@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Fira+Code:wght@400;500;600&display=swap');

:root {
  --bg-main: #000000;
  --bg-card: #0a0a0a;
  --bg-input: #121212;
  --border-color: #262626;
  --border-focus: #ffffff;
  --text-primary: #ffffff;
  --text-secondary: #a3a3a3;
  --text-muted: #525252;
  --accent: #ffffff;
  --accent-glow: rgba(255, 255, 255, 0.05);
  --accent-success: #a3a3a3;
  --accent-success-glow: rgba(255, 255, 255, 0.05);
  
  --font-display: 'Lora', Georgia, serif;
  --font-body: 'Fira Code', 'Courier New', monospace;
  
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;
  --shadow-glow: none;
  
  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;
  --radius-xl: 0px;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-image: 
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.02) 0%, transparent 80%);
  pointer-events: none;
  transform: translate3d(0, 0, 0);
}

header {
  padding: 2rem 2rem 1rem 2rem;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

h1 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-body);
}

main {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 2rem 3rem 2rem;
  flex-grow: 1;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 1024px) {
  main {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  transition: border-color 0.2s ease;
  transform: translate3d(0, 0, 0);
}

.panel:hover {
  border-color: #333333;
}

.content-type-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  background: rgba(0, 0, 0, 0.4);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.02);
}

.tab-btn.active {
  color: var(--bg-main);
  background: var(--accent);
}

.form-section {
  display: none;
  animation: fadeIn 0.2s ease forwards;
}

.form-section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.palette-import-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: stretch;
}

.palette-import-help {
  margin-top: 0.55rem;
  color: var(--text-muted);
  font-size: 0.72rem;
  line-height: 1.4;
}

.palette-import-help.error {
  color: #d87a7a;
}

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

input[type="text"],
input[type="password"],
input[type="number"],
select {
  width: 100%;
  padding: 0.85rem 1rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: all 0.15s ease;
  outline: none;
}

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

input:focus,
select:focus {
  border-color: var(--border-focus);
  background-color: #151515;
}

.radio-tile-group {
  display: flex;
  gap: 0.5rem;
}

.radio-tile-label {
  flex: 1;
  position: relative;
  cursor: pointer;
  text-align: center;
}

.radio-tile-label input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio-tile-content {
  display: block;
  padding: 0.75rem 0.5rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.15s ease;
}

.radio-tile-label input:checked + .radio-tile-content {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.section-divider {
  height: 1px;
  background: var(--border-color);
  margin: 2rem 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
}

.customization-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .customization-grid {
    grid-template-columns: 1fr;
  }
}

.color-picker-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-input);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.color-picker-wrapper input[type="color"] {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: 0;
  cursor: pointer;
  background: none;
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-picker-wrapper input[type="color"]::-webkit-color-swatch {
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 0;
}

.color-hex-text {
  font-family: var(--font-body);
  font-size: 0.85rem;
  text-transform: uppercase;
  flex-grow: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  outline: none;
}

.color-presets {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.preset-dot {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 0;
  cursor: pointer;
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.preset-dot:hover {
  border-color: #ffffff;
  transform: translateY(-1px);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16), 0 0 0 3px rgba(255, 255, 255, 0.05);
}

.style-select-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.style-select-grid--two {
  grid-template-columns: repeat(2, 1fr);
}

.style-option {
  position: relative;
  cursor: pointer;
}

.style-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.style-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 0.5rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  gap: 0.35rem;
  transition: all 0.15s ease;
  text-transform: uppercase;
}

.style-box svg {
  color: var(--text-muted);
}

.style-option input:checked + .style-box {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.style-option input:checked + .style-box svg {
  color: var(--accent);
}

.logo-upload-zone {
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  background: rgba(0, 0, 0, 0.2);
  transition: all 0.15s ease;
  position: relative;
}

.logo-upload-zone:hover,
.logo-upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.02);
}

.logo-upload-zone svg {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.logo-upload-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.logo-upload-subtext {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.logo-uploaded-preview {
  display: none;
  align-items: center;
  gap: 1rem;
  background: var(--bg-input);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  margin-top: 1rem;
  animation: fadeIn 0.2s ease forwards;
}

.logo-uploaded-preview img {
  width: 2.5rem;
  height: 2.5rem;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: #ffffff;
  padding: 2px;
}

.logo-details {
  flex-grow: 1;
  min-width: 0;
}

.logo-name {
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-remove-logo {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.btn-remove-logo:hover {
  color: #ff3b30;
}

.btn-secondary {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0 1rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-secondary:hover:not(:disabled) {
  background: #1a1a1a;
  border-color: #3a3a3a;
}

.btn-secondary:disabled {
  opacity: 0.55;
  cursor: wait;
}

.slider-group {
  margin-top: 1rem;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border-color);
  border-radius: 0px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 0px;
  background: var(--accent);
  cursor: pointer;
}

.preview-panel {
  position: sticky;
  top: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  align-self: start;
  width: 100%;
}

.preview-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.92);
  padding: 0.3rem 0.85rem;
  border-radius: 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background:
    linear-gradient(110deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.12) 18%, rgba(255, 255, 255, 0.04) 36%) 0 0 / 220% 100%,
    rgba(255, 255, 255, 0.03);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.03),
    0 0 0 1px rgba(255, 255, 255, 0.02);
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  position: relative;
  overflow: hidden;
  animation: previewShimmer 4.8s linear infinite;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.08);
}

@keyframes previewShimmer {
  from {
    background-position: 160% 0, 0 0;
  }
  to {
    background-position: -60% 0, 0 0;
  }
}

.preview-container {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: visible;
  transform: translate3d(0, 0, 0);
}

.qr-canvas-holder {
  width: 280px;
  height: 280px;
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.qr-canvas-holder canvas,
.qr-canvas-holder svg {
  max-width: 100% !important;
  max-height: 100% !important;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.qr-canvas-holder.empty {
  background: #ffffff;
  border-color: var(--border-color);
}

.download-actions {
  width: 100%;
  margin-top: 1rem;
  position: sticky;
  bottom: 0;
  z-index: 5;
  background: var(--bg-card);
  padding-top: 1rem;
}

.download-btn-group {
  display: flex;
  width: 100%;
  position: relative;
}

.btn-download-main {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--bg-main);
  border: none;
  padding: 1rem 1.25rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s ease;
  border-right: 1px solid rgba(0, 0, 0, 0.18);
}

.btn-download-main:hover {
  background: #e5e5e5;
}

.format-dropdown-wrapper {
  position: relative;
}

.btn-format-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  background: var(--accent);
  color: var(--bg-main);
  border: none;
  padding: 1rem 0.85rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.15s ease;
  white-space: nowrap;
  border-left: 1px solid rgba(0, 0, 0, 0.18);
  height: 100%;
}

.btn-format-toggle:hover {
  background: #e5e5e5;
}

.btn-format-toggle[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.btn-format-toggle svg {
  transition: transform 0.15s ease;
}

.format-dropdown {
  display: none;
  position: absolute;
  bottom: calc(100% + 6px);
  right: 0;
  min-width: 200px;
  background: #1a1a1a;
  border: 1px solid var(--border-color);
  list-style: none;
  z-index: 100;
  animation: dropUp 0.12s ease forwards;
}

.format-dropdown.open {
  display: block;
}

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

.format-option {
  display: flex;
  align-items: center;
  padding: 0.65rem 1rem;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: background 0.1s ease;
}

.format-option:last-child {
  border-bottom: none;
}

.format-option:hover {
  background: rgba(255, 255, 255, 0.05);
}

.format-option.selected {
  background: rgba(255, 255, 255, 0.08);
}

.format-option.selected::after {
  content: ' ✓';
  color: var(--accent);
  margin-left: auto;
}

.copy-link-holder {
  margin-top: 1rem;
  width: 100%;
}

.btn-text {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.15s ease;
  width: 100%;
  justify-content: center;
  padding: 0.5rem;
}

.btn-text:hover {
  color: var(--text-secondary);
}

footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
}

@media (min-width: 1025px) {
  body {
    min-height: 100vh;
  }
  
  main {
    flex: 1;
  }
  
  .panel {
    max-height: 100%;
    overflow-y: auto;
    padding-right: 1rem;
  }
  
  .panel::-webkit-scrollbar {
    width: 4px;
  }
  
  .panel::-webkit-scrollbar-track {
    background: transparent;
  }
  
  .panel::-webkit-scrollbar-thumb {
    background: #262626;
  }
  
  .panel::-webkit-scrollbar-thumb:hover {
    background: #333333;
  }
  
  .preview-panel {
    position: sticky;
  }
}

.social-presets-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.social-preset-btn {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.85rem 0.5rem 0.75rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  transition: all 0.15s ease;
  position: relative;
}

.social-preset-btn:hover {
  color: var(--text-primary);
  border-color: #3a3a3a;
  background: #1a1a1a;
}

.social-preset-btn.active {
  background: var(--accent);
  color: var(--bg-main);
  border-color: var(--accent);
}

.social-preset-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.social-preset-name {
  font-family: var(--font-body);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.qr-canvas-holder.has-sticker-frame {
  width: 328px;
  height: auto;
  min-height: 360px;
  flex-direction: column;
  padding: 24px;
  background: #ffffff;
  transition: background-color 0.2s ease;
}

.sticker-label {
  width: 100%;
  text-align: center;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  margin-top: 18px;
  padding-top: 15px;
  border-top: 1.5px dashed var(--border-color);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: border-color 0.2s ease, color 0.2s ease;
}