/* ==========================================================================
   Modern Dark Glassmorphic Design System for QR Studio Pro
   ========================================================================== */

:root {
  --bg-main: #07090e;
  --bg-surface: #0e131f;
  --bg-surface-elevated: #141b2d;
  --bg-card: rgba(18, 24, 40, 0.75);
  --bg-card-hover: rgba(28, 36, 58, 0.85);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --border-focus: #6366f1;

  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.35);
  --accent-cyan: #06b6d4;
  --accent-pink: #ec4899;
  --accent-green: #10b981;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 32px var(--accent-glow);

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(6, 182, 212, 0.09) 0%, transparent 45%);
  background-attachment: fixed;
}

/* Container */
.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
}

.brand-logo-icon svg {
  width: 26px;
  height: 26px;
  color: #fff;
}

.brand-title {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(to right, #ffffff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.header-badges {
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.badge-tag.highlight {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.35);
  color: #c7d2fe;
}

/* Layout Grid */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 440px;
  gap: 28px;
  align-items: start;
}

@media (max-width: 1080px) {
  .main-layout {
    grid-template-columns: 1fr;
  }
}

/* Panels & Cards */
.panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-md);
  margin-bottom: 24px;
}

.panel-header {
  margin-bottom: 20px;
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #fff;
}

.panel-title svg {
  width: 20px;
  height: 20px;
  color: var(--accent-cyan);
}

.panel-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Platform / Social Media Grid */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
  margin-bottom: 24px;
}

.platform-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-normal);
  user-select: none;
}

.platform-btn:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--border-strong);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.platform-btn.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(6, 182, 212, 0.15));
  border-color: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.25);
}

.platform-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 6px;
}

.platform-icon svg {
  width: 22px;
  height: 22px;
}

.platform-name {
  font-size: 0.78rem;
  font-weight: 500;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

/* Forms & Inputs */
.preset-form-box {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 8px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input, select.form-input, textarea.form-input {
  width: 100%;
  padding: 10px 14px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.92rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-input:focus, select.form-input:focus, textarea.form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
  background: rgba(20, 27, 45, 0.95);
}

textarea.form-input {
  resize: vertical;
  min-height: 70px;
}

.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 6px 0;
}

.checkbox-wrapper input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-primary);
  cursor: pointer;
}

/* Center Logo Upload Area */
.logo-upload-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 680px) {
  .logo-upload-section {
    grid-template-columns: 1fr;
  }
}

.logo-dropzone {
  border: 2px dashed rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: 24px 16px;
  text-align: center;
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.logo-dropzone:hover, .logo-dropzone.dragover {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.06);
}

.logo-dropzone-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--accent-primary);
}

.logo-dropzone-icon svg {
  width: 24px;
  height: 24px;
}

.logo-dropzone-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.logo-dropzone-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Uploaded Logo Preview Box */
.logo-preview-box {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  width: 100%;
}

.logo-preview-thumb {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  padding: 4px;
  object-fit: contain;
  border: 1px solid var(--border-subtle);
}

.logo-preview-info {
  flex: 1;
  text-align: left;
}

.logo-preview-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
}

.logo-preview-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.btn-remove-logo {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-remove-logo:hover {
  background: rgba(239, 68, 68, 0.3);
  color: #ffffff;
}

/* Quick Logo Presets */
.preset-logos-wrap {
  margin-top: 16px;
}

.preset-logos-label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: block;
}

.preset-logos-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preset-logo-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.preset-logo-pill:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-strong);
  color: #ffffff;
  transform: translateY(-1px);
}

.pill-icon {
  width: 14px;
  height: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pill-icon svg {
  width: 14px;
  height: 14px;
}

/* Logo Controls (Sliders & Shapes) */
.controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.control-item {
  margin-bottom: 12px;
}

.control-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.control-val {
  font-weight: 600;
  color: #fff;
}

input[type="range"] {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  outline: none;
  -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 0 10px var(--accent-glow);
  transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Shape Segmented Buttons */
.segmented-group {
  display: flex;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 3px;
}

.seg-btn {
  flex: 1;
  padding: 7px 10px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.seg-btn:hover {
  color: #fff;
}

.seg-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
}

/* Color Pickers Row */
.color-inputs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.color-input-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 6px 10px;
}

.color-input-box input[type="color"] {
  -webkit-appearance: none;
  border: none;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  background: none;
}

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

.color-input-box input[type="color"]::-webkit-color-swatch {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
}

.color-box-label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Color Palettes Pills */
.palette-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.palette-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.palette-pill:hover, .palette-pill.active {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.12);
  color: #fff;
}

.palette-swatch {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: inline-block;
}

/* ==========================================================================
   Preview & Actions Column (Right Side)
   ========================================================================== */

.preview-sidebar {
  position: sticky;
  top: 24px;
}

.preview-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.canvas-frame {
  position: relative;
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1 / 1;
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 12px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.canvas-frame canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
  border-radius: 8px;
}

/* ECC Status Tag */
.ecc-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 9999px;
  margin-bottom: 20px;
}

.ecc-badge.high {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.ecc-badge.standard {
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #60a5fa;
}

.badge-dot-green {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.badge-dot-blue {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3b82f6;
}

/* Action Buttons */
.action-buttons-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn-primary {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 20px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-primary-hover));
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 16px var(--accent-glow);
  transition: all var(--transition-normal);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-primary svg {
  width: 18px;
  height: 18px;
}

.button-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.btn-secondary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.btn-secondary svg {
  width: 16px;
  height: 16px;
}

/* Resolution Bar */
.resolution-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-top: 14px;
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.res-select {
  background: transparent;
  border: none;
  color: #fff;
  font-weight: 600;
  font-size: 0.82rem;
  cursor: pointer;
  outline: none;
}

.res-select option {
  background: var(--bg-surface-elevated);
  color: #fff;
}

/* Raw Payload Box */
.payload-box {
  width: 100%;
  margin-top: 18px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px;
}

.payload-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.payload-title {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.btn-copy-payload {
  background: none;
  border: none;
  color: var(--accent-cyan);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
}

.btn-copy-payload:hover {
  text-decoration: underline;
}

.payload-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.75rem;
  color: #a5f3fc;
  word-break: break-all;
  max-height: 60px;
  overflow-y: auto;
  line-height: 1.4;
}

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

.text-rose-500 {
  color: #f43f5e;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #1e293b;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  color: #fff;
  font-size: 0.86rem;
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 380px;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.toast-success .toast-indicator { background: #10b981; box-shadow: 0 0 8px #10b981; }
.toast-error .toast-indicator { background: #ef4444; box-shadow: 0 0 8px #ef4444; }
.toast-info .toast-indicator { background: #3b82f6; box-shadow: 0 0 8px #3b82f6; }