/* ============================================================
   TEMPLATEFORGE — STYLES.CSS
   Mobile-first · Glassmorphism · Acid Neon palette
   ============================================================ */

/* ============================================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================================ */
:root {
  /* Acid Neon Palette */
  --accent:        #ccff00;
  --accent-dim:    #a8d400;
  --accent-glow:   rgba(204, 255, 0, 0.25);
  --pink:          #ff3cac;
  --pink-glow:     rgba(255, 60, 172, 0.2);

  /* Dark backgrounds */
  --bg-base:       #0d0d0d;
  --bg-surface:    #141414;
  --bg-elevated:   #1a1a1a;
  --bg-glass:      rgba(255, 255, 255, 0.04);
  --bg-glass-hover:rgba(255, 255, 255, 0.08);

  /* Borders */
  --border:        rgba(255, 255, 255, 0.08);
  --border-accent: rgba(204, 255, 0, 0.3);

  /* Text */
  --text-primary:  #f0f0f0;
  --text-secondary:#888888;
  --text-muted:    #555555;

  /* Fonts */
  --font-display:  'Plus Jakarta Sans', sans-serif;
  --font-mono:     'Space Mono', monospace;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  18px;
  --radius-xl:  24px;
  --radius-full:9999px;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.6);
  --shadow-accent: 0 0 20px rgba(204,255,0,0.15);

  /* Transitions */
  --transition-fast:   0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow:   0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --header-height:  56px;
  --sidebar-width:  280px;
  --left-panel-w:   56px;
  --right-panel-w:  240px;
  --bottom-bar-h:   56px;
}

/* Light mode overrides */
body.light-mode {
  --bg-base:       #f4f4f4;
  --bg-surface:    #ffffff;
  --bg-elevated:   #eeeeee;
  --bg-glass:      rgba(0, 0, 0, 0.04);
  --bg-glass-hover:rgba(0, 0, 0, 0.08);
  --border:        rgba(0, 0, 0, 0.1);
  --text-primary:  #111111;
  --text-secondary:#555555;
  --text-muted:    #999999;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-display);
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

button {
  font-family: var(--font-display);
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

input, textarea, select {
  font-family: var(--font-display);
  outline: none;
}

a { color: var(--accent); text-decoration: none; }

/* ============================================================
   3. SCROLLBAR STYLING
   ============================================================ */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-dim); }

/* ============================================================
   4. SIDEBAR OVERLAY
   ============================================================ */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.sidebar-overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* ============================================================
   5. SIDEBAR MENU
   ============================================================ */
.sidebar-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  z-index: 300;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
  overflow: hidden;
}

/* Glassmorphism effect on sidebar */
.sidebar-menu::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(204, 255, 0, 0.03) 0%,
    transparent 50%,
    rgba(255, 60, 172, 0.03) 100%
  );
  pointer-events: none;
}

.sidebar-menu.open {
  transform: translateX(0);
  box-shadow: var(--shadow-lg);
}

/* Sidebar Header */
.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-md);
  border-bottom: 1px solid var(--border);
  min-height: var(--header-height);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-icon {
  font-size: 22px;
  filter: drop-shadow(0 0 8px var(--accent));
}

.logo-text {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, var(--accent), var(--pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.close-sidebar-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.close-sidebar-btn:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-sm) 0;
}

.nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 14px var(--space-md);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--bg-glass);
  color: var(--accent);
  border-left-color: var(--accent);
}

.nav-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.nav-label { flex: 1; }

.nav-badge {
  background: var(--accent);
  color: #000;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  min-width: 20px;
  text-align: center;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: var(--space-md);
  border-top: 1px solid var(--border);
}

.version-tag {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ============================================================
   6. TOP HEADER
   ============================================================ */
.top-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0 var(--space-sm);
  z-index: 100;
  backdrop-filter: blur(12px);
}

/* Header Buttons */
.header-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  color: var(--text-primary);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.header-btn:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-accent);
}

/* Hamburger Menu Button */
.menu-btn {
  flex-direction: column;
  gap: 4px;
  padding: 10px;
}

.hamburger-line {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Project Name Input */
.project-name-wrap {
  flex: 1;
  min-width: 0;
}

.project-name-input {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.3px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.project-name-input:focus {
  background: var(--bg-glass);
  outline: 1px solid var(--border-accent);
}

/* Header Action Buttons */
.header-actions {
  display: flex;
  gap: 4px;
}

.action-btn {
  font-size: 18px;
}

/* ============================================================
   7. MAIN APP LAYOUT
   ============================================================ */
.app-main {
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
  position: relative;
}

/* ============================================================
   8. APP PANELS
   ============================================================ */
.app-panel {
  display: none;
  animation: panelFadeIn 0.3s ease;
}

.app-panel.active-panel {
  display: block;
}

@keyframes panelFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.panel-inner {
  padding: var(--space-lg) var(--space-md);
  max-width: 600px;
  margin: 0 auto;
}

/* Panel Hero */
.panel-hero {
  text-align: center;
  padding: var(--space-xl) 0 var(--space-lg);
}

.panel-title {
  font-size: clamp(24px, 6vw, 36px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.panel-title .accent {
  background: linear-gradient(90deg, var(--accent), var(--pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.panel-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  max-width: 320px;
  margin: 0 auto;
}

.panel-title-sm {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: var(--space-sm);
}

.panel-desc {
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

/* Panel Top Bar */
.panel-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

/* ============================================================
   9. QUICK ACTION CARDS
   ============================================================ */
.quick-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.quick-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  transition: all var(--transition-normal);
  color: var(--text-primary);
}

.quick-card:hover, .quick-card:active {
  background: var(--bg-glass-hover);
  border-color: var(--border-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

.qc-icon { font-size: 28px; }

.qc-label {
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  color: var(--text-secondary);
}

/* ============================================================
   10. SECTION BLOCKS & CARD GRID
   ============================================================ */
.section-block {
  margin-bottom: var(--space-xl);
}

.section-heading {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.card-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* Template / Project Card */
.item-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: all var(--transition-fast);
  animation: cardSlideIn 0.3s ease;
}

@keyframes cardSlideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}

.item-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-glass-hover);
}

.item-card-thumb {
  width: 56px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  border: 1px solid var(--border);
}

.item-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.item-card-info {
  flex: 1;
  min-width: 0;
}

.item-card-name {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-card-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.item-card-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.card-action-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  color: var(--text-secondary);
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  border: 1px solid var(--border);
}

.card-action-btn:hover { background: var(--bg-glass-hover); color: var(--text-primary); }
.card-action-btn.open-btn:hover { color: var(--accent); border-color: var(--border-accent); }
.card-action-btn.delete-btn:hover { color: #ff4444; border-color: rgba(255,68,68,0.3); }

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  color: var(--text-muted);
}

.empty-icon { font-size: 36px; display: block; margin-bottom: var(--space-sm); }
.empty-state p { font-size: 13px; }

/* ============================================================
   11. FORM ELEMENTS
   ============================================================ */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.form-input {
  width: 100%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px var(--space-md);
  color: var(--text-primary);
  font-size: 14px;
  transition: border-color var(--transition-fast);
}

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

.form-textarea {
  width: 100%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px var(--space-md);
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font-mono);
  resize: vertical;
  transition: border-color var(--transition-fast);
  line-height: 1.5;
}

.form-textarea:focus {
  border-color: var(--border-accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ============================================================
   12. UPLOAD ZONES
   ============================================================ */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  background: var(--bg-glass);
}

.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.upload-zone.small-zone {
  padding: var(--space-md);
}

.upload-icon { font-size: 32px; display: block; margin-bottom: var(--space-sm); }
.upload-text { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.upload-hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.file-input-hidden {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

/* Files List */
.files-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: var(--space-sm);
}

.file-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 12px;
}

.file-item-icon { font-size: 16px; }
.file-item-name { flex: 1; color: var(--text-secondary); }
.file-item-size { color: var(--text-muted); font-family: var(--font-mono); }

/* File Status */
.file-status {
  font-size: 12px;
  color: var(--accent);
  margin-top: 6px;
  padding-left: 4px;
}

/* Image Preview */
.img-preview-wrap {
  margin-top: var(--space-sm);
}

.img-preview-wrap img {
  width: 100%;
  max-height: 120px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

/* ============================================================
   13. BUTTONS
   ============================================================ */
.primary-btn {
  background: var(--accent);
  color: #000;
  font-size: 14px;
  font-weight: 700;
  padding: 14px var(--space-lg);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  letter-spacing: 0.3px;
}

.primary-btn:hover {
  background: var(--accent-dim);
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent);
}

.primary-btn:active { transform: translateY(0); }

.full-btn { width: 100%; }

.secondary-btn {
  background: var(--bg-glass);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  padding: 12px var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}

.secondary-btn:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-accent);
}

.pill-btn {
  background: var(--accent);
  color: #000;
  font-size: 12px;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.pill-btn:hover { background: var(--accent-dim); }

.pill-btn-sm {
  background: var(--bg-glass);
  color: var(--text-primary);
  font-size: 11px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}

.pill-btn-sm:hover {
  border-color: var(--border-accent);
  color: var(--accent);
}

.danger-btn {
  background: rgba(255, 68, 68, 0.15);
  color: #ff4444;
  font-size: 13px;
  font-weight: 600;
  padding: 12px var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 68, 68, 0.3);
  transition: all var(--transition-fast);
  width: 100%;
}

.danger-btn:hover {
  background: rgba(255, 68, 68, 0.25);
}

/* ============================================================
   14. EXPORT CARDS
   ============================================================ */
.export-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.export-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-glass-hover);
  transform: translateX(4px);
}

.export-card-icon { font-size: 32px; flex-shrink: 0; }

.export-card-info { flex: 1; }
.export-card-info h3 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.export-card-info p { font-size: 12px; color: var(--text-secondary); }
.export-card-info code {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--bg-elevated);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--accent);
}

.export-arrow { font-size: 18px; color: var(--text-muted); }

/* Info Box */
.info-box {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-size: 13px;
  color: var(--text-secondary);
}

.info-icon { font-size: 16px; flex-shrink: 0; }

/* ============================================================
   15. SETTINGS
   ============================================================ */
.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
}

.setting-info { flex: 1; }
.setting-label { display: block; font-size: 14px; font-weight: 600; }
.setting-desc { display: block; font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* Toggle Switch */
.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle-switch input { opacity: 0; width: 0; height: 0; }

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast);
  border: 1px solid var(--border);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 2px;
  top: 2px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--accent);
  border-color: var(--accent);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
  background: #000;
}

/* Color Picker */
.color-picker-input {
  width: 40px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: none;
  cursor: pointer;
  padding: 2px;
}

/* Setting Select */
.setting-select {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  padding: 6px 10px;
}

/* Danger Zone */
.danger-zone {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  border: 1px solid rgba(255, 68, 68, 0.2);
  border-radius: var(--radius-lg);
  background: rgba(255, 68, 68, 0.05);
}

.danger-title {
  font-size: 13px;
  font-weight: 700;
  color: #ff4444;
  margin-bottom: var(--space-md);
}

/* ============================================================
   16. EDITOR PANEL
   ============================================================ */
.editor-panel {
  height: calc(100vh - var(--header-height));
  display: flex !important;
  flex-direction: column;
  overflow: hidden;
}

/* Editor Top Bar */
.editor-topbar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px var(--space-md);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.editor-back-btn {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}

.editor-back-btn:hover { color: var(--text-primary); background: var(--bg-glass-hover); }

.editor-template-label {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Editor Body */
.editor-body {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
}

/* ============================================================
   17. LEFT TOOL PANEL
   ============================================================ */
.left-tool-panel {
  width: var(--left-panel-w);
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
}

.tool-panel-header {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-align: center;
  padding: 8px 4px 4px;
}

.tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 10px 4px;
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 600;
  transition: all var(--transition-fast);
  border-left: 2px solid transparent;
  width: 100%;
}

.tool-btn:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
}

.tool-btn.active-tool {
  color: var(--accent);
  background: var(--bg-glass);
  border-left-color: var(--accent);
}

.tool-icon {
  font-size: 18px;
  font-weight: 700;
  font-family: var(--font-mono);
  line-height: 1;
}

.tool-name { font-size: 9px; }

/* ============================================================
   18. EDITOR CANVAS
   ============================================================ */
.editor-canvas {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-base);
  overflow: hidden;
  position: relative;
}

/* Canvas Toolbar */
.canvas-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px var(--space-sm);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.canvas-tool-btn {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}

.canvas-tool-btn:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

/* Device Switcher */
.device-switcher {
  display: flex;
  gap: 2px;
  margin-left: auto;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.device-btn {
  width: 28px;
  height: 26px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--text-muted);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.device-btn.active-device {
  background: var(--accent);
  color: #000;
}

/* Canvas Frame Wrap */
.canvas-frame-wrap {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow: auto;
  padding: var(--space-md);
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 24px,
    rgba(255,255,255,0.02) 24px,
    rgba(255,255,255,0.02) 25px
  ),
  repeating-linear-gradient(
    90deg,
    transparent,
    transparent 24px,
    rgba(255,255,255,0.02) 24px,
    rgba(255,255,255,0.02) 25px
  );
}

/* Template Frame (iframe) */
.template-frame {
  border: none;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  transition: width var(--transition-slow), height var(--transition-slow);
}

/* Device frame sizes */
.template-frame.mobile-frame  { width: 375px;  height: 667px; }
.template-frame.tablet-frame  { width: 768px;  height: 600px; }
.template-frame.desktop-frame { width: 100%;   height: 100%;  min-height: 500px; }

/* Canvas Empty State */
.canvas-empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  text-align: center;
  padding: var(--space-xl);
}

.canvas-empty-state.hidden { display: none; }

.empty-big-icon { font-size: 56px; }
.canvas-empty-state h3 { font-size: 20px; font-weight: 700; }
.canvas-empty-state p { font-size: 13px; color: var(--text-secondary); }

/* ============================================================
   19. RIGHT PROPERTIES PANEL
   ============================================================ */
.right-props-panel {
  width: var(--right-panel-w);
  background: var(--bg-surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
  /* Hidden on mobile by default */
  transform: translateX(100%);
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: 50;
  transition: transform var(--transition-slow);
}

.right-props-panel.panel-open {
  transform: translateX(0);
  box-shadow: var(--shadow-lg);
}

.props-panel-header {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  padding: var(--space-md);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.props-empty {
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  color: var(--text-muted);
}

.props-empty-icon { font-size: 28px; display: block; margin-bottom: var(--space-sm); }
.props-empty p { font-size: 12px; line-height: 1.6; }

/* Props Groups */
.props-group {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.props-group.hidden { display: none; }

.props-group-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.prop-row {
  margin-bottom: var(--space-md);
}

.prop-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.prop-input {
  width: 80px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  color: var(--text-primary);
  font-size: 13px;
}

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

.prop-input-full {
  width: 100%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  color: var(--text-primary);
  font-size: 13px;
}

.prop-input-full:focus { border-color: var(--border-accent); }

.prop-textarea {
  width: 100%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  color: var(--text-primary);
  font-size: 12px;
  resize: vertical;
}

.prop-textarea:focus { border-color: var(--border-accent); }

.prop-input-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.prop-unit {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.prop-color {
  width: 36px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: none;
  cursor: pointer;
  padding: 2px;
}

.prop-select {
  width: 100%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 12px;
  padding: 7px 8px;
}

.prop-file {
  width: 100%;
  font-size: 12px;
  color: var(--text-secondary);
}

/* Alignment Buttons */
.align-btns {
  display: flex;
  gap: 4px;
}

.align-btn {
  width: 32px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.align-btn:hover, .align-btn.active-align {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}

/* Section Actions */
.section-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.action-sm-btn {
  flex: 1;
  min-width: 70px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 600;
  padding: 7px 6px;
  transition: all var(--transition-fast);
}

.action-sm-btn:hover { background: var(--bg-glass-hover); color: var(--text-primary); }
.action-sm-btn.danger-sm:hover { color: #ff4444; border-color: rgba(255,68,68,0.3); }

/* Apply Button */
.apply-btn {
  width: 100%;
  background: var(--accent);
  color: #000;
  font-size: 12px;
  font-weight: 700;
  padding: 10px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  margin-top: var(--space-sm);
}

.apply-btn:hover { background: var(--accent-dim); }

/* ============================================================
   20. BOTTOM MOBILE CONTROL BAR
   ============================================================ */
.bottom-control-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 var(--space-sm);
  height: var(--bottom-bar-h);
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.bottom-btn {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  padding: 8px 12px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.bottom-btn:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

.bottom-device-switcher {
  display: flex;
  gap: 2px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px;
  margin: 0 auto;
}

.bottom-device-btn {
  width: 32px;
  height: 30px;
  border-radius: 4px;
  font-size: 14px;
  color: var(--text-muted);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.bottom-device-btn.active-device {
  background: var(--accent);
  color: #000;
}

/* ============================================================
   21. PREVIEW SCREEN
   ============================================================ */
.preview-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-base);
  z-index: 500;
  display: flex;
  flex-direction: column;
  animation: previewSlideIn 0.3s ease;
}

.preview-screen.hidden { display: none; }

@keyframes previewSlideIn {
  from { opacity: 0; transform: scale(0.98); }
  to   { opacity: 1; transform: scale(1); }
}

/* Preview Top Bar */
.preview-topbar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0 var(--space-md);
  height: var(--header-height);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  overflow-x: auto;
}

.preview-back-btn {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.preview-back-btn:hover { background: var(--accent); color: #000; }

.preview-device-btns {
  display: flex;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.preview-device-btn {
  font-size: 12px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.preview-device-btn.active-preview-device {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}

.preview-fullscreen-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.preview-fullscreen-btn:hover { color: var(--text-primary); background: var(--bg-glass-hover); }

/* Preview Frame Outer */
.preview-frame-outer {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow: auto;
  padding: var(--space-lg);
  background: #1a1a1a;
}

/* Preview iframe */
.preview-iframe {
  border: none;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  transition: width var(--transition-slow), height var(--transition-slow);
}

.preview-iframe.mobile-preview  { width: 375px;  height: 667px; }
.preview-iframe.tablet-preview  { width: 768px;  height: 600px; }
.preview-iframe.desktop-preview { width: 100%;   height: 100%;  min-height: 500px; }

/* ============================================================
   22. MODALS
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  z-index: 600;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: var(--space-md);
  animation: modalFadeIn 0.2s ease;
}

.modal-overlay.hidden { display: none; }

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

.modal-box {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl) var(--radius-xl) var(--radius-md) var(--radius-md);
  width: 100%;
  max-width: 480px;
  max-height: 80vh;
  overflow-y: auto;
  animation: modalSlideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideUp {
  from { transform: translateY(40px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.small-modal { max-height: 50vh; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-lg) var(--space-md);
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 700;
}

.modal-close-btn {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  color: var(--text-secondary);
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover { background: var(--bg-glass-hover); color: var(--text-primary); }

.modal-body {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.modal-body p { font-size: 13px; color: var(--text-secondary); margin-bottom: var(--space-sm); }

.modal-actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.modal-actions button { flex: 1; }

/* Export Modal Buttons */
.export-modal-btn {
  width: 100%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  transition: all var(--transition-fast);
}

.export-modal-btn:hover {
  border-color: var(--border-accent);
  background: var(--bg-glass-hover);
  color: var(--accent);
}

/* Attach Editor List */
.attach-editor-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.attach-editor-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: all var(--transition-fast);
}

.attach-editor-item:hover { border-color: var(--border-accent); }

.attach-editor-name { font-size: 14px; font-weight: 600; }
.attach-editor-meta { font-size: 11px; color: var(--text-muted); }

.attach-btn {
  background: var(--accent);
  color: #000;
  font-size: 12px;
  font-weight: 700;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.attach-btn:hover { background: var(--accent-dim); }

/* ============================================================
   23. TOAST NOTIFICATION
   ============================================================ */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 13px;
  font-weight: 600;
  z-index: 900;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.hidden { display: none; }

/* ============================================================
   24. AUTO-SAVE INDICATOR
   ============================================================ */
.autosave-indicator {
  position: fixed;
  top: calc(var(--header-height) + 8px);
  right: var(--space-md);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  z-index: 150;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 4px 10px;
  backdrop-filter: blur(8px);
}

.autosave-indicator.hidden { display: none; }

.autosave-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

/* ============================================================
   25. UTILITY CLASSES
   ============================================================ */
.hidden { display: none !important; }

/* ============================================================
   26. KEYFRAME ANIMATIONS (for template elements)
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes zoomIn {
  from { opacity: 0; transform: scale(0.8); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes bounceIn {
  0%   { opacity: 0; transform: scale(0.3); }
  50%  { opacity: 1; transform: scale(1.05); }
  70%  { transform: scale(0.9); }
  100% { transform: scale(1); }
}

/* ============================================================
   27. RESPONSIVE — TABLET (768px+)
   ============================================================ */
@media (min-width: 768px) {

  /* Show right panel inline on tablet+ */
  .right-props-panel {
    position: relative;
    transform: translateX(0);
    box-shadow: none;
  }

  /* Wider sidebar */
  :root { --sidebar-width: 300px; }

  /* Larger canvas frames */
  .template-frame.mobile-frame  { width: 390px; height: 700px; }

  /* Panel inner wider */
  .panel-inner { padding: var(--space-xl) var(--space-lg); }

  /* Quick actions 4 columns */
  .quick-actions { grid-template-columns: repeat(4, 1fr); }

}

/* ============================================================
   28. RESPONSIVE — DESKTOP (1024px+)
   ============================================================ */
@media (min-width: 1024px) {

  :root {
    --left-panel-w:  72px;
    --right-panel-w: 280px;
  }

  .tool-btn { padding: 12px 8px; }
  .tool-icon { font-size: 20px; }
  .tool-name { font-size: 10px; }

  /* Sidebar always visible on desktop */
  .sidebar-menu {
    transform: translateX(0);
    position: relative;
    height: auto;
    flex-shrink: 0;
  }

  .sidebar-overlay { display: none !important; }

  .app-main {
    display: flex;
    margin-left: var(--sidebar-width);
  }

  .top-header { left: var(--sidebar-width); }

}

/* ============================================================
   29. TOUCH OPTIMIZATIONS
   ============================================================ */
@media (hover: none) {
  /* Larger tap targets on touch devices */
  .nav-item { padding: 16px var(--space-md); }
  .tool-btn { padding: 12px 4px; }
  .header-btn { width: 44px; height: 44px; }
  .card-action-btn { width: 36px; height: 36px; }
}

/* ============================================================
   30. GLASSMORPHISM CARD EFFECT
   ============================================================ */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

/* Neon glow effect for accent elements */
.neon-glow {
  box-shadow: 0 0 10px var(--accent-glow), 0 0 30px var(--accent-glow);
}