/* EDC QR — cùng hệ thiết kế "liquid glass" với các lab EDC (face.edctech.vn, ocr.edctech.vn).
   Màu thương hiệu #29AAE2 lấy từ logo EDC. */

:root {
    --edc-blue:       #29AAE2;
    --edc-blue-dark:  #1C87BD;
    --edc-blue-light: #6FC6EE;

    --primary:      var(--edc-blue);
    --primary-dark: var(--edc-blue-dark);
    --primary-soft: rgba(41, 170, 226, .12);

    --text:  #16324A;
    --muted: #4C6478;
    --faint: #8098AC;

    --glass-bg:      rgba(255, 255, 255, .55);
    --glass-bg-soft: rgba(255, 255, 255, .38);
    --glass-border:  rgba(255, 255, 255, .6);
    --glass-shadow:  0 8px 32px rgba(22, 74, 116, .16);
    --line:          rgba(41, 170, 226, .18);
    --input-bg:      rgba(255, 255, 255, .72);

    --danger: #c22222;
    --success: #0f8a3f;
    --warning: #b45309;
    --radius: 20px;
    --font: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font: 15px/1.55 var(--font);
    color: var(--text);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    background: linear-gradient(180deg, #eef8fd 0%, #f6fbfe 45%, #ffffff 100%);
}

/* Các đốm màu mờ phía sau lớp kính */
body::before, body::after {
    content: "";
    position: fixed;
    border-radius: 50%;
    filter: blur(70px);
    z-index: -1;
    opacity: .55;
    pointer-events: none;
}
body::before { width: 480px; height: 480px; top: -160px; left: -140px; background: radial-gradient(circle, var(--edc-blue) 0%, transparent 70%); }
body::after { width: 560px; height: 560px; bottom: -220px; right: -180px; background: radial-gradient(circle, var(--edc-blue-light) 0%, transparent 70%); }

a { color: var(--edc-blue-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: 1.6rem; font-weight: 700; }
[hidden] { display: none !important; }
.icon { width: 1em; height: 1em; flex-shrink: 0; vertical-align: -.15em; }
.tag .icon { width: 13px; height: 13px; color: var(--edc-blue-dark); }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }
.center { text-align: center; }
.small { font-size: .85rem; }
.hint { display: block; color: var(--faint); font-size: .82rem; margin: .35rem 0 0; }

/* ---------- Kính (glass) dùng chung ---------- */
.card, .stat, .feature, .topbar, .landing__card, .menu__panel {
    background: var(--glass-bg);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* ---------- Header / footer ---------- */
.topbar { position: sticky; top: 0; z-index: 20; border-width: 0 0 1px; box-shadow: 0 4px 20px rgba(22, 74, 116, .08); }
.topbar__inner { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand__logo { height: 30px; width: auto; }
.brand__name { font-weight: 700; font-size: 1.15rem; padding-left: 12px; border-left: 2px solid var(--line); }
.nav { display: flex; align-items: center; gap: 4px; }
.nav__link { padding: 8px 14px; border-radius: 999px; color: var(--text); font-weight: 600; font-size: .92rem; cursor: pointer; }
.nav__link:hover { background: var(--primary-soft); color: var(--edc-blue-dark); text-decoration: none; }
.menu { position: relative; }
.menu summary { list-style: none; }
.menu summary::-webkit-details-marker { display: none; }
.menu__panel { position: absolute; right: 0; top: calc(100% + 8px); min-width: 190px; border-radius: 14px; padding: 6px; background: rgba(255, 255, 255, .85); }
.menu__panel a, .menu__panel button { display: block; width: 100%; padding: 9px 12px; border-radius: 10px; text-align: left; color: var(--text); background: none; border: 0; font: inherit; cursor: pointer; }
.menu__panel a:hover, .menu__panel button:hover { background: var(--primary-soft); text-decoration: none; }
.footer { color: var(--faint); font-size: .85rem; padding: 32px 0; margin-top: 48px; border-top: 1px solid var(--line); text-align: center; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 11px 24px; border-radius: 999px; border: 1px solid transparent;
    font: 600 .95rem var(--font); cursor: pointer; white-space: nowrap;
    transition: transform .15s, box-shadow .15s, background .15s, border-color .15s, opacity .15s;
}
.btn:hover { text-decoration: none; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn--primary {
    background: linear-gradient(180deg, var(--edc-blue-light) 0%, var(--edc-blue) 55%, var(--edc-blue-dark) 100%);
    color: #fff; border: none;
    box-shadow: 0 6px 20px rgba(41, 170, 226, .4), inset 0 1px 0 rgba(255, 255, 255, .5);
}
.btn--primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 10px 26px rgba(41, 170, 226, .48), inset 0 1px 0 rgba(255, 255, 255, .5); }
.btn--primary:active:not(:disabled) { transform: translateY(0); }
.btn--ghost { background: var(--glass-bg); color: var(--text); border-color: var(--line); }
.btn--ghost:hover:not(:disabled) { border-color: var(--edc-blue); color: var(--edc-blue-dark); background: rgba(255, 255, 255, .8); }
.btn--danger-ghost { background: var(--glass-bg); color: var(--danger); border-color: rgba(220, 38, 38, .2); }
.btn--danger-ghost:hover { border-color: var(--danger); background: rgba(220, 38, 38, .06); }
.btn--sm { padding: 6px 14px; font-size: .84rem; }
.btn--block { width: 100%; }
.btn--icon { padding: 0 14px; background: var(--glass-bg-soft); border-color: var(--line); color: var(--muted); }

/* ---------- Cards / layout ---------- */
.card { position: relative; border-radius: var(--radius); padding: 24px; margin-bottom: 20px; }
/* Viền sáng phía trên của lớp kính */
.card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(180deg, rgba(255, 255, 255, .9), rgba(255, 255, 255, 0));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}
.card__title {
    display: flex; align-items: center; gap: 10px;
    font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
    color: var(--muted); margin-bottom: 18px;
}
.card__head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.card__head .card__title { margin: 0; }
.page { padding-top: 32px; }
.page--narrow { max-width: 720px; }
.page__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
.page__head h1 { margin: 0; }
.page__actions { display: flex; gap: 8px; flex-wrap: wrap; }
.grid { display: grid; gap: 14px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid > .card { margin-bottom: 0; }
.grid + .card, .card + .grid { margin-top: 20px; }
.inline { display: flex; gap: 8px; }
.inline select { flex: 1; }

/* ---------- Alerts ---------- */
.alert { padding: 12px 16px; border-radius: 14px; margin: 16px 0; border: 1px solid; font-size: .92rem; backdrop-filter: blur(12px); }
.alert--success { background: rgba(22, 163, 74, .12); border-color: rgba(22, 163, 74, .25); color: var(--success); }
.alert--error { background: rgba(220, 38, 38, .1); border-color: rgba(220, 38, 38, .25); color: var(--danger); }
.alert--warning { background: rgba(245, 158, 11, .12); border-color: rgba(245, 158, 11, .3); color: var(--warning); }
.notice { background: var(--primary-soft); border-radius: 14px; padding: 12px 14px; font-size: .9rem; margin: 0 0 14px; word-break: break-word; }
.notice--lock { background: rgba(245, 158, 11, .12); color: var(--warning); }
.current-file .icon { color: var(--edc-blue-dark); }

/* ---------- Forms ---------- */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 6px; }
.field label small { color: var(--faint); }
.field--center { display: flex; align-items: flex-end; }
input[type="text"], input[type="email"], input[type="url"], input[type="tel"], input[type="password"],
input[type="search"], input[type="datetime-local"], input[type="number"], select, textarea {
    width: 100%; padding: 10px 14px; border: 1px solid var(--line); border-radius: 12px;
    font: inherit; color: inherit; background: var(--input-bg);
    transition: border-color .15s, box-shadow .15s, background .15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--edc-blue); background: #fff; box-shadow: 0 0 0 3px rgba(41, 170, 226, .2); }
input:disabled { background: var(--glass-bg-soft); color: var(--faint); }
textarea { resize: vertical; }
input[type="color"] { width: 48px; height: 42px; padding: 3px; border: 1px solid var(--line); border-radius: 12px; background: var(--input-bg); cursor: pointer; }
input[type="range"] { width: 100%; accent-color: var(--edc-blue); }
input[type="file"] {
    width: 100%; padding: 14px; border: 2px dashed rgba(41, 170, 226, .35); border-radius: 14px;
    background: var(--glass-bg-soft); font-size: .88rem; color: var(--faint); cursor: pointer;
    transition: border-color .2s, background .2s;
}
input[type="file"]:hover { border-color: var(--edc-blue); background: rgba(41, 170, 226, .08); }
.checkbox { display: inline-flex !important; align-items: center; gap: 8px; color: var(--text) !important; cursor: pointer; margin-top: 8px; }
.checkbox input { accent-color: var(--edc-blue); width: 16px; height: 16px; }
.field__error { color: var(--danger); font-size: .82rem; margin: 6px 0 0; }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }

/* ---------- Hero / features ---------- */
.hero { padding: 52px 0 30px; text-align: center; }
.hero h1 { font-size: clamp(1.8rem, 4vw, 2.7rem); font-weight: 800; letter-spacing: -.02em; }
.hero p { color: var(--muted); max-width: 640px; margin: 0 auto; font-size: 1.05rem; }
.accent { background: linear-gradient(90deg, var(--edc-blue), var(--edc-blue-dark)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 36px; }
.feature { border-radius: var(--radius); padding: 22px; }
.feature__icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; margin-bottom: 12px; color: #fff; background: linear-gradient(180deg, var(--edc-blue-light), var(--edc-blue-dark)); box-shadow: 0 6px 16px rgba(41, 170, 226, .3); }
.feature__icon .icon { width: 22px; height: 22px; }
.feature h3 { font-size: 1rem; }
.feature p { color: var(--muted); margin: 0; font-size: .9rem; }

/* ---------- Builder ---------- */
.builder { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 20px; align-items: start; }
.builder__side { position: sticky; top: 86px; }
.step {
    display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0;
    background: linear-gradient(180deg, var(--edc-blue-light), var(--edc-blue-dark)); color: #fff; font-size: .75rem; letter-spacing: 0;
}

.type-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(112px, 1fr)); gap: 10px; }
.type-chip {
    position: relative; display: flex; flex-direction: column; align-items: center; gap: 4px;
    padding: 14px 8px 12px; border: 1.5px solid var(--line); border-radius: 16px;
    background: var(--glass-bg-soft); cursor: pointer; text-align: center;
    transition: border-color .15s, background .15s, transform .15s;
}
.type-chip:hover { border-color: var(--edc-blue-light); background: rgba(255, 255, 255, .7); }
.type-chip input { position: absolute; opacity: 0; pointer-events: none; }
.type-chip:has(input:checked) { border-color: var(--edc-blue); background: rgba(41, 170, 226, .12); box-shadow: 0 4px 14px rgba(41, 170, 226, .2); }
.type-chip:has(input:focus-visible) { box-shadow: 0 0 0 3px rgba(41, 170, 226, .3); }
.type-chip.is-disabled { opacity: .4; cursor: not-allowed; }
.type-chip__icon { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; color: var(--edc-blue-dark); background: rgba(41, 170, 226, .1); transition: background .15s, color .15s; }
.type-chip__icon .icon { width: 22px; height: 22px; }
.type-chip:has(input:checked) .type-chip__icon { color: #fff; background: linear-gradient(180deg, var(--edc-blue-light), var(--edc-blue-dark)); }
.type-chip__label { font-size: .82rem; font-weight: 600; }
.type-chip__badge { position: absolute; top: 5px; right: 5px; font-size: .62rem; font-weight: 700; padding: 1px 7px; border-radius: 99px; background: rgba(41, 170, 226, .15); color: var(--edc-blue-dark); }

.mode-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 6px; }
.mode-toggle > .notice { grid-column: 1 / -1; margin: 0; }
.mode-option { display: flex; gap: 10px; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 16px; background: var(--glass-bg-soft); cursor: pointer; }
.mode-option:has(input:checked) { border-color: var(--edc-blue); background: rgba(41, 170, 226, .12); }
.mode-option input { accent-color: var(--edc-blue); margin-top: 4px; }
.mode-option small { display: block; color: var(--muted); font-size: .8rem; }
.mode-option.is-disabled { opacity: .45; cursor: not-allowed; }

.design-group { padding: 16px 0; border-top: 1px solid var(--line); }
.design-group:first-of-type { border-top: 0; padding-top: 0; }
.design-group h3 { font-size: .85rem; font-weight: 600; color: var(--text); margin-bottom: 10px; }
.design-group summary { font-weight: 600; font-size: .85rem; cursor: pointer; margin-bottom: 10px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip span { display: inline-block; padding: 7px 15px; border: 1.5px solid var(--line); border-radius: 99px; background: var(--glass-bg-soft); font-size: .85rem; cursor: pointer; }
.chip input:checked + span { border-color: var(--edc-blue); background: rgba(41, 170, 226, .12); color: var(--edc-blue-dark); font-weight: 600; }
.presets { display: flex; gap: 10px; flex-wrap: wrap; }
.preset { width: 38px; height: 38px; border-radius: 50%; border: 3px solid #fff; outline: 2px solid var(--line); cursor: pointer; box-shadow: 0 4px 12px rgba(22, 74, 116, .15); transition: transform .15s; }
.preset:hover { transform: scale(1.08); }

.preview-card { text-align: center; }
.qr-preview { display: grid; place-items: center; min-height: 280px; }
.qr-preview canvas, .qr-preview svg { max-width: 100%; height: auto; border-radius: 12px; box-shadow: 0 4px 16px rgba(22, 74, 116, .1); }
.qr-preview.is-empty { opacity: .15; filter: blur(1px); }
.preview-status { color: var(--faint); font-size: .85rem; min-height: 1.3em; margin: 12px 0; }
.download { display: flex; gap: 6px; margin-bottom: 14px; }
.download select { flex: 1; padding: 8px 10px; min-width: 0; }
.download .btn { padding: 8px 12px; }

.repeater { display: grid; gap: 8px; margin-bottom: 8px; }
.repeater__row { display: grid; grid-template-columns: 1fr 2fr auto; gap: 8px; }
.thumbs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 10px; }
.thumb { display: flex !important; flex-direction: column; align-items: center; gap: 4px; font-size: .8rem !important; }
.thumb img { width: 84px; height: 84px; object-fit: cover; border-radius: 12px; border: 1px solid var(--line); }
.current-file { margin: 0 0 8px; font-size: .9rem; }

/* ---------- Dashboard ---------- */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
.stat { border-radius: var(--radius); padding: 18px 20px; display: flex; flex-direction: column; }
.stat__value { font-size: 1.7rem; font-weight: 800; color: var(--edc-blue-dark); }
.stat__value--sm { font-size: 1.05rem; padding-top: .45rem; color: var(--text); }
.stat__label { color: var(--faint); font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.toolbar { display: flex; gap: 10px; margin-bottom: 18px; }
.toolbar input { flex: 1; }
.toolbar select { width: auto; }
.qr-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.qr-item { display: flex; gap: 18px; margin: 0; }
.qr-item.is-paused .qr-item__code { opacity: .35; }
.qr-item__code { flex-shrink: 0; width: 112px; height: 112px; }
.qr-item__code canvas { border-radius: 10px; }
.qr-item__body { min-width: 0; flex: 1; }
.qr-item__meta { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 6px; }
.qr-item__name { font-size: 1.05rem; margin: 0 0 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qr-item__name a { color: var(--text); }
.qr-item__sub { color: var(--muted); font-size: .85rem; margin: 0 0 10px; word-break: break-all; }
.qr-item__actions { display: flex; gap: 6px; flex-wrap: wrap; }
.qr-item__actions form { margin: 0; }
.tag { display: inline-flex; align-items: center; gap: 4px; font-size: .75rem; font-weight: 600; padding: 2px 10px; border-radius: 99px; background: var(--glass-bg-soft); border: 1px solid var(--line); }
.tag--blue { background: rgba(41, 170, 226, .15); color: var(--edc-blue-dark); border-color: transparent; }
.tag--warn { background: rgba(245, 158, 11, .14); color: var(--warning); border-color: transparent; }
.empty { text-align: center; padding: 48px 20px; }
.empty__icon { font-size: 3rem; font-weight: 800; color: var(--edc-blue-light); opacity: .6; margin-bottom: 8px; }
.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 24px; }
.pagination a { min-width: 38px; padding: 8px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--glass-bg); text-align: center; color: var(--text); }
.pagination a.is-active { background: var(--edc-blue); border-color: var(--edc-blue); color: #fff; }

/* ---------- Stats ---------- */
.stats-layout { display: flex; gap: 16px; margin-bottom: 20px; }
.stats-layout .stats-row { margin: 0; }
.stats-row--grow { flex: 1; grid-template-columns: repeat(2, 1fr); }
.stats-qr { display: flex; flex-direction: column; align-items: center; gap: 8px; margin: 0; }
.chart-box { position: relative; height: 280px; }
.segmented { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; background: var(--glass-bg-soft); }
.segmented a { padding: 6px 14px; font-size: .85rem; color: var(--text); }
.segmented a:hover { text-decoration: none; background: var(--primary-soft); }
.segmented a.is-active { background: var(--edc-blue); color: #fff; }
.bars { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.bars__label { display: flex; justify-content: space-between; font-size: .88rem; margin-bottom: 4px; }
.bars__label span:last-child { color: var(--faint); }
.bars__track { height: 8px; background: rgba(41, 170, 226, .1); border-radius: 99px; overflow: hidden; }
.bars__fill { height: 100%; background: linear-gradient(90deg, var(--edc-blue-light), var(--edc-blue)); border-radius: 99px; }
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.table th, .table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
.table th { color: var(--faint); font-weight: 700; font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; }

/* ---------- Auth ---------- */
.auth { display: grid; place-items: center; padding-top: 48px; }
.auth__card { width: 100%; max-width: 420px; padding: 32px; }
.auth__card h1 { font-size: 1.45rem; }

/* ---------- Landing (trang người quét nhìn thấy) ---------- */
.landing-body { --landing-accent: var(--edc-blue); }
.landing { max-width: 520px; margin: 0 auto; padding: 36px 16px 12px; }
.landing__card { position: relative; border-radius: 24px; padding: 28px 22px; display: flex; flex-direction: column; gap: 14px; }
.landing__icon { display: grid; place-items: center; width: 72px; height: 72px; margin: 0 auto; border-radius: 22px; color: #fff; background: linear-gradient(180deg, var(--edc-blue-light), var(--edc-blue-dark)); box-shadow: 0 8px 24px rgba(41, 170, 226, .35); }
.landing__icon .icon { width: 34px; height: 34px; }
.landing__title { text-align: center; font-size: 1.4rem; margin: 0; }
.landing__text { word-break: break-word; background: var(--glass-bg-soft); border: 1px solid var(--line); padding: 16px; border-radius: 14px; }
.landing__buttons { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.landing__footer { display: flex; justify-content: center; padding: 20px 16px; }
.landing__logo { height: 20px; width: auto; opacity: .7; }
.landing .muted.center { margin: 0; }
.avatar { width: 88px; height: 88px; margin: 0 auto; border-radius: 50%; display: grid; place-items: center; font-size: 2rem; font-weight: 800; color: #fff; background: linear-gradient(180deg, var(--edc-blue-light), var(--edc-blue-dark)); box-shadow: 0 8px 24px rgba(41, 170, 226, .35); }
.avatar--accent { background: var(--landing-accent); }
.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.contact-list a { display: flex; gap: 12px; align-items: center; padding: 12px 14px; border-radius: 14px; background: var(--glass-bg-soft); border: 1px solid var(--line); color: var(--text); word-break: break-word; }
.contact-list a:hover { text-decoration: none; background: rgba(41, 170, 226, .1); }
.contact-list small { display: block; color: var(--faint); font-size: .75rem; }
.contact-list__icon { display: grid; place-items: center; width: 38px; height: 38px; flex-shrink: 0; border-radius: 12px; color: var(--edc-blue-dark); background: rgba(41, 170, 226, .12); }
.contact-list__icon .icon { width: 19px; height: 19px; }
.link-list { display: grid; gap: 10px; }
.link-list a { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 14px; border-radius: 999px; font-weight: 600; background: var(--landing-accent); color: #fff; box-shadow: 0 6px 18px rgba(22, 74, 116, .18); transition: transform .15s; }
.link-list a:hover { text-decoration: none; transform: translateY(-1px); }
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.gallery img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 14px; }
.pdf-frame { width: 100%; height: 70vh; border: 1px solid var(--line); border-radius: 14px; background: #fff; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .features { grid-template-columns: repeat(2, 1fr); }
    .qr-list { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
    .builder { grid-template-columns: 1fr; }
    .builder__side { position: static; }
    .grid--3 { grid-template-columns: 1fr 1fr; }
    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .stats-layout { flex-direction: column; }
}
@media (max-width: 600px) {
    h1 { font-size: 1.4rem; }
    .card { padding: 18px; }
    .grid--2, .grid--3, .features, .mode-toggle { grid-template-columns: 1fr; }
    .brand__name { display: none; }
    .nav__link { padding: 8px 10px; font-size: .88rem; }
    .nav .btn { display: none; }
    .qr-item { flex-direction: column; align-items: center; text-align: center; }
    .qr-item__meta, .qr-item__actions { justify-content: center; }
    .qr-item__name { white-space: normal; }
    .repeater__row { grid-template-columns: 1fr auto; }
    .repeater__row input:first-child { grid-column: 1 / -1; }
    .toolbar { flex-wrap: wrap; }
}