:root {
  --bg: #0b1020;
  /* Less glassy, more premium solid surfaces */
  --card: rgba(16, 22, 44, 0.92);
  --card2: rgba(16, 22, 44, 0.80);
  --cardBorder: rgba(255, 255, 255, 0.10);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --faint: rgba(255, 255, 255, 0.58);
  --shadow: rgba(0, 0, 0, 0.38);
  --shadow2: rgba(0, 0, 0, 0.55);
  --primary: #7c5cff;
  --primary2: #25d3ff;
  --primary3: #33d69f;
  --danger: #ff4d6d;
  --success: #33d69f;
  --radius: 16px;
  --radius2: 14px;
  --ring: rgba(124, 92, 255, 0.35);
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 15% -10%, rgba(124, 92, 255, 0.20), transparent 60%),
    radial-gradient(1000px 700px at 110% 20%, rgba(37, 211, 255, 0.16), transparent 55%),
    radial-gradient(900px 700px at 40% 120%, rgba(51, 214, 159, 0.10), transparent 58%),
    linear-gradient(180deg, #070a14 0%, #0a1022 45%, #070a14 100%);
}

.page {
  max-width: 980px;
  padding: 20px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

/* =========================
   Responsive layout system
   Breakpoints:
   - Mobile: < 600px
   - Tablet (iPad): >= 600px
   - Laptop: >= 1024px
   - Desktop: >= 1280px
   ========================= */

@media (max-width: 599px) {
  .page {
    padding: 14px;
    gap: 14px;
  }
  .card { padding: 14px; }
  .subtitle { font-size: 14px; }
  .title { font-size: clamp(20px, 6vw, 28px); }
  .actions .btn { flex: 1 1 calc(50% - 10px); min-width: unset; }
  .pickers { grid-template-columns: 1fr; }
}

@media (min-width: 600px) and (max-width: 1023px) {
  .page {
    padding: 18px;
    gap: 16px;
    max-width: 1060px;
  }
  .card { padding: 18px; }
  .title { font-size: clamp(24px, 3.6vw, 34px); }
}

@media (min-width: 1024px) and (max-width: 1279px) {
  .page {
    padding: 22px;
    gap: 18px;
    max-width: 1160px;
  }
  .card { padding: 20px; }
}

@media (min-width: 1280px) {
  .page {
    padding: 26px;
    gap: 20px;
    max-width: 1280px;
  }
  .card { padding: 22px; }
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 2px 0;
}

.topnav {
  display: flex;
  justify-content: flex-end;
  padding: 0 2px 6px;
}

.topnav__link {
  color: rgba(255, 255, 255, 0.86);
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(16, 22, 44, 0.85);
  padding: 10px 12px;
  border-radius: 999px;
  transition: transform 120ms ease, border-color 120ms ease;
}

.topnav__link:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.22);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand__mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background:
    radial-gradient(14px 14px at 30% 30%, rgba(255, 255, 255, 0.65), transparent 60%),
    linear-gradient(135deg, rgba(124, 92, 255, 0.95), rgba(37, 211, 255, 0.55));
  box-shadow: 0 10px 22px rgba(124, 92, 255, 0.18), 0 10px 30px var(--shadow2);
  border: 1px solid rgba(255, 255, 255, 0.16);
  flex: 0 0 auto;
}

.brand__text {
  min-width: 0;
}

.brand__eyebrow {
  color: rgba(255, 255, 255, 0.70);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.title {
  margin: 0;
  font-size: clamp(22px, 3.4vw, 34px);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.subtitle {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.card {
  background: linear-gradient(180deg, var(--card), var(--card2));
  border: 1px solid var(--cardBorder);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
  padding: 18px;
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.14);
}

.form {
  display: grid;
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
}

.field__row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.field__chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.pickers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 6px;
}

.pickerBtn {
  min-width: unset;
}

.iconBtn {
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  padding: 16px;
  z-index: 50;
}

.modal[aria-hidden="false"] {
  display: grid;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.68);
}

.modal__panel {
  position: relative;
  width: min(560px, 100%);
  max-height: calc(100dvh - 32px);
  display: flex;
  flex-direction: column;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(180deg, rgba(16, 22, 44, 0.96), rgba(16, 22, 44, 0.86));
  box-shadow: 0 36px 90px rgba(0, 0, 0, 0.60);
  padding: 14px;
  overflow: hidden;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 4px 2px 10px;
}

.modal__title {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.camera {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.13);
  background: rgba(0, 0, 0, 0.25);
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  flex: 1 1 auto;
  min-height: 220px;
}

.camera__video,
.camera__canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.camera__canvas {
  display: none;
}

.modal__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 12px;
  margin-top: 10px;
  position: sticky;
  bottom: 0;
  background: linear-gradient(180deg, rgba(20, 28, 52, 0.0), rgba(20, 28, 52, 0.55) 45%, rgba(20, 28, 52, 0.85));
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.modal__actions .btn {
  flex: 1 1 180px;
  min-width: unset;
}

.modal__actions .btn--primary {
  flex: 2 1 220px;
}

.modal__hint {
  margin-top: 4px;
}

@media (max-width: 599px) {
  .modal { padding: 10px; }
  .modal__panel { max-height: calc(100dvh - 20px); }
  .camera { aspect-ratio: 3 / 4; }
  .modal__actions { gap: 8px; padding-top: 10px; }
}

.modal__hint {
  color: rgba(255, 255, 255, 0.70);
  font-size: 13px;
  padding-top: 10px;
  line-height: 1.35;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.16);
}

.label {
  font-weight: 650;
  letter-spacing: -0.01em;
}

.file {
  display: block;
}

.file__input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.file__body {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(10, 14, 28, 0.55);
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.file__body:hover {
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(0, 0, 0, 0.22);
  transform: translateY(-1px);
}

.file__icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background:
    radial-gradient(14px 14px at 35% 30%, rgba(255, 255, 255, 0.65), transparent 60%),
    linear-gradient(135deg, rgba(51, 214, 159, 0.85), rgba(37, 211, 255, 0.55));
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 10px 22px rgba(37, 211, 255, 0.12);
  flex: 0 0 auto;
}

.file__text {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.file__title {
  font-weight: 700;
  letter-spacing: -0.01em;
}

.file__name {
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 68vw;
}

.hint {
  margin: 0;
  color: var(--faint);
  font-size: 13px;
  line-height: 1.35;
}

.preview, .result__box {
  width: 100%;
}

.preview__box, .result__box {
  position: relative;
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.13);
  background: linear-gradient(180deg, rgba(8, 10, 20, 0.70), rgba(8, 10, 20, 0.52));
  aspect-ratio: 4 / 3;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.25);
}

/* On iPad two-column, make previews a bit taller */
@media (min-width: 768px) and (max-width: 1023px) {
  .preview__box, .result__box {
    aspect-ratio: 3 / 4;
  }
}

.preview__img, .result__img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: none;
}

.preview__placeholder, .result__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  color: var(--faint);
  text-align: center;
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  padding: 12px 14px;
  border-radius: var(--radius2);
  font-weight: 720;
  letter-spacing: -0.01em;
  cursor: pointer;
  min-width: 120px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease, filter 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.22);
  border-color: rgba(255, 255, 255, 0.26);
}

.btn:focus-visible,
.topnav__link:focus-visible,
.iconBtn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--ring), 0 18px 40px rgba(0, 0, 0, 0.25);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn--primary {
  border-color: rgba(124, 92, 255, 0.55);
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.95), rgba(37, 211, 255, 0.55));
  box-shadow: 0 18px 45px rgba(124, 92, 255, 0.18), 0 18px 45px rgba(37, 211, 255, 0.12);
}

.btn--primary:hover {
  filter: saturate(1.05) brightness(1.02);
}

.btn--ghost {
  background: transparent;
}

.btn--sm {
  padding: 10px 12px;
  min-width: unset;
  border-radius: 12px;
  font-weight: 700;
  font-size: 13px;
}

.btn__spinner {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.38);
  border-top-color: rgba(255, 255, 255, 0.92);
  animation: spin 900ms linear infinite;
  display: none;
}

.btn[data-loading="true"] .btn__spinner {
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.status {
  min-height: 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.35;
}

.status--error { color: rgba(255, 77, 109, 0.92); }
.status--success { color: rgba(51, 214, 159, 0.92); }

/* Toast popup */
.toast {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  display: none;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 12px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: linear-gradient(180deg, rgba(16, 22, 44, 0.98), rgba(16, 22, 44, 0.86));
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.55);
}

.toast[aria-hidden="false"] {
  display: flex;
}

.toast__body {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.toast__title {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.toast__text {
  color: rgba(255, 255, 255, 0.80);
  line-height: 1.35;
}

.toast__close {
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
  flex: 0 0 auto;
}

@media (min-width: 768px) {
  .toast {
    left: 22px;
    right: auto;
    width: min(520px, calc(100vw - 44px));
  }
}

.card--result {
  padding-top: 12px;
}

.result__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.sectionTitle {
  margin: 0;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.result__links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.link {
  color: rgba(255, 255, 255, 0.86);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  padding-bottom: 2px;
}

.link[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}

.footer__text {
  margin: 0;
  color: var(--faint);
  font-size: 13px;
}

/* iPad portrait is 768px wide, so switch to 2-column earlier */
@media (min-width: 768px) {
  .page {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "header header"
      "topnav topnav"
      "upload result"
      "footer footer";
  }

  .header { grid-area: header; }
  .topnav { grid-area: topnav; }
  .card[data-card="upload"] { grid-area: upload; }
  .card--result { grid-area: result; }
  .footer { grid-area: footer; }
}

/* Laptop/Desktop: make left column tighter, right column bigger */
@media (min-width: 1024px) {
  .page {
    grid-template-columns: 420px minmax(0, 1fr);
    align-items: start;
  }

  .card[data-card="upload"] {
    position: sticky;
    top: 18px;
    align-self: start;
  }

  .card--result {
    padding-top: 18px;
  }

  .preview__box {
    aspect-ratio: 4 / 3;
  }

  .result__box {
    aspect-ratio: 3 / 4;
    min-height: 560px;
  }

  .result__links {
    justify-content: flex-end;
  }
}

@media (min-width: 1280px) {
  .page {
    grid-template-columns: 460px minmax(0, 1fr);
  }
  .result__box {
    min-height: 620px;
  }
}

@media (max-width: 520px) {
  .meta { display: none; }
  .file__name { max-width: 70vw; }
}

/* Gallery */
.grid {
  display: grid;
  gap: 12px;
  /* Mobile-first: 2 neat columns, no overflow */
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.tile {
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 16px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.16);
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.22);
}

.tile__imgWrap {
  aspect-ratio: 2 / 3;
  background: rgba(0, 0, 0, 0.26);
  display: grid;
  place-items: center;
}

.tile__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.tile__meta {
  padding: 12px;
  display: grid;
  gap: 10px;
}

.tile__name {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tile__actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.tile__actions .btn {
  width: 100%;
}

.qr__img {
  width: 100%;
  max-width: 260px;
}

@media (min-width: 600px) {
  .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
  .tile__actions {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 1280px) {
  .grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
  }
}

.qr {
  display: grid;
  gap: 10px;
  padding-top: 6px;
}

.qr__img {
  width: 220px;
  max-width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.92);
  padding: 10px;
}

.qr__hint {
  color: rgba(255, 255, 255, 0.70);
  font-size: 13px;
}

.empty {
  display: grid;
  place-items: center;
  gap: 10px;
  text-align: center;
  padding: 24px 10px;
}

.empty__title {
  font-weight: 780;
  letter-spacing: -0.02em;
  font-size: 18px;
}

.empty__text {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.4;
}