/* Recommended .hidden for effects/characters to avoid reflows */
.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Strict display none for structural elements if needed explicitly */
.d-none {
    display: none !important;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 900;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;
    width: calc(900 * var(--px));
    /* Fixed width */
    max-width: none;
    min-width: 0;
    height: calc(800 * var(--px));
    max-height: calc(900 * var(--px));
    border-radius: calc(20 * var(--px));
    box-shadow: 0 calc(4 * var(--px)) calc(10 * var(--px)) rgba(0, 0, 0, 0.3);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    will-change: transform, opacity;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
    animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-header {
    padding: calc(30 * var(--px));
    border-bottom: calc(2 * var(--px)) solid #f1f3f5;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    background: #fff;
    z-index: 2;
}

.modal-header h2 {
    margin: 0;
    font-family: var(--font-heading);
    font-size: calc(40 * var(--px));
    /* 2.5rem */
    color: #333;
}

.close-btn {
    background: none;
    border: none;
    font-size: calc(48 * var(--px));
    /* 3rem */
    cursor: pointer;
    color: #868e96;
    line-height: 1;
}

@media (hover: hover) {
    .close-btn:hover {
        color: #333;
    }
}

.skin-grid {
    padding: calc(30 * var(--px));
    display: grid;
    contain: content;
    grid-template-columns: repeat(4, 1fr);
    /* Fixed 4 columns */
    gap: calc(40 * var(--px)) calc(5 * var(--px));
    overflow-y: auto;
    flex: 1;
    scrollbar-width: auto;
    box-sizing: border-box;
}

/* ... scrollbar styles ... */
.skin-grid::-webkit-scrollbar {
    width: calc(16 * var(--px));
}

.skin-grid::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    border-radius: calc(10 * var(--px));
    margin: calc(5 * var(--px));
}

.skin-grid::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-color), #ffbb00);
    border-radius: calc(10 * var(--px));
    border: calc(3 * var(--px)) solid rgba(0, 0, 0, 0.05);
    box-shadow: inset 0 0 calc(6 * var(--px)) rgba(0, 0, 0, 0.3);
}

@media (hover: hover) {
    .skin-grid::-webkit-scrollbar-thumb:hover {
        background: linear-gradient(180deg, #ffbb00, var(--accent-color));
    }
}

.skin-item {
    background: #f8f9fa;
    border: calc(3 * var(--px)) solid #e9ecef;
    border-radius: calc(16 * var(--px));
    padding: calc(15 * var(--px));
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    position: relative;
    height: auto;
    min-height: calc(220 * var(--px));
    aspect-ratio: 1 / 1.25;
    box-sizing: border-box;
    content-visibility: auto;
    contain-intrinsic-size: calc(220 * var(--px));
}

@media (hover: hover) {
    .skin-item:hover {
        transform: translateY(calc(-5 * var(--px)));
        box-shadow: 0 calc(2 * var(--px)) calc(5 * var(--px)) rgba(0, 0, 0, 0.1);
        border-color: #ced4da;
    }
}

.skin-item.active {
    border-color: var(--accent-color);
    background: #fff9db;
    box-shadow: 0 0 0 calc(2 * var(--px)) rgba(255, 159, 28, 0.2);
}

.skin-item.locked {
    opacity: 0.8;
    cursor: default;
    background: #e9ecef;
    border-color: #dee2e6;
}

.skin-item.locked:hover {
    transform: none;
    box-shadow: none;
    border-color: #dee2e6;
}

.skin-item.locked .skin-preview {
    filter: grayscale(100%) opacity(0.6);
}

.skin-item.locked .skin-name {
    color: #adb5bd;
}

.unlock-hint {
    font-size: calc(14 * var(--px));
    color: #e03131;
    font-weight: 700;
    margin-top: calc(5 * var(--px));
    text-align: center;
}

.skin-preview {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    margin-bottom: calc(10 * var(--px));
    filter: drop-shadow(0 calc(4 * var(--px)) calc(6 * var(--px)) rgba(0, 0, 0, 0.1));
}

.skin-name {
    font-weight: 700;
    font-size: calc(19.2 * var(--px));
    /* 1.2rem */
    text-align: center;
    color: #495057;
    margin-bottom: calc(10 * var(--px));
    overflow-wrap: break-word;
    word-break: break-word;
    hyphens: auto;
    position: relative;
    z-index: 2;
    line-height: 1.2;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.select-btn {
    margin-top: auto;
    background: #333;
    color: white;
    border: none;
    padding: calc(10 * var(--px)) calc(20 * var(--px));
    border-radius: calc(20 * var(--px));
    font-weight: 600;
    font-size: calc(17.6 * var(--px));
    /* 1.1rem */
    cursor: pointer;
    width: 100%;
    transition: background 0.2s;
}

.skin-item.active .select-btn {
    background: var(--accent-color);
    cursor: default;
}

@media (hover: hover) {
    .skin-item:hover .select-btn {
        background: #000;
    }
}

@media (hover: hover) {
    .skin-item.active:hover .select-btn {
        background: var(--accent-color);
    }
}

/* Settings Modal */
.settings-content {
    display: flex;
    flex-direction: column;
    gap: calc(2.5 * 16 * var(--px));
    /* 2.5rem */
    padding: calc(40 * var(--px));
    overflow-y: auto;
    flex: 1;
    scrollbar-width: auto;
}

.settings-content::-webkit-scrollbar {
    width: calc(16 * var(--px));
}

.settings-content::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    border-radius: calc(10 * var(--px));
    margin: calc(5 * var(--px));
}

.settings-content::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-color), #ffbb00);
    border-radius: calc(10 * var(--px));
    border: calc(3 * var(--px)) solid rgba(0, 0, 0, 0.05);
    box-shadow: inset 0 0 calc(6 * var(--px)) rgba(0, 0, 0, 0.3);
}

@media (hover: hover) {
    .settings-content::-webkit-scrollbar-thumb:hover {
        background: linear-gradient(180deg, #ffbb00, var(--accent-color));
    }
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: calc(16 * var(--px));
    /* 1rem */
}

.setting-item label {
    font-size: calc(28.8 * var(--px));
    /* 1.8rem */
    color: var(--text-color);
    font-weight: 600;
}

/* Custom Range Slider */
input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    background: transparent;
}

input[type=range]:focus {
    outline: none;
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: calc(24 * var(--px));
    cursor: pointer;
    background: linear-gradient(90deg, var(--accent-color) 0%, #e2e8f0 0%);
    background-color: #e2e8f0;
    border-radius: calc(12 * var(--px));
    border: calc(2 * var(--px)) solid #cbd5e0;
}

input[type=range]::-webkit-slider-thumb {
    height: calc(48 * var(--px));
    width: calc(48 * var(--px));
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    margin-top: calc(-14 * var(--px));
    box-shadow: 0 calc(4 * var(--px)) calc(10 * var(--px)) rgba(0, 0, 0, 0.2);
    border: calc(4 * var(--px)) solid var(--accent-color);
    transition: transform 0.1s, background-color 0.2s;
}

@media (hover: hover) {
    input[type=range]::-webkit-slider-thumb:hover {
        transform: scale(1.15);
        background-color: #f7fafc;
    }
}

input[type=range]:focus::-webkit-slider-runnable-track {
    background: rgba(0, 0, 0, 0.15);
}

input[type=range]::-moz-range-track {
    width: 100%;
    height: calc(24 * var(--px));
    cursor: pointer;
    background: #e2e8f0;
    border-radius: calc(12 * var(--px));
    border: calc(2 * var(--px)) solid #cbd5e0;
}

input[type=range]::-moz-range-thumb {
    height: calc(48 * var(--px));
    width: calc(48 * var(--px));
    border: calc(4 * var(--px)) solid var(--accent-color);
    border-radius: 50%;
    background: white;
    cursor: pointer;
    box-shadow: 0 calc(4 * var(--px)) calc(10 * var(--px)) rgba(0, 0, 0, 0.2);
    transition: transform 0.1s;
}

@media (hover: hover) {
    input[type=range]::-moz-range-thumb:hover {
        transform: scale(1.15);
    }
}

/* Toggle Switch */
.setting-item.row-layout {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: calc(80 * var(--px));
    height: calc(44 * var(--px));
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: calc(44 * var(--px));
}

.slider:before {
    position: absolute;
    content: "";
    height: calc(36 * var(--px));
    width: calc(36 * var(--px));
    left: calc(4 * var(--px));
    bottom: calc(4 * var(--px));
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

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

input:focus+.slider {
    box-shadow: 0 0 calc(1 * var(--px)) var(--accent-color);
}

input:checked+.slider:before {
    transform: translateX(calc(36 * var(--px)));
}

.music-select {
    width: 100%;
    padding: calc(10 * var(--px));
    border-radius: calc(10 * var(--px));
    border: calc(2 * var(--px)) solid #ccc;
    font-family: var(--font-heading);
    font-size: calc(20 * var(--px));
    background-color: #f8f9fa;
    color: #333;
    outline: none;
    cursor: pointer;
}

.music-select:focus {
    border-color: var(--accent-color);
}

/* Credits Modal */
.credits-content {
    padding: calc(40 * var(--px));
    text-align: center;
    color: #333;
    font-size: calc(24 * var(--px));
    overflow-y: auto;
    flex: 1;
}

.credits-content h3 {
    margin-top: 0;
    margin-bottom: calc(20 * var(--px));
    font-family: var(--font-heading);
    font-size: calc(32 * var(--px));
}

.credits-content p {
    margin-bottom: calc(15 * var(--px));
    line-height: 1.5;
}

.credits-content a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
}

@media (hover: hover) {
    .credits-content a:hover {
        text-decoration: underline;
    }
}

/* Settings Footer */
.settings-footer {
    padding: calc(30 * var(--px));
    border-top: calc(2 * var(--px)) solid #f1f3f5;
    display: flex;
    justify-content: center;
    background: #fff;
    flex-shrink: 0;
}

.std-btn {
    background: #333;
    color: white;
    border: none;
    padding: calc(12 * var(--px)) calc(30 * var(--px));
    border-radius: calc(25 * var(--px));
    font-weight: 600;
    font-size: calc(20 * var(--px));
    cursor: pointer;
    transition: transform 0.1s, background 0.2s;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
}

@media (hover: hover) {
    .std-btn:hover {
        background: var(--accent-color);
        transform: scale(1.05);
    }
}

.std-btn:active {
    transform: scale(0.95);
}

/* Ascension Modal Specifics */
.ascend-content {
    display: flex;
    flex-direction: column;
    padding: calc(40 * var(--px));
    text-align: center;
    gap: calc(30 * var(--px));
    height: 100%;
}

.ascend-warning {
    color: #e03131;
    font-weight: 700;
    font-size: calc(24 * var(--px));
    background: #fff5f5;
    padding: calc(15 * var(--px));
    border-radius: calc(10 * var(--px));
    border: calc(2 * var(--px)) solid #ffc9c9;
    margin: 0;
}

.ascend-stats {
    display: flex;
    flex-direction: column;
    gap: calc(20 * var(--px));
    background: #f8f9fa;
    padding: calc(30 * var(--px));
    border-radius: calc(15 * var(--px));
    border: calc(2 * var(--px)) solid #e9ecef;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    font-size: calc(28 * var(--px));
    color: #495057;
    font-weight: 600;
}

.stat-row span:last-child {
    font-family: var(--font-body);
}

.stat-row.total-row {
    margin-top: calc(10 * var(--px));
    padding-top: calc(20 * var(--px));
    border-top: calc(2 * var(--px)) dashed #dee2e6;
    font-size: calc(36 * var(--px));
    font-weight: 800;
    font-family: var(--font-body);
}

.gold-text {
    color: #fcc419;
    text-shadow: 0 calc(2 * var(--px)) calc(4 * var(--px)) rgba(0, 0, 0, 0.1);
}

.gain-text {
    color: #40c057;
}

.highlight {
    color: #495057;
}

.ascend-actions {
    margin-top: auto;
    display: flex;
    gap: calc(20 * var(--px));
    justify-content: center;
}

.std-btn.primary {
    background: linear-gradient(135deg, #fcc419 0%, #ff922b 100%);
    color: #fff;
    font-size: calc(24 * var(--px));
    padding: calc(15 * var(--px)) calc(40 * var(--px));
    box-shadow: 0 calc(4 * var(--px)) calc(15 * var(--px)) rgba(255, 166, 0, 0.4);
    flex: 1;
}

.std-btn.secondary {
    background: #e9ecef;
    color: #495057;
    flex: 1;
}

@media (hover: hover) {
    .std-btn.primary:hover {
        transform: translateY(calc(-3 * var(--px)));
        box-shadow: 0 calc(8 * var(--px)) calc(20 * var(--px)) rgba(255, 166, 0, 0.5);
    }

    .std-btn.secondary:hover {
        background: #ced4da;
        color: #333;
    }
}

.banner-container {
    width: 100%;
    min-height: calc(75 * var(--px));
    /* Approx 468x60 Banner */
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: calc(10 * var(--px));
    border-top: calc(2 * var(--px)) solid rgba(255, 255, 255, 0.1);
}