:root {
  --bg: #f3f4fb;
  --surface: #ffffff;
  --surface-alt: #f7f8fd;
  --text: #14162b;
  --text-muted: #676c85;
  --border: #e7e8f3;
  --border-soft: #eef0f8;
  --accent-1: #6366f1;
  --accent-2: #ec4899;
  --accent-gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  --accent-solid: #6366f1;
  --accent-solid-hover: #4f46e5;
  --danger: #e0245e;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(20, 22, 43, 0.05);
  --shadow-md: 0 8px 24px rgba(20, 22, 43, 0.08);
  --shadow-lg: 0 16px 48px rgba(20, 22, 43, 0.12);
  --blob-1: rgba(99, 102, 241, 0.16);
  --blob-2: rgba(236, 72, 153, 0.14);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e0f1a;
    --surface: #171928;
    --surface-alt: #1d1f31;
    --text: #eef0fb;
    --text-muted: #9296b3;
    --border: #2a2d42;
    --border-soft: #262940;
    --accent-1: #818cf8;
    --accent-2: #f472b6;
    --accent-solid: #818cf8;
    --accent-solid-hover: #a5b0fb;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
    --blob-1: rgba(129, 140, 248, 0.18);
    --blob-2: rgba(244, 114, 182, 0.16);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0e0f1a;
  --surface: #171928;
  --surface-alt: #1d1f31;
  --text: #eef0fb;
  --text-muted: #9296b3;
  --border: #2a2d42;
  --border-soft: #262940;
  --accent-1: #818cf8;
  --accent-2: #f472b6;
  --accent-solid: #818cf8;
  --accent-solid-hover: #a5b0fb;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
  --blob-1: rgba(129, 140, 248, 0.18);
  --blob-2: rgba(244, 114, 182, 0.16);
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background-color 0.25s ease, color 0.25s ease;
}

.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.bg-decor::before,
.bg-decor::after {
  content: "";
  position: absolute;
  width: 46vw;
  height: 46vw;
  max-width: 620px;
  max-height: 620px;
  border-radius: 50%;
  filter: blur(90px);
}

.bg-decor::before {
  top: -12vw;
  left: -10vw;
  background: var(--blob-1);
}

.bg-decor::after {
  bottom: -14vw;
  right: -12vw;
  background: var(--blob-2);
}

.topbar {
  padding: 28px 24px 18px;
  text-align: center;
}

.topbar-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: "Plus Jakarta Sans", "Inter", sans-serif;
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-icon {
  display: inline-flex;
  color: var(--accent-solid);
}

.brand-icon svg rect {
  fill: currentColor;
}

.brand-name {
  margin: 0;
  font: inherit;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.topbar-actions {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
}

@media (max-width: 560px) {
  .topbar-inner {
    flex-direction: column;
    gap: 14px;
  }
  .brand { font-size: 1.3rem; }
  .topbar-actions {
    position: static;
    transform: none;
  }
}

.auth-area {
  display: flex;
  align-items: center;
  gap: 8px;
}

.auth-user {
  font-size: 0.82rem;
  color: var(--text-muted);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-auth {
  padding: 9px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.btn-auth:hover {
  border-color: var(--accent-solid);
  color: var(--accent-solid);
  transform: translateY(-1px);
}

.btn-auth.primary {
  background: var(--accent-gradient);
  border-color: transparent;
  color: #fff;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, color 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover {
  color: var(--accent-solid);
  border-color: var(--accent-solid);
  transform: scale(1.06);
}

.theme-toggle svg { fill: none; stroke: currentColor; }
.theme-toggle .icon-sun circle { fill: currentColor; stroke: none; }
.theme-toggle .icon-moon path { fill: currentColor; stroke: none; }

.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}

.tagline {
  margin: 14px 0 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 20px 60px;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

@media (max-width: 860px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
}

.panel, .preview-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-md);
  padding: 22px;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.mode-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  background: var(--surface-alt);
  padding: 4px;
  border-radius: 12px;
}

.mode-btn {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 9px;
  background: transparent;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.mode-btn.active {
  background: var(--surface);
  color: var(--accent-solid);
  box-shadow: var(--shadow-sm);
}

.type-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.type-btn {
  padding: 7px 13px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.type-btn:hover {
  border-color: var(--accent-solid);
  color: var(--accent-solid);
}

.type-btn.active {
  background: var(--accent-gradient);
  border-color: transparent;
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.mode-panel { display: none; }
.mode-panel.active { display: block; animation: fade-in 0.25s ease; }

@keyframes fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.field-group { margin-bottom: 14px; }
.field-group.hidden { display: none; }

label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 5px;
  margin-top: 10px;
}

label:first-child { margin-top: 0; }

.checkbox-label {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-weight: 500;
  color: var(--text);
}
.checkbox-label input { width: auto; accent-color: var(--accent-solid); }

input[type="text"],
input[type="url"],
input[type="email"],
input[type="password"],
input[type="file"],
textarea,
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="text"]:focus,
input[type="url"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent-solid);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-solid) 20%, transparent);
}

textarea { resize: vertical; }

.hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 4px 0 0;
}

.customize {
  border-top: 1px solid var(--border-soft);
  padding-top: 18px;
  margin-top: 8px;
}

.customize h3 {
  margin: 0 0 12px;
  font-size: 0.95rem;
  font-family: "Plus Jakarta Sans", sans-serif;
  font-weight: 700;
}

.preset-row {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.preset-swatch {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--border);
  cursor: pointer;
  padding: 0;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.preset-swatch:hover {
  transform: scale(1.12);
  border-color: var(--accent-solid);
}

.preset-swatch.active {
  border-color: var(--accent-solid);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-solid) 25%, transparent);
  transform: scale(1.08);
}

.customize-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 14px;
}

.control.span-2 { grid-column: 1 / -1; }

input[type="color"] {
  width: 100%;
  height: 38px;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--surface);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent-solid);
}

.range-val {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.mini-btn {
  margin-top: 8px;
  padding: 6px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.mini-btn:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.logo-upload-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-upload-controls {
  flex: 1;
  min-width: 0;
}

.logo-preview {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.preview {
  position: sticky;
  top: 20px;
}

.preview-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.preview-surface {
  width: 100%;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(45deg, var(--surface-alt) 25%, transparent 25%),
    linear-gradient(-45deg, var(--surface-alt) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--surface-alt) 75%),
    linear-gradient(-45deg, transparent 75%, var(--surface-alt) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  border-radius: var(--radius);
  border: 1px solid var(--border-soft);
  padding: 20px;
}

#qr-canvas-container, #barcode-svg { max-width: 100%; }
#qr-canvas-container canvas, #barcode-svg { max-width: 100%; height: auto; }
#qr-canvas-container canvas, #barcode-svg { border-radius: 6px; }
.hidden { display: none !important; }

.error-msg {
  color: var(--danger);
  font-size: 0.85rem;
  min-height: 1em;
  margin: 0;
  text-align: center;
}

.download-row {
  display: flex;
  gap: 10px;
  width: 100%;
}

.btn {
  flex: 1;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

.btn:hover {
  border-color: var(--accent-solid);
  transform: translateY(-1px);
}

.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--accent-gradient);
  border-color: transparent;
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.btn-generate {
  width: 100%;
  margin-top: 22px;
  padding: 14px;
  font-size: 1rem;
}

.btn-generate-top {
  margin-top: 6px;
  margin-bottom: 22px;
}

.footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 24px 20px 40px;
}

.footer a {
  color: var(--text-muted);
  text-decoration: underline;
}

.footer a:hover {
  color: var(--accent-solid);
}

/* ---------- Auth gating: lock badges + locked controls ---------- */

.label-with-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.lock-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent-solid);
  background: color-mix(in srgb, var(--accent-solid) 12%, transparent);
  border-radius: 20px;
  padding: 2px 8px;
  text-transform: uppercase;
}

.lock-badge.hidden { display: none; }

.preset-row.is-locked {
  opacity: 0.55;
  filter: grayscale(0.3);
}

.preset-row.is-locked .preset-swatch {
  cursor: pointer;
}

.preset-row.is-locked .preset-swatch:hover {
  transform: none;
  border-color: var(--border);
}

/* ---------- Auth modal ---------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 11, 20, 0.55);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}

.modal-backdrop.hidden { display: none; }

.modal {
  position: relative;
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-lg);
  padding: 28px 26px 24px;
  animation: modal-pop 0.2s ease;
}

@keyframes modal-pop {
  from { opacity: 0; transform: scale(0.96) translateY(6px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 30px;
  height: 30px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  border-radius: 50%;
}

.modal-close:hover {
  background: var(--surface-alt);
  color: var(--text);
}

.modal-tabs {
  display: flex;
  gap: 8px;
  background: var(--surface-alt);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 18px;
}

.modal-tab {
  flex: 1;
  padding: 9px;
  border: none;
  border-radius: 9px;
  background: transparent;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-tab.active {
  background: var(--surface);
  color: var(--accent-solid);
  box-shadow: var(--shadow-sm);
}

.modal-title {
  font-family: "Plus Jakarta Sans", sans-serif;
  font-size: 1.25rem;
  margin: 0 0 6px;
}

.modal-subtitle {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin: 0 0 18px;
  line-height: 1.4;
}

.modal-error {
  color: var(--danger);
  font-size: 0.82rem;
  margin: 4px 0 0;
  min-height: 1em;
}

.modal-note {
  color: var(--accent-solid);
  font-size: 0.82rem;
  margin: 8px 0 0;
  min-height: 1em;
  line-height: 1.4;
}

.modal-submit {
  width: 100%;
  margin-top: 16px;
}

.modal-small {
  max-width: 340px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.btn-danger {
  background: var(--danger);
  border-color: transparent;
  color: #fff;
}

.btn-danger:hover {
  border-color: transparent;
  filter: brightness(1.08);
}

.btn-google {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-google:hover {
  border-color: var(--accent-solid);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.btn-google:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.modal-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.78rem;
  margin: 16px 0;
}

.modal-divider::before,
.modal-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ---------- Ad slots ---------- */

.ad-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-alt);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  overflow: hidden;
}

.ad-slot-banner {
  max-width: 1080px;
  margin: 16px auto 0;
  min-height: 90px;
}

.ad-slot-rectangle {
  width: 100%;
  min-height: 250px;
  margin-top: 18px;
}

@media (max-width: 860px) {
  .ad-slot-banner { margin: 16px 20px 0; min-height: 60px; }
}

/* ---------- Cookie / ad consent banner ---------- */

.consent-banner {
  position: fixed;
  left: 20px;
  right: 20px;
  bottom: 20px;
  max-width: 560px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 18px 20px;
  z-index: 90;
  animation: modal-pop 0.25s ease;
}

.consent-banner p {
  margin: 0 0 14px;
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.5;
}

.consent-banner a {
  color: var(--accent-solid);
}

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

.consent-actions .btn {
  flex: 1;
  padding: 10px;
  font-size: 0.85rem;
}