/* ==========================================================================
   Asymmetric — Typography & Color System
   High-trust, calm reading experience
   
   DESIGN PRINCIPLES:
   - UI should disappear while reading
   - Trust and readability over visual flair
   - Monochrome palette, single muted accent
   - Inter font only
   ========================================================================== */

/* --------------------------------------------------------------------------
   Inter Font Import (400, 500, 600)
   -------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

/* --------------------------------------------------------------------------
   CSS Variables — Locked Design System
   -------------------------------------------------------------------------- */
:root {
  /* ==========================================================================
     COLOR SYSTEM (Monochrome + Single Accent)
     ========================================================================== */
  
  /* Backgrounds — Deep charcoal, not pure black */
  --bg-base: #0a0a0b;
  --bg-elevated: #101012;
  --bg-surface: #161618;
  --bg-surface-hover: #1c1c1f;
  
  /* Text — Off-white for reduced eye strain */
  --text-primary: #e8e8e8;
  --text-secondary: #9a9a9a;
  --text-muted: #666666;
  --text-ad-label: #4a4a4a; /* Even more muted for ad labels */
  
  /* Borders — Very low contrast */
  --border-subtle: rgba(255, 255, 255, 0.04);
  --border-default: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.10);
  
  /* Accent — Single color, cool and desaturated */
  /* Used sparingly: progress, hover states, subtle highlights */
  --accent: #6b7280;
  --accent-hover: #9ca3af;
  --accent-muted: rgba(107, 114, 128, 0.12);
  
  /* Accent Warm — Muted orange for numeric emphasis */
  /* Used for: dollar amounts, user counts, durations, percentages */
  --accent-warm: #c9956a;
  
  /* ==========================================================================
     TYPOGRAPHY SYSTEM (Inter Only)
     ========================================================================== */
  
  /* Font Family */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Font Weights */
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  
  /* Font Sizes — Mobile-first */
  --text-xs: 0.75rem;      /* 12px - ad labels, meta */
  --text-sm: 0.8125rem;    /* 13px - UI labels */
  --text-base: 1rem;       /* 16px - mobile body */
  --text-body: 1.0625rem;  /* 17px - tablet body */
  --text-lg: 1.125rem;     /* 18px - desktop body */
  --text-xl: 1.25rem;      /* 20px - small headings */
  --text-2xl: 1.5rem;      /* 24px - slide titles mobile */
  --text-3xl: 1.75rem;     /* 28px - slide titles desktop */
  
  /* Line Heights */
  --leading-tight: 1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;
  
  /* Content Width — Optimal reading measure (60-70ch) */
  --content-width: 38rem;  /* ~608px, approx 65ch at 17px */
  
  /* ==========================================================================
     SPACING SYSTEM
     ========================================================================== */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* ==========================================================================
     LAYOUT
     ========================================================================== */
  --header-height: 56px;
  --nav-height: 68px;
  --page-width: 1000px;
  
  /* Radii — Subtle, not playful */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  
  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 120ms;
  --duration-normal: 200ms;
}

/* --------------------------------------------------------------------------
   Desktop Typography Adjustments
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  :root {
    --text-body: 1.125rem;  /* 18px body on desktop */
    --text-2xl: 1.625rem;   /* 26px */
    --text-3xl: 1.875rem;   /* 30px */
    --content-width: 40rem; /* ~640px */
  }
}

/* ==========================================================================
   RESET & BASE
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: var(--font-regular);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
}

/* No decorative gradients — clean background only */

h1, h2, h3, h4 {
  margin: 0;
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

p {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

[hidden] {
  display: none !important;
}

/* ==========================================================================
   LAYOUT
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ==========================================================================
   HEADER / NAV
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border-subtle);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wordmark {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  letter-spacing: -0.02em;
  color: var(--text-primary);
  transition: opacity var(--duration-fast) ease;
}

.wordmark:hover {
  opacity: 0.7;
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-muted);
  transition: color var(--duration-fast) ease;
}

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

/* ==========================================================================
   HOMEPAGE — HERO
   ========================================================================== */
.hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
}

.hero h1 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  line-height: var(--leading-tight);
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: var(--text-3xl);
  }
}

.hero-sub {
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  color: var(--text-secondary);
  max-width: 32rem;
  margin: 0 auto var(--space-xl);
  line-height: var(--leading-relaxed);
}

.hero-cta {
  margin-top: var(--space-lg);
}

/* Remove decorative artifacts — clean design */
.hero-artifact,
.hero-artifact-lines,
.spotlight {
  display: none;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.625rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) ease;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-base);
}

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

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
}

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

/* ==========================================================================
   STORY LIST
   ========================================================================== */
.story-section {
  padding: var(--space-xl) 0 var(--space-3xl);
}

.section-header {
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

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

.story-card {
  display: block;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: border-color var(--duration-fast) ease;
}

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

.story-card h3 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  line-height: var(--leading-tight);
}

.story-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.story-tag {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  background: var(--bg-surface-hover);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
}

.story-meta {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.story-summary {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  margin-top: var(--space-sm);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border-subtle);
}

.site-footer p {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-align: center;
}

.site-footer a {
  color: var(--text-muted);
  transition: color var(--duration-fast) ease;
}

.site-footer a:hover {
  color: var(--text-secondary);
}

/* ==========================================================================
   EXIT PAGE
   
   Calm, intentional session end. One screen, one ad, soft return link.
   ========================================================================== */
.exit-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.exit-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) var(--space-lg);
}

.exit-content {
  max-width: var(--content-width);
  width: 100%;
  text-align: center;
}

.exit-closure {
  font-size: var(--text-xl);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.exit-about {
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 28rem;
  margin: 0 auto var(--space-2xl);
}

.exit-ad-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-2xl);
}

.exit-ad-wrap .ad-label {
  margin-bottom: var(--space-sm);
}

.exit-ad-wrap .ad-frame {
  width: 100%;
  max-width: 320px;
  height: 100px;
}

.exit-return {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: var(--font-regular);
  color: var(--text-muted);
  transition: color var(--duration-fast) ease;
}

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

/* ==========================================================================
   STORY READER PAGE
   ========================================================================== */
.story-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Reader Header */
.reader-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border-subtle);
}

.reader-header .container {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-md);
}

.reader-header .wordmark {
  font-size: var(--text-sm);
}

.story-title-header {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-muted);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 var(--space-md);
}

.progress-indicator {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* Reader Main */
.reader-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding-bottom: var(--nav-height);
}

/* Loading State */
.reader-loading {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  color: var(--text-muted);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border-default);
  border-top-color: var(--text-muted);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Error State */
.reader-error {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl);
}

.reader-error h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

.reader-error p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.error-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   SLIDE CONTENT — Optimized for Reading
   ========================================================================== */
.reader-content {
  flex: 1;
  padding: var(--space-xl) var(--space-lg);
}

.slide {
  max-width: var(--content-width);
  margin: 0 auto;
}

.slide-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  line-height: var(--leading-tight);
  transition: font-size var(--duration-normal) ease;
}

@media (min-width: 768px) {
  .slide-title {
    font-size: var(--text-3xl);
  }
}

/* Compact title for slides 2+ */
.slide--compact .slide-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

@media (min-width: 768px) {
  .slide--compact .slide-title {
    font-size: var(--text-2xl);
  }
}

/* ==========================================================================
   STORY METADATA STRIP
   
   - Slide 1: Full display — signals authority and scale
   - Slides 2+: Compact display — maintains context without dominating
   ========================================================================== */
.story-meta-strip {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--duration-normal) ease;
}

.story-meta-strip .meta-line {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  transition: font-size var(--duration-normal) ease;
}

.story-meta-strip .meta-type {
  font-weight: var(--font-medium);
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.01em;
}

.story-meta-strip .meta-impact {
  font-weight: var(--font-regular);
  color: var(--text-secondary);
}

.story-meta-strip .meta-impact .num {
  color: var(--accent-warm);
  font-weight: var(--font-medium);
}

/* --------------------------------------------------------------------------
   Compact metadata strip (Slides 2+)
   Quieter presentation, same content, same orange numbers
   -------------------------------------------------------------------------- */
.slide--compact .story-meta-strip {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
}

.slide--compact .story-meta-strip .meta-line {
  font-size: var(--text-xs);
}

.slide--compact .story-meta-strip .meta-type {
  margin-bottom: 0;
}

.slide--compact .story-meta-strip .meta-type::after {
  content: '·';
  margin-left: var(--space-md);
  color: var(--text-muted);
}

.slide--compact .story-meta-strip .meta-impact {
  color: var(--text-muted);
}

/* Orange numbers stay orange — semantic, not decorative */
.slide--compact .story-meta-strip .meta-impact .num {
  color: var(--accent-warm);
}

/* ==========================================================================
   NUMERIC ACCENT
   
   Muted warm orange for significant numbers.
   Applied to: dollar amounts, user counts, time durations, percentages.
   NOT applied to: navigation counters, pagination.
   ========================================================================== */
.num {
  color: var(--accent-warm);
  font-weight: inherit;
  font-variant-numeric: tabular-nums;
}

/* Image area */
.slide-image-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-xl);
}

.slide-image-wrap[data-empty="true"] {
  display: none;
}

.slide-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Body text — Optimized reading */
.slide-body {
  font-size: var(--text-body);
  font-weight: var(--font-regular);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
}

.slide-body p {
  margin-bottom: var(--space-lg);
}

.slide-body p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   READER NAVIGATION (Fixed Footer)
   ========================================================================== */
.reader-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-base);
  border-top: 1px solid var(--border-subtle);
  z-index: 100;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) ease;
  min-width: 88px;
  justify-content: center;
}

.nav-btn:hover:not(:disabled) {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.nav-btn-primary {
  position: relative;
  overflow: hidden;
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: var(--bg-base);
}

.nav-btn-primary:hover:not(:disabled) {
  background: var(--text-secondary);
  border-color: var(--text-secondary);
}

/* ==========================================================================
   NEXT BUTTON SHIMMER
   
   BEHAVIOR:
   - Triggers ONLY on idle (4s inactivity)
   - Max 1 per slide, max 3 per session
   - Disabled under prefers-reduced-motion
   - Subtle diagonal glint, not clickbait
   ========================================================================== */

/* Shimmer pseudo-element (hidden by default) */
.nav-btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  /* Glint effect: narrow bright band with soft dark edges */
  background: linear-gradient(
    110deg,
    transparent 0%,
    transparent 35%,
    rgba(0, 0, 0, 0.12) 42%,
    rgba(255, 255, 255, 0.6) 50%,
    rgba(0, 0, 0, 0.12) 58%,
    transparent 65%,
    transparent 100%
  );
  transform: translateX(-150%);
  pointer-events: none;
  border-radius: inherit;
  opacity: 0;
  z-index: 1;
}

/* Active shimmer state — triggered by JS */
.nav-btn-primary.shimmer::after {
  opacity: 1;
  animation: shimmer-sweep 2s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}

@keyframes shimmer-sweep {
  0% {
    transform: translateX(-150%);
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    transform: translateX(150%);
    opacity: 0;
  }
}

/* Accessibility: Disable shimmer for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  .nav-btn-primary::after {
    display: none;
  }
  
  .nav-btn-primary.shimmer::after {
    animation: none;
    opacity: 0;
  }
}

.nav-counter {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.nav-arrow {
  font-size: var(--text-sm);
}

/* ==========================================================================
   EXIT FLOW (Final Slide)
   
   Replaces nav on final slide. Provides clear next action or graceful exit.
   - No dead-ends
   - No disabled buttons
   - Calm handoff, not a funnel shove
   ========================================================================== */
.reader-exit {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-base);
  border-top: 1px solid var(--border-subtle);
  z-index: 100;
  padding: var(--space-lg) var(--space-lg) var(--space-xl);
}

.exit-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  max-width: var(--content-width);
  margin: 0 auto;
}

/* Primary CTA: Another Incident */
.exit-btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 280px;
  padding: 0.875rem 1.5rem;
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--bg-base);
  background: var(--text-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) ease;
}

.exit-btn-primary:hover {
  background: var(--text-secondary);
}

/* Secondary CTA: Come back later */
.exit-btn-secondary {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
  font-weight: var(--font-regular);
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color var(--duration-fast) ease;
}

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

/* Adjust body padding when exit flow is visible */
.story-page.at-end .reader-main {
  padding-bottom: 120px;
}

/* ==========================================================================
   AD FRAMES
   
   POLICY:
   - Ads are guests inside content, never the host
   - Labels should be barely noticeable
   - No disruption to reading flow
   ========================================================================== */

.ad-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  width: 100%;
  height: 90px;
}

.ad-frame[data-show-placeholder="true"] {
  border-style: dashed;
  background: var(--bg-elevated);
}

.ad-frame[data-show-placeholder="true"]::before {
  content: 'Ad';
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-ad-label);
}

.ad-frame:empty:not([data-show-placeholder="true"]) {
  display: none;
}

/* Ad label — Extremely muted */
.ad-label {
  display: block;
  font-size: 0.5625rem;
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-ad-label);
  margin-bottom: var(--space-xs);
  text-align: center;
}

/* Ad divider */
.ad-divider {
  width: 48px;
  height: 1px;
  background: var(--border-subtle);
  margin: var(--space-sm) auto;
}

/* Ad frame wrapper */
.ad-frame-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

/* Mid-slide insert */
.ad-frame-mid_slide_insert {
  margin: var(--space-xl) 0;
  padding: var(--space-md) 0;
}

.ad-frame-mid_slide_insert .ad-frame {
  height: 90px;
}

/* Footer ad */
.ad-frame-story_end_footer {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
}

.ad-frame-story_end_footer .ad-frame {
  height: 90px;
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}