/* ==========================================================================
   NookDesign — style.css
   Brand colors & typography per nook_brandmanual.pdf
   ========================================================================== */

:root {
  /* Brand palette (RGB values from the brand manual) */
  --midnight-blue: #142828;   /* RGB 20 40 40   */
  --sky-blue:      #d7e1e1;   /* RGB 215 225 225 */
  --walnut-brown:  #877869;   /* RGB 135 120 105 */
  --storm-cloud:   #a5a5a5;   /* RGB 165 165 165 */
  --fresh-cream:   #f0e6dc;   /* RGB 240 230 220 */
  --forest-green:  #5f6e5a;   /* RGB 95 110 90   */

  --cream-light:   #f7f1ea;
  --ink:           var(--midnight-blue);
  --ink-soft:      rgba(20, 40, 40, 0.72);

  --font: "Syne", "Segoe UI", Arial, sans-serif;

  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 2px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.7;
  color: var(--ink);
  background: var(--fresh-cream);
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol { list-style: none; }

/* ---------- Typography ---------- */

h1, h2, h3 { font-weight: 600; line-height: 1.15; letter-spacing: -0.01em; }

.display {
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  font-weight: 700;
}

.section-title {
  font-size: clamp(1.9rem, 4vw, 3rem);
  max-width: 18ch;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--forest-green);
  margin-bottom: 1.1rem;
}

.lead {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 56ch;
}

/* ---------- Layout helpers ---------- */

.container {
  width: min(var(--container), 100% - 2 * var(--gutter));
  margin-inline: auto;
}

section { padding-block: clamp(4.5rem, 10vw, 8.5rem); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.95rem 2.2rem;
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease);
  cursor: pointer;
}

.btn-solid {
  background: var(--midnight-blue);
  border-color: var(--midnight-blue);
  color: var(--fresh-cream);
}

.btn-solid:hover {
  background: var(--forest-green);
  border-color: var(--forest-green);
}

.btn-outline-light { color: var(--fresh-cream); }

.btn-outline-light:hover {
  background: var(--fresh-cream);
  color: var(--midnight-blue);
}

.btn-outline-dark { color: var(--midnight-blue); }

.btn-outline-dark:hover {
  background: var(--midnight-blue);
  color: var(--fresh-cream);
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.site-header.scrolled {
  background: rgba(240, 230, 220, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(20, 40, 40, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1.1rem;
}

.brand img {
  height: 26px;
  width: auto;
  transition: opacity 0.4s var(--ease);
}

/* swap wordmark color while hero (dark photo) is behind the header */
.brand .logo-dark { display: none; }
.brand .logo-light { display: block; }

.site-header.scrolled .brand .logo-dark { display: block; }
.site-header.scrolled .brand .logo-light { display: none; }

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.2rem, 2.5vw, 2.4rem);
}

.main-nav a {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fresh-cream);
  position: relative;
  padding-block: 0.3rem;
  transition: color 0.3s var(--ease);
}

.site-header.scrolled .main-nav a { color: var(--midnight-blue); }

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

.main-nav a:hover::after { transform: scaleX(1); }

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--fresh-cream);
  transition: color 0.3s var(--ease);
}

.site-header.scrolled .lang-switch { color: var(--midnight-blue); }

.lang-switch .sep { opacity: 0.4; }

.lang-switch a { opacity: 0.55; transition: opacity 0.3s var(--ease); }

.lang-switch a:hover { opacity: 1; }

.lang-switch .active { opacity: 1; }

/* Mobile nav toggle */

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: 0;
  padding: 0.4rem;
  cursor: pointer;
}

.nav-toggle span {
  width: 26px;
  height: 2px;
  background: var(--fresh-cream);
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease), background-color 0.3s var(--ease);
}

.site-header.scrolled .nav-toggle span,
.site-header.nav-open .nav-toggle span { background: var(--midnight-blue); }

.site-header.nav-open .nav-toggle span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.site-header.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.site-header.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding: 0;
  isolation: isolate;
  color: var(--fresh-cream);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

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

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    to top,
    rgba(20, 40, 40, 0.78) 0%,
    rgba(20, 40, 40, 0.35) 45%,
    rgba(20, 40, 40, 0.25) 100%
  );
}

.hero-content {
  padding-block: clamp(5rem, 12vh, 8rem);
}

.hero .eyebrow { color: var(--sky-blue); }

.hero h1 { max-width: 16ch; color: #fff; }

.hero .lead {
  color: rgba(240, 230, 220, 0.85);
  margin-top: 1.6rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.6rem;
}

.hero-scroll {
  position: absolute;
  right: var(--gutter);
  bottom: 2.2rem;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(240, 230, 220, 0.7);
  writing-mode: vertical-rl;
}

/* ---------- Philosophy ---------- */

.philosophy { background: var(--fresh-cream); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
}

.split-media {
  position: relative;
}

.split-media .img-main {
  width: 88%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius);
}

.split-media .img-accent {
  position: absolute;
  right: 0;
  bottom: -3rem;
  width: 45%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border: 8px solid var(--fresh-cream);
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(20, 40, 40, 0.18);
}

.split-text p + p { margin-top: 1.1rem; }

.split-text .section-title { margin-bottom: 1.6rem; }

.values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.2rem, 3vw, 2.5rem);
  margin-top: clamp(3.5rem, 8vw, 6rem);
}

.value-card {
  background: var(--cream-light);
  border-top: 2px solid var(--forest-green);
  padding: 2rem 1.8rem;
  border-radius: var(--radius);
}

.value-card h3 { font-size: 1.1rem; margin-bottom: 0.7rem; }

.value-card p { font-size: 0.95rem; color: var(--ink-soft); }

.nook-note {
  margin-top: clamp(3rem, 7vw, 5rem);
  text-align: center;
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 500;
  color: var(--walnut-brown);
  font-style: normal;
}

.nook-note strong { color: var(--forest-green); font-weight: 700; }

/* ---------- Process ---------- */

.process {
  background: var(--midnight-blue);
  color: var(--fresh-cream);
}

.process .eyebrow { color: var(--sky-blue); }

.process .lead { color: rgba(240, 230, 220, 0.75); }

.process-head {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  margin-bottom: clamp(3rem, 7vw, 5.5rem);
}

.process-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.process-media {
  position: sticky;
  top: 7rem;
}

.process-media img {
  aspect-ratio: 3 / 4;
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}

.process-media figcaption {
  margin-top: 0.9rem;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--storm-cloud);
}

.steps { counter-reset: step; display: grid; gap: clamp(2rem, 4vw, 3rem); }

.step {
  position: relative;
  padding: 0 0 clamp(2rem, 4vw, 3rem) 4.6rem;
  border-bottom: 1px solid rgba(240, 230, 220, 0.15);
}

.step:last-child { border-bottom: 0; padding-bottom: 0; }

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  left: 0;
  top: 0.1em;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--forest-green);
  letter-spacing: 0.04em;
}

.step h3 { font-size: 1.35rem; margin-bottom: 0.7rem; color: #fff; }

.step p { color: rgba(240, 230, 220, 0.78); }

.process-claim {
  margin-top: clamp(3.5rem, 7vw, 5.5rem);
  padding-top: clamp(2.5rem, 5vw, 4rem);
  border-top: 1px solid rgba(240, 230, 220, 0.15);
  text-align: center;
}

.process-claim p {
  font-size: clamp(1.25rem, 2.6vw, 1.9rem);
  font-weight: 600;
  max-width: 34ch;
  margin-inline: auto;
  color: var(--sky-blue);
}

/* ---------- About ---------- */

.about { background: var(--sky-blue); }

.about .img-portrait {
  aspect-ratio: 3 / 4;
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}

.about-name {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-top: 1rem;
}

.about-role {
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--walnut-brown);
}

.signature {
  margin-top: 2rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--forest-green);
}

/* ---------- Gallery ---------- */

.gallery { background: var(--fresh-cream); }

.gallery-head { margin-bottom: clamp(2.5rem, 6vw, 4.5rem); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(0.8rem, 2vw, 1.5rem);
}

.gallery-grid figure {
  overflow: hidden;
  border-radius: var(--radius);
  position: relative;
}

.gallery-grid img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}

.gallery-grid figure:hover img { transform: scale(1.05); }

.gallery-grid figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 2.2rem 1.2rem 1rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fresh-cream);
  background: linear-gradient(to top, rgba(20, 40, 40, 0.65), transparent);
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}

.gallery-grid figure:hover figcaption { opacity: 1; }

/* ---------- Contact ---------- */

.contact {
  position: relative;
  isolation: isolate;
  color: var(--midnight-blue);
  text-align: center;
}

.contact-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

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

.contact::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(240, 230, 220, 0.82);
}

.contact .section-title { margin-inline: auto; max-width: 22ch; }

.contact .lead { margin: 1.4rem auto 2.6rem; }

.contact-email {
  display: inline-block;
  margin-top: 2.2rem;
  font-size: clamp(1.1rem, 2.4vw, 1.6rem);
  font-weight: 600;
  color: var(--forest-green);
  border-bottom: 1px solid currentColor;
  transition: color 0.3s var(--ease);
}

.contact-email:hover { color: var(--midnight-blue); }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--midnight-blue);
  color: var(--storm-cloud);
  padding-block: clamp(2.5rem, 5vw, 4rem);
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.site-footer img { height: 20px; width: auto; opacity: 0.9; }

.footer-nav { display: flex; gap: 1.6rem; flex-wrap: wrap; }

.footer-nav a {
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.75rem;
  transition: color 0.3s var(--ease);
}

.footer-nav a:hover { color: var(--fresh-cream); }

/* ---------- Scroll reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.visible { opacity: 1; transform: none; }

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

/* ---------- Responsive ---------- */

@media (max-width: 920px) {
  .split,
  .process-grid,
  .process-head { grid-template-columns: 1fr; }

  .process-media { position: static; order: -1; max-width: 480px; }

  .split-media { max-width: 480px; }

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

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

@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--cream-light);
    box-shadow: 0 18px 40px rgba(20, 40, 40, 0.12);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.45s var(--ease);
  }

  .site-header.nav-open .main-nav { max-height: 60vh; }

  .main-nav a {
    width: 100%;
    padding: 1rem var(--gutter);
    color: var(--midnight-blue) !important;
  }

  .main-nav a::after { display: none; }

  .site-header.nav-open {
    background: var(--cream-light);
  }

  .site-header.nav-open .brand .logo-dark { display: block; }
  .site-header.nav-open .brand .logo-light { display: none; }
  .site-header.nav-open .lang-switch { color: var(--midnight-blue); }

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

  .hero-scroll { display: none; }

  .split-media .img-accent { bottom: -1.5rem; }
}