@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

:root {
  --bg:          #0a0a0b;
  --surface:     #111113;
  --surface-2:   #18181b;
  --border:      #1f1f22;
  --border-hover:#2e2e32;
  --accent:      #5e6ad2;
  --accent-dim:  rgba(94, 106, 210, 0.12);
  --accent-glow: rgba(94, 106, 210, 0.25);
  --text:        #e4e4e7;
  --text-2:      #a1a1aa;
  --text-3:      #52525b;
  --danger:      #f87171;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { height: 100%; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 13px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ── Top Bar ─────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 24px;
  height: 48px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  background: var(--surface);
}

.topbar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  letter-spacing: -0.02em;
}

.topbar-logo svg {
  color: var(--accent);
}

.topbar-sep {
  width: 1px;
  height: 16px;
  background: var(--border);
}

.topbar-label {
  font-size: 13px;
  color: var(--text-2);
}

.topbar-spacer { flex: 1; }

.topbar-badge {
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid rgba(94, 106, 210, 0.2);
}

/* ── Layout ──────────────────────────────────────────── */
.workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/* ── Sidebar ─────────────────────────────────────────── */
.sidebar {
  width: 280px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.sidebar-section {
  padding: 16px 16px 0;
}

.sidebar-section + .sidebar-section {
  margin-top: 4px;
}

.section-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0 4px;
  margin-bottom: 6px;
}

/* Mode toggle */
.mode-toggle {
  display: flex;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px;
  gap: 2px;
  margin-bottom: 12px;
}

.mode-btn {
  flex: 1;
  padding: 6px 0;
  border: none;
  background: transparent;
  color: var(--text-2);
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.15s, color 0.15s;
}

.mode-btn.active {
  background: var(--surface-2);
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

/* Fields */
.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 10px;
}

.field label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
}

.field input[type="text"],
.field input[type="url"],
.field input[type="tel"],
.field input[type="email"],
.field select {
  width: 100%;
  padding: 7px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
  -webkit-appearance: none;
}

.field input:focus,
.field select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.field input::placeholder { color: var(--text-3); }

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2352525b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
  cursor: pointer;
}

.field select option {
  background: var(--surface-2);
  color: var(--text);
}

/* ── Color Pickers ────────────────────────────────────── */
.color-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.color-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.color-field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.color-field-header label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
}

/* Transparent toggle pill */
.transp-toggle {
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  font-size: 11px;
  color: var(--text-3);
  user-select: none;
  transition: color 0.15s;
}
.transp-toggle:hover { color: var(--text-2); }

.transp-toggle input[type="checkbox"] { display: none; }

.toggle-pill {
  width: 28px;
  height: 15px;
  border-radius: 99px;
  background: var(--border);
  position: relative;
  transition: background 0.2s;
  flex-shrink: 0;
}
.toggle-pill::after {
  content: '';
  position: absolute;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--text-3);
  top: 2px;
  left: 2px;
  transition: transform 0.2s, background 0.2s;
}
.transp-toggle input:checked + .toggle-pill {
  background: var(--accent-dim);
  border: 1px solid var(--accent);
}
.transp-toggle input:checked + .toggle-pill::after {
  transform: translateX(13px);
  background: var(--accent);
}

/* Color picker row: swatch + hex input */
.color-picker-wrap {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.color-picker-wrap:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}
.color-picker-wrap.disabled {
  opacity: 0.35;
  pointer-events: none;
}

/* Swatch button */
.color-swatch {
  width: 36px;
  height: 34px;
  flex-shrink: 0;
  border: none;
  border-right: 1px solid var(--border);
  cursor: pointer;
  padding: 0;
  position: relative;
  overflow: hidden;
}
.color-swatch input[type="color"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  border: none;
  padding: 0;
}
.swatch-preview {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
/* Checkered pattern for transparent swatch preview */
.color-swatch.transparent-active .swatch-preview {
  background-image:
    linear-gradient(45deg, #555 25%, transparent 25%),
    linear-gradient(-45deg, #555 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #555 75%),
    linear-gradient(-45deg, transparent 75%, #555 75%);
  background-size: 8px 8px;
  background-position: 0 0, 0 4px, 4px -4px, -4px 0px;
  background-color: #222;
}

/* Hex text input */
.color-hex-input {
  flex: 1;
  padding: 0 10px;
  height: 34px;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: 'SF Mono', 'Fira Code', ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  min-width: 0;
}
.color-hex-input::placeholder { color: var(--text-3); }
.color-hex-input:disabled { color: var(--text-3); }

/* Logo upload */
.logo-drop {
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 14px 12px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  color: var(--text-3);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.logo-drop:hover {
  border-color: var(--border-hover);
  background: var(--surface-2);
  color: var(--text-2);
}

.logo-preview-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.logo-preview-row img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  border-radius: 3px;
}

.logo-preview-row span {
  flex: 1;
  font-size: 11px;
  color: var(--text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-remove {
  border: none;
  background: none;
  color: var(--text-3);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 3px;
  font-size: 11px;
  transition: color 0.15s;
}
.btn-remove:hover { color: var(--danger); }

/* Divider */
.divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

/* Generate button */
.btn-generate {
  width: calc(100% - 32px);
  margin: 0 16px 16px;
  padding: 9px 0;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.15s, box-shadow 0.15s;
  letter-spacing: -0.01em;
}

.btn-generate:hover {
  opacity: 0.9;
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ── Preview Panel ───────────────────────────────────── */
.preview-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  background: var(--bg);
  padding: 40px;
  position: relative;
}

.preview-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  pointer-events: none;
}

.qr-frame {
  position: relative;
  z-index: 1;
  border-radius: 14px;
  padding: 16px;
  /* White BG default; toggled via JS when transparent */
  background: #fff;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.06),
    0 24px 64px rgba(0,0,0,0.6);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

/* Checkered pattern shown when transparent BG is active */
.qr-frame.transparent-bg {
  background-image:
    linear-gradient(45deg, #3a3a3a 25%, transparent 25%),
    linear-gradient(-45deg, #3a3a3a 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #3a3a3a 75%),
    linear-gradient(-45deg, transparent 75%, #3a3a3a 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
  background-color: #252525;
}

.qr-frame:hover {
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.08),
    0 32px 80px rgba(0,0,0,0.7),
    0 0 40px var(--accent-glow);
}

#qrcode {
  display: block;
  line-height: 0;
}

/* Intern 560×560 gerendert, aber auf 280×280 skaliert → scharf auf HiDPI */
#qrcode canvas,
#qrcode svg {
  width:  280px !important;
  height: 280px !important;
  display: block;
}

/* Download actions */
.download-actions {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 8px;
}

.btn-dl {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-2);
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.btn-dl:hover {
  color: var(--text);
  border-color: var(--border-hover);
  background: var(--surface-2);
}

.btn-dl svg { flex-shrink: 0; }

/* Status hint */
.preview-hint {
  position: relative;
  z-index: 1;
  font-size: 11px;
  color: var(--text-3);
}

/* ── Tracking Status ─────────────────────────────────── */
.tracking-status {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 12px;
  line-height: 1.4;
  margin-bottom: 4px;
}
.tracking-status.success {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #6ee7b7;
}
.tracking-status.error {
  background: rgba(248, 113, 113, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.25);
  color: #fca5a5;
}
.tracking-status .status-label {
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.7;
}
.tracking-url {
  font-family: 'SF Mono', 'Fira Code', ui-monospace, monospace;
  font-size: 10px;
  word-break: break-all;
  opacity: 0.8;
}

/* Generate button loading state */
.btn-generate.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* ── Utils ───────────────────────────────────────────── */
.hidden { display: none !important; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 680px) {
  .workspace { flex-direction: column; overflow: auto; }
  .sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
  .preview-panel { min-height: 420px; }
}