/* ============================================================
   Andra Learn — Design System
   Swap brand values in :root below when assets are provided.
   ============================================================ */

:root {
  /* Brand colors — replace these when brand palette is provided */
  --color-ink: #111111;
  --color-bg: #ffffff;
  --color-warm-gray: #f4f2ee;
  --color-warm-gray-2: #e7e3dc;
  --color-muted: #6b6862;
  --color-accent: #cc2229; /* brand red from logo */
  --color-accent-dark: #7d1116; /* deep red from logo gradient */

  /* Typography — swap font-family when brand font is licensed */
  --font-sans: "Inter", "Neue Montreal", "Söhne", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  /* Scale */
  --maxw: 1280px;
  --gutter: clamp(1.25rem, 4vw, 4rem);
  --radius-pill: 999px;
  --radius-lg: 20px;

  /* Fluid type */
  --fs-hero: clamp(2rem, 8vw, 7.5rem);
  --fs-h2: clamp(2rem, 4.5vw, 3.5rem);
  --fs-h3: clamp(1.35rem, 2.2vw, 1.9rem);
  --fs-body: clamp(1rem, 1.15vw, 1.2rem);
  --fs-lead: clamp(1.15rem, 1.6vw, 1.5rem);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.55;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(4rem, 9vw, 8rem);
}

.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

/* Inline red highlight for key words in headlines/body */
.accent {
  color: var(--color-accent);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 1rem 2rem;
  background: var(--color-ink);
  color: #fff;
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  background: #000;
}

.btn--ghost {
  background: transparent;
  color: var(--color-ink);
}

.btn--ghost:hover {
  background: var(--color-ink);
  color: #fff;
}

.btn .arrow {
  transition: transform 0.2s ease;
}

.btn:hover .arrow {
  transform: translateX(3px);
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--color-warm-gray-2);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.brand img {
  height: 32px;
  width: 32px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2.25rem);
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  color: var(--color-muted);
  transition: color 0.15s ease;
}

.nav-links a:hover {
  color: var(--color-ink);
}

.nav-links a[aria-current="page"] {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.hero__content {
  max-width: 42ch;
}

.hero h1 {
  font-size: var(--fs-hero);
  line-height: 0.98;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin-bottom: 1.5rem;
  overflow-wrap: normal;
  hyphens: none;
}

/* Slightly smaller cap for headlines with long words (e.g. "Procurement") */
.hero h1.hero__title--tight {
  font-size: clamp(2rem, 6vw, 5.5rem);
}

.hero__sub {
  font-size: var(--fs-lead);
  color: var(--color-muted);
  margin-bottom: 2.25rem;
  max-width: 40ch;
}

.hero__media {
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-warm-gray);
}

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

/* ---------- Media placeholder ---------- */
.media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-warm-gray);
  aspect-ratio: 4 / 3;
}

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

.media[data-placeholder]::after {
  content: attr(data-placeholder);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--color-muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  padding: 1rem;
}

/* ---------- Section headings ---------- */
.section-head {
  max-width: 46ch;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.section-head h2 {
  font-size: var(--fs-h2);
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.section-head p {
  margin-top: 1.1rem;
  color: var(--color-muted);
  font-size: var(--fs-lead);
}

/* ---------- Split rows (alternating image/text) ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.split + .split {
  margin-top: clamp(3rem, 6vw, 5.5rem);
}

.split--reverse .split__media {
  order: -1;
}

.split__body h2 {
  font-size: var(--fs-h2);
  line-height: 1.03;
  letter-spacing: -0.02em;
  margin-bottom: 1.1rem;
}

.split__body p {
  color: var(--color-muted);
  font-size: var(--fs-lead);
  max-width: 44ch;
}

.split__body .btn {
  margin-top: 1.75rem;
}

/* ---------- Card grid (home blocks / pillars) ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.25rem, 2.5vw, 2rem);
}

.card {
  display: flex;
  flex-direction: column;
  padding: clamp(1.75rem, 2.5vw, 2.5rem);
  background: var(--color-warm-gray);
  border-radius: var(--radius-lg);
  min-height: 100%;
  transition: transform 0.25s ease, background 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  background: var(--color-warm-gray-2);
}

.card h3 {
  font-size: var(--fs-h3);
  letter-spacing: -0.01em;
  margin-bottom: 0.85rem;
}

.card p {
  color: var(--color-muted);
  margin-bottom: 1.75rem;
}

.card .card__link {
  margin-top: auto;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
}

.card .card__link .arrow {
  color: var(--color-accent);
}

.card .card__link .arrow {
  transition: transform 0.2s ease;
}

.card:hover .card__link .arrow {
  transform: translateX(4px);
}

/* ---------- Steps (numbered process) ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
  counter-reset: step;
}

.step {
  padding-top: 1.5rem;
  border-top: 2px solid var(--color-accent);
}

.step__num {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.step h3 {
  font-size: var(--fs-h3);
  margin-bottom: 0.6rem;
}

.step p {
  color: var(--color-muted);
}

/* ---------- Banner CTA ---------- */
.cta-banner {
  background: var(--color-ink);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 6vw, 5rem);
  text-align: center;
}

.cta-banner h2 {
  font-size: var(--fs-h2);
  letter-spacing: -0.02em;
  margin-bottom: 1.75rem;
  max-width: 20ch;
  margin-inline: auto;
}

.cta-banner .btn {
  background: #fff;
  color: var(--color-ink);
  border-color: #fff;
}

.cta-banner .btn:hover {
  background: var(--color-warm-gray);
}

/* ---------- Contact form ---------- */
.form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 1.75rem;
  max-width: 720px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.field input,
.field textarea {
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-ink);
  padding: 0.9rem 1rem;
  border: 1px solid var(--color-warm-gray-2);
  border-radius: 12px;
  background: var(--color-bg);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-ink);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-ink) 12%, transparent);
}

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

.form__actions {
  grid-column: 1 / -1;
}

.form__note {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.form-status {
  grid-column: 1 / -1;
  padding: 1rem 1.25rem;
  border-radius: 12px;
  background: var(--color-warm-gray);
  font-size: 0.95rem;
  display: none;
}

.form-status.is-visible {
  display: block;
}

.form-status.is-error {
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-warm-gray));
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-warm-gray-2);
  padding-block: clamp(2.5rem, 5vw, 4rem);
  margin-top: clamp(3rem, 7vw, 6rem);
}

.footer-cta {
  font-size: var(--fs-h3);
  letter-spacing: -0.01em;
  margin-bottom: 2.5rem;
  max-width: 24ch;
}

.footer-cta a {
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 2px;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  justify-content: space-between;
  align-items: flex-end;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 1.75rem;
  list-style: none;
}

.footer-links a {
  color: var(--color-muted);
}

.footer-links a:hover {
  color: var(--color-ink);
}

.footer-meta {
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-meta a {
  color: var(--color-ink);
}

/* ---------- Reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero,
  .split,
  .cards,
  .steps {
    grid-template-columns: 1fr;
  }

  .hero__media {
    aspect-ratio: 16 / 10;
    order: -1;
  }

  .split--reverse .split__media {
    order: 0;
  }

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

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    inset: 64px 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-warm-gray-2);
    padding: 1rem var(--gutter) 1.5rem;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
  }

  .nav-links.is-open {
    transform: translateY(0);
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 0.85rem 0;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--color-warm-gray);
    width: 100%;
  }

  .nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}