@font-face {
    font-family: "Anton";
    src: url("../fonts/Anton-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Montserrat";
    src: url("../fonts/Montserrat-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Montserrat";
    src: url("../fonts/Montserrat-Bold.ttf") format("truetype");
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

:root {
    --ink: #202027;
    --muted: #6d6d79;
    --line: #dedee7;
    --line-strong: #c8c8d4;
    --surface: #ffffff;
    --canvas: #f7f7fa;
    --magenta: #ff026a;
    --purple: #a8269c;
    --blue: #0000ff;
    --danger: #ba174e;
    --success: #08785f;
    --warning-bg: #fff7d7;
    --radius: 14px;
    --font-ui: "Montserrat", Arial, sans-serif;
    --font-display: "Anton", Impact, sans-serif;
}

* { box-sizing: border-box; }

html { color-scheme: light; }

body {
    margin: 0;
    min-width: 320px;
    background: var(--canvas);
    color: var(--ink);
    font-family: var(--font-ui);
    font-size: 1rem;
    line-height: 1.5;
}

button, input, select { font: inherit; }
button { cursor: pointer; }
button:disabled, input:disabled, select:disabled { cursor: not-allowed; opacity: .55; }

:focus-visible {
    outline: 3px solid rgba(0, 0, 255, .22);
    outline-offset: 3px;
}

.is-hidden { display: none !important; }

.app-header {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
}

.header-inner {
    width: min(1440px, calc(100% - 64px));
    min-height: 84px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand-logo {
    display: block;
    width: 215px;
    height: auto;
}

.product-id { display: grid; justify-items: end; line-height: 1.2; }
.product-name { font-weight: 600; letter-spacing: -.02em; }
.product-signature { margin-top: 4px; color: var(--muted); font-size: .75rem; }

.app-shell {
    width: min(1440px, calc(100% - 64px));
    margin: 0 auto;
    padding: 48px 0 72px;
}

.intro { max-width: 820px; margin-bottom: 28px; }
.eyebrow {
    margin: 0 0 8px;
    color: var(--magenta);
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .13em;
    text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }
h1 {
    margin-bottom: 8px;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4.75rem);
    font-weight: 400;
    line-height: 1.02;
    letter-spacing: .005em;
    text-transform: uppercase;
}
.intro > p:not(.eyebrow) { margin-bottom: 8px; color: var(--muted); font-size: 1.05rem; }
.format-line { color: var(--purple); font-size: .78rem; font-weight: 600; letter-spacing: .12em; }

.alert {
    margin-bottom: 20px;
    padding: 14px 16px;
    border: 1px solid #e9cc62;
    border-radius: 10px;
    background: var(--warning-bg);
    font-size: .9rem;
}

.dropzone {
    min-height: 210px;
    padding: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 22px;
    text-align: left;
    background: var(--surface);
    border: 1.5px dashed var(--line-strong);
    border-radius: var(--radius);
    transition: border-color .18s ease, background .18s ease, transform .18s ease;
}
.dropzone:hover, .dropzone.is-dragging {
    border-color: var(--magenta);
    background: #fff9fc;
}
.dropzone.is-dragging { transform: translateY(-2px); }
.upload-mark {
    width: 60px;
    height: 60px;
    flex: 0 0 60px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: var(--magenta);
    background: #fff0f6;
}
.dropzone h2 { margin-bottom: 2px; font-size: 1.15rem; }
.dropzone p { margin-bottom: 4px; color: var(--muted); }
.text-link { color: var(--blue); font-weight: 600; }
.upload-help { font-size: .78rem; }

.workspace {
    margin-top: 24px;
    display: grid;
    grid-template-columns: minmax(300px, 370px) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}

.settings-panel, .files-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}
.settings-panel { padding: 24px; }
.files-panel { min-width: 0; padding: 24px; }

.section-heading { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 24px; }
.section-heading.compact { margin-bottom: 0; }
.section-heading h2 { margin-bottom: 2px; font-size: 1.05rem; }
.section-heading p { margin-bottom: 0; color: var(--muted); font-size: .8rem; }
.step-number {
    color: var(--magenta);
    font-family: var(--font-display);
    font-size: 1.55rem;
    line-height: 1;
}

.field-group { display: grid; gap: 7px; margin-bottom: 18px; }
.field-group > label, .bulk-rename > label, legend { font-size: .8rem; font-weight: 600; }
select, input[type="text"], input[type="number"] {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    color: var(--ink);
    background: #fff;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
}
select:focus, input:focus { border-color: var(--blue); }
.dimensions-grid { display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 10px; }
.dimensions-grid .field-group { margin-bottom: 0; }
.dimension-separator { padding-bottom: 11px; color: var(--muted); }
.input-suffix { position: relative; }
.input-suffix input { padding-right: 40px; }
.input-suffix span { position: absolute; right: 11px; top: 12px; color: var(--muted); font-size: .78rem; }

.check-list { margin: 22px 0 8px; display: grid; gap: 12px; }
.check-row { display: flex; align-items: flex-start; gap: 9px; font-size: .86rem; }
input[type="checkbox"], input[type="radio"] { accent-color: var(--magenta); }
.field-note { margin: 0 0 24px; color: var(--muted); font-size: .75rem; }
.field-note.is-warning { color: var(--danger); }

.quality-fieldset { margin: 0; padding: 0; border: 0; }
.quality-fieldset legend { margin-bottom: 9px; }
.quality-option {
    min-height: 54px;
    margin-top: -1px;
    padding: 10px 12px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--line);
}
.quality-option:first-of-type { border-radius: 8px 8px 0 0; }
.quality-option:last-of-type { border-radius: 0 0 8px 8px; }
.quality-option:has(input:checked) { position: relative; border-color: var(--magenta); background: #fff8fb; }
.quality-option span { display: grid; }
.quality-option strong { font-size: .8rem; }
.quality-option small { color: var(--muted); font-size: .7rem; }
.quality-option b { color: var(--purple); font-size: .78rem; }
.range-wrap { padding: 14px 4px 0; }
.range-wrap input { width: 100%; accent-color: var(--magenta); }
.range-labels { display: flex; justify-content: space-between; color: var(--muted); font-size: .65rem; }

.bulk-rename { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--line); }
.bulk-row { margin: 8px 0 10px; display: grid; grid-template-columns: 1fr 72px; gap: 8px; }

.files-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-bottom: 20px; }
.file-list { display: grid; gap: 10px; }
.file-card {
    padding: 12px;
    display: grid;
    grid-template-columns: 68px minmax(150px, 1.25fr) minmax(150px, .9fr) minmax(110px, .7fr) auto;
    gap: 14px;
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 10px;
}
.file-card.is-error { border-color: #e9a7ba; background: #fff9fb; }
.file-card.is-success { border-color: #aadacc; }
.file-thumb {
    width: 68px;
    height: 52px;
    display: block;
    object-fit: cover;
    border-radius: 7px;
    background: #ededf2;
}
.file-main, .file-result { min-width: 0; }
.file-original-name { margin: 0 0 3px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .78rem; font-weight: 600; }
.file-meta { margin: 0; color: var(--muted); font-size: .7rem; }
.file-name-field { display: grid; gap: 4px; }
.file-name-field label { color: var(--muted); font-size: .65rem; }
.file-name-field input { min-height: 38px; padding: 8px 10px; font-size: .76rem; }
.result-metric { margin: 0; font-size: .76rem; font-weight: 600; }
.result-metric.success { color: var(--success); }
.result-metric.warning { color: var(--danger); }
.file-status { color: var(--muted); font-size: .7rem; }
.file-actions { display: flex; align-items: center; gap: 7px; }
.icon-button {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    color: var(--muted);
    background: transparent;
    border: 1px solid var(--line);
    border-radius: 8px;
}
.icon-button:hover { color: var(--magenta); border-color: var(--magenta); }

.button {
    min-height: 44px;
    padding: 10px 16px;
    border-radius: 8px;
    border: 1px solid transparent;
    font-weight: 600;
    font-size: .82rem;
}
.button-primary { color: #fff; background: var(--blue); border-color: var(--blue); }
.button-primary:hover { background: #1717d6; border-color: #1717d6; }
.button-secondary { color: var(--magenta); background: #fff; border-color: var(--magenta); }
.button-secondary:hover { background: #fff5f9; }
.button-ghost { color: var(--ink); background: transparent; border-color: var(--line); }
.button-ghost:hover { border-color: var(--ink); }
.button-small { min-height: 36px; padding: 7px 11px; font-size: .74rem; }

.progress-panel { margin-top: 20px; padding: 16px; background: #f6f6ff; border-radius: 10px; }
.progress-copy { margin-bottom: 9px; display: flex; justify-content: space-between; gap: 20px; font-size: .78rem; }
.progress-track { height: 6px; overflow: hidden; background: #dddded; border-radius: 20px; }
.progress-track span { display: block; width: 0; height: 100%; background: linear-gradient(90deg, var(--magenta), var(--purple), var(--blue)); transition: width .2s ease; }

.batch-summary { margin-top: 20px; padding: 22px; background: #f7f7ff; border: 1px solid #dadaff; border-radius: 10px; }
.batch-summary h3 { margin-bottom: 18px; font-size: 1.1rem; }
.summary-stats { margin: 0 0 20px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.summary-stats div { padding-right: 10px; border-right: 1px solid #dadae7; }
.summary-stats div:last-child { border-right: 0; }
.summary-stats dt { color: var(--muted); font-size: .68rem; }
.summary-stats dd { margin: 2px 0 0; font-size: .9rem; font-weight: 600; }

.action-bar { margin-top: 22px; padding-top: 18px; display: flex; justify-content: flex-end; gap: 10px; border-top: 1px solid var(--line); }

.toast-region { position: fixed; z-index: 20; right: 20px; bottom: 20px; display: grid; gap: 8px; }
.toast { max-width: 360px; padding: 13px 15px; color: #fff; background: var(--ink); border-radius: 8px; font-size: .78rem; }
.toast.error { background: var(--danger); }
.noscript { margin: 20px; padding: 16px; background: var(--warning-bg); }

@media (max-width: 980px) {
    .workspace { grid-template-columns: 1fr; }
    .file-card { grid-template-columns: 62px minmax(140px, 1fr) minmax(150px, 1fr) auto; }
    .file-result { grid-column: 2 / 4; }
}

@media (max-width: 680px) {
    .header-inner, .app-shell { width: min(100% - 32px, 1440px); }
    .header-inner { min-height: 72px; }
    .brand-logo { width: 165px; }
    .product-id { display: none; }
    .app-shell { padding: 34px 0 100px; }
    h1 { font-size: clamp(2.35rem, 12vw, 3.4rem); }
    .intro > p:not(.eyebrow) { font-size: .95rem; }
    .dropzone { min-height: 190px; padding: 28px 20px; flex-direction: column; text-align: center; }
    .settings-panel, .files-panel { padding: 18px; }
    .files-toolbar { align-items: flex-start; }
    .file-card { grid-template-columns: 58px minmax(0, 1fr) auto; gap: 10px; }
    .file-thumb { width: 58px; height: 50px; }
    .file-name-field, .file-result { grid-column: 1 / -1; }
    .file-actions { grid-column: 3; grid-row: 1; }
    .summary-stats { grid-template-columns: 1fr; }
    .summary-stats div { padding: 8px 0; border-right: 0; border-bottom: 1px solid #dadae7; }
    .summary-stats div:last-child { border-bottom: 0; }
    .action-bar {
        position: fixed;
        z-index: 10;
        right: 0;
        bottom: 0;
        left: 0;
        margin: 0;
        padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
        background: rgba(255,255,255,.96);
        border-top: 1px solid var(--line);
    }
    .action-bar .button { flex: 1; }
    .toast-region { right: 16px; bottom: 86px; left: 16px; }
    .toast { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}