/* ═══════════════════════════════════════════════════════
   gencod · QR code generator
   Design system zhodný s preklad.netlify.app
   ═══════════════════════════════════════════════════════ */

:root {
  --bg: #0a0f14;
  --bg2: #11171f;
  --glass: rgba(255,255,255,0.025);
  --glass-hover: rgba(0,212,232,0.05);
  --border: rgba(255,255,255,0.06);
  --border-strong: rgba(255,255,255,0.12);
  --gold: #00d4e8;
  --gold-dim: rgba(0,212,232,0.13);
  --yellow: #ffc629;
  --yellow-dim: rgba(255,198,41,0.12);
  --text: #f5f7fa;
  --text-2: #8b95a3;
  --text-3: #4a5260;
  --green: #00e676;
  --green-dim: rgba(0,230,118,0.13);
  --red-dim: rgba(255,82,82,0.16);
  --red: #ff6b6b;
  --orange: #ff9542;
  --orange-dim: rgba(255,149,66,0.13);
  --radius: 8px;
  --radius-sm: 4px;
}

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

html, body {
  height: 100%;
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Grid backdrop subtly visible */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,232,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,232,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.ambient {
  position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden;
}
.ambient::before {
  content: ''; position: absolute;
  width: 700px; height: 700px; top: -200px; right: -150px;
  background: radial-gradient(circle, rgba(0,212,232,0.05) 0%, transparent 70%);
  border-radius: 50%; animation: drift1 20s ease-in-out infinite alternate;
}
.ambient::after {
  content: ''; position: absolute;
  width: 500px; height: 500px; bottom: -100px; left: 10%;
  background: radial-gradient(circle, rgba(255,198,41,0.03) 0%, transparent 70%);
  border-radius: 50%; animation: drift2 25s ease-in-out infinite alternate;
}
@keyframes drift1 { from { transform: translate(0,0); } to { transform: translate(-60px, 80px); } }
@keyframes drift2 { from { transform: translate(0,0); } to { transform: translate(40px, -60px); } }

/* ═══════════════════════════════════════════════════════
   Language selection screen
   ═══════════════════════════════════════════════════════ */
#lang-screen {
  position: fixed; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  z-index: 100; background: var(--bg);
  transition: opacity 0.6s ease, transform 0.6s ease; gap: 3rem;
}
#lang-screen.leaving { opacity: 0; transform: scale(1.03); pointer-events: none; }

.lang-header { text-align: center; animation: fadeUp 0.8s ease both; }

.lang-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem; color: var(--gold);
  letter-spacing: 0.28em; text-transform: uppercase; font-weight: 500;
  margin-bottom: 1rem;
  display: flex; align-items: center; justify-content: center; gap: 0.6rem;
}
.lang-tag::before, .lang-tag::after {
  content: ''; height: 1px; width: 40px;
  background: linear-gradient(90deg, transparent, var(--gold));
}
.lang-tag::after { background: linear-gradient(90deg, var(--gold), transparent); }

.lang-logo {
  font-family: 'Inter', sans-serif;
  font-size: 3.6rem; font-weight: 700; letter-spacing: -0.03em; line-height: 1;
  margin-bottom: 0.85rem;
  color: var(--yellow);
}

.lang-tagline {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem; color: var(--text-3);
  letter-spacing: 0.18em; text-transform: uppercase; font-weight: 400;
}

.lang-cards { display: flex; gap: 1.25rem; animation: fadeUp 0.8s 0.15s ease both; }
.lang-card {
  width: 180px; padding: 2.25rem 1.5rem;
  background: var(--glass); border: 1px solid var(--border);
  border-radius: var(--radius); cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 0.9rem;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative; overflow: hidden; user-select: none;
}
.lang-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,212,232,0.08) 0%, transparent 60%);
  opacity: 0; transition: opacity 0.3s;
}
.lang-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold); background: var(--glass-hover);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 30px rgba(0,212,232,0.15);
}
.lang-card:hover::before { opacity: 1; }
.lang-card:active { transform: translateY(-3px) scale(0.99); }
.lang-flag { font-size: 2.8rem; line-height: 1; filter: drop-shadow(0 4px 12px rgba(0,0,0,0.5)); }
.lang-name {
  font-family: 'Inter', sans-serif;
  font-size: 1.05rem; font-weight: 600;
  letter-spacing: 0.01em;
}
.lang-native {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.66rem; color: var(--text-3);
  letter-spacing: 0.15em; text-transform: uppercase;
}

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

/* ═══════════════════════════════════════════════════════
   Main app shell
   ═══════════════════════════════════════════════════════ */
#app {
  position: fixed; inset: 0; display: none; flex-direction: column;
  opacity: 0; transition: opacity 0.5s ease; z-index: 1;
}
#app.visible { display: flex; opacity: 1; }

.app-header {
  height: 52px; display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.5rem; border-bottom: 1px solid var(--border);
  background: rgba(10,15,20,0.85); backdrop-filter: blur(20px);
  flex-shrink: 0; position: relative; z-index: 10;
}
.app-logo {
  font-family: 'Inter', sans-serif; font-size: 1.05rem;
  font-weight: 700; letter-spacing: 0.01em;
  display: flex; align-items: center; gap: 0.7rem;
}
.app-logo::before {
  content: '◆';
  color: var(--gold);
  font-size: 0.85rem;
}
.app-logo em { font-style: normal; color: var(--yellow); }

.lang-switch-btn {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.35rem 0.8rem;
  background: var(--glass); border: 1px solid var(--border); border-radius: 99px;
  font-family: 'Inter', sans-serif; font-size: 0.78rem; color: var(--text-2);
  cursor: pointer; transition: all 0.2s;
}
.lang-switch-btn:hover { border-color: var(--border-strong); color: var(--text); background: var(--glass-hover); }

.app-content {
  flex: 1; display: grid; grid-template-columns: 300px 1fr 300px;
  overflow: hidden; position: relative; z-index: 1;
}

/* ═══════════════════════════════════════════════════════
   Side panels (left & right)
   ═══════════════════════════════════════════════════════ */
.side-panel {
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  background: rgba(11,16,22,0.65); backdrop-filter: blur(10px);
  overflow: hidden;
}

.right-panel {
  border-left: 1px solid var(--border);
  display: flex; flex-direction: column;
  background: rgba(11,16,22,0.65); backdrop-filter: blur(10px);
  overflow: hidden;
}

.panel-header {
  padding: 0.95rem 1.25rem 0.7rem;
  display: flex; align-items: center; justify-content: space-between;
  flex-shrink: 0;
}
.panel-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--gold);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.panel-count {
  font-size: 0.65rem;
  color: var(--text-3);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.05em;
}

/* ═══ History section (30% of left panel) ═══ */
.history-section {
  flex: 0 1 30%;
  display: flex; flex-direction: column;
  min-height: 0;
  border-bottom: 1px solid var(--border);
}

.history-list {
  flex: 1; overflow-y: auto;
  padding: 0 0.6rem 0.5rem;
  display: flex; flex-direction: column; gap: 0.3rem;
  min-height: 0;
}
.history-list::-webkit-scrollbar { width: 4px; }
.history-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.history-empty {
  padding: 1.2rem 0.7rem;
  font-size: 0.72rem;
  color: var(--text-3);
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  line-height: 1.7;
  white-space: pre-line;
}

.history-item {
  display: flex; align-items: center; gap: 0.55rem;
  padding: 0.5rem 0.65rem;
  background: var(--glass); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer; transition: all 0.15s;
  position: relative;
  min-width: 0;
}
.history-item:hover {
  border-color: var(--border-strong);
  background: var(--glass-hover);
}
.history-item-icon {
  font-size: 0.95rem;
  flex-shrink: 0;
  width: 1.2rem;
  text-align: center;
  opacity: 0.85;
}
.history-item-body {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 0.15rem;
}
.history-item-text {
  font-size: 0.75rem;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.history-item-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  color: var(--text-3);
  letter-spacing: 0.04em;
}
.history-item-delete {
  background: none; border: none;
  color: var(--text-3); cursor: pointer;
  font-size: 0.95rem;
  padding: 0.15rem 0.3rem;
  transition: color 0.15s;
  flex-shrink: 0;
  opacity: 0;
}
.history-item:hover .history-item-delete { opacity: 1; }
.history-item-delete:hover { color: var(--red); }

.history-footer { padding: 0.6rem 1.25rem 0.85rem; flex-shrink: 0; }

.history-clear-btn {
  width: 100%; padding: 0.55rem;
  background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-2);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  cursor: pointer; transition: all 0.2s;
}
.history-clear-btn:hover { border-color: var(--red); color: var(--red); background: var(--red-dim); }
.history-clear-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.history-clear-btn:disabled:hover { border-color: var(--border); color: var(--text-2); background: var(--glass); }

/* ═══ Donations section (70% of left panel) ═══ */
.donations-section {
  flex: 1 1 70%;
  padding: 1rem 1.25rem 1.25rem;
  overflow-y: auto;
  min-height: 0;
  display: flex; flex-direction: column; gap: 0.65rem;
}
.donations-section::-webkit-scrollbar { width: 4px; }
.donations-section::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.donation-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--gold);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: flex; align-items: center; gap: 0.4rem;
}
.donation-title::before { content: '◆'; color: var(--gold); font-size: 0.7rem; }

.donation-text {
  font-size: 0.72rem;
  color: var(--text-2);
  line-height: 1.55;
}

.donation-instruction {
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
  margin-top: -0.2rem;
}

.qr-tabs {
  display: flex;
  gap: 0.3rem;
  align-self: center;
  margin-top: 0.15rem;
}
.qr-tab {
  padding: 0.32rem 0.65rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.18s;
}
.qr-tab.active {
  background: var(--gold-dim);
  border-color: var(--gold);
  color: var(--gold);
}
.qr-tab:hover:not(.active) {
  color: var(--text);
  border-color: var(--border-strong);
}

.qr-wrap {
  background: white;
  padding: 8px;
  border-radius: var(--radius-sm);
  align-self: center;
  line-height: 0;
  position: relative;
  width: 146px;
  height: 146px;
}
.qr-wrap canvas, .qr-wrap img, .qr-wrap .donate-qr-target {
  display: block;
  width: 130px; height: 130px;
  object-fit: contain;
}
.qr-wrap .donate-qr-target canvas,
.qr-wrap .donate-qr-target svg {
  width: 130px !important;
  height: 130px !important;
}
.qr-wrap img { background: white; }

.qr-hint {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.64rem;
  color: var(--text-3);
  text-align: center;
  letter-spacing: 0.05em;
  margin-top: -0.15rem;
}

.iban-row {
  display: flex; align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.7rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.iban-display {
  flex: 1;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: -0.01em;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.iban-copy-btn {
  background: none; border: none;
  color: var(--text-3); cursor: pointer;
  font-size: 0.9rem;
  padding: 0.15rem 0.3rem;
  transition: color 0.15s;
  flex-shrink: 0;
}
.iban-copy-btn:hover { color: var(--gold); }
.iban-copy-btn.copied { color: var(--green); }

/* ═══════════════════════════════════════════════════════
   Right panel - tools/links
   ═══════════════════════════════════════════════════════ */
.right-panel-list {
  padding: 0.25rem 1rem;
  display: flex; flex-direction: column; gap: 0.6rem;
}

.tool-link {
  display: block;
  padding: 0.85rem 1rem;
  background: var(--glass); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration: none;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}
.tool-link::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--gold-dim) 0%, transparent 60%);
  opacity: 0; transition: opacity 0.25s;
  pointer-events: none;
}
.tool-link:hover {
  border-color: rgba(0,212,232,0.4);
  transform: translateY(-1px);
}
.tool-link:hover::before { opacity: 1; }

.tool-link-name {
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.005em;
  margin-bottom: 0.18rem;
  display: flex; align-items: center; gap: 0.4rem;
}
.tool-link-name .arrow {
  margin-left: auto;
  color: var(--text-3);
  font-size: 0.75rem;
  transition: color 0.2s, transform 0.2s;
}
.tool-link:hover .tool-link-name .arrow {
  color: var(--gold);
  transform: translate(2px, -2px);
}
.tool-link-url {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.66rem;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

/* ═══════════════════════════════════════════════════════
   Generator panel (middle)
   ═══════════════════════════════════════════════════════ */
.gen-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  padding: 1.5rem;
  overflow-y: auto;
}
.gen-panel::-webkit-scrollbar { width: 4px; }
.gen-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.gen-col {
  display: flex; flex-direction: column; gap: 1rem;
  min-width: 0;
}

/* Field labels */
.field-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.66rem;
  color: var(--text-2);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 0.4rem;
  display: block;
}

.section-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--gold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  display: flex; align-items: center; gap: 0.5rem;
  margin-bottom: 0.1rem;
}
.section-title::before {
  content: ''; flex: 0 0 14px; height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

/* Select */
.select-wrap { position: relative; }
.select {
  width: 100%; padding: 0.65rem 2rem 0.65rem 0.9rem;
  background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); font-family: 'Inter', sans-serif; font-size: 0.85rem;
  appearance: none; cursor: pointer; transition: border-color 0.2s;
}
.select:focus { outline: none; border-color: var(--gold); }
.select option { background: var(--bg2); color: var(--text); padding: 0.4rem; }
.select-wrap::after {
  content: '▾'; position: absolute; right: 0.75rem; top: 50%;
  transform: translateY(-50%); pointer-events: none; font-size: 0.7rem; color: var(--text-3);
}

/* Text inputs */
.text-input, .textarea {
  width: 100%;
  padding: 0.65rem 0.9rem;
  background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  transition: border-color 0.2s, background 0.2s;
  outline: none;
}
.text-input:focus, .textarea:focus {
  border-color: var(--gold);
  background: rgba(0,212,232,0.03);
}
.text-input::placeholder, .textarea::placeholder { color: var(--text-3); }

.textarea {
  resize: vertical;
  min-height: 70px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  line-height: 1.55;
}

/* Checkbox row */
.check-row {
  display: flex; align-items: center; gap: 0.55rem;
  font-size: 0.82rem;
  cursor: pointer;
  user-select: none;
  color: var(--text-2);
}
.check-row input[type="checkbox"] {
  appearance: none;
  width: 16px; height: 16px;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  background: var(--glass);
  cursor: pointer;
  position: relative;
  transition: all 0.15s;
  flex-shrink: 0;
}
.check-row input[type="checkbox"]:checked {
  background: var(--gold-dim);
  border-color: var(--gold);
}
.check-row input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 700;
}

/* Sensitive warning */
.sensitive-warning {
  display: flex; align-items: flex-start; gap: 0.55rem;
  padding: 0.6rem 0.8rem;
  background: var(--orange-dim);
  border: 1px solid rgba(255,149,66,0.25);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--orange);
  line-height: 1.5;
  animation: fadeUp 0.25s ease;
}
.sensitive-warning::before {
  content: 'ⓘ';
  flex-shrink: 0;
  font-size: 0.9rem;
  margin-top: -0.05rem;
}

/* Field group for multi-field types */
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}
.field-grid > .field-full { grid-column: 1 / -1; }

/* Slider */
.slider-row {
  display: flex; align-items: center; gap: 0.8rem;
}
.slider {
  flex: 1;
  -webkit-appearance: none; appearance: none;
  height: 2px;
  background: var(--border-strong);
  border-radius: 1px;
  outline: none;
  cursor: pointer;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 14px; height: 14px;
  background: var(--gold);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(0,212,232,0.4);
  transition: transform 0.15s;
}
.slider::-webkit-slider-thumb:hover { transform: scale(1.15); }
.slider::-moz-range-thumb {
  width: 14px; height: 14px;
  background: var(--gold);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 0 8px rgba(0,212,232,0.4);
}
.slider-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--text);
  letter-spacing: 0.05em;
  min-width: 60px;
  text-align: right;
}

/* Color picker */
.color-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}
.color-field {
  display: flex; align-items: center; gap: 0.55rem;
  padding: 0.45rem 0.6rem;
  background: var(--glass); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s;
}
.color-field:hover { border-color: var(--border-strong); }
.color-field input[type="color"] {
  -webkit-appearance: none; appearance: none;
  width: 28px; height: 28px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.color-field input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-field input[type="color"]::-webkit-color-swatch { border: none; border-radius: 3px; }
.color-field input[type="color"]::-moz-color-swatch { border: none; border-radius: 3px; }
.color-field-label {
  font-size: 0.72rem;
  color: var(--text-2);
  line-height: 1.3;
}
.color-field-hex {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-3);
  letter-spacing: 0.02em;
  margin-top: 0.05rem;
}

/* ECC select inline */
.ecc-row {
  display: flex; align-items: center; gap: 0.7rem;
}
.ecc-row .select-wrap { flex: 0 0 90px; }
.ecc-hint {
  flex: 1;
  font-size: 0.7rem;
  color: var(--text-3);
  line-height: 1.45;
}

/* Logo upload */
.logo-zone {
  border: 1.5px dashed var(--border-strong); border-radius: var(--radius-sm);
  padding: 1rem; text-align: center;
  background: var(--glass);
  cursor: pointer; transition: all 0.2s;
  position: relative; overflow: hidden;
}
.logo-zone:hover {
  border-color: rgba(0,212,232,0.4);
  background: var(--gold-dim);
}
.logo-zone-empty {
  font-size: 0.78rem;
  color: var(--text-2);
}
.logo-zone-empty::before {
  content: '+';
  font-size: 1.2rem;
  margin-right: 0.4rem;
  color: var(--gold);
  font-weight: 300;
}

.logo-preview {
  display: flex; align-items: center; gap: 0.7rem;
  text-align: left;
}
.logo-preview img {
  width: 36px; height: 36px;
  object-fit: contain;
  background: white;
  border-radius: 4px;
  padding: 3px;
  flex-shrink: 0;
}
.logo-preview-name {
  flex: 1;
  font-size: 0.78rem;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.logo-remove-btn {
  background: none; border: none;
  color: var(--text-3); cursor: pointer;
  font-size: 1rem;
  padding: 0.15rem 0.35rem;
  transition: color 0.15s;
  flex-shrink: 0;
}
.logo-remove-btn:hover { color: var(--red); }

#logo-input { display: none; }

/* ═══════════════════════════════════════════════════════
   QR preview (right col of generator)
   ═══════════════════════════════════════════════════════ */
.preview-wrap {
  position: sticky;
  top: 0;
  display: flex; flex-direction: column; gap: 1rem;
  align-self: start;
}

.preview-card {
  background: white;
  padding: 1.5rem;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  min-height: 320px;
  position: relative;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35), 0 0 40px rgba(0,212,232,0.05);
  overflow: hidden;
}
.preview-card.empty {
  background: var(--glass);
  border: 1px dashed var(--border-strong);
  box-shadow: none;
}
.preview-empty-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-3);
  text-align: center;
  padding: 1rem;
  line-height: 1.6;
  white-space: pre-line;
}

#qr-canvas {
  max-width: 100%;
  height: auto;
}
#qr-canvas:empty { display: none; }

/* Download buttons */
.dl-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.55rem;
}
.dl-btn {
  padding: 0.7rem 0.5rem;
  background: linear-gradient(135deg, rgba(0,212,232,0.18) 0%, rgba(0,212,232,0.06) 100%);
  border: 1px solid rgba(0,212,232,0.3); border-radius: var(--radius-sm);
  color: var(--gold);
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem; font-weight: 500;
  cursor: pointer; transition: all 0.2s;
  display: flex; align-items: center; justify-content: center; gap: 0.4rem;
  letter-spacing: 0.02em;
  position: relative; overflow: hidden;
}
.dl-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,212,232,0.12) 0%, transparent 60%);
  opacity: 0; transition: opacity 0.2s;
}
.dl-btn:hover:not(:disabled)::before { opacity: 1; }
.dl-btn:hover:not(:disabled) {
  border-color: rgba(0,212,232,0.5);
  box-shadow: 0 0 18px rgba(0,212,232,0.1);
}
.dl-btn:active:not(:disabled) { transform: scale(0.99); }
.dl-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.dl-btn.copy.copied {
  background: var(--green-dim);
  border-color: rgba(0,230,118,0.5);
  color: var(--green);
}

/* ═══════════════════════════════════════════════════════
   Cookie banner
   ═══════════════════════════════════════════════════════ */
#cookie-banner {
  position: fixed; bottom: 1.25rem; left: 50%; transform: translateX(-50%);
  max-width: 700px; width: calc(100% - 2.5rem);
  padding: 1rem 1.25rem;
  background: rgba(13,16,24,0.95); backdrop-filter: blur(20px);
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  display: none; align-items: center; gap: 1rem;
  z-index: 200; animation: cookieIn 0.5s ease both;
}
#cookie-banner.visible { display: flex; }
@keyframes cookieIn {
  from { opacity: 0; transform: translateX(-50%) translateY(20px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
.cookie-text { flex: 1; font-size: 0.78rem; color: var(--text-2); line-height: 1.55; }
.cookie-text strong { color: var(--text); font-weight: 500; }
.cookie-btn {
  padding: 0.5rem 1.1rem;
  background: var(--gold-dim); border: 1px solid rgba(0,212,232,0.3);
  border-radius: var(--radius-sm); color: var(--gold);
  font-family: 'Inter', sans-serif; font-size: 0.82rem; font-weight: 500;
  cursor: pointer; transition: all 0.2s; flex-shrink: 0;
}
.cookie-btn:hover { background: rgba(0,212,232,0.25); border-color: rgba(0,212,232,0.5); }

/* Global scrollbar */
* { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }

/* ═══════════════════════════════════════════════════════
   Mobile
   ═══════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .gen-panel {
    grid-template-columns: 1fr;
  }
  .preview-wrap { position: static; }
  .preview-card { min-height: 260px; }
}

/* ═══════════════════════════════════════════════════════
   Mobile (≤ 700px)
   ───────────────────────────────────────────────────────
   Order on mobile:
     1. Header (gencod logo + lang switcher)
     2. Generator panel (typ kódu, vstup, vzhľad, preview, downloads)
     3. Sidebar (history compact, donate always visible at bottom)
   Right panel (tools) is hidden on mobile.

   Layout switches from "fixed viewport with internal scroll" (desktop)
   to "native page scroll" (mobile) — better for touch & momentum scroll.
   ═══════════════════════════════════════════════════════ */
@media (max-width: 700px) {

  /* Allow native page-level scrolling */
  html, body {
    overflow-y: auto;
    height: auto;
    min-height: 100%;
  }
  #app {
    position: static;
    min-height: 100vh;
  }

  /* Stack panels vertically — generator first, sidebar second */
  .app-content {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    overflow: visible;
    height: auto;
  }
  .gen-panel {
    order: 1;
    overflow: visible;
    grid-template-columns: 1fr;  /* single-column form on mobile */
  }
  .side-panel {
    order: 2;
    border-right: none;
    border-top: 1px solid var(--border);
    height: auto;
    overflow: visible;
  }
  .right-panel { display: none; }

  /* Sidebar internals: history compact, donate always fully visible */
  .history-section,
  .donations-section {
    flex: none;  /* override desktop flex ratios */
  }
  .history-section {
    max-height: 280px;  /* ~3 entries; list has internal scroll */
  }

  /* Preview */
  .preview-wrap { position: static; }
  .preview-card { min-height: 260px; }
  .qr-wrap canvas, .qr-wrap img, .qr-wrap .donate-qr-target {
    width: 130px; height: 130px;
  }

  /* Header: just the flag, hide "Zmeniť jazyk" text */
  #lang-btn-label { display: none; }
  .lang-switch-btn { padding: 0.35rem 0.6rem; }

  /* Language picker screen: stack cards vertically */
  .lang-cards { flex-direction: column; }
  .lang-card { width: 240px; padding: 1.5rem; flex-direction: row; }
  .lang-flag { font-size: 2rem; }
}