:root {
    --bg-color: #000000;
    --accent-color: #ffffff;
    --ui-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --text-color: #ffffff;
    --primary-btn: #ffffff;
    --primary-btn-text: #000000;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

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

.app-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#transformLayer {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    will-change: transform;
}

.background-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.background-layer img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

canvas {
    display: block;
    cursor: crosshair;
    background: transparent;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    opacity: 0.5;
}

.ui-overlay {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    width: 95%;
    max-width: 800px;
}

.glass {
    background: var(--ui-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.toolbar {
    padding: 0.8rem 1.2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.tool-group {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-grow: 1;
    min-width: 200px;
}

.tool-group label {
    font-size: 0.9rem;
    font-weight: 600;
    opacity: 0.8;
}

input[type="range"] {
    flex-grow: 1;
    accent-color: var(--accent-color);
    cursor: pointer;
}

#sizeValue {
    font-size: 0.8rem;
    min-width: 40px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.divider {
    width: 1px;
    height: 24px;
    background: var(--glass-border);
}

.btn {
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 12px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn.primary {
    background-color: var(--primary-btn);
    color: var(--primary-btn-text);
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.btn.secondary {
    background: transparent;
    color: var(--accent-color);
    border: 1px solid var(--glass-border);
}

.btn.secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

.btn:active {
    transform: translateY(0);
}

.hint {
    position: absolute;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.4;
    font-size: 0.8rem;
    pointer-events: none;
    letter-spacing: 0.1rem;
    text-transform: uppercase;
}

@media (max-width: 600px) {
    .toolbar {
        padding: 0.6rem;
        gap: 0.8rem;
    }

    .tool-group {
        width: 100%;
        min-width: 100%;
        order: -1;
    }

    .divider {
        display: none;
    }

    .ui-overlay {
        bottom: 1rem;
        width: 98%;
    }

    .btn {
        padding: 0.5rem 0.8rem;
        font-size: 0.85rem;
        flex: 1 1 auto;
        text-align: center;
    }
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}

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

.modal-content {
    width: 90%;
    max-width: 600px;
    padding: 2rem;
    position: relative;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
}

.modal-body {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-body img {
    max-width: 100%;
    max-height: 60vh;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.modal-footer {
    display: flex;
    justify-content: center;
}

/* Loading Spinner Styles */
.loader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.modern-spinner {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid #ffffff;
    border-radius: 50%;
    animation: spin 1s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    position: relative;
}

.modern-spinner::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top: 3px solid rgba(255, 255, 255, 0.5);
    filter: blur(4px);
}

.loader-content p {
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 0.3rem;
    text-transform: uppercase;
    opacity: 0.7;
    margin-top: 1rem;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Side Menu Styles */
.side-menu {
    position: absolute;
    top: 2rem;
    left: 2rem;
    z-index: 10;
    padding: 1.5rem;
    width: 180px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.menu-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    opacity: 0.6;
    margin-bottom: 0.5rem;
}

.fruit-options {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.fruit-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.fruit-item img {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
}

.fruit-item span {
    font-size: 0.9rem;
    font-weight: 400;
    opacity: 0.8;
}

.fruit-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.fruit-item.active {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--glass-border);
}

.fruit-item.active span {
    opacity: 1;
    font-weight: 600;
}

@media (max-width: 768px) {
    .side-menu {
        top: 1rem;
        left: 1rem;
        width: calc(100% - 2rem);
        flex-direction: row;
        align-items: center;
        overflow-x: auto;
        padding: 0.8rem;
    }

    .menu-title {
        display: none;
    }

    .fruit-options {
        flex-direction: row;
        width: 100%;
    }

    .fruit-item span {
        display: none;
    }
}