/* =====================================================================
   SAVER O2 Display Admin — "Clean-Air Control Room"
   Mobile-first premium UI
   Signature: live device preview + oxygen-teal gradient
   ===================================================================== */

@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css");
@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&display=swap");
/* 미리보기용 — 실제 TV 디스플레이와 같은 폰트 */
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;700&display=swap");

:root {
  /* atmosphere */
  --mist:      #F4F8FB;
  --mist-2:    #E9F1F6;
  --surface:   #FFFFFF;

  /* ink */
  --ink:       #0E2A3B;
  --ink-soft:  #47606F;
  --ink-faint: #8A9EAC;
  --line:      #E2ECF2;
  --line-soft: #EEF4F8;

  /* oxygen signature */
  --o2-from:   #16B1B8;
  --o2-to:     #2E6FB0;
  --o2-grad:   linear-gradient(135deg, #16B1B8 0%, #2E6FB0 100%);
  --o2-glow:   rgba(30, 130, 160, 0.28);

  --forest:    #22A368;
  --forest-soft:#E4F6EC;
  --danger:    #E0574B;
  --danger-soft:#FCEAE8;
  --warn:      #E0913A;

  /* depth */
  --sh-sm: 0 1px 2px rgba(14,42,59,.05), 0 2px 8px rgba(14,42,59,.05);
  --sh-md: 0 6px 20px rgba(14,42,59,.07), 0 14px 40px rgba(14,42,59,.06);
  --sh-lg: 0 10px 44px rgba(20,90,130,.16);

  /* geometry */
  --r-card: 22px;
  --r-ctrl: 14px;
  --r-pill: 999px;

  --font: "Pretendard", system-ui, -apple-system, "Apple SD Gothic Neo", sans-serif;
  --font-latin: "Space Grotesk", var(--font);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--mist);
  /* airy atmospheric wash */
  background-image:
    radial-gradient(1200px 600px at 100% -10%, rgba(22,177,184,.10), transparent 55%),
    radial-gradient(900px 500px at -10% 8%, rgba(46,111,176,.10), transparent 50%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

/* ---------- top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  background: rgba(255,255,255,.72);
  backdrop-filter: saturate(1.4) blur(16px);
  -webkit-backdrop-filter: saturate(1.4) blur(16px);
  border-bottom: 1px solid var(--line-soft);
}

.brand { display: flex; align-items: center; gap: 11px; min-width: 0; }

.brand__mark {
  width: 34px; height: 34px;
  border-radius: 11px;
  background: var(--o2-grad);
  box-shadow: 0 4px 14px var(--o2-glow);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  position: relative;
}
/* breathing O2 ring inside the mark */
.brand__mark::after {
  content: "";
  width: 15px; height: 15px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,.9);
  animation: breathe 4.5s ease-in-out infinite;
}

.brand__text { min-width: 0; }
.brand__eyebrow {
  font-family: var(--font-latin);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--o2-to);
  line-height: 1;
}
.brand__title {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar__right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.acct-chip {
  font-family: var(--font-latin);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-soft);
  background: var(--mist-2);
  padding: 6px 11px;
  border-radius: var(--r-pill);
  max-width: 40vw;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- layout ---------- */
.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 18px 16px 64px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ---------- buttons ---------- */
.btn {
  appearance: none;
  border: none;
  border-radius: var(--r-ctrl);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  padding: 13px 20px;
  min-height: 48px;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .16s ease, background .16s ease, opacity .16s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn:active { transform: translateY(1px) scale(.99); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.btn--primary {
  color: #fff;
  background: var(--o2-grad);
  box-shadow: 0 6px 18px var(--o2-glow);
}
.btn--primary:hover:not(:disabled) { box-shadow: 0 8px 24px var(--o2-glow); }

.btn--ghost {
  background: var(--mist-2);
  color: var(--ink-soft);
  min-height: 40px;
  padding: 9px 14px;
  font-size: 13px;
}
.btn--ghost:hover { background: #dde8ef; }

.btn--danger-soft {
  background: var(--danger-soft);
  color: var(--danger);
}

.btn--block { width: 100%; }

/* ---------- cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-card);
  padding: 20px;
  box-shadow: var(--sh-sm);
}

.card__head { margin-bottom: 16px; }
.card__eyebrow {
  font-family: var(--font-latin);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--o2-to);
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 7px;
}
.card__eyebrow::before {
  content: "";
  width: 16px; height: 2px; border-radius: 2px;
  background: var(--o2-grad);
}
.card__title {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: 0;
}
.card__desc {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

/* =====================================================================
   SIGNATURE — live device preview
   ===================================================================== */
.preview { padding: 0; overflow: hidden; }

.preview__stage {
  position: relative;
  padding: 22px 20px 16px;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(22,177,184,.16), transparent 60%),
    linear-gradient(180deg, #0d2233 0%, #123047 60%, #16405c 100%);
}

/* 실제 디스플레이 화면 스크린샷을 배경으로 — O2 원·패널·SAVER 로고 포함 */
.preview__screen {
  position: relative;
  aspect-ratio: 1280 / 720;
  border-radius: 14px;
  overflow: hidden;
  background: #17557a url("../img/display-bg.jpg?v=20260721b") center / cover no-repeat;
  box-shadow: 0 18px 44px rgba(0,0,0,.42), inset 0 0 0 1px rgba(255,255,255,.14);
}

/* =========================================================
   TV 미러 스테이지 — 실제 TV 좌표계(1280×720)를 그대로 만들고
   scale(--pv-scale)로 축소. 아래 값들은 o2_iot_display/css/display.css
   원본 px/vh/vw 값을 720p 기준으로 환산한 것 (임의 변경 금지)
   ========================================================= */
.pv-stage {
  position: absolute;
  top: 0; left: 0;
  width: 1280px;
  height: 720px;
  transform-origin: top left;
  transform: scale(var(--pv-scale, 0.3));
  font-family: 'Noto Sans KR', system-ui, sans-serif;
  pointer-events: none;
  z-index: 2;
}

/* 고객 로고 — display.css .customer-logo 미러 (4.5vh/7vh/24vw → 720p px) */
.pv-logo {
  position: absolute;
  top: 32.4px;
  left: 50%;
  transform: translateX(-50%);
  max-height: 50.4px;
  max-width: 307.2px;
  object-fit: contain;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.18));
}
.pv-logo.is-empty { display: none; }

.preview__logo-hint {
  position: absolute;
  top: 5%;
  left: 50%;
  transform: translateX(-50%);
  font-size: clamp(8px, 1.7vw, 11px);
  letter-spacing: .04em;
  color: rgba(255,255,255,.7);
  background: rgba(10,30,45,.28);
  border: 1px dashed rgba(255,255,255,.45);
  border-radius: var(--r-pill);
  padding: 3px 11px;
  z-index: 3;
  white-space: nowrap;
}

/* =========================================================
   O2 구체 — o2_circle.css / bubble-wrap.css 라이브 미러
   위치·크기는 실기기 화면 기준(중심 81%, 44%)으로 확정된 값
   ========================================================= */
.pv-o2-circle {
  position: absolute;
  top: 85px;
  left: 805px;
  width: 465px;
  aspect-ratio: 1 / 1;
  z-index: 1;
}
.pv-rotator {
  position: absolute;
  inset: 0;
  animation: pvRotate 8s linear infinite;
  transform-origin: center;
}
.pv-pulsator {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  animation: pvPulse 3.6s ease-in-out infinite;
  transform-origin: center;
}
@keyframes pvRotate { to { transform: rotate(360deg); } }
@keyframes pvPulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(0.965); } }

.pv-bubble-text {
  position: absolute;
  top: 45%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  text-align: center;
  color: #316585;
  z-index: 10;
}
.pv-title-line { display: block; text-align: center; white-space: nowrap; }
.pv-bubble-text .pv-title {
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 37px;
  font-weight: 700;
  letter-spacing: -0.04em;
  display: inline;
  color: #316585;
}
.pv-value {
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  font-size: 98px;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1;
  margin-top: 6px;
  color: #316585;
}
.pv-value span {
  font-size: 0.55em;
  margin-left: 0.12em;
  position: relative;
  top: 0.06em;
  font-weight: 700;
}
.pv-forest-badge {
  position: absolute;
  bottom: 27%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  width: 90px;
  height: 28px;
  box-sizing: border-box;
  overflow: hidden;
  padding: 0 4px 0 8px;
  background: transparent;
  border: 2px solid rgba(49, 101, 133, 0.5);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  color: #316585;
  letter-spacing: -0.01em;
  white-space: nowrap;
  z-index: 20;
}
.pv-forest-badge-icon {
  height: 26px;
  width: 26px;
  flex-shrink: 0;
  margin-left: -5px;
}

/* 파란 배너 — display.css .blue-banner 미러 */
.pv-blue-banner {
  position: absolute;
  bottom: 90px;
  left: 0;
  width: 100%;
  min-height: 36px;
  background: rgba(49, 101, 133, 0.72);
  color: #ffffff;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.01em;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5px 40px;
  box-sizing: border-box;
  overflow: hidden;
}
.pv-blue-banner span {
  display: inline-block;
  white-space: nowrap;
}

/* 하단 흰 띠 — display.css .bottom-text 미러 */
.pv-bottom-text {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: #000000;
  text-align: center;
  white-space: nowrap;
  padding: 6px 0 14px;
  background: rgba(255, 255, 255, 0.98);
  box-sizing: border-box;
  min-height: 90px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}
.pv-bottom-text #pv-bottom-ko { display: block; text-align: center; width: 100%; }
.pv-bottom-text .ko-main { display: block; width: 100%; font-weight: 500; }
.pv-bottom-text .ko-forest { color: #3C769A; font-weight: 700; }
.pv-bottom-text .pv-en-sub {
  margin-top: 10px;
  font-size: 0.58em;
  color: #393939;
  font-weight: 400;
  line-height: 1.2;
  text-align: center;
  width: 100%;
}

/* 문구 전환 애니메이션 — display.css txtSlide/txtFade 미러 */
@keyframes pvSlideOut { from { transform: translateY(0);     opacity: 1; } to { transform: translateY(-120%); opacity: 0; } }
@keyframes pvSlideIn  { from { transform: translateY(80%);   opacity: 0; } to { transform: translateY(0);     opacity: 1; } }
@keyframes pvFadeOut  { from { opacity: 1; } to { opacity: 0; } }
@keyframes pvFadeIn   { from { opacity: 0; } to { opacity: 1; } }
.pv-slide-out { animation: pvSlideOut 0.32s ease forwards; }
.pv-slide-in  { animation: pvSlideIn 0.32s ease forwards; }
.pv-fade-out  { animation: pvFadeOut 0.32s ease forwards; }
.pv-fade-in   { animation: pvFadeIn 0.32s ease forwards; }

.preview__caption {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px 15px;
  font-size: 12px;
  color: var(--ink-soft);
  background: var(--surface);
}
.live-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--forest);
  box-shadow: 0 0 0 0 rgba(34,163,104,.55);
  animation: pulse 2s ease-out infinite;
}

/* =====================================================================
   Logo manager
   ===================================================================== */
.logo-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.logo-preview-box {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 1;
  border-radius: var(--r-ctrl);
  border: 1px solid var(--line);
  background:
    linear-gradient(45deg, #eef4f8 25%, transparent 25%, transparent 75%, #eef4f8 75%),
    linear-gradient(45deg, #eef4f8 25%, #fbfdff 25%, #fbfdff 75%, #eef4f8 75%);
  background-size: 18px 18px;
  background-position: 0 0, 9px 9px;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.logo-preview { max-width: 82%; max-height: 74%; object-fit: contain; }
.logo-empty { font-size: 13px; color: var(--ink-faint); }

.file-drop {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 15px 16px;
  border-radius: var(--r-ctrl);
  border: 1.5px dashed #a9c2d1;
  background: var(--mist);
  font-size: 13.5px;
  color: var(--ink-soft);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.file-drop:hover { border-color: var(--o2-to); background: var(--mist-2); }
.file-drop__icon {
  width: 34px; height: 34px; flex-shrink: 0;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  display: grid; place-items: center;
  font-size: 17px;
}
.file-drop__text { min-width: 0; word-break: break-all; }

.logo-btns { display: flex; gap: 10px; }
.logo-btns .btn { flex: 1; }

.hint {
  margin: 2px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-faint);
}

/* =====================================================================
   Message groups
   ===================================================================== */
.group + .group { margin-top: 18px; }
.group__label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.group__count {
  font-family: var(--font-latin);
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-faint);
  background: var(--mist-2);
  border-radius: var(--r-pill);
  padding: 1px 8px;
}

.msg-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }

/* fixed (locked) */
.msg-fixed {
  display: flex;
  gap: 9px;
  padding: 12px 14px;
  border-radius: var(--r-ctrl);
  background: var(--mist);
  border: 1px solid var(--line-soft);
}
.msg-fixed__lock { color: var(--ink-faint); font-size: 12px; margin-top: 1px; }
.msg-fixed__body { min-width: 0; }
.msg-fixed__ko { font-size: 13.5px; color: var(--ink-soft); word-break: break-word; }
.msg-fixed__en {
  font-family: var(--font-latin);
  font-size: 11px; color: var(--ink-faint);
  margin-top: 2px; word-break: break-word;
}

/* editable item — text on top, actions below (never squished) */
.msg {
  border-radius: var(--r-ctrl);
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 13px 14px;
  box-shadow: var(--sh-sm);
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.msg.is-off { background: var(--mist); opacity: .72; }

.msg__body { min-width: 0; }
.msg__ko { font-size: 14.5px; color: var(--ink); word-break: break-word; line-height: 1.45; }
.msg.is-off .msg__ko { text-decoration: line-through; color: var(--ink-faint); }
.msg__en {
  font-family: var(--font-latin);
  font-size: 12px; color: var(--ink-soft);
  margin-top: 3px; word-break: break-word;
}

.msg__edit { display: flex; flex-direction: column; gap: 8px; }

.msg__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding-top: 2px;
  border-top: 1px solid var(--line-soft);
  margin-top: 1px;
  padding-top: 11px;
}
.msg__actions-r { display: flex; align-items: center; gap: 4px; }

/* toggle switch */
.toggle { position: relative; width: 46px; height: 27px; flex-shrink: 0; cursor: pointer; }
.toggle input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.toggle__track {
  position: absolute; inset: 0;
  border-radius: var(--r-pill);
  background: #cdd9e2;
  transition: background .18s ease;
}
.toggle__track::before {
  content: "";
  position: absolute; top: 3px; left: 3px;
  width: 21px; height: 21px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 5px rgba(0,0,0,.22);
  transition: transform .18s ease;
}
.toggle input:checked + .toggle__track { background: var(--forest); }
.toggle input:checked + .toggle__track::before { transform: translateX(19px); }
.toggle input:focus-visible + .toggle__track { outline: 2px solid var(--o2-to); outline-offset: 2px; }

/* icon action buttons — touch friendly */
.iconbtn {
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 11px;
  font-size: 15px;
  color: var(--ink-soft);
  cursor: pointer;
  display: grid; place-items: center;
  transition: background .12s, border-color .12s, transform .1s;
}
.iconbtn:hover:not(:disabled) { background: var(--mist-2); }
.iconbtn:active:not(:disabled) { transform: scale(.94); }
.iconbtn:disabled { opacity: .3; cursor: not-allowed; }
.iconbtn--danger:hover:not(:disabled) { background: var(--danger-soft); border-color: #f3c9c4; color: var(--danger); }
.iconbtn--save { background: var(--forest-soft); border-color: #bfe6cf; color: var(--forest); }

.empty {
  font-size: 13px;
  color: var(--ink-faint);
  padding: 14px;
  text-align: center;
  border: 1px dashed var(--line);
  border-radius: var(--r-ctrl);
  background: var(--mist);
}

/* 표시 장치 선택 라디오 */
.dev-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 13px 14px;
  border-radius: var(--r-ctrl);
  background: var(--mist);
  border: 1px solid var(--line-soft);
  cursor: pointer;
  transition: border-color .14s, background .14s, box-shadow .14s;
}
.dev-item:hover { border-color: var(--line); }
.dev-item input {
  width: 17px; height: 17px; margin: 0;
  accent-color: var(--o2-to);
  cursor: pointer;
  flex: none;
}
.dev-item.is-selected {
  background: var(--surface);
  border-color: var(--o2-to);
  box-shadow: 0 0 0 3px rgba(46, 111, 176, .10);
}
.dev-item__body { min-width: 0; }
.dev-item__name { font-size: 14px; font-weight: 700; color: var(--ink); }
.dev-item__id {
  font-family: var(--font-latin);
  font-size: 11.5px; color: var(--ink-faint);
  margin-top: 2px; word-break: break-all;
}
.dev-warn { margin-top: 10px; font-size: 12.5px; color: var(--warn); }

/* TV 목록 (TV별 표시 장치) */
.tvu-item {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 14px;
  border-radius: var(--r-ctrl);
  background: var(--mist);
  border: 1px solid var(--line-soft);
}
.tvu-item__head {
  display: flex;
  align-items: center;
  gap: 9px;
}
.tvu-item__name { flex: 1; min-width: 0; font-weight: 700; }
.tvu-item__del { flex: none; }
.tvu-item__meta {
  font-family: var(--font-latin);
  font-size: 11.5px;
  color: var(--ink-faint);
  word-break: break-all;
}
.tvu-item__devrow {
  display: flex;
  align-items: center;
  gap: 10px;
}
.tvu-item__devlabel {
  flex: none;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-soft);
}
.tvu-item__device { flex: 1; min-width: 0; cursor: pointer; }

/* inputs */
.field {
  width: 100%;
  font-family: var(--font);
  font-size: 16px; /* ≥16 prevents iOS zoom */
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-ctrl);
  padding: 13px 14px;
  outline: none;
  transition: border-color .14s, box-shadow .14s;
}
.field::placeholder { color: var(--ink-faint); }
.field:focus { border-color: var(--o2-to); box-shadow: 0 0 0 3px rgba(46,111,176,.14); }
.field--sm { font-size: 15px; padding: 11px 13px; }

.add {
  margin-top: 13px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 14px;
  border-radius: var(--r-ctrl);
  background: var(--mist);
  border: 1px solid var(--line-soft);
}
.add__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink-soft);
}

/* feedback toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translate(-50%, 20px);
  max-width: min(92vw, 460px);
  background: var(--ink);
  color: #fff;
  font-size: 13.5px;
  font-weight: 500;
  padding: 13px 18px;
  border-radius: 14px;
  box-shadow: var(--sh-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .22s cubic-bezier(.2,.8,.2,1);
  z-index: 100;
  text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.ok { background: #12503a; }
.toast.err { background: #7c2b25; }

.hidden { display: none !important; }

/* ---------- motion / a11y ---------- */
@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: .85; }
  50%      { transform: scale(1.06); opacity: 1; }
}
.preview__aura { transform-origin: center; }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(34,163,104,.5); }
  70%  { box-shadow: 0 0 0 7px rgba(34,163,104,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,163,104,0); }
}

:focus-visible { outline: 2px solid var(--o2-to); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- tablet ---------- */
@media (min-width: 560px) {
  .wrap { padding: 26px 22px 72px; gap: 22px; }
  .card { padding: 26px; }
  .preview__stage { padding: 28px 26px 18px; }
  .logo-grid { flex-direction: row; align-items: stretch; }
  .logo-preview-box { width: 46%; aspect-ratio: auto; }
  .logo-actions { flex: 1; display: flex; flex-direction: column; gap: 12px; }
  .add--row { flex-direction: row; align-items: flex-end; }
  .add--row .add__fields { flex: 1; display: flex; flex-direction: column; gap: 9px; }
  .add--row .btn { width: auto; white-space: nowrap; }
}

/* ---------- desktop: preview as sticky sidebar, controls on the right ---------- */
@media (min-width: 940px) {
  .topbar { padding: 16px 32px; }
  .brand__title { font-size: 16px; }

  .wrap {
    max-width: 1160px;
    display: grid;
    grid-template-columns: 460px minmax(0, 1fr);
    align-items: start;
    gap: 24px;
    padding: 30px 32px 88px;
  }
  .preview {
    grid-column: 1;
    grid-row: 1;
    position: sticky;
    top: 90px;
  }
  .card:not(.preview) { grid-column: 2; }

  /* logo preview a bit larger on desktop */
  .logo-preview-box { width: 40%; }
}

/* ---------- wide desktop: two-up control columns ---------- */
@media (min-width: 1280px) {
  .wrap { max-width: 1360px; grid-template-columns: 520px minmax(0, 1fr); }
}