/* ============================================================
   NexyStar — Global Design System
   Ocean Blue Light Theme · Editorial Typography
   Inspired by the vastness of sea and sky
   ============================================================ */

/* ----------------------------------------------------
   1. Design Tokens
   ---------------------------------------------------- */
:root {
  /* Color Palette — Ocean Blue Light Theme */
  --color-bg-primary: #e6f0f8;
  --color-bg-secondary: #ecf4fb;
  --color-bg-tertiary: #dce8f3;
  --color-surface: #ffffff;
  --color-surface-hover: #f2f7fc;
  --color-border: rgba(13, 34, 55, 0.07);
  --color-border-hover: rgba(13, 34, 55, 0.14);
  --color-text-primary: #132235;
  --color-text-secondary: rgba(19, 34, 53, 0.6);
  --color-text-tertiary: rgba(19, 34, 53, 0.38);
  --color-accent: #1a7aa8;
  --color-accent-hover: #15638b;
  --color-accent-subtle: rgba(26, 122, 168, 0.08);

  /* Card shadow — subtle depth on light surfaces */
  --shadow-card: 0 1px 3px rgba(13, 34, 55, 0.06), 0 1px 2px rgba(13, 34, 55, 0.04);
  --shadow-card-hover: 0 4px 16px rgba(13, 34, 55, 0.08), 0 2px 4px rgba(13, 34, 55, 0.04);
  --shadow-nav: 0 1px 3px rgba(13, 34, 55, 0.06);

  /* Typography */
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* Type Scale (minor third) */
  --text-xs: clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.84rem + 0.18vw, 0.9375rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1.06rem + 0.33vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.35rem + 0.75vw, 2rem);
  --text-3xl: clamp(2rem, 1.7rem + 1.5vw, 3rem);
  --text-4xl: clamp(2.5rem, 2rem + 2.5vw, 4rem);
  --text-5xl: clamp(3rem, 2.3rem + 3.5vw, 5.5rem);

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  --space-section: clamp(4rem, 3rem + 5vw, 8rem);

  /* Layout */
  --content-max-width: 1200px;
  --content-narrow: 800px;
  --nav-height: 4rem;

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: none;
  border: none;
}

input, textarea, select {
  font: inherit;
  color: inherit;
}

/* Selection */
::selection {
  background: var(--color-accent);
  color: white;
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ----------------------------------------------------
   3. Typography
   ---------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

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

.text-accent {
  color: var(--color-accent);
}

.text-serif {
  font-family: var(--font-serif);
}

.text-muted {
  color: var(--color-text-tertiary);
}

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

.text-lg {
  font-size: var(--text-lg);
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ----------------------------------------------------
   4. Layout Utilities
   ---------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--content-max-width);
  margin-inline: auto;
  padding-inline: var(--space-xl);
}

.container--narrow {
  max-width: var(--content-narrow);
}

.section {
  padding-block: var(--space-section);
}

.section--tight {
  padding-block: var(--space-3xl);
}

.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.gap-2xl { gap: var(--space-2xl); }

/* ----------------------------------------------------
   5. Navigation
   ---------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background-color var(--duration-normal) var(--ease-out-expo),
              box-shadow var(--duration-normal) var(--ease-out-expo);
}

.nav--scrolled {
  background-color: rgba(230, 240, 248, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-nav);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  transition: opacity var(--duration-fast);
}

.nav__logo:hover {
  opacity: 0.8;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.nav__link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  position: relative;
  padding-block: var(--space-xs);
  transition: color var(--duration-fast);
  letter-spacing: 0.01em;
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-text-primary);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--duration-normal) var(--ease-out-expo);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

/* Mobile menu toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-xs);
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-text-primary);
  transition: transform var(--duration-normal) var(--ease-out-expo),
              opacity var(--duration-fast);
}

/* ----------------------------------------------------
   6. Hero Section
   ---------------------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
}

.hero__content {
  max-width: 800px;
}

.hero__eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-xl);
}

.hero__title {
  font-size: var(--text-5xl);
  line-height: 1.05;
  margin-bottom: var(--space-xl);
  letter-spacing: -0.03em;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: var(--space-2xl);
}

/* ----------------------------------------------------
   7. Buttons
   ---------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out-expo);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(26, 122, 168, 0.28);
}

.btn--ghost {
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-border-hover);
  background: rgba(13, 34, 55, 0.04);
}

.btn--lg {
  font-size: var(--text-base);
  padding: 0.875rem 2.25rem;
}

/* ----------------------------------------------------
   8. Cards
   ---------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-card);
  transition: border-color var(--duration-normal),
              background-color var(--duration-normal),
              box-shadow var(--duration-normal),
              transform var(--duration-normal) var(--ease-out-expo);
}

.card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-surface-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.card__icon {
  font-size: 1.75rem;
  margin-bottom: var(--space-lg);
  display: block;
}

.card__title {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}

.card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* Blog card */
.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color var(--duration-normal),
              background-color var(--duration-normal),
              box-shadow var(--duration-normal),
              transform var(--duration-normal) var(--ease-out-expo);
}

.blog-card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-surface-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.blog-card__image {
  aspect-ratio: 16 / 9;
  background: var(--color-bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
  overflow: hidden;
}

.blog-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card__body {
  padding: var(--space-xl);
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-sm);
}

.blog-card__tag {
  display: inline-block;
  font-size: var(--text-xs);
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  padding: 0.2em 0.75em;
  border-radius: var(--radius-full);
  font-weight: 500;
}

.blog-card__title {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}

.blog-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ----------------------------------------------------
   9. Stats Section
   ---------------------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.stat {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.stat__number {
  font-family: var(--font-serif);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.stat__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* ----------------------------------------------------
   10. Section Headers
   ---------------------------------------------------- */
.section-header {
  margin-bottom: var(--space-3xl);
}

.section-header__eyebrow {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.section-header__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-md);
}

.section-header__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 560px;
}

.section-header--center {
  text-align: center;
}

.section-header--center .section-header__text {
  margin-inline: auto;
}

/* ----------------------------------------------------
   11. Timeline (About page)
   ---------------------------------------------------- */
.timeline {
  position: relative;
  padding-left: var(--space-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--color-border);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-2xl);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-2xl) - 4px);
  top: 4px;
  width: 9px;
  height: 9px;
  background: var(--color-accent);
  border-radius: 50%;
}

.timeline__year {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.timeline__title {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.timeline__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* ----------------------------------------------------
   12. Forms
   ---------------------------------------------------- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--text-sm);
  transition: border-color var(--duration-fast),
              box-shadow var(--duration-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

.form-input--error,
.form-textarea--error {
  border-color: #ef4444;
}

.form-error {
  font-size: var(--text-xs);
  color: #ef4444;
  margin-top: var(--space-xs);
  display: none;
}

.form-error--visible {
  display: block;
}

.form-success {
  display: none;
  padding: var(--space-lg);
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-md);
  color: #22c55e;
  font-size: var(--text-sm);
  text-align: center;
}

.form-success--visible {
  display: block;
}

/* ----------------------------------------------------
   13. Tags / Pills (Blog)
   ---------------------------------------------------- */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 0.35em 1em;
  border-radius: var(--radius-full);
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.tag:hover,
.tag--active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* ----------------------------------------------------
   14. CTA Section
   ---------------------------------------------------- */
.cta {
  text-align: center;
  padding: var(--space-5xl) var(--space-xl);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.cta__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-md);
}

.cta__text {
  color: var(--color-text-secondary);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}

/* ----------------------------------------------------
   15. Footer
   ---------------------------------------------------- */
.footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-3xl);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer__brand {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 700;
}

.footer__links {
  display: flex;
  gap: var(--space-2xl);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--duration-fast);
}

.footer__link:hover {
  color: var(--color-text-primary);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

/* ----------------------------------------------------
   16. About Page Specific
   ---------------------------------------------------- */
.about-hero {
  padding-top: calc(var(--nav-height) + var(--space-4xl));
  padding-bottom: var(--space-3xl);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.value-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: border-color var(--duration-normal),
              background-color var(--duration-normal),
              box-shadow var(--duration-normal);
}

.value-card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-surface-hover);
  box-shadow: var(--shadow-card-hover);
}

.value-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-lg);
}

.value-card__title {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.value-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ----------------------------------------------------
   17. Contact Page Specific
   ---------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact-info__title {
  font-family: var(--font-sans);
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

.contact-info__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-info__item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.contact-info__icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-info__label {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-xs);
}

.contact-info__value {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

/* ----------------------------------------------------
   18. Page Header (shared across inner pages)
   ---------------------------------------------------- */
.page-header {
  padding-top: calc(var(--nav-height) + var(--space-4xl));
  padding-bottom: var(--space-3xl);
}

.page-header__eyebrow {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.page-header__title {
  max-width: 720px;
}

/* ----------------------------------------------------
   19. Scroll Animations
   ---------------------------------------------------- */
.animate {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
}

.animate--visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.animate--stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
}

.animate--stagger.animate--visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.animate--stagger.animate--visible > *:nth-child(2) { transition-delay: 100ms; opacity: 1; transform: translateY(0); }
.animate--stagger.animate--visible > *:nth-child(3) { transition-delay: 200ms; opacity: 1; transform: translateY(0); }
.animate--stagger.animate--visible > *:nth-child(4) { transition-delay: 300ms; opacity: 1; transform: translateY(0); }
.animate--stagger.animate--visible > *:nth-child(5) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }
.animate--stagger.animate--visible > *:nth-child(6) { transition-delay: 500ms; opacity: 1; transform: translateY(0); }

/* ----------------------------------------------------
   20. Responsive
   ---------------------------------------------------- */
@media (max-width: 1024px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
  }

  .hero__title {
    font-size: var(--text-4xl);
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 3.5rem;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .values-grid {
    grid-template-columns: 1fr;
  }

  .stats {
    grid-template-columns: 1fr 1fr;
  }

  /* Mobile navigation */
  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(75vw, 320px);
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-xl);
    padding: var(--space-3xl);
    background: var(--color-bg-secondary);
    border-left: 1px solid var(--color-border);
    transition: right var(--duration-normal) var(--ease-in-out);
  }

  .nav__links--open {
    right: 0;
  }

  .nav__link {
    font-size: var(--text-lg);
  }

  .nav__toggle {
    display: flex;
    position: relative;
    z-index: 101;
  }

  /* Hamburger animation */
  .nav__toggle--open span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }

  .nav__toggle--open span:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle--open span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }

  /* Mobile overlay */
  .nav__overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 99;
  }

  .nav__overlay--visible {
    display: block;
  }

  .hero__title {
    font-size: var(--text-3xl);
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__links {
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .container {
    padding-inline: var(--space-lg);
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .hero__title {
    font-size: var(--text-2xl);
  }
}

/* ----------------------------------------------------
   21. Reduced Motion
   ---------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .animate,
  .animate--stagger > * {
    opacity: 1;
    transform: none;
  }
}

/* ----------------------------------------------------
   22. Utility: Screen Reader Only
   ---------------------------------------------------- */
.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;
}