/* =============================================
   FixPDF — Portfolio-aligned theme
   Uses the same design language as mathieulebourhis.com
   ============================================= */

/* ── CSS Custom Properties (portfolio-inspired) ── */
:root {
  --color-bg:           #ffffff;
  --color-bg-alt:       #f4f5f7;
  --color-bg-dark:      #0f172a;
  --color-bg-dark-alt:  #1e293b;
  --color-text:         #1e293b;
  --color-text-muted:   #64748b;
  --color-text-light:   #e2e8f0;
  --color-text-light-muted: #94a3b8;
  --color-accent:       #6366f1;
  --color-accent-hover: #4f46e5;
  --color-accent-subtle: rgba(99, 102, 241, 0.08);
  --color-border:       #e2e8f0;
  --color-border-dark:  #334155;
  --color-success:      #10b981;
  --color-danger:       #ef4444;
  --color-danger-bg:    rgba(239, 68, 68, 0.08);
  --font-sans:          'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:          'JetBrains Mono', 'Fira Code', monospace;
  --max-width:          1140px;
  --radius:             10px;
  --radius-sm:          6px;
  --transition:         0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --navbar-h:           56px;
  --shadow-sm:          0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md:          0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg:          0 8px 40px rgba(0, 0, 0, 0.1);
}

/* ── Dark theme ── */
[data-theme="dark"] {
  --color-bg:           #0f172a;
  --color-bg-alt:       #1e293b;
  --color-text:         #e2e8f0;
  --color-text-muted:   #94a3b8;
  --color-border:       #334155;
  --color-accent-subtle: rgba(99, 102, 241, 0.12);
  --shadow-sm:          0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md:          0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg:          0 8px 40px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition), color var(--transition);
}

/* ── Screens ── */
.screen { display: none; }
.screen.active { display: block; }

/* ── NAVBAR ── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: var(--navbar-h);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background var(--transition), border-color var(--transition);
}

[data-theme="dark"] .navbar {
  background: rgba(15, 23, 42, 0.88);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav-logo {
  color: var(--color-accent);
  font-size: 1.2rem;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-tagline {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* Theme toggle */
.theme-toggle {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.9rem;
  transition: border-color var(--transition), background var(--transition);
  padding: 0;
  line-height: 1;
}

.theme-toggle:hover {
  border-color: var(--color-accent);
}

[data-theme="dark"] .icon-sun { display: inline; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: inline; }

/* Language switcher */
.lang-switcher {
  display: flex;
  gap: 2px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px;
  transition: border-color var(--transition), background var(--transition);
}

.lang-btn {
  width: 30px;
  height: 26px;
  border: none;
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
  padding: 0;
  line-height: 1;
}

.lang-btn:hover { background: var(--color-accent-subtle); }

/* ── HERO / UPLOAD SCREEN ── */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 2rem 3rem;
  text-align: center;
}

/* Badge */
.hero-badge-group {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Internship card */
.internship-card {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: left;
  margin-bottom: 2rem;
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.internship-card:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.internship-avatar { font-size: 1.5rem; }

.internship-body {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.internship-headline {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
}

.internship-detail {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.internship-cta {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* Heading */
.hero h1 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.hero .highlight {
  color: var(--color-accent);
}

.hero-sub {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* Trust bar */
.trust-bar {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  padding: 0.75rem 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.trust-icon { font-size: 1rem; }

/* ── DROP ZONE ── */
.drop-zone {
  max-width: 500px;
  margin: 0 auto 3rem;
  padding: 2.5rem 2rem;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-alt);
  transition: all var(--transition);
  cursor: pointer;
}

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

.drop-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.drop-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.3rem;
}

.drop-sub {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.5rem;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

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

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.btn-ghost.small {
  padding: 0.35rem 0.7rem;
  font-size: 0.75rem;
}

.btn-ghost:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── FEATURE GRID ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  max-width: 900px;
  margin: 0 auto 3rem;
}

.feature-card {
  padding: 1.4rem 1.2rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: left;
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.feature-card.accent {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.feature-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.feature-icon {
  font-size: 1.2rem;
  width: 1.6rem;
  text-align: center;
}

.feature-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
}

.feature-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ── SEO Content Blocks ── */
.seo-content-block {
  max-width: 720px;
  margin: 0 auto 2.5rem;
  text-align: left;
  padding: 1.5rem 1.5rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.seo-h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.seo-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Use case grid inside SEO blocks */
.usecase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.usecase-card {
  padding: 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition);
}

.usecase-card:hover {
  border-color: var(--color-accent);
}

.usecase-icon {
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
}

.usecase-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.3rem;
}

.usecase-desc {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* FAQ */
.faq-section { text-align: left; }

.faq-item {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child { border-bottom: none; }

.faq-q {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color var(--transition);
}

.faq-q:hover { color: var(--color-accent); }

.faq-q::before {
  content: '+';
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-accent);
  flex-shrink: 0;
}

.faq-item.open .faq-q::before { content: '−'; }

.faq-a {
  display: none;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  padding-top: 0.5rem;
  padding-left: 1.5rem;
}

.faq-item.open .faq-a { display: block; }

/* SEO Footer */
.seo-footer {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  max-width: 400px;
  margin: 0 auto;
}

.seo-footer-text {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.seo-footer-text a {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
  transition: color var(--transition);
}

.seo-footer-text a:hover { color: var(--color-accent-hover); }

/* =============================================
   EDITOR SCREEN
   ============================================= */
#editor-screen.screen.active {
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--navbar-h));
}

/* Top bar */
.editor-topbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1.5rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  transition: background var(--transition), border-color var(--transition);
}

.editor-filename {
  flex: 1;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.editor-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.edit-counter {
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 600;
  white-space: nowrap;
}

/* Toolbar */
.editor-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.35rem 1.5rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  gap: 0.5rem;
  flex-wrap: wrap;
  transition: background var(--transition), border-color var(--transition);
}

.toolbar-hint {
  font-size: 0.73rem;
  color: var(--color-text-muted);
  flex: 1;
}

.toolbar-tools {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.zoom-btn {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  width: 28px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
  font-weight: 600;
  padding: 0;
  line-height: 1;
}

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

#zoom-level,
#page-info {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  min-width: 40px;
  text-align: center;
  font-weight: 500;
}

.add-text-btn {
  width: auto;
  padding: 0 0.6rem;
  font-size: 0.73rem;
  font-weight: 500;
  white-space: nowrap;
}

.add-text-btn.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.toolbar-sep {
  width: 1px;
  height: 18px;
  background: var(--color-border);
  flex-shrink: 0;
}

/* ── Global document bar ── */
.global-bar {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 1.5rem;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  flex-wrap: wrap;
  transition: background var(--transition), border-color var(--transition);
}

.global-bar-label {
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
  margin-right: 0.2rem;
  flex-shrink: 0;
}

.global-color-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  color: var(--color-text-muted);
  cursor: pointer;
  user-select: none;
}

.global-color-toggle input[type="checkbox"] {
  accent-color: var(--color-accent);
  width: 12px;
  height: 12px;
  cursor: pointer;
}

.btn-global-apply {
  margin-left: auto;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0 0.7rem;
  height: 26px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
  flex-shrink: 0;
}

.btn-global-apply:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
  transform: translateY(-1px);
}

.btn-global-apply:active { transform: scale(0.97); }

/* ── Typography bar ── */
.typo-bar {
  display: none;
  align-items: center;
  gap: 0.3rem;
  padding: 0.35rem 1.5rem;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  flex-wrap: wrap;
  animation: typoBarSlide 0.2s ease-out;
  transition: background var(--transition), border-color var(--transition);
}

@keyframes typoBarSlide {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.typo-bar.visible { display: flex; }

.typo-select, .typo-size {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  font-size: 0.76rem;
  height: 26px;
  outline: none;
  font-family: var(--font-sans);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.typo-select { min-width: 110px; }
.typo-size { width: 54px; text-align: center; }

.typo-select:focus, .typo-size:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-subtle);
}

.typo-btn {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  width: 26px;
  height: 26px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  transition: all var(--transition);
  padding: 0;
  flex-shrink: 0;
  line-height: 1;
}

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

.typo-btn:active { transform: scale(0.95); }

.typo-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.typo-divider {
  width: 1px;
  height: 18px;
  background: var(--color-border);
  margin: 0 2px;
  flex-shrink: 0;
}

.typo-color-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.typo-color-swatch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-weight: 900;
  font-size: 0.95rem;
  cursor: pointer;
  color: #000;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  transition: border-color var(--transition);
  user-select: none;
}

.typo-color-swatch:hover { border-color: var(--color-accent); }

#typo-color,
#global-color {
  position: absolute;
  width: 0; height: 0;
  opacity: 0;
  pointer-events: none;
}

#global-color-swatch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-weight: 900;
  font-size: 0.95rem;
  cursor: pointer;
  color: #000;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  transition: border-color var(--transition);
  user-select: none;
}

#global-color-swatch:hover { border-color: var(--color-accent); }

/* Canvas Wrapper */
.editor-canvas-wrapper {
  flex: 1;
  overflow: auto;
  background: var(--color-bg-alt);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 2rem;
  transition: background var(--transition);
}

.pdf-outer {
  position: relative;
  display: inline-block;
  box-shadow: var(--shadow-lg);
  border-radius: 4px;
  background: #fff;
  user-select: none;
  overflow: hidden;
}

#pdf-canvas { display: block; }

/* ── Text overlay ── */
.text-overlay {
  position: absolute;
  top: 0; left: 0;
  pointer-events: none;
  overflow: visible;
}

.text-zone {
  position: absolute;
  cursor: text;
  pointer-events: all;
  border-radius: 2px;
  transition: background var(--transition), outline var(--transition);
}

.text-zone:hover {
  background: var(--color-accent-subtle);
  outline: 1.5px solid rgba(99, 102, 241, 0.5);
  z-index: 10;
}

.text-zone.edited {
  background: rgba(16, 185, 129, 0.1);
  outline: 1.5px solid rgba(16, 185, 129, 0.5);
}

.text-zone.edited:hover { background: rgba(16, 185, 129, 0.2); }

.text-zone.erased {
  background: rgba(239, 68, 68, 0.1);
  outline: 1.5px dashed rgba(239, 68, 68, 0.5);
}

.text-zone.erased:hover { background: rgba(239, 68, 68, 0.2); }

/* Danger button */
.typo-btn.danger:hover {
  border-color: var(--color-danger);
  color: var(--color-danger);
  background: var(--color-danger-bg);
}

/* ── Inline editor ── */
.inline-editor {
  position: absolute;
  z-index: 20;
  background: #fff;
  border: none;
  border-bottom: 2px solid var(--color-accent);
  outline: none;
  padding: 0 2px;
  margin: 0;
  line-height: 1.2;
  color: #1a1a2e;
  white-space: nowrap;
  min-width: 40px;
  box-shadow: 0 2px 0 0 var(--color-accent);
  caret-color: var(--color-accent);
  animation: inputAppear 0.15s ease-out;
}

@keyframes inputAppear {
  from { opacity: 0; transform: scaleY(0.95); }
  to   { opacity: 1; transform: scaleY(1); }
}

/* =============================================
   TOAST
   ============================================= */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--color-success);
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.6em 1.4em;
  border-radius: 999px;
  z-index: 999;
  opacity: 0;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.35s ease;
  pointer-events: none;
  white-space: nowrap;
  box-shadow: var(--shadow-md);
}

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

.toast.error {
  background: var(--color-danger);
}

/* =============================================
   FULL-SCREEN LOADING
   ============================================= */
.fullscreen-loading {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 500;
  gap: 1rem;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: loadingFade 0.2s ease-out;
}

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

.spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.fullscreen-loading p {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  animation: loadingPulse 1.5s ease-in-out infinite;
}

@keyframes loadingPulse {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}

/* =============================================
   SCROLLBAR
   ============================================= */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 640px) {
  .hero { padding: 2rem 1rem 2rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .nav-tagline { display: none; }
  .editor-toolbar { flex-direction: column; align-items: flex-start; }
  .toolbar-tools { flex-wrap: wrap; }
  .editor-topbar {
    padding: 0.4rem 1rem;
    gap: 0.4rem;
  }
  .editor-filename { font-size: 0.78rem; }
  .edit-counter { font-size: 0.68rem; }
  .btn-ghost.small { font-size: 0.68rem; padding: 0.3em 0.5em; }
  .lang-btn { width: 28px; height: 24px; font-size: 0.9rem; }
  .trust-bar { gap: 0.6rem; padding: 0.6rem 0.8rem; flex-wrap: wrap; }
  .usecase-grid { grid-template-columns: 1fr; }
  .navbar { padding: 0 1rem; }
  .editor-toolbar, .global-bar, .typo-bar { padding-left: 1rem; padding-right: 1rem; }
}

@media (max-width: 420px) {
  .navbar { padding: 0 0.75rem; }
  .theme-toggle { width: 30px; height: 30px; font-size: 0.85rem; }
  .lang-btn { width: 26px; height: 22px; font-size: 0.8rem; }
}