/* ═══════════════════════════════════════════════════════════
   AmplifAI Studio — Main UI Chrome Styles
   ═══════════════════════════════════════════════════════════ */

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

:root {
  --chrome-bg: #FFFFFF;
  --chrome-border: #E5E7EB;
  --chrome-text: #111827;
  --chrome-muted: #6B7280;
  --chrome-hover: #F3F4F6;
  --chrome-active: #111827;
  --chrome-active-text: #FFFFFF;
  --chrome-accent: #111827;
  --drawer-width: 260px;
  --topbar-height: 52px;
  --toolbar-height: 72px;
  --font-ui: 'Inter', -apple-system, sans-serif;
}

html, body {
  height: 100%;
  font-family: var(--font-ui);
  background: #F9FAFB;
  color: var(--chrome-text);
  overflow: hidden;
}

/* ── TOP BAR ─────────────────────────────────────────────── */
.top-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-height);
  background: var(--chrome-bg);
  border-bottom: 1px solid var(--chrome-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  z-index: 1000;
  gap: 8px;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  min-width: 200px;
}

.drawer-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--chrome-active);
  color: var(--chrome-active-text);
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-ui);
  transition: opacity 0.15s;
}
.drawer-toggle:hover { opacity: 0.85; }

.logo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--chrome-text);
  white-space: nowrap;
}
.logo-icon { font-size: 16px; }
.logo-text strong { font-weight: 700; }

.top-bar-center {
  flex: 1;
  display: flex;
  justify-content: center;
  overflow: hidden;
}

.page-type-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: #F3F4F6;
  border: 1px solid var(--chrome-border);
  border-radius: 8px;
  padding: 3px;
  overflow-x: auto;
  scrollbar-width: none;
  max-width: 100%;
}
.page-type-switcher::-webkit-scrollbar { display: none; }

.page-type-btn {
  padding: 5px 12px;
  border: none;
  background: transparent;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--chrome-muted);
  cursor: pointer;
  white-space: nowrap;
  font-family: var(--font-ui);
  transition: all 0.15s;
}
.page-type-btn:hover { background: #FFFFFF; color: var(--chrome-text); }
.page-type-btn.active {
  background: #FFFFFF;
  color: var(--chrome-text);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  min-width: 200px;
  justify-content: flex-end;
}

.btn-surprise {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  background: #111827;
  color: #FFFFFF;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-ui);
  transition: opacity 0.15s;
}
.btn-surprise:hover { opacity: 0.85; }

.btn-compare {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  background: transparent;
  color: var(--chrome-text);
  border: 1px solid var(--chrome-border);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-ui);
  transition: all 0.15s;
}
.btn-compare:hover { background: var(--chrome-hover); }
.btn-compare.active { background: var(--chrome-active); color: var(--chrome-active-text); border-color: var(--chrome-active); }

/* ── APP LAYOUT ──────────────────────────────────────────── */
.app-layout {
  display: flex;
  height: calc(100vh - var(--topbar-height) - var(--toolbar-height));
  margin-top: var(--topbar-height);
  overflow: hidden;
}

/* ── STYLES DRAWER ───────────────────────────────────────── */
.styles-drawer {
  width: var(--drawer-width);
  background: var(--chrome-bg);
  border-right: 1px solid var(--chrome-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
  transition: width 0.25s ease, opacity 0.25s ease;
}
.styles-drawer.collapsed {
  width: 0;
  opacity: 0;
  overflow: hidden;
}

.drawer-header {
  padding: 10px;
  border-bottom: 1px solid var(--chrome-border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.drawer-search-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #F9FAFB;
  border: 1px solid var(--chrome-border);
  border-radius: 6px;
  padding: 6px 10px;
}
.drawer-search-wrap svg { color: var(--chrome-muted); flex-shrink: 0; }
.drawer-search-wrap input {
  border: none;
  background: transparent;
  font-size: 13px;
  color: var(--chrome-text);
  width: 100%;
  outline: none;
  font-family: var(--font-ui);
}
.drawer-search-wrap input::placeholder { color: var(--chrome-muted); }

.drawer-industry-filter select {
  width: 100%;
  padding: 5px 8px;
  border: 1px solid var(--chrome-border);
  border-radius: 6px;
  font-size: 12px;
  background: #F9FAFB;
  color: var(--chrome-text);
  font-family: var(--font-ui);
  cursor: pointer;
  outline: none;
}

.drawer-styles-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  scrollbar-width: thin;
  scrollbar-color: #E5E7EB transparent;
}
.drawer-styles-list::-webkit-scrollbar { width: 4px; }
.drawer-styles-list::-webkit-scrollbar-track { background: transparent; }
.drawer-styles-list::-webkit-scrollbar-thumb { background: #E5E7EB; border-radius: 2px; }

.style-category-group { margin-bottom: 8px; }

.style-category-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--chrome-muted);
  padding: 6px 8px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.style-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 7px 8px;
  border: none;
  background: transparent;
  border-radius: 6px;
  font-size: 13px;
  color: var(--chrome-text);
  cursor: pointer;
  font-family: var(--font-ui);
  text-align: left;
  transition: background 0.1s;
  gap: 4px;
}
.style-btn:hover { background: var(--chrome-hover); }
.style-btn.active {
  background: var(--chrome-active);
  color: var(--chrome-active-text);
  font-weight: 600;
}
.style-btn-name { flex: 1; }
.style-btn-fav {
  font-size: 12px;
  opacity: 0.4;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0 2px;
  color: inherit;
  transition: opacity 0.15s;
}
.style-btn-fav:hover, .style-btn-fav.active { opacity: 1; }
.style-btn-fav.active { color: #F59E0B; }

/* ── PREVIEW AREA ────────────────────────────────────────── */
.preview-area {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: #F3F4F6;
}

.preview-single {
  width: 100%;
  height: 100%;
}
.preview-single iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.preview-compare {
  display: flex;
  width: 100%;
  height: 100%;
  gap: 0;
}
.preview-compare.hidden { display: none; }

.compare-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.compare-pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  background: var(--chrome-bg);
  border-bottom: 1px solid var(--chrome-border);
  gap: 8px;
}
.compare-style-select {
  flex: 1;
  padding: 4px 8px;
  border: 1px solid var(--chrome-border);
  border-radius: 5px;
  font-size: 12px;
  font-family: var(--font-ui);
  background: #F9FAFB;
  color: var(--chrome-text);
  cursor: pointer;
  outline: none;
}
.compare-mode-toggle {
  display: flex;
  gap: 2px;
}
.compare-pane iframe {
  flex: 1;
  border: none;
  width: 100%;
}
.compare-divider {
  width: 3px;
  background: var(--chrome-border);
  flex-shrink: 0;
}

/* ── FLOATING TOOLBAR ────────────────────────────────────── */
.floating-toolbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--toolbar-height);
  background: #FFFFFF;
  border-top: 1px solid var(--chrome-border);
  z-index: 900;
  overflow: hidden;
}

.toolbar-inner {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 12px;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.toolbar-inner::-webkit-scrollbar { display: none; }

.toolbar-divider {
  width: 1px;
  height: 36px;
  background: var(--chrome-border);
  flex-shrink: 0;
  margin: 0 10px;
}

.toolbar-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex-shrink: 0;
}

.toolbar-label {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--chrome-muted);
}

.toolbar-style-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 120px;
  flex-shrink: 0;
}
.toolbar-style-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--chrome-text);
  white-space: nowrap;
}
.toolbar-style-cat {
  font-size: 10px;
  color: var(--chrome-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Mode toggle */
.mode-toggle-wrap {
  display: flex;
  gap: 2px;
  background: #F3F4F6;
  border: 1px solid var(--chrome-border);
  border-radius: 6px;
  padding: 2px;
}
.mode-toggle-btn {
  padding: 3px 8px;
  border: none;
  background: transparent;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  font-family: var(--font-ui);
  transition: all 0.15s;
  color: var(--chrome-muted);
}
.mode-toggle-btn.active {
  background: #FFFFFF;
  color: var(--chrome-text);
  box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

/* Color pickers */
.color-pickers-row {
  display: flex;
  gap: 6px;
  align-items: center;
}
.color-swatch-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  cursor: pointer;
}
.color-swatch-wrap label {
  font-size: 9px;
  font-weight: 700;
  color: var(--chrome-muted);
  text-transform: uppercase;
  cursor: pointer;
}
.color-swatch-wrap input[type="color"] {
  width: 28px;
  height: 28px;
  border: 2px solid var(--chrome-border);
  border-radius: 6px;
  padding: 1px;
  cursor: pointer;
  background: none;
}
.color-swatch-wrap input[type="color"]:hover { border-color: var(--chrome-text); }
.color-label {
  font-size: 8px;
  color: var(--chrome-muted);
  white-space: nowrap;
}

/* Background controls */
.bg-control { display: flex; flex-direction: column; gap: 4px; }
.bg-type-toggle {
  display: flex;
  gap: 2px;
  background: #F3F4F6;
  border: 1px solid var(--chrome-border);
  border-radius: 5px;
  padding: 2px;
}
.bg-type-btn {
  padding: 2px 8px;
  border: none;
  background: transparent;
  border-radius: 3px;
  font-size: 11px;
  cursor: pointer;
  font-family: var(--font-ui);
  color: var(--chrome-muted);
  transition: all 0.15s;
}
.bg-type-btn.active {
  background: #FFFFFF;
  color: var(--chrome-text);
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}
.bg-solid-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}
.bg-solid-controls input[type="color"] {
  width: 28px;
  height: 22px;
  border: 2px solid var(--chrome-border);
  border-radius: 4px;
  padding: 1px;
  cursor: pointer;
  background: none;
}
.bg-presets {
  display: flex;
  gap: 3px;
}
.bg-preset-swatch {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 1.5px solid rgba(0,0,0,0.1);
  cursor: pointer;
  transition: transform 0.1s;
}
.bg-preset-swatch:hover { transform: scale(1.2); }

.bg-gradient-controls {
  display: flex;
  align-items: center;
  gap: 4px;
}
.bg-gradient-controls input[type="color"] {
  width: 24px;
  height: 22px;
  border: 2px solid var(--chrome-border);
  border-radius: 4px;
  padding: 1px;
  cursor: pointer;
  background: none;
}
.bg-gradient-controls span {
  font-size: 12px;
  color: var(--chrome-muted);
}
.bg-gradient-controls select {
  padding: 2px 4px;
  border: 1px solid var(--chrome-border);
  border-radius: 4px;
  font-size: 11px;
  font-family: var(--font-ui);
  background: #F9FAFB;
  cursor: pointer;
  outline: none;
}

/* Font selects */
.font-selects-row {
  display: flex;
  gap: 6px;
}
.font-select-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.font-select-label {
  font-size: 9px;
  color: var(--chrome-muted);
}
.font-select {
  padding: 3px 6px;
  border: 1px solid var(--chrome-border);
  border-radius: 5px;
  font-size: 13px;
  background: #F9FAFB;
  color: var(--chrome-text);
  cursor: pointer;
  outline: none;
  min-width: 160px;
  max-width: 200px;
  font-weight: 500;
}

/* Tuning controls */
.tuning-controls {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.tuning-row {
  display: flex;
  align-items: center;
  gap: 6px;
}
.tuning-label {
  font-size: 10px;
  color: var(--chrome-muted);
  width: 42px;
  flex-shrink: 0;
}
.tuning-slider {
  width: 80px;
  height: 3px;
  accent-color: var(--chrome-active);
  cursor: pointer;
}
.tuning-val {
  font-size: 10px;
  color: var(--chrome-muted);
  width: 28px;
  text-align: right;
}

/* Border toggle */
.border-toggle {
  display: flex;
  gap: 2px;
  background: #F3F4F6;
  border: 1px solid var(--chrome-border);
  border-radius: 5px;
  padding: 2px;
}
.border-btn {
  padding: 2px 6px;
  border: none;
  background: transparent;
  border-radius: 3px;
  font-size: 10px;
  cursor: pointer;
  font-family: var(--font-ui);
  color: var(--chrome-muted);
  transition: all 0.15s;
}
.border-btn.active {
  background: #FFFFFF;
  color: var(--chrome-text);
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}

/* Copy buttons */
.toolbar-copy-group {
  flex-direction: row !important;
  gap: 6px !important;
  align-items: center !important;
}
.copy-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-ui);
  white-space: nowrap;
  transition: opacity 0.15s;
}
.copy-btn:hover { opacity: 0.85; }
.copy-prompt {
  background: #111827;
  color: #FFFFFF;
}
.copy-tailwind {
  background: #374151;
  color: #FFFFFF;
}

/* ── STYLE DNA PANEL ─────────────────────────────────────── */
.dna-panel {
  position: fixed;
  top: var(--topbar-height);
  right: 0;
  width: 320px;
  height: calc(100vh - var(--topbar-height) - var(--toolbar-height));
  background: #FFFFFF;
  border-left: 1px solid var(--chrome-border);
  z-index: 800;
  overflow-y: auto;
  transform: translateX(0);
  transition: transform 0.25s ease;
  box-shadow: -4px 0 20px rgba(0,0,0,0.08);
}
.dna-panel.hidden { transform: translateX(100%); }

.dna-panel-inner { padding: 20px; }
.dna-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--chrome-muted);
  line-height: 1;
}
.dna-close:hover { color: var(--chrome-text); }

.dna-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  padding-right: 24px;
}
.dna-description {
  font-size: 13px;
  line-height: 1.6;
  color: #4B5563;
  margin-bottom: 16px;
}

.dna-rules {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.dna-rule {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: #F9FAFB;
  border-radius: 6px;
  border: 1px solid var(--chrome-border);
}
.dna-rule-label { font-size: 12px; color: var(--chrome-muted); }
.dna-rule-value { font-size: 12px; font-weight: 600; color: var(--chrome-text); }

.dna-accessibility {
  margin-bottom: 16px;
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid var(--chrome-border);
}
.dna-accessibility h4 { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--chrome-muted); margin-bottom: 8px; }
.contrast-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  margin: 2px;
}
.contrast-badge.pass-aaa { background: #DCFCE7; color: #166534; }
.contrast-badge.pass-aa { background: #FEF9C3; color: #854D0E; }
.contrast-badge.fail { background: #FEE2E2; color: #991B1B; }

.dna-palettes h4 { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--chrome-muted); margin-bottom: 10px; }
.dna-palette-grid { display: flex; flex-direction: column; gap: 8px; }
.dna-palette-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--chrome-border);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.1s;
}
.dna-palette-item:hover { background: #F9FAFB; }
.dna-palette-swatches { display: flex; gap: 3px; }
.dna-palette-swatch {
  width: 18px;
  height: 18px;
  border-radius: 3px;
  border: 1px solid rgba(0,0,0,0.1);
}
.dna-palette-name { font-size: 12px; font-weight: 500; }

/* ── DNA TRIGGER ─────────────────────────────────────────── */
.dna-trigger {
  position: fixed;
  right: 16px;
  bottom: calc(var(--toolbar-height) + 12px);
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 7px 12px;
  background: #FFFFFF;
  border: 1px solid var(--chrome-border);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--chrome-text);
  cursor: pointer;
  font-family: var(--font-ui);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  z-index: 850;
  transition: all 0.15s;
}
.dna-trigger:hover { background: var(--chrome-hover); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }

/* ── MODE BUTTONS (compare) ──────────────────────────────── */
.mode-btn {
  padding: 3px 8px;
  border: 1px solid var(--chrome-border);
  background: transparent;
  border-radius: 4px;
  font-size: 11px;
  cursor: pointer;
  font-family: var(--font-ui);
  color: var(--chrome-muted);
  transition: all 0.15s;
}
.mode-btn.active {
  background: var(--chrome-active);
  color: var(--chrome-active-text);
  border-color: var(--chrome-active);
}

/* ── TOAST ───────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: calc(var(--toolbar-height) + 16px);
  left: 50%;
  transform: translateX(-50%);
  background: #111827;
  color: #FFFFFF;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  z-index: 2000;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  transition: opacity 0.3s;
}
.toast.hidden { opacity: 0; pointer-events: none; }

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

/* Scrollbar for drawer */
* { scrollbar-width: thin; scrollbar-color: #E5E7EB transparent; }
*::-webkit-scrollbar { width: 5px; height: 5px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: #E5E7EB; border-radius: 3px; }

/* ── RESPONSIVE (added 2026-08-06 — the app previously had zero media queries)
   Codex finding: a fixed header that wraps to a variable number of rows can't
   pair with a fixed pixel offset. At narrow widths the whole shell becomes a
   normal flex column instead — header height is then always correct. */
@media (max-width: 900px) {
  body { display: flex; flex-direction: column; }

  /* Top bar in normal flow, wrapping so the page-type tabs stay reachable */
  .top-bar {
    position: static;
    flex-wrap: wrap;
    height: auto;
    min-height: var(--topbar-height);
    padding: 6px 10px;
    row-gap: 4px;
  }
  .top-bar-left, .top-bar-right { min-width: 0; }
  .top-bar-center {
    order: 3;
    flex-basis: 100%;
    justify-content: flex-start;
  }

  .app-layout {
    margin-top: 0;
    flex: 1;
    min-height: 0;
    height: auto;
    position: relative;
  }

  /* Drawer overlays the preview instead of squeezing it to half width */
  .styles-drawer {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 950;
    box-shadow: 4px 0 20px rgba(0,0,0,0.12);
  }

  .floating-toolbar { position: static; height: auto; }
  .toolbar-inner { height: var(--toolbar-height); }

  /* Compare panes stack vertically — side-by-side is unusable at phone width */
  .preview-compare { flex-direction: column; }
  .compare-divider { width: 100%; height: 3px; }
}