/* ホーム、ツール一覧、文字列、画像、色の画面固有表現を定義する。 */
.home-hero {
    min-height: 360px;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
    align-items: stretch;
    overflow: hidden;
    border: 1px solid rgba(215, 221, 230, 0.8);
    border-radius: 24px;
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.home-hero__copy {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: clamp(2rem, 5vw, 4.5rem);
}

.home-hero__copy h1 {
    margin: 0.5rem 0 1.25rem;
    font-size: clamp(2.1rem, 4.6vw, 3.45rem);
    line-height: 1.22;
    letter-spacing: 0.015em;
}

.home-hero__copy h1 span { display: block; }
.home-hero__copy p:not(.eyebrow) { margin: 0 0 1.6rem; color: var(--color-muted); font-size: 1.03rem; }

.home-hero__visual {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(2rem, 5vw, 4rem);
    border-left: 1px solid var(--color-border);
    background:
        linear-gradient(135deg, rgba(255, 240, 232, 0.72), rgba(255, 255, 255, 0.9)),
        repeating-linear-gradient(45deg, transparent 0 14px, rgba(32, 38, 49, 0.035) 14px 15px);
}

.home-hero__visual img { width: min(100%, 500px); }

.eyebrow {
    margin: 0;
    color: var(--color-primary-strong);
    font-size: 0.78rem;
    font-weight: 850;
    letter-spacing: 0.14em;
}

.local-note {
    margin: clamp(2rem, 5vw, 3.5rem) 0;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    padding: 1.35rem 1.5rem;
    border: 1px solid #f1c79c;
    border-radius: var(--radius-md);
    background: var(--color-primary-soft);
}

.local-note__icon {
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #fff;
    background: var(--color-primary-strong);
    font-size: 1.35rem;
}

.local-note h2 { margin: 0; font-size: 1.2rem; }
.local-note p { margin: 0.25rem 0 0; color: #5f5146; }

.tool-directory { scroll-margin-top: 6rem; }
.tool-groups { display: grid; gap: 2rem; }

.tool-group {
    padding: 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.tool-group h3 {
    margin: 0 0 1rem;
    color: var(--color-primary-strong);
    font-size: 1.2rem;
}

.tool-link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr));
    gap: 0.75rem;
}

.tool-link {
    min-height: 64px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-ink);
    background: var(--color-surface-alt);
    font-weight: 700;
    text-decoration: none;
    transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.tool-link:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
    transform: translateY(-2px);
}

.tool-link--current {
    border-color: var(--color-primary-strong);
    background: var(--color-primary-soft);
}

.tool-link__icon {
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    color: #fff;
    background: var(--color-ink);
}

.tool-link__icon svg {
    width: 1.25rem;
    height: 1.25rem;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.8;
}

.tool-link__icon--png-to-jpg,
.tool-link__icon--jpg-to-png,
.tool-link__icon--svg-to-png,
.tool-link__icon--svg-to-jpg,
.tool-link__icon--png-transparent,
.tool-link__icon--png-color,
.tool-link__icon--image-to-webp,
.tool-link__icon--resize,
.tool-link__icon--compress { background: #31435b; }

.tool-link__icon--convert { background: #365969; }
.tool-link__icon--gradient { background: linear-gradient(135deg, #d84a28, #7154b5); }
.tool-link__icon--contrast { background: #374151; }
.tool-link__icon--palette { background: linear-gradient(135deg, #d84a28, #2f7d68); }

.tool-directory--compact .tool-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.tool-directory--compact .tool-group { padding: 1rem; box-shadow: none; }
.tool-directory--compact .tool-link { min-height: 54px; padding: 0.65rem 0.75rem; }
.tool-directory--compact .tool-link__icon { width: 30px; height: 30px; flex-basis: 30px; }

.source-editor {
    width: 100%;
    min-height: 360px;
    display: block;
    padding: 1rem;
    resize: vertical;
    line-height: 1.55;
    tab-size: 4;
    white-space: pre;
    font-family: ui-monospace, "Cascadia Mono", Consolas, "Yu Gothic UI", monospace;
    font-size: 0.94rem;
}

.color-form,
.gradient-form,
.contrast-form {
    max-width: 720px;
    display: grid;
    gap: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 7rem auto minmax(160px, 1fr);
    align-items: center;
    gap: 0.75rem;
}

.form-row > span:first-child { font-weight: 700; }
.color-form .form-row { grid-template-columns: 7rem minmax(180px, 1fr); }

.rgb-fields,
.image-options {
    margin: 0;
    padding: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.rgb-fields legend,
.image-options legend { padding: 0 0.35rem; font-weight: 700; }

.rgb-fields label,
.image-options label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rgb-fields input { width: 7rem; }

.color-preview {
    min-height: 130px;
    margin-top: 1.5rem;
    display: grid;
    place-items: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.color-preview span,
.gradient-swatch span {
    padding: 0.2rem 0.55rem;
    border-radius: 6px;
    color: #111;
    background: rgba(255, 255, 255, 0.84);
    font-family: ui-monospace, Consolas, monospace;
    font-weight: 800;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.18);
}

.gradient-output {
    margin-top: 1.5rem;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.gradient-swatch { min-height: 48px; display: grid; place-items: center; }

.palette-output {
    margin-top: 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr));
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.palette-output .gradient-swatch { min-height: 112px; }

.contrast-preview {
    min-height: 150px;
    margin-top: 1.5rem;
    display: grid;
    place-items: center;
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: clamp(1.2rem, 4vw, 2rem);
    font-weight: 800;
    text-align: center;
}

.contrast-results {
    margin: 1rem 0 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.contrast-results > div { padding: 1rem; border-right: 1px solid var(--color-border); }
.contrast-results > div:last-child { border-right: 0; }
.contrast-results dt { color: var(--color-muted); font-size: 0.85rem; }
.contrast-results dd { margin: 0.4rem 0 0; font-weight: 800; }
.tool-note { margin: 1rem 0 0; color: var(--color-muted); }

.file-drop {
    min-height: 250px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 2rem 1rem;
    border: 2px dashed #b9c2cf;
    border-radius: var(--radius-md);
    color: var(--color-muted);
    background: var(--color-surface-alt);
    cursor: pointer;
    text-align: center;
    transition: border-color 0.18s ease, background 0.18s ease;
}

.file-drop:hover,
.file-drop--active {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

.file-drop:focus-within {
    outline: 3px solid #126bc5;
    outline-offset: 3px;
}

.file-drop__input { width: 1px; height: 1px; position: absolute; opacity: 0; }
.file-drop__icon { font-size: 3.2rem; line-height: 1; color: var(--color-primary); }
.file-drop strong { color: var(--color-ink); font-size: 1.25rem; }
.file-drop small { margin-top: 0.5rem; }
.selected-file { margin: 0.8rem 0 1.5rem; color: var(--color-muted); overflow-wrap: anywhere; }
.image-options { margin: 1.5rem 0; }
.image-options input[type="number"] { width: 9rem; }

.image-preview { margin: 2rem 0 0; }

.image-preview__canvas {
    min-height: 260px;
    display: grid;
    place-items: center;
    overflow: auto;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: #fff;
    background-image:
        linear-gradient(45deg, #e5e7eb 25%, transparent 25%),
        linear-gradient(-45deg, #e5e7eb 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e5e7eb 75%),
        linear-gradient(-45deg, transparent 75%, #e5e7eb 75%);
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
    background-size: 20px 20px;
}

.image-preview__canvas img { max-width: 100%; max-height: 620px; object-fit: contain; }
.image-preview figcaption { margin-top: 0.65rem; color: var(--color-muted); overflow-wrap: anywhere; }

@media (max-width: 800px) {
    .home-hero { grid-template-columns: 1fr; }
    .home-hero__visual { min-height: 190px; border-top: 1px solid var(--color-border); border-left: 0; }
    .tool-directory--compact .tool-groups { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .home-hero__copy { padding: 2rem 1.4rem; }
    .home-hero__copy h1 { font-size: clamp(2rem, 10vw, 2.7rem); }
    .local-note { grid-template-columns: 1fr; }
    .tool-link-grid { grid-template-columns: 1fr; }
    .form-row,
    .color-form .form-row { grid-template-columns: 1fr; align-items: start; }
    .form-row > span:first-child { margin-bottom: -0.35rem; }
    .rgb-fields,
    .image-options { align-items: stretch; flex-direction: column; }
    .rgb-fields label,
    .image-options label { justify-content: space-between; }
    .rgb-fields input,
    .image-options input[type="number"] { width: min(12rem, 62vw); }
    .image-actions .button { flex: 1 1 42%; }
    .contrast-results { grid-template-columns: 1fr; }
    .contrast-results > div { border-right: 0; border-bottom: 1px solid var(--color-border); }
    .contrast-results > div:last-child { border-bottom: 0; }
}