/* ============================================================
   AI Consultancy NZ — styles.css
   Mobile-first. All design tokens in :root.
   Sections labeled clearly throughout.
   ============================================================ */


/* === ANIMATIONS === */

/* Hero entrance — fires on page load, no scroll needed.
   Each hero element fades up in sequence via delay classes. */
@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-anim {
  opacity: 0;
  animation: heroFadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-anim--1 { animation-delay: 0.1s; }
.hero-anim--2 { animation-delay: 0.25s; }
.hero-anim--3 { animation-delay: 0.45s; }
.hero-anim--4 { animation-delay: 0.65s; }

/* Scroll-triggered animation base state.
   Elements with [data-animate] start hidden.
   IntersectionObserver adds .is-visible to trigger the entrance. */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger containers — children animate in sequence.
   Applied by IntersectionObserver via JS. */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

[data-stagger] > *.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Section headings — fade in when in view */
[data-fade] {
  opacity: 0;
  transition: opacity 0.7s ease;
}

[data-fade].is-visible {
  opacity: 1;
}

/* Respect user preference for reduced motion */
@media (prefers-reduced-motion: reduce) {
  [data-animate],
  [data-stagger] > *,
  [data-fade],
  .hero-anim {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
    transition: none !important;
  }
}


/* === RESET & BASE === */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}


/* === DESIGN TOKENS === */

:root {
  /* Colors */
  --color-bg: #ffffff;
  --color-text: #000000;
  --color-text-secondary: #555555;
  --color-border: #e5e5e5;
  --color-accent: #0057FF;
  --color-accent-hover: #0040CC;
  --color-button-text: #ffffff;
  --color-surface: #f8f8f8;

  /* Typography */
  --font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --text-hero: clamp(2.2rem, 5vw, 3.5rem);
  --text-h2: clamp(1.6rem, 3vw, 2.25rem);
  --text-h3: 1.25rem;
  --text-body: 1.0625rem;
  --text-small: 0.875rem;
  --leading-body: 1.75;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --max-width: 960px;
  --section-padding: clamp(3rem, 8vw, 6rem);
}


/* === UTILITY CLASSES === */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

.section {
  padding: var(--section-padding) 0;
}

.section--alt {
  background-color: var(--color-surface);
}

/* Primary button — electric blue CTA */
.btn {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-button-text);
  font-family: var(--font-base);
  font-size: var(--text-body);
  font-weight: 600;
  padding: 14px 28px;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease;
  min-height: 48px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
}

.btn:hover {
  background-color: var(--color-accent-hover);
  text-decoration: none;
  color: var(--color-button-text);
}

/* Secondary button — black outline */
.btn--secondary {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-text);
}

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

/* Section label — small uppercase eyebrow text */
.section-label {
  display: block;
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

/* Section heading */
.section-heading {
  font-size: var(--text-h2);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  max-width: 640px;
}

/* Card base */
.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 2rem;
  transition: border-color 0.15s ease;
}

.card:hover {
  border-color: #999;
}


/* === NAVIGATION === */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav__logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  text-decoration: none;
}

.nav__logo:hover {
  color: var(--color-text);
  text-decoration: none;
}

/* Mobile nav links — hidden by default */
.nav__links {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 60px;
  left: 0;
  right: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) 0;
}

.nav__links.is-open {
  display: flex;
}

.nav__links a {
  display: block;
  padding: 12px var(--space-sm);
  color: var(--color-text);
  font-size: var(--text-body);
  font-weight: 500;
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.nav__links a:hover {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
  text-decoration: none;
}

/* Hamburger button */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Hamburger → X animation */
.nav__hamburger.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.nav__hamburger.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}


/* === HERO === */

.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.hero__content {
  max-width: 700px;
}

.hero__headline {
  font-size: var(--text-hero);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.hero__sub {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
  max-width: 560px;
}

.hero__cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
}

.hero__scroll-hint {
  margin-top: var(--space-xl);
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}


/* === ERA SECTION (The Pattern) === */

.era {
  border-bottom: 1px solid var(--color-border);
}

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

.era__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.era__card {
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  border-left-width: 3px;
  border-left-color: var(--color-border);
  transition: border-color 0.15s ease;
}

/* Highlight the 2020 AI era card — subtle pulse glow on the accent border */
@keyframes accentPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 87, 255, 0); }
  50%       { box-shadow: 0 0 16px 2px rgba(0, 87, 255, 0.12); }
}

.era__card--current {
  border-left-color: var(--color-accent);
  animation: accentPulse 3s ease-in-out infinite;
}

.era__card--current .era__decade {
  color: var(--color-accent);
}

.era__card:hover {
  border-color: #999;
  border-left-color: var(--color-accent);
  transform: translateY(-2px);
  transition: border-color 0.15s ease, transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.era__decade {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.era__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.era__desc {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.era__closing {
  font-size: 1.125rem;
  font-weight: 600;
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-sm);
  max-width: 640px;
}


/* === PROBLEM SECTION === */

.problem {
  border-bottom: 1px solid var(--color-border);
}

.problem__statements {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.problem__item {
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.problem__lead {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.problem__body {
  color: var(--color-text-secondary);
  line-height: 1.7;
}


/* === SERVICES === */

.services {
  border-bottom: 1px solid var(--color-border);
}

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.services__card {
  padding: 2rem;
  border: 1px solid var(--color-border);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.services__card:hover {
  border-color: #999;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transform: translateY(-3px);
}

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

.services__title {
  font-size: var(--text-h3);
  font-weight: 700;
  margin-bottom: 0.625rem;
}

.services__desc {
  color: var(--color-text-secondary);
  font-size: var(--text-body);
  line-height: 1.7;
}


/* === HOW IT WORKS === */

.how {
  border-bottom: 1px solid var(--color-border);
}

.how__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

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

.how__number {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  min-width: 56px;
  letter-spacing: -0.03em;
  opacity: 0.15;
}

.how__content {
  padding-top: 0.5rem;
}

.how__step-title {
  font-size: var(--text-h3);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.how__step-desc {
  color: var(--color-text-secondary);
  line-height: 1.7;
}


/* === ABOUT === */

.about {
  border-bottom: 1px solid var(--color-border);
}

.about__inner {
  max-width: 680px;
}

.about__bio {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-top: var(--space-md);
}

.about__bio + .about__bio {
  margin-top: var(--space-sm);
}

.about__credential {
  display: inline-block;
  margin-top: var(--space-md);
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  padding: 6px 14px;
  border-radius: 2px;
}


/* === BLOG PREVIEW === */

.blog-preview {
  border-bottom: 1px solid var(--color-border);
}

.blog-preview__intro {
  color: var(--color-text-secondary);
  margin-top: var(--space-sm);
  max-width: 560px;
}

.blog-preview__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.blog-preview__card {
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.blog-preview__card:hover {
  border-color: #999;
  text-decoration: none;
  transform: translateY(-3px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
}

.blog-preview__meta {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.blog-preview__tag {
  background-color: var(--color-surface);
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.blog-preview__title {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 0.625rem;
}

.blog-preview__excerpt {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-sm);
}

.blog-preview__read {
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}

.blog-preview__read:hover {
  text-decoration: underline;
}

.blog-preview__cta {
  margin-top: var(--space-md);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-body);
}

.blog-preview__cta:hover {
  color: var(--color-accent);
  text-decoration: none;
}


/* === NEWSLETTER SIGNUP === */

.newsletter {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.newsletter__inner {
  max-width: 560px;
}

.newsletter__heading {
  font-size: var(--text-h2);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-xs);
}

.newsletter__sub {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.newsletter__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.newsletter__input {
  font-family: var(--font-base);
  font-size: var(--text-body);
  padding: 13px 16px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  background-color: var(--color-bg);
  color: var(--color-text);
  width: 100%;
  min-height: 48px;
  outline: none;
  transition: border-color 0.15s ease;
}

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

.newsletter__input::placeholder {
  color: #aaa;
}

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

.newsletter__privacy {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

.newsletter__success {
  display: none;
  font-weight: 600;
  color: var(--color-text);
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  background-color: var(--color-bg);
}


/* === CONTACT / FINAL CTA === */

.contact {
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.contact__heading {
  font-size: var(--text-h2);
  font-weight: 700;
  margin-bottom: var(--space-md);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.contact__email {
  display: block;
  margin-top: var(--space-sm);
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}

.contact__email a {
  color: var(--color-text-secondary);
  text-decoration: underline;
}

.contact__email a:hover {
  color: var(--color-accent);
}


/* === FOOTER === */

.footer {
  padding: var(--space-lg) 0;
}

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

.footer__brand {
  font-weight: 700;
  font-size: var(--text-body);
  color: var(--color-text);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer__nav a {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  text-decoration: none;
}

.footer__nav a:hover {
  color: var(--color-text);
  text-decoration: none;
}

.footer__copy {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}


/* ============================================================
   BLOG INDEX PAGE
   ============================================================ */

.blog-index {
  border-bottom: 1px solid var(--color-border);
}

.blog-index__header {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-lg);
}

.blog-index__heading {
  font-size: var(--text-h2);
  font-weight: 800;
  margin-bottom: var(--space-xs);
}

.blog-index__sub {
  color: var(--color-text-secondary);
  max-width: 560px;
}

.blog-index__list {
  display: flex;
  flex-direction: column;
}

.blog-index__entry {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.blog-index__entry-meta {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.625rem;
}

.blog-index__tag {
  background-color: var(--color-surface);
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
}

.blog-index__entry-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.625rem;
}

.blog-index__entry-title a {
  color: var(--color-text);
  text-decoration: none;
}

.blog-index__entry-title a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.blog-index__excerpt {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
  max-width: 680px;
}

.blog-index__read {
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--color-accent);
}

.blog-index__read:hover {
  text-decoration: underline;
}


/* ============================================================
   BLOG POST ARTICLE
   ============================================================ */

.post {
  padding: var(--space-xl) 0;
}

.post__back {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-bottom: var(--space-lg);
  transition: color 0.15s ease;
}

.post__back:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.post__header {
  max-width: 680px;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.post__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.post__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.post__meta {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}

.post__body {
  max-width: 680px;
}

/* Post body typography */
.post__body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.post__body h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.post__body p {
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

.post__body ul,
.post__body ol {
  margin-bottom: var(--space-sm);
  padding-left: var(--space-md);
  list-style: disc;
}

.post__body ol {
  list-style: decimal;
}

.post__body li {
  margin-bottom: 0.375rem;
  line-height: 1.7;
}

.post__body blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-sm);
  margin: var(--space-md) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

.post__body code {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.875em;
  background-color: var(--color-surface);
  padding: 2px 6px;
  border-radius: 2px;
  border: 1px solid var(--color-border);
}

.post__body pre {
  background-color: #1a1a1a;
  color: #e5e5e5;
  padding: var(--space-md);
  border-radius: 4px;
  overflow-x: auto;
  margin: var(--space-md) 0;
  font-size: 0.875rem;
  line-height: 1.6;
}

.post__body pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
}

.post__body strong {
  font-weight: 700;
}

/* Post footer */
.post__footer {
  max-width: 680px;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

/* Compact newsletter signup within blog post */
.post-newsletter {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
  border-left: 3px solid var(--color-accent);
}

.post-newsletter__heading {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
}

.post-newsletter__sub {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.post-newsletter__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.post-newsletter__input {
  font-family: var(--font-base);
  font-size: var(--text-body);
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 44px;
  outline: none;
}

.post-newsletter__input:focus {
  border-color: var(--color-accent);
}

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

.post-newsletter__success {
  display: none;
  font-weight: 600;
  color: var(--color-text);
  font-size: var(--text-small);
  padding: 0.75rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
}


/* ============================================================
   RESPONSIVE — 480px+
   ============================================================ */

@media (min-width: 480px) {
  .newsletter__form {
    flex-direction: row;
  }

  .newsletter__input {
    flex: 1;
  }

  .newsletter__btn {
    width: auto;
    flex-shrink: 0;
  }

  .post-newsletter__form {
    flex-direction: row;
  }

  .post-newsletter__input {
    flex: 1;
  }

  .post-newsletter__btn {
    width: auto;
    flex-shrink: 0;
  }
}


/* ============================================================
   RESPONSIVE — 768px+ (Tablet)
   ============================================================ */

@media (min-width: 768px) {
  /* Nav — show inline links, hide hamburger */
  .nav__hamburger {
    display: none;
  }

  .nav__links {
    display: flex !important;
    flex-direction: row;
    position: static;
    background: none;
    border: none;
    padding: 0;
    gap: var(--space-md);
  }

  .nav__links a {
    padding: 0;
    border-left: none;
    font-size: var(--text-small);
  }

  .nav__links a:hover {
    border-left: none;
  }

  /* Era grid — 2x2 on tablet */
  .era__grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Services — 2x2 grid */
  .services__grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Blog preview — 2 cols on tablet */
  .blog-preview__grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Footer — inline */
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
  }
}


/* ============================================================
   RESPONSIVE — 1024px+ (Desktop)
   ============================================================ */

@media (min-width: 1024px) {
  /* Era grid — 4 columns */
  .era__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  /* How It Works — 3 columns */
  .how__steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .how__step {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .how__number {
    font-size: 4rem;
    min-width: auto;
  }

  .how__content {
    padding-top: 0;
  }

  /* Blog preview — 3 columns */
  .blog-preview__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Problem statements — 3 columns */
  .problem__statements {
    grid-template-columns: repeat(3, 1fr);
  }
}


/* ============================================================
   RESPONSIVE — 1280px+ (Wide)
   ============================================================ */

@media (min-width: 1280px) {
  .container {
    padding: 0 var(--space-md);
  }
}