:root {
    color-scheme: light;
    --bg: #f4f7fb;
    --panel: #ffffff;
    --text: #172033;
    --muted: #6d7789;
    --line: #dfe5ee;
    --primary: #2764e7;
    --primary-dark: #174ab8;
    --success: #147a4b;
    --danger: #bd2c37;
    --shadow: 0 18px 45px rgba(30, 46, 80, .10);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

a { color: inherit; }

.shell {
    width: min(920px, calc(100% - 28px));
    margin: 0 auto;
    padding: 28px 0 56px;
}

.hero {
    text-align: center;
    padding: 34px 12px 24px;
}

.hero h1, .panel h1 {
    margin: 4px 0 10px;
    font-size: clamp(2rem, 6vw, 3.5rem);
    letter-spacing: -.04em;
}

.hero p, .lead, .note {
    color: var(--muted);
    line-height: 1.7;
}

.eyebrow {
    margin: 0;
    color: var(--primary);
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .18em;
}

.choice-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.choice-card {
    display: block;
    min-height: 230px;
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: 28px;
    background: var(--panel);
    box-shadow: var(--shadow);
    text-decoration: none;
    transition: transform .18s ease, box-shadow .18s ease;
}

.choice-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 22px 50px rgba(30, 46, 80, .15);
}

.choice-card h2 {
    margin: 18px 0 6px;
    font-size: 1.7rem;
}

.choice-card p { color: var(--muted); }

.choice-icon {
    display: grid;
    place-items: center;
    width: 62px;
    height: 62px;
    border-radius: 20px;
    background: #e9f0ff;
    color: var(--primary);
    font-size: 2rem;
    font-weight: 800;
}

.note {
    margin: 24px auto 0;
    text-align: center;
}

.back-link {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--muted);
    text-decoration: none;
}

.panel {
    margin-bottom: 20px;
    padding: clamp(22px, 5vw, 42px);
    border: 1px solid var(--line);
    border-radius: 28px;
    background: var(--panel);
    box-shadow: var(--shadow);
}

.file-picker {
    display: grid;
    place-items: center;
    min-height: 130px;
    margin: 24px 0;
    border: 2px dashed #afbdd3;
    border-radius: 22px;
    background: #f8faff;
    cursor: pointer;
    font-size: 1.15rem;
    font-weight: 800;
}

.file-picker input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.file-list {
    display: grid;
    gap: 12px;
    margin: 18px 0;
}

.file-list.empty {
    padding: 22px;
    border-radius: 16px;
    background: #f6f8fb;
    color: var(--muted);
    text-align: center;
}

.file-card {
    display: grid;
    grid-template-columns: 76px 1fr auto;
    gap: 14px;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 18px;
}

.thumb {
    width: 76px;
    height: 76px;
    border-radius: 13px;
    object-fit: cover;
    background: #edf1f6;
}

.file-meta {
    display: grid;
    gap: 5px;
    min-width: 0;
}

.file-meta strong {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-meta span { color: var(--muted); }

.remove-button {
    border: 0;
    background: transparent;
    color: var(--danger);
    cursor: pointer;
}

.primary-button, .secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 0 22px;
    border: 0;
    border-radius: 15px;
    font: inherit;
    font-weight: 800;
    text-decoration: none;
    cursor: pointer;
}

.primary-button {
    width: 100%;
    background: var(--primary);
    color: white;
}

.primary-button:hover { background: var(--primary-dark); }
.primary-button:disabled { opacity: .45; cursor: not-allowed; }

.secondary-button {
    background: #edf2fa;
    color: var(--text);
}

.small {
    width: auto;
    min-height: 44px;
    padding: 0 16px;
}

.status-box {
    margin: 15px 0;
    padding: 14px 16px;
    border-radius: 14px;
    background: #edf2fa;
}

.status-box.success { background: #e8f6ef; color: var(--success); }
.status-box.error { background: #fff0f1; color: var(--danger); }
.hidden { display: none !important; }

.result-panel { text-align: center; }

.receive-code {
    margin: 16px 0 8px;
    font-size: clamp(3rem, 12vw, 5.2rem);
    font-weight: 900;
    letter-spacing: .12em;
    color: var(--primary);
}

.expiry { color: var(--muted); }

.code-form {
    display: grid;
    gap: 14px;
    margin-top: 24px;
}

.code-form input {
    width: 100%;
    padding: 18px;
    border: 2px solid var(--line);
    border-radius: 17px;
    outline: 0;
    text-align: center;
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: .25em;
}

.code-form input:focus { border-color: var(--primary); }

.gallery-heading {
    display: flex;
    gap: 16px;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 18px;
}

.gallery-heading h2 { margin: 5px 0 0; }

.pill {
    padding: 8px 12px;
    border-radius: 999px;
    background: #edf2fa;
    color: var(--muted);
    font-size: .86rem;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.photo-card {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
}

.photo-card > a {
    display: block;
    aspect-ratio: 4 / 3;
    background: #edf1f6;
}

.photo-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-body {
    display: grid;
    gap: 7px;
    padding: 15px;
}

.photo-body strong {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.photo-body span { color: var(--muted); font-size: .9rem; }

.photo-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.photo-actions > * { flex: 1; }

@media (max-width: 640px) {
    .shell { width: min(100% - 18px, 920px); padding-top: 16px; }
    .choice-grid, .gallery { grid-template-columns: 1fr; }
    .choice-card { min-height: 190px; padding: 24px; }
    .panel { border-radius: 22px; }
    .file-card { grid-template-columns: 64px 1fr auto; }
    .thumb { width: 64px; height: 64px; }
    .gallery-heading { display: block; }
    .pill { display: inline-block; margin-top: 10px; }
}


/* Version 1.1 */
.file-picker { grid-template-rows: auto auto auto; gap: 5px; }
.file-picker.dragover { border-color: var(--primary); background: #eaf1ff; transform: scale(1.01); }
.picker-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: #e5edff; color: var(--primary); font-size: 1.7rem; }
.file-picker small { color: var(--muted); font-weight: 500; }
.qr-code { display: inline-grid; place-items: center; min-width: 230px; min-height: 230px; padding: 10px; margin: 12px auto; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.qr-code img, .qr-code canvas { max-width: 210px; height: auto; }
.receive-url { overflow-wrap: anywhere; color: var(--muted); font-size: .86rem; }
.result-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 18px; }
.primary-button.compact { width: auto; }
.bulk-actions { display: flex; align-items: center; gap: 14px; margin: 0 0 18px; padding: 14px; border-radius: 16px; background: #f6f8fb; }
.bulk-note { color: var(--muted); font-size: .85rem; line-height: 1.5; }
@media (max-width: 640px) {
    .result-actions { grid-template-columns: 1fr; }
    .bulk-actions { align-items: stretch; flex-direction: column; }
    .bulk-actions .primary-button { width: 100%; }
}


/* Version 1.2 */
.selection-summary { margin: 16px 0 8px; padding: 10px 14px; border-radius: 14px; background: #f4f7fb; color: var(--muted); font-weight: 700; }
.admin-shell { max-width: 620px; }
.admin-login { margin-top: 10vh; }
.admin-login-form { display: grid; gap: 16px; margin: 22px 0; }
.admin-login-form label { display: grid; gap: 8px; font-weight: 700; }
.admin-login-form input, .admin-settings select { width: 100%; padding: 14px; border: 1px solid var(--line); border-radius: 14px; background: #fff; font: inherit; }
.admin-layout { width: min(1180px, calc(100% - 28px)); margin: 0 auto; padding: 28px 0 60px; }
.admin-header, .admin-section-title, .transfer-top { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.admin-header h1, .admin-section-title h2 { margin: 4px 0 0; }
.admin-header-actions, .transfer-actions, .admin-photo-actions { display: flex; gap: 10px; align-items: center; }
.admin-header-actions a, .transfer-actions a, .admin-photo-actions a { text-decoration: none; }
.admin-message { margin: 18px 0; }
.admin-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 22px 0; }
.admin-stats > div { padding: 20px; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: 0 8px 24px #0000000a; }
.admin-stats span { display: block; color: var(--muted); font-size: .9rem; }
.admin-stats strong { display: block; margin-top: 7px; font-size: 1.45rem; }
.admin-settings { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 24px; }
.admin-settings form { display: flex; gap: 12px; align-items: end; }
.admin-settings label { display: grid; gap: 7px; min-width: 180px; font-weight: 700; }
.transfer-list { display: grid; gap: 16px; margin-top: 20px; }
.transfer-card { padding: 18px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.transfer-top > div:first-child { display: flex; align-items: center; gap: 12px; }
.transfer-code { font-size: 1.65rem; letter-spacing: .12em; }
.status-pill { padding: 7px 10px; border-radius: 999px; font-size: .78rem; font-weight: 800; }
.status-pill.active { background: #e8f8ee; color: #187442; }
.status-pill.expired { background: #f2f3f5; color: #6b7280; }
.transfer-thumbs { display: flex; gap: 8px; align-items: center; margin: 16px 0; min-height: 70px; }
.transfer-thumbs img { width: 82px; height: 66px; object-fit: cover; border-radius: 12px; border: 1px solid var(--line); background: #eef1f5; }
.transfer-thumbs span { display: grid; place-items: center; width: 82px; height: 66px; border-radius: 12px; background: #eef2f8; color: var(--muted); font-weight: 800; }
.transfer-meta { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin: 0; }
.transfer-meta div { padding: 10px; border-radius: 12px; background: #f7f9fc; }
.transfer-meta dt { color: var(--muted); font-size: .78rem; }
.transfer-meta dd { margin: 5px 0 0; font-size: .9rem; font-weight: 700; }
.danger-button { padding: 11px 15px; border: 0; border-radius: 12px; background: #fff0f0; color: #b42318; font: inherit; font-weight: 800; cursor: pointer; }
.admin-photo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 20px; }
.admin-photo-card { display: grid; gap: 9px; padding: 12px; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.admin-photo-card > a { display: block; aspect-ratio: 4 / 3; border-radius: 12px; overflow: hidden; background: #eef1f5; }
.admin-photo-card img { width: 100%; height: 100%; object-fit: cover; }
.admin-photo-card strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.admin-photo-card span { color: var(--muted); font-size: .85rem; }
.admin-photo-actions > * { flex: 1; }
.admin-photo-actions form { display: flex; }
.admin-photo-actions form button { width: 100%; }
.empty-admin { padding: 30px; text-align: center; color: var(--muted); }
@media (max-width: 820px) {
    .admin-stats { grid-template-columns: repeat(2, 1fr); }
    .admin-settings { grid-template-columns: 1fr; }
    .admin-settings form { align-items: stretch; flex-direction: column; }
    .admin-photo-grid { grid-template-columns: repeat(2, 1fr); }
    .transfer-meta { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
    .admin-layout { width: min(100% - 16px, 1180px); padding-top: 14px; }
    .admin-header, .admin-section-title, .transfer-top { align-items: stretch; flex-direction: column; }
    .admin-header-actions, .transfer-actions { width: 100%; }
    .admin-header-actions > *, .transfer-actions > * { flex: 1; text-align: center; }
    .admin-stats { grid-template-columns: 1fr 1fr; gap: 8px; }
    .admin-stats > div { padding: 14px; }
    .admin-photo-grid { grid-template-columns: 1fr 1fr; gap: 9px; }
    .transfer-thumbs img, .transfer-thumbs span { width: 60px; height: 52px; }
    .transfer-meta { grid-template-columns: 1fr; }
}


.admin-two-column { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 18px 0; }
.admin-account, .admin-system { margin: 0; }
.admin-password-form { display: grid; gap: 12px; margin-top: 18px; }
.admin-password-form label { display: grid; gap: 7px; font-weight: 700; }
.admin-password-form input { width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 14px; background: #fff; font: inherit; }
.system-info-list { display: grid; gap: 0; margin: 18px 0 0; }
.system-info-list > div { display: grid; grid-template-columns: minmax(150px, .9fr) 1.4fr; gap: 16px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.system-info-list > div:last-child { border-bottom: 0; }
.system-info-list dt { color: var(--muted); }
.system-info-list dd { margin: 0; font-weight: 700; overflow-wrap: anywhere; }

@media (max-width: 820px) {
    .admin-two-column { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
    .system-info-list > div { grid-template-columns: 1fr; gap: 3px; }
}

/* v1.4 performance UI */
.admin-list-count{margin:.35rem 0 0;color:var(--muted,#687083);font-size:.9rem}
.admin-pagination{display:flex;justify-content:center;align-items:center;gap:16px;margin-top:24px;flex-wrap:wrap}
.admin-pagination a{display:inline-flex;align-items:center;justify-content:center;min-width:92px;padding:10px 16px;border:1px solid #d8ddea;border-radius:12px;background:#fff;color:inherit;text-decoration:none;font-weight:700}
.admin-pagination span{font-weight:700;color:#687083}
.transfer-thumbs img,.admin-photo-card img{content-visibility:auto}

/* Version 1.5 send / receive polish */
.selection-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 40px;
    padding: 9px 13px;
    border-radius: 12px;
    background: #f6f8fb;
    color: var(--muted);
    font-weight: 700;
}
.file-picker.is-busy {
    opacity: .62;
    cursor: wait;
    pointer-events: none;
}
.progress-panel {
    margin: 16px 0;
    padding: 16px;
    border: 1px solid #cdd9ee;
    border-radius: 16px;
    background: #f7faff;
}
.progress-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}
.progress-heading span {
    color: var(--primary);
    font-weight: 900;
}
.progress-track {
    overflow: hidden;
    height: 12px;
    border-radius: 999px;
    background: #e0e8f5;
}
.progress-bar {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: var(--primary);
    transition: width .18s ease;
}
.progress-detail {
    margin-top: 9px;
    color: var(--muted);
    font-size: .9rem;
    overflow-wrap: anywhere;
}
.text-button {
    margin-top: 16px;
    padding: 8px 12px;
    border: 0;
    background: transparent;
    color: var(--primary);
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}
.status-box.info { background: #edf2fa; color: #304665; }
.status-box { overflow-wrap: anywhere; }
.skeleton-card { pointer-events: none; }
.skeleton-image,
.skeleton-line {
    position: relative;
    overflow: hidden;
    background: #e8edf4;
}
.skeleton-image { aspect-ratio: 4 / 3; }
.skeleton-line { height: 13px; border-radius: 7px; }
.skeleton-line.wide { width: 88%; height: 16px; }
.skeleton-line.button { width: 100%; height: 43px; margin-top: 7px; border-radius: 13px; }
.skeleton-image::after,
.skeleton-line::after {
    content: "";
    position: absolute;
    inset: 0;
    transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.75), transparent);
    animation: skeleton-shimmer 1.25s infinite;
}
@keyframes skeleton-shimmer { to { transform: translateX(100%); } }
.photo-card img { display: block; }
.photo-card > a { overflow: hidden; }
.photo-card > a:focus-visible,
.primary-button:focus-visible,
.secondary-button:focus-visible,
.text-button:focus-visible,
.remove-button:focus-visible,
.file-picker:focus-visible {
    outline: 3px solid rgba(39, 100, 231, .28);
    outline-offset: 3px;
}
@media (max-width: 640px) {
    .file-picker { min-height: 118px; margin: 18px 0; }
    .selection-summary { font-size: .92rem; }
    .file-card { gap: 10px; padding: 10px; }
    .remove-button { padding: 12px 4px; }
    .photo-actions { flex-direction: column; }
    .photo-actions > * { width: 100%; }
    .receive-code { letter-spacing: .08em; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}


/* Share Box v2.0 */
.jitbox-header{max-width:1120px;margin:0 auto;padding:18px 24px;display:flex;justify-content:space-between;align-items:center;font-weight:800}.jitbox-header a{text-decoration:none;color:inherit}.jitbox-header span{color:var(--muted)}
.info-section{margin-top:24px;padding:28px;border:1px solid var(--line);border-radius:24px;background:#fff}.info-section h2{margin-top:0}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px}.feature-grid article{padding:18px;border-radius:16px;background:#f7f9fc}.feature-grid p{margin-bottom:0;color:var(--muted)}.steps{padding-left:1.4rem;line-height:2}.site-footer{max-width:1120px;margin:30px auto;padding:20px 24px 40px;display:flex;justify-content:space-between;color:var(--muted)}.site-footer a{color:inherit}.mobile-guide{max-width:720px;text-align:center}.mobile-box-icon{font-size:4rem;margin-bottom:8px}.store-actions{display:grid;gap:12px;max-width:360px;margin:26px auto}.store-actions a{text-decoration:none}.store-disabled{padding:14px 18px;border-radius:14px;background:#eef1f5;color:var(--muted);font-weight:800}
@media(max-width:720px){.feature-grid{grid-template-columns:1fr}.jitbox-header{padding:14px 18px}.site-footer{flex-direction:column;gap:8px}}


/* Share Box v2.0.1 privacy options */
.privacy-options{margin:22px 0;padding:20px;border:1px solid var(--line);border-radius:18px;background:#f8faff}
.privacy-options legend{padding:0 8px;font-weight:900}
.privacy-options label{display:flex;gap:12px;align-items:flex-start;padding:11px 4px;cursor:pointer}
.privacy-options input{width:20px;height:20px;margin-top:2px;accent-color:var(--primary)}
.privacy-options label span{display:grid;gap:3px}
.privacy-options small,.privacy-options p{color:var(--muted);line-height:1.55}
.privacy-options p{margin:10px 4px 0;font-size:.88rem}


/* Share Box 2.0.3: 端末別公開設定 */
.access-mode-form { display: grid; gap: 18px; min-width: min(100%, 620px); }
.access-mode-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.access-mode-grid label, .maintenance-message-label { display: grid; gap: 7px; font-weight: 700; }
.access-mode-grid select, .maintenance-message-label textarea {
    width: 100%; padding: 12px 13px; border: 1px solid var(--line); border-radius: 13px;
    background: #fff; color: var(--text); font: inherit;
}
.maintenance-message-label textarea { resize: vertical; min-height: 92px; line-height: 1.55; }
@media (max-width: 760px) { .access-mode-grid { grid-template-columns: 1fr; } }


/* Share Box 2.0.3: スマートフォンのトップ画面省スペース化 */
.choice-main {
    display: flex;
    align-items: center;
    gap: 14px;
}
.choice-main h2 { margin: 0; }

@media (max-width: 640px) {
    .jitbox-header {
        padding: 9px 14px;
        font-size: .92rem;
    }
    .shell {
        width: min(100% - 14px, 920px);
        padding-top: 4px;
    }
    .hero {
        padding: 8px 6px 10px;
    }
    .hero .eyebrow {
        font-size: .68rem;
        letter-spacing: .12em;
    }
    .hero h1 {
        margin: 1px 0 3px;
        font-size: 1.85rem;
    }
    .hero > p:last-child {
        margin: 0 auto;
        max-width: 34rem;
        font-size: .82rem;
        line-height: 1.35;
    }
    .choice-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 9px;
    }
    .choice-card {
        min-height: 0;
        padding: 13px 10px 11px;
        border-radius: 18px;
    }
    .choice-main {
        justify-content: center;
        gap: 7px;
    }
    .choice-icon {
        width: 34px;
        height: 34px;
        border-radius: 11px;
        font-size: 1.25rem;
    }
    .choice-card h2 {
        margin: 0;
        font-size: 1.05rem;
        white-space: nowrap;
    }
    .choice-card p {
        margin: 8px 0 0;
        font-size: .72rem;
        line-height: 1.3;
        text-align: center;
    }
    .note {
        margin: 10px auto 0;
        font-size: .72rem;
        line-height: 1.35;
    }
    .info-section:first-of-type { margin-top: 16px; }
}

@media (max-width: 360px) {
    .choice-card { padding-inline: 7px; }
    .choice-main { gap: 5px; }
    .choice-icon { width: 30px; height: 30px; font-size: 1.1rem; }
    .choice-card h2 { font-size: .96rem; }
    .choice-card p { font-size: .66rem; }
}

/* v2.1 file type cards */
.file-type-icon,.receive-file-icon{display:flex;align-items:center;justify-content:center;background:#f4f7fb;font-size:44px;min-height:110px;border-radius:12px}.receive-file-icon{width:100%;aspect-ratio:4/3;font-size:64px}.photo-card>a{display:block;text-decoration:none}


/* =========================================================
   Share Box v2.2.0 visual refresh
   Functionality unchanged.
   ========================================================= */
:root {
    --bg: #eef3fb;
    --panel: rgba(255,255,255,.96);
    --text: #17233b;
    --muted: #68758c;
    --line: #d9e2f0;
    --primary: #315fd6;
    --primary-dark: #2348ad;
    --accent: #6b8ff0;
    --soft-blue: #eaf1ff;
    --soft-cyan: #eaf9fb;
    --shadow: 0 18px 50px rgba(32, 57, 104, .12);
    --shadow-strong: 0 26px 70px rgba(32, 57, 104, .18);
}

body {
    min-height: 100vh;
    background:
        radial-gradient(circle at 12% 0%, rgba(89,132,235,.18), transparent 30rem),
        radial-gradient(circle at 92% 12%, rgba(70,190,205,.12), transparent 26rem),
        linear-gradient(180deg, #f8fbff 0%, #eef3fb 44%, #f5f8fc 100%);
}

.jitbox-header {
    width: min(1120px, calc(100% - 28px));
    margin: 12px auto 0;
    padding: 12px 18px;
    border: 1px solid rgba(210,222,240,.9);
    border-radius: 18px;
    background: rgba(255,255,255,.82);
    box-shadow: 0 8px 28px rgba(32,57,104,.08);
    backdrop-filter: blur(14px);
}
.jitbox-header a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #22365e;
}
.jitbox-header span {
    padding: 6px 11px;
    border-radius: 999px;
    background: var(--soft-blue);
    color: var(--primary);
    font-size: .86rem;
}

.shell { padding-top: 16px; }

.hero {
    position: relative;
    overflow: hidden;
    margin-bottom: 20px;
    padding: 28px 26px 26px;
    border: 1px solid rgba(205,218,239,.95);
    border-radius: 30px;
    background:
        linear-gradient(135deg, rgba(255,255,255,.98), rgba(242,247,255,.95));
    box-shadow: var(--shadow);
}
.hero::before,
.hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}
.hero::before {
    width: 210px;
    height: 210px;
    right: -78px;
    top: -110px;
    background: rgba(80,125,235,.10);
}
.hero::after {
    width: 150px;
    height: 150px;
    left: -70px;
    bottom: -105px;
    background: rgba(60,190,205,.10);
}
.hero h1 {
    position: relative;
    margin: 3px 0 7px;
    color: #18366f;
    text-shadow: 0 1px 0 #fff;
}
.hero .eyebrow {
    position: relative;
    display: inline-block;
    padding: 5px 10px;
    border: 1px solid #d8e5ff;
    border-radius: 999px;
    background: #edf4ff;
}
.hero > p:last-child { position: relative; margin-bottom: 0; }

.choice-grid { gap: 16px; }
.choice-card {
    position: relative;
    overflow: hidden;
    min-height: 205px;
    border: 1px solid rgba(204,218,239,.95);
    box-shadow: 0 14px 38px rgba(32,57,104,.10);
}
.choice-card::after {
    content: "›";
    position: absolute;
    right: 24px;
    bottom: 20px;
    color: rgba(49,95,214,.22);
    font-size: 3.2rem;
    font-weight: 300;
    line-height: 1;
}
.choice-card.send {
    background: linear-gradient(145deg, #ffffff 15%, #eef4ff 100%);
}
.choice-card.receive {
    background: linear-gradient(145deg, #ffffff 15%, #eefafb 100%);
}
.choice-card:hover {
    border-color: #b9ccef;
    box-shadow: var(--shadow-strong);
}
.choice-card.receive .choice-icon {
    background: #e6f7f8;
    color: #167985;
}
.choice-icon {
    box-shadow: inset 0 0 0 1px rgba(49,95,214,.08);
}

.note {
    width: fit-content;
    max-width: 100%;
    padding: 9px 15px;
    border: 1px solid #dfe7f3;
    border-radius: 999px;
    background: rgba(255,255,255,.7);
}

.info-section {
    border-color: rgba(207,219,237,.95);
    background: rgba(255,255,255,.9);
    box-shadow: 0 12px 34px rgba(32,57,104,.07);
}
.info-section h2 { color: #243a64; }
.feature-grid article {
    border: 1px solid #e3eaf5;
    background: linear-gradient(180deg, #fbfdff, #f4f7fb);
}

.back-link {
    padding: 7px 11px;
    border-radius: 10px;
}
.back-link:hover { background: rgba(255,255,255,.8); color: var(--primary); }

.panel {
    position: relative;
    overflow: hidden;
    border-color: rgba(204,218,239,.98);
    background: rgba(255,255,255,.96);
    box-shadow: var(--shadow);
}
.panel::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--primary), #7298ef 58%, #52b8c3);
}
.panel h1, .panel h2 { color: #223a68; }

.file-picker {
    border-color: #aebfdd;
    background:
        linear-gradient(180deg, rgba(248,251,255,.98), rgba(239,245,255,.98));
    box-shadow: inset 0 0 0 1px rgba(255,255,255,.7);
}
.file-picker:hover {
    border-color: var(--primary);
    background: #f0f5ff;
}
.picker-icon {
    width: 50px;
    height: 50px;
    box-shadow: 0 8px 20px rgba(49,95,214,.12);
}

.privacy-options {
    border-color: #d7e2f2;
    background: linear-gradient(180deg, #f9fbff, #f3f7fd);
}
.privacy-options legend {
    color: #294a89;
}

.primary-button {
    background: linear-gradient(135deg, #315fd6, #4777e8);
    box-shadow: 0 9px 20px rgba(49,95,214,.20);
}
.primary-button:hover {
    background: linear-gradient(135deg, #2348ad, #315fd6);
}
.secondary-button {
    border: 1px solid #d9e3f2;
    background: linear-gradient(180deg, #f8faff, #edf2fa);
}

.code-form input {
    border-color: #c9d7eb;
    background: #fbfdff;
    box-shadow: inset 0 2px 6px rgba(31,55,96,.04);
}
.code-form input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(49,95,214,.10);
}

.gallery-heading {
    padding-bottom: 14px;
    border-bottom: 1px solid #e4eaf3;
}
.photo-card {
    border-color: #dbe4f0;
    box-shadow: 0 10px 28px rgba(32,57,104,.08);
}
.bulk-actions {
    border: 1px solid #e0e7f2;
    background: linear-gradient(180deg, #fafcff, #f4f7fb);
}

.site-footer {
    border-top: 1px solid rgba(205,217,235,.8);
}

@media (max-width: 640px) {
    .jitbox-header {
        width: calc(100% - 14px);
        margin-top: 7px;
        padding: 8px 11px;
        border-radius: 14px;
    }
    .shell { padding-top: 7px; }
    .hero {
        margin-bottom: 10px;
        padding: 13px 10px 12px;
        border-radius: 20px;
    }
    .hero .eyebrow {
        padding: 3px 7px;
    }
    .hero h1 {
        margin: 1px 0 3px;
        font-size: 1.85rem;
    }
    .choice-grid { gap: 8px; }
    .choice-card {
        min-height: 0;
        padding: 12px 9px 10px;
        border-radius: 17px;
        box-shadow: 0 8px 20px rgba(32,57,104,.09);
    }
    .choice-card::after { display: none; }
    .choice-card p { margin-top: 6px; }
    .note {
        margin-top: 8px;
        padding: 6px 10px;
        border-radius: 12px;
    }
    .panel {
        padding: 20px 16px;
        border-radius: 20px;
    }
    .panel::before { height: 4px; }
}


/* Share Box v2.2.1 — sky landing page */
.home-shell { width: 100%; margin: 0; }
.sky-hero {
    position: relative;
    min-height: 650px;
    overflow: hidden;
    padding: 38px max(20px, calc((100vw - 1040px)/2)) 44px;
    background: url("sharebox-sky.svg") center/cover no-repeat;
    border-bottom: 1px solid rgba(159,211,242,.8);
}
.sky-hero::after {
    content:""; position:absolute; inset:auto 0 0; height:150px;
    background:linear-gradient(180deg,rgba(255,255,255,0),rgba(255,255,255,.96));
    pointer-events:none;
}
.sky-copy { position:relative; z-index:3; text-align:center; color:#15345d; }
.sky-kicker { margin:0 0 4px; font-weight:800; color:#1268bc; letter-spacing:.08em; }
.cloud-mark { font-size:4.4rem; line-height:.9; color:white; filter:drop-shadow(0 8px 10px rgba(0,103,190,.18)); }
.sky-copy h1 { margin:0; font-size:clamp(3rem,7vw,5.4rem); line-height:1; letter-spacing:-.055em; color:#0b65c8; text-shadow:0 2px 0 rgba(255,255,255,.7); }
.sky-copy h1 strong { color:#132e55; }
.sky-lead { margin:12px 0 4px; font-size:clamp(1.15rem,2.2vw,1.65rem); font-weight:900; }
.sky-sub { margin:0; font-weight:650; line-height:1.7; }

.home-actions {
    position:relative; z-index:4; display:grid; grid-template-columns:1fr 1fr;
    gap:20px; width:min(940px,100%); margin:30px auto 0;
}
.home-action {
    display:grid; grid-template-columns:82px 1fr 32px; align-items:center; gap:18px;
    min-height:170px; padding:24px 24px; border:1px solid rgba(255,255,255,.9);
    border-radius:28px; background:rgba(255,255,255,.90); backdrop-filter:blur(10px);
    box-shadow:0 20px 50px rgba(22,82,136,.18); text-decoration:none;
    transition:.2s ease;
}
.home-action:hover { transform:translateY(-4px); box-shadow:0 25px 60px rgba(22,82,136,.24); }
.home-action-icon {
    display:grid; place-items:center; width:82px; height:82px; border-radius:50%;
    color:white; font-size:2.5rem; font-weight:900; box-shadow:0 10px 24px rgba(0,93,195,.24);
}
.send-action .home-action-icon { background:linear-gradient(145deg,#45c8ff,#0879df); }
.receive-action .home-action-icon { background:linear-gradient(145deg,#72df45,#10a94c); }
.home-action-text { display:flex; flex-direction:column; min-width:0; }
.home-action-text small { width:max-content; padding:3px 10px; border-radius:999px; background:#eaf4ff; color:#1268bc; font-weight:800; }
.receive-action .home-action-text small { background:#e9f9ee; color:#168744; }
.home-action-text strong { margin-top:7px; font-size:1.55rem; color:#172f54; }
.home-action-text em { margin-top:7px; color:#64748b; font-size:.9rem; font-style:normal; line-height:1.45; }
.home-action-arrow { font-size:1.8rem; color:#6d89ad; }

.floating-file {
    position:absolute; z-index:2; display:grid; place-items:center; width:78px; height:92px;
    border:4px solid rgba(255,255,255,.78); border-radius:14px; color:white; font-weight:900;
    box-shadow:0 15px 35px rgba(17,91,151,.20); transform:rotate(var(--r));
}
.floating-file small { display:block; font-size:.55rem; opacity:.9; }
.file-photo { left:7%; top:110px; --r:-9deg; background:linear-gradient(145deg,#ffbf3e,#ff8b2d); }
.file-video { left:20%; top:75px; --r:9deg; background:linear-gradient(145deg,#6cb7ff,#426be8); }
.file-pdf { left:14%; top:260px; --r:-7deg; background:linear-gradient(145deg,#ff6a65,#e62f42); }
.file-zip { right:13%; top:260px; --r:8deg; background:linear-gradient(145deg,#7d91a8,#44566d); }
.file-doc { right:7%; top:110px; --r:10deg; background:linear-gradient(145deg,#42d37c,#14a95a); }

.home-content { position:relative; z-index:5; width:min(1120px,calc(100% - 28px)); margin:-55px auto 0; padding-bottom:54px; }
.home-features {
    display:grid; grid-template-columns:repeat(5,1fr); gap:10px; padding:22px 18px;
    border:1px solid #dce8f5; border-radius:24px; background:rgba(255,255,255,.97);
    box-shadow:0 16px 45px rgba(32,80,125,.10);
}
.home-features article { text-align:center; padding:8px; }
.home-features article>span { display:grid; place-items:center; width:48px; height:48px; margin:0 auto 8px; border-radius:16px; background:#edf6ff; color:#1782dd; font-size:1.5rem; }
.home-features strong { display:block; color:#17335a; }
.home-features p { margin:5px 0 0; color:#718096; font-size:.82rem; line-height:1.45; }
.home-code-note { margin:14px auto 0; text-align:center; color:#6a778a; font-size:.86rem; }
.home-info {
    display:flex; align-items:center; justify-content:space-between; gap:24px; margin-top:22px;
    padding:24px 28px; border:1px solid #d9e8f7; border-radius:22px;
    background:linear-gradient(135deg,#f5fbff,#edf7ff);
}
.home-info-label { margin:0; color:#1782dd; font-size:.8rem; font-weight:900; letter-spacing:.12em; }
.home-info h2 { margin:4px 0 6px; color:#17335a; }
.home-info p:not(.home-info-label) { margin:0; color:#66768c; line-height:1.65; }
.home-info a { flex:0 0 auto; padding:12px 18px; border:1px solid #bcd7f3; border-radius:12px; background:white; color:#1268bc; font-weight:800; text-decoration:none; }
.mobile-only { display:none; }

@media(max-width:760px){
    .jitbox-header { position:relative; z-index:10; }
    .sky-hero { min-height:480px; padding:18px 10px 62px; }
    .cloud-mark { font-size:3rem; }
    .sky-copy h1 { font-size:2.8rem; }
    .sky-lead { margin-top:7px; font-size:1.05rem; }
    .sky-sub { font-size:.8rem; }
    .home-actions { gap:8px; margin-top:18px; }
    .home-action { grid-template-columns:48px 1fr; gap:8px; min-height:112px; padding:11px 9px; border-radius:18px; }
    .home-action-icon { width:48px; height:48px; font-size:1.6rem; }
    .home-action-text small { padding:2px 7px; font-size:.68rem; }
    .home-action-text strong { margin-top:4px; font-size:1rem; }
    .home-action-text em { display:none; }
    .home-action-arrow { display:none; }
    .floating-file { width:45px; height:54px; border-width:2px; border-radius:8px; font-size:.7rem; opacity:.85; }
    .file-photo { left:3%; top:112px; } .file-video { left:13%; top:56px; }
    .file-pdf { left:6%; top:225px; } .file-zip { right:5%; top:225px; } .file-doc { right:5%; top:82px; }
    .home-content { margin:-45px auto 0; }
    .home-features { grid-template-columns:repeat(2,1fr); gap:5px; padding:10px; border-radius:18px; }
    .home-features article:last-child { grid-column:1/-1; }
    .home-features article>span { width:38px; height:38px; margin-bottom:5px; font-size:1.1rem; }
    .home-features strong { font-size:.82rem; }
    .home-features p { font-size:.7rem; }
    .home-info { padding:18px; flex-direction:column; align-items:flex-start; }
    .mobile-only { display:block; }
}

.upload-diagnostic { margin-bottom: 20px; }
.upload-diagnostic-list { margin-top: 18px; }
.upload-diagnostic-list small { color: var(--muted); font-weight: 500; }
.diag-ok { color: #16834b; }
.diag-ng { color: #b42318; }
.upload-warning { margin-top: 16px; }
.diagnostic-note { margin: 14px 0 0; color: var(--muted); line-height: 1.7; }
.diagnostic-note code, .upload-warning code { padding: 2px 6px; border-radius: 6px; background: #eef3f9; color: #28476f; }