:root {
    --background: #fafaf8;
    --foreground: #182230;
    --card: #ffffff;
    --muted: #f1f0ec;
    --muted-foreground: #455365;
    --border: #e3e1da;
    --primary: #275dad;
    --primary-hover: #1f4c8f;
    --primary-foreground: #ffffff;
    --accent: #e9eff9;
    --success: #1f7a4d;
    --danger: #b42318;
    --checker-a: #ffffff;
    --checker-b: #e6e6e6;
    --radius: 16px;
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --background: #10151d;
        --foreground: #e8ecf2;
        --card: #18202b;
        --muted: #1f2935;
        --muted-foreground: #a6b1c0;
        --border: #2b3644;
        --primary: #6b9be3;
        --primary-hover: #8ab0ea;
        --primary-foreground: #0d1520;
        --accent: #1c2a40;
        --success: #5cc48e;
        --danger: #f97066;
        --checker-a: #2a333f;
        --checker-b: #1e2630;
        color-scheme: dark;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--foreground);
    font: 16px/1.6 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a {
    color: var(--primary);
}

.wrap {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 16px;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 0;
}

.brand {
    color: var(--foreground);
    font-weight: 700;
    text-decoration: none;
}

.language-picker {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.language-picker select {
    appearance: none;
    min-height: 36px;
    padding: 6px 36px 6px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--card);
    color: var(--foreground);
    font: inherit;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.15s, transform 0.1s;
}

.language-picker select:hover {
    background: var(--muted);
}

.language-picker select:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

.language-picker::after {
    content: "";
    position: absolute;
    right: 15px;
    width: 7px;
    height: 7px;
    margin-top: -4px;
    border-right: 2px solid var(--muted-foreground);
    border-bottom: 2px solid var(--muted-foreground);
    transform: rotate(45deg);
    pointer-events: none;
}

.hero {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 40px;
    align-items: center;
    padding: 32px 0 48px;
}

h1 {
    margin: 0 0 16px;
    font-size: clamp(32px, 5vw, 52px);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.subtitle {
    margin: 0 0 20px;
    color: var(--muted-foreground);
    font-size: 18px;
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.badges li {
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--accent);
    font-size: 14px;
    font-weight: 500;
}

.tool {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card);
    box-shadow: 0 12px 40px rgb(16 24 40 / 0.08);
}

.dropzone {
    display: grid;
    justify-items: center;
    gap: 12px;
    padding: 40px 16px;
    border: 2px dashed var(--border);
    border-radius: 12px;
    text-align: center;
    transition: border-color 0.15s, background 0.15s;
}

.dropzone.is-dragging {
    border-color: var(--primary);
    background: var(--accent);
}

.dropzone p {
    margin: 0;
    color: var(--muted-foreground);
}

.dropzone .formats {
    font-size: 13px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 10px 20px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--card);
    color: var(--foreground);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s, transform 0.1s;
}

.button:hover {
    background: var(--muted);
}

.button-primary {
    border-color: var(--primary);
    background: var(--primary);
    color: var(--primary-foreground);
}

.button-primary:hover {
    border-color: var(--primary-hover);
    background: var(--primary-hover);
}

.button-large {
    min-height: 56px;
    padding: 14px 32px;
    font-size: 18px;
}

.button:focus-visible,
.swatch:focus-visible,
.sample:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

.samples {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 16px;
    color: var(--muted-foreground);
    font-size: 14px;
}

.sample {
    width: 56px;
    height: 56px;
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--muted);
    cursor: pointer;
}

.sample img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.stage {
    --reveal: 100%;
    position: relative;
    display: grid;
    overflow: hidden;
    border-radius: 12px;
    background: var(--muted);
}

.stage.is-transparent {
    background: repeating-conic-gradient(var(--checker-a) 0 25%, var(--checker-b) 0 50%) 0 0 / 20px 20px;
}

.stage > img,
.stage > canvas {
    grid-area: 1 / 1;
    display: block;
    width: 100%;
    height: auto;
    max-height: 60vh;
    object-fit: contain;
}

.stage > img {
    clip-path: inset(0 calc(100% - var(--reveal)) 0 0);
}

.stage.is-processing > img {
    animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
    50% {
        opacity: 0.55;
    }
}

.crop-box {
    position: absolute;
    border: 2px solid #ffffff;
    box-shadow: 0 0 0 1px rgb(0 0 0 / 0.4), 0 0 0 100vmax rgb(0 0 0 / 0.45);
    cursor: move;
    touch-action: none;
}

.crop-handle {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    background: #ffffff;
}

.crop-handle[data-handle="nw"] {
    top: -11px;
    left: -11px;
    cursor: nwse-resize;
}

.crop-handle[data-handle="ne"] {
    top: -11px;
    right: -11px;
    cursor: nesw-resize;
}

.crop-handle[data-handle="sw"] {
    bottom: -11px;
    left: -11px;
    cursor: nesw-resize;
}

.crop-handle[data-handle="se"] {
    right: -11px;
    bottom: -11px;
    cursor: nwse-resize;
}

.chips,
.size {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 0;
    border: 0;
}

.chips legend,
.size legend {
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
}

.chip {
    min-height: 36px;
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--card);
    color: var(--foreground);
    font: inherit;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
}

.chip:hover {
    background: var(--muted);
}

.chip[aria-pressed="true"] {
    border-color: var(--primary);
    background: var(--accent);
    color: var(--primary);
}

.button:active,
.chip:active,
.sample:active,
.swatch:active,
.language-picker select:active {
    transform: scale(0.96);
}

@media (prefers-reduced-motion: reduce) {
    .button:active,
    .chip:active,
    .sample:active,
    .swatch:active,
    .language-picker select:active {
        transform: none;
        filter: brightness(0.92);
    }
}

.chip:focus-visible,
.size input:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

.size label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--muted-foreground);
    font-size: 14px;
}

.size input {
    width: 96px;
    min-height: 36px;
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card);
    color: var(--foreground);
    font: inherit;
}

.compare {
    width: 100%;
    margin: 12px 0 0;
    accent-color: var(--primary);
}

.compare-labels {
    display: flex;
    justify-content: space-between;
    color: var(--muted-foreground);
    font-size: 13px;
}

.status {
    display: grid;
    gap: 8px;
    margin-top: 16px;
    font-weight: 500;
}

.status.is-error {
    color: var(--danger);
}

.status progress {
    width: 100%;
    height: 8px;
    accent-color: var(--primary);
}

.status small {
    color: var(--muted-foreground);
    font-weight: 400;
}

.controls {
    display: grid;
    gap: 16px;
    margin-top: 16px;
}

.swatches {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 0;
    border: 0;
}

.swatches legend {
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
}

.swatch {
    position: relative;
    width: 36px;
    height: 36px;
    padding: 0;
    border: 2px solid var(--border);
    border-radius: 50%;
    cursor: pointer;
}

.swatch[aria-pressed="true"] {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--card), 0 0 0 4px var(--primary);
}

.swatch-transparent {
    background: repeating-conic-gradient(#ffffff 0 25%, #cccccc 0 50%) 0 0 / 12px 12px;
}

.swatch-custom {
    overflow: hidden;
    background: conic-gradient(red, yellow, lime, aqua, blue, magenta, red);
}

.swatch-custom input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.privacy-note {
    margin: 16px 0 0;
    color: var(--success);
    font-size: 14px;
    font-weight: 500;
    text-align: center;
}

.content section {
    padding: 40px 0;
    border-top: 1px solid var(--border);
}

h2 {
    margin: 0 0 24px;
    font-size: clamp(24px, 3.5vw, 32px);
    line-height: 1.2;
    letter-spacing: -0.01em;
}

h3 {
    margin: 0 0 8px;
    font-size: 18px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.card {
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--card);
}

.card p {
    margin: 0;
    color: var(--muted-foreground);
}

.step-number {
    display: inline-grid;
    place-items: center;
    width: 32px;
    height: 32px;
    margin-bottom: 12px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--primary-foreground);
    font-weight: 700;
}

.uses {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.uses li {
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--card);
}

.faq details {
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.faq summary {
    font-weight: 600;
    cursor: pointer;
}

.faq details p {
    margin: 8px 0 0;
    color: var(--muted-foreground);
}

.site-footer {
    padding: 32px 0 48px;
    border-top: 1px solid var(--border);
    color: var(--muted-foreground);
    font-size: 14px;
}

.site-footer ul {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    margin: 8px 0 16px;
    padding: 0;
    list-style: none;
}

[hidden] {
    display: none !important;
}

@media (max-width: 860px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 24px;
        padding-top: 16px;
    }

    .tool {
        padding: 16px;
    }

    .samples span {
        flex-basis: 100%;
        text-align: center;
    }
}

.breadcrumbs {
    color: var(--muted-foreground);
    font-size: 14px;
}

.breadcrumbs a {
    color: var(--muted-foreground);
}

.breadcrumbs .brand {
    color: var(--foreground);
    font-size: 16px;
}