.25);
    color: var(--text-color);
    z-index: 300;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    transform-origin: bottom right;
}

.control-panel.hide {
    opacity: 0;
    transform: scale(0.8) translate(20px, 20px);
    pointer-events: none;
}

.panel-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--panel-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h3 {
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.close-btn:hover {
    opacity: 1;
}

.panel-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.control-group label {
    font-size: 0.85rem;
    color: var(--label-color);
    font-weight: 500;
}

/* Range Inputs */
input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(0,0,0,0.1);
    border-radius: 3px;
    outline: none;
}

.theme-dark input[type="range"] {
    background: rgba(255,255,255,0.15);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    transition: transform 0.1s;
}

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

/* Switch Styles */
.switch-group {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider-round {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.15);
    transition: .3s;
    border-radius: 24px;
}

.theme-dark .slider-round {
    background-color: rgba(255,255,255,0.2);
}

.slider-round:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

input:checked + .slider-round {
    background-color: var(--accent-color);
}

input:checked + .slider-round:before {
    transform: translateX(20px);
}

/* Text Inputs */
input[type="text"] {
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--panel-border);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    outline: none;
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

.theme-light input[type="text"] {
    background: rgba(0, 0, 0, 0.05);
}

input[type="text"]:focus {
    border-color: var(--accent-color);
}

/* Theme Button Selector */
.theme-selector {
    display: flex;
    gap: 10px;
}

.theme-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.2s, border-color 0.2s;
}

.theme-btn:hover {
    transform: scale(1.1);
}

.theme-btn.active {
    transform: scale(1.15);
}

/* Action Buttons */
.action-btn {
    width: 100%;
    padding: 10px;
    border-radius: 10px;
    border: none;
    background: var(--accent-color);
    color: #ffffff;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.2s, transform 0.1s;
    font-size: 0.9rem;
}

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

.action-btn:active {
    transform: scale(0.98);
}

.panel-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--panel-border);
    text-align: center;
    font-size: 0.75rem;
    color: var(--label-color);
}

/* Fade effects for top/bottom overlay */
.photo-wall-container::before,
.photo-wall-container::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 40px;
    pointer-events: none;
    z-index: 10;
}

.photo-wall-container::before {
    top: 0;
    background: linear-gradient(to bottom, var(--bg-color), transparent);
}

.photo-wall-container::after {
    bottom: 0;
    background: linear-gradient(to top, var(--bg-color), transparent);
}

/* Hide floating/control interface in pure wallpaper mode */
.hide-controls .toggle-panel-btn {
    opacity: 0 !important;
    pointer-events: none;
}

/* Adapt for small screen dimensions */
@media (max-width: 768px) {
    .foreground-container {
        height: 70vh;
    }
    
    .control-panel {
        right: 15px;
        bottom: 80px;
        width: calc(100vw - 30px);
        max-width: 320px;
    }
}

/* Loading Overlay & Spinner */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-color);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease;
}

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

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

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

.loading-text {
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 500;
}