/* ============================================
   QR Code Generator — Warm Modernist Design
   Inspired by Japanese minimalism + Swiss typography
   NOT another AI purple-gradient-glassmorphism mess
   ============================================ */

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

/* ── Design Tokens ────────────────────────── */
:root {
  --font: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "DM Mono", "SF Mono", "Fira Code", monospace;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  --space-4xl: 6rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 250ms;
  --duration-fast: 120ms;

  --container-max: 980px;
}

/* ── Light Theme (Default) ────────────────── */
[data-theme="light"] {
  --bg: #F8F7F4;
  --bg-surface: #FFFFFF;
  --bg-hover: #F1F0ED;
  --bg-active: #E8E6E1;

  --text: #1A1917;
  --text-secondary: #6B6860;
  --text-muted: #9C9890;

  --border: #E2E0DB;
  --border-strong: #D4D2CC;

  --accent: #B45309;
  --accent-bg: #FFFBEB;
  --accent-border: #FCD34D;
  --accent-text: #92400E;

  --tab-active-bg: #1A1917;
  --tab-active-text: #FAFAF8;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 0 0 1px rgba(0,0,0,0.02);

  --qr-card-bg: #FFFFFF;

  color-scheme: light;
}

/* ── Dark Theme ───────────────────────────── */
[data-theme="dark"] {
  --bg: #161514;
  --bg-surface: #1E1D1B;
  --bg-hover: #262523;
  --bg-active: #2E2D2A;

  --text: #EDECE8;
  --text-secondary: #908D85;
  --text-muted: #5C5A54;

  --border: #2E2D2A;
  --border-strong: #3D3B37;

  --accent: #F59E0B;
  --accent-bg: rgba(245, 158, 11, 0.08);
  --accent-border: #B45309;
  --accent-text: #FCD34D;

  --tab-active-bg: #EDECE8;
  --tab-active-text: #1A1917;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.2), 0 0 0 1px rgba(255,255,255,0.03);

  --qr-card-bg: #1E1D1B;

  color-scheme: dark;
}

/* ── Base ─────────────────────────────────── */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  transition: background var(--duration) var(--ease),
    color var(--duration) var(--ease);
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

::selection {
  background: var(--accent);
  color: #fff;
}

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

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

/* ── Header ───────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  max-width: var(--container-max);
  width: 100%;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.03em;
}

.logo:hover { opacity: 0.7; }

.logo-icon {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  background: var(--tab-active-bg);
  color: var(--tab-active-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
}

.icon-btn:hover {
  border-color: var(--border-strong);
  color: var(--text);
  background: var(--bg-hover);
}

.lang-select-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.lang-select-wrapper .lang-icon {
  position: absolute;
  left: 10px;
  pointer-events: none;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease);
}

.lang-select-wrapper:hover .lang-icon {
  color: var(--text);
}

.lang-select {
  height: 36px;
  padding: 0 24px 0 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%236B6860' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

.lang-select:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

/* ── Hero ─────────────────────────────────── */
.hero {
  text-align: center;
  padding: var(--space-xl) var(--space-xl) var(--space-xs);
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
}

.hero h1 {
  font-size: clamp(1.75rem, 4.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 8px;
}

.subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* ── Mode Toggle ──────────────────────────── */
.mode-toggle {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin: 16px auto;
  padding: 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  width: max-content;
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
}

.mode-btn svg {
  width: 16px;
  height: 16px;
  opacity: 0.7;
}

.mode-btn:hover {
  color: var(--text);
  background: var(--bg-hover);
}

.mode-btn.active {
  background: var(--tab-active-bg);
  color: var(--tab-active-text);
}

.mode-btn.active svg {
  opacity: 1;
}

/* ── Workspace ────────────────────────────── */
.workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl) var(--space-xl);
  width: 100%;
  align-items: start;
}

.input-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* ── Type Tabs ────────────────────────────── */
.type-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  padding: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.type-tab {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border: none;
  border-radius: 7px;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
  white-space: nowrap;
}

.type-tab svg {
  width: 14px;
  height: 14px;
  opacity: 0.55;
  flex-shrink: 0;
}

.type-tab:hover {
  color: var(--text);
  background: var(--bg-hover);
}

.type-tab.active {
  background: var(--tab-active-bg);
  color: var(--tab-active-text);
  font-weight: 600;
}

.type-tab.active svg {
  opacity: 1;
}

/* ── Input Forms ──────────────────────────── */
.input-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.input-form {
  display: none;
  flex-direction: column;
  gap: var(--space-md);
  animation: slideIn 0.2s var(--ease);
}

.input-form.active { display: flex; }

.input-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.input-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
}

.input-field {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.92rem;
  transition: border-color var(--duration-fast) var(--ease);
  outline: none;
}

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

.input-field:hover { border-color: var(--border-strong); }

.input-field:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

textarea.input-field {
  resize: vertical;
  min-height: 90px;
  line-height: 1.5;
}

.select-field {
  width: 100%;
  padding: 12px 14px;
  padding-right: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.92rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%236B6860' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: border-color var(--duration-fast) var(--ease);
}

.select-field:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding-top: 4px;
}

.checkbox-group input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.checkbox-group label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* ── Customize Section ────────────────────── */
.customize-section {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  overflow: hidden;
}

.customize-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 13px 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease);
}

.customize-toggle:hover { color: var(--text); }

.customize-toggle .chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--duration) var(--ease);
}

.customize-toggle.open .chevron { transform: rotate(180deg); }

.customize-content {
  display: none;
  padding: 0 16px 16px;
}

.customize-content.open { display: block; }

.customize-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.customize-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.customize-group > label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.color-input-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  transition: border-color var(--duration-fast) var(--ease);
}

.color-input-wrapper:focus-within {
  border-color: var(--accent);
}

.color-input-wrapper input[type="color"] {
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  background: none;
  padding: 0;
}

.color-input-wrapper input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-input-wrapper input[type="color"]::-webkit-color-swatch {
  border: 1px solid var(--border);
  border-radius: 4px;
}

.color-text {
  width: 100%;
  border: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  outline: none;
}

.customize-select {
  width: 100%;
  padding: 8px 10px;
  padding-right: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.82rem;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  outline: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%236B6860' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  transition: border-color var(--duration-fast) var(--ease);
}

.customize-select:focus { border-color: var(--accent); }

/* ── Presets ───────────────────────────────── */
.preset-section {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.preset-section > label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.preset-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.preset-btn {
  width: 32px;
  height: 32px;
  border: 2px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
  position: relative;
  overflow: hidden;
  background: transparent;
}

.preset-btn::before,
.preset-btn::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 50%;
}

.preset-btn::before { left: 0; }
.preset-btn::after { right: 0; }

.preset-btn:hover {
  transform: scale(1.12);
  border-color: var(--text-secondary);
}

.preset-btn.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

/* Preset colors */
.preset-btn[data-preset="classic"]::before { background: #000000; }
.preset-btn[data-preset="classic"]::after  { background: #ffffff; }
.preset-btn[data-preset="ocean"]::before   { background: #0077b6; }
.preset-btn[data-preset="ocean"]::after    { background: #caf0f8; }
.preset-btn[data-preset="sunset"]::before  { background: #e63946; }
.preset-btn[data-preset="sunset"]::after   { background: #f1faee; }
.preset-btn[data-preset="forest"]::before  { background: #2d6a4f; }
.preset-btn[data-preset="forest"]::after   { background: #d8f3dc; }
.preset-btn[data-preset="royal"]::before   { background: #7b2cbf; }
.preset-btn[data-preset="royal"]::after    { background: #f3e8ff; }
.preset-btn[data-preset="midnight"]::before { background: #e2e8f0; }
.preset-btn[data-preset="midnight"]::after  { background: #1e293b; }
.preset-btn[data-preset="ember"]::before   { background: #ea580c; }
.preset-btn[data-preset="ember"]::after    { background: #fff7ed; }
.preset-btn[data-preset="monochrome"]::before { background: #374151; }
.preset-btn[data-preset="monochrome"]::after  { background: #f9fafb; }

/* ── Preview Panel ────────────────────────── */
.preview-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: sticky;
  top: var(--space-xl);
}

.qr-card {
  background: var(--qr-card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  box-shadow: var(--shadow-card);
  transition: border-color var(--duration) var(--ease);
}

.qr-card:hover {
  border-color: var(--border-strong);
}

.qr-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 250px;
  min-width: 250px;
  position: relative;
}

.qr-preview canvas,
.qr-preview svg {
  border-radius: 4px;
}

.qr-preview.generating canvas,
.qr-preview.generating svg {
  animation: qrAppear 0.35s var(--ease);
}

.qr-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  color: var(--text-muted);
}

.qr-placeholder svg {
  width: 56px;
  height: 56px;
  opacity: 0.2;
  stroke-width: 1;
}

.qr-placeholder span {
  font-size: 0.82rem;
  font-weight: 500;
}

/* ── Scan Quality ─────────────────────────── */
.scan-quality {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  max-width: 250px;
}

.quality-bar {
  flex: 1;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.quality-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 0.4s var(--ease), background-color 0.4s var(--ease);
  width: 0%;
}

.quality-fill.excellent { width: 100%; background: #16a34a; }
.quality-fill.good      { width: 66%;  background: #d97706; }
.quality-fill.poor      { width: 33%;  background: #dc2626; }

.quality-text {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  min-width: 60px;
  text-align: right;
}

.quality-text.excellent { color: #16a34a; }
.quality-text.good      { color: #d97706; }
.quality-text.poor      { color: #dc2626; }

/* ── Action Buttons ───────────────────────── */
.action-buttons {
  display: flex;
  gap: 8px;
  width: 100%;
}

.action-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 11px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
}

.action-btn svg {
  width: 15px;
  height: 15px;
}

.action-btn:hover {
  background: var(--bg-hover);
  color: var(--text);
  border-color: var(--border-strong);
}

.action-btn:active {
  background: var(--bg-active);
}

.action-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.action-btn.primary {
  background: var(--tab-active-bg);
  border-color: var(--tab-active-bg);
  color: var(--tab-active-text);
}

.action-btn.primary:hover {
  opacity: 0.85;
}

.action-btn.copied {
  background: #16a34a !important;
  border-color: #16a34a !important;
  color: #fff !important;
}

/* ── Scanner Workspace ────────────────────── */
.scan-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.qr-reader {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
  aspect-ratio: 1/1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.qr-reader video {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
}

.scan-actions {
  display: flex;
  gap: 8px;
  width: 100%;
}

.scan-result-card {
  min-height: 280px;
  display: flex;
  flex-direction: column;
  padding: var(--space-xl);
  word-break: break-all;
  justify-content: center;
  align-items: center;
}

.scan-result-card:has(.parsed-result) {
  justify-content: flex-start;
  align-items: stretch;
}

.scan-result-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.scan-result-content {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
  user-select: text;
}

/* ── Parsed Scan Result ───────────────────── */
.parsed-result {
  text-align: left;
  width: 100%;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.parsed-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-md);
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-xs);
}

.parsed-title {
  font-weight: 700;
  font-size: 0.95rem;
}

.parsed-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex-grow: 1;
}

.parsed-item {
  font-size: 0.88rem;
  color: var(--text-secondary);
  word-break: break-all;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px dashed var(--border);
  padding-bottom: 6px;
}

.parsed-item strong {
  color: var(--text);
  font-weight: 600;
}

.parsed-item span {
  text-align: right;
  max-width: 65%;
  color: var(--text-secondary);
}

.parsed-item a {
  color: var(--tab-active-bg);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.parsed-item a:hover {
  border-bottom-color: var(--tab-active-bg);
}

/* ── Footer ───────────────────────────────── */
.footer {
  margin-top: auto;
  padding: var(--space-2xl) var(--space-xl) var(--space-lg);
  max-width: var(--container-max);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--text);
}

.footer-links .dot {
  font-size: 4px;
  line-height: 1;
}

.footer-tagline {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
}

/* Ad */
.ad-container {
  margin-top: var(--space-lg);
  display: flex;
  justify-content: center;
}
.ad-container:empty { display: none; }

/* ── Toast Notifications ──────────────────── */
.toast-container {
  position: fixed;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
  pointer-events: none;
}

.toast {
  background: var(--bg-surface);
  color: var(--text);
  border: 1px solid var(--border-strong);
  padding: 12px 20px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: toastEnter 0.3s var(--ease) forwards;
}

.toast.toast-error {
  border-color: #dc2626;
  color: #dc2626;
}

.toast.toast-success {
  border-color: #16a34a;
  color: #16a34a;
}

.toast.toast-exit {
  animation: toastExit 0.3s var(--ease) forwards;
}

@keyframes toastEnter {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastExit {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to { opacity: 0; transform: translateY(20px) scale(0.95); }
}

/* ── Animations ───────────────────────────── */
@keyframes slideIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes qrAppear {
  0%   { opacity: 0; transform: scale(0.92); }
  100% { opacity: 1; transform: scale(1); }
}

/* Entry - subtle, not dramatic */
.hero        { animation: slideIn 0.4s var(--ease) 0.05s both; }
.input-panel { animation: slideIn 0.4s var(--ease) 0.1s both; }
.preview-panel { animation: slideIn 0.4s var(--ease) 0.15s both; }

/* ── Responsive ───────────────────────────── */
@media (max-width: 860px) {
  .workspace {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .preview-panel {
    position: static;
    order: -1;
  }

  .qr-card { padding: var(--space-xl); }
  .qr-preview { min-height: 200px; min-width: 200px; }
}

@media (max-width: 600px) {
  .header { padding: var(--space-md); }

  .hero {
    padding: var(--space-2xl) var(--space-md) var(--space-xl);
  }

  .workspace { padding: 0 var(--space-md) var(--space-2xl); }

  .type-tab svg { display: none; }

  .input-row { grid-template-columns: 1fr; }
  .customize-grid { grid-template-columns: 1fr; }

  .action-buttons { flex-wrap: wrap; }
  .action-btn { padding: 10px 14px; }

  .qr-card { padding: var(--space-lg); }

  .parsed-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .parsed-item span {
    text-align: left;
    max-width: 100%;
  }
}

/* ── Print ────────────────────────────────── */
@media print {
  .header, .input-panel, .action-buttons,
  .scan-quality, .footer, .ad-container { display: none !important; }
  body { background: white !important; }
  .qr-card { box-shadow: none !important; border: none !important; }
}

/* ── Utility ──────────────────────────────── */
.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}