/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  /* Colors */
  --bg-deep:      #080706;
  --bg-dark:      #100f0d;
  --bg-surface:   #1a1917;
  --bg-elevated:  #242220;

  --text-primary: #f5f0eb;
  --text-muted:   #a09890;
  --text-dim:     #605850;

  --accent:       #a16207;
  --accent-bright:#c47d0a;
  --accent-light: rgba(161, 98, 7, 0.15);

  --border:       rgba(255, 255, 255, 0.07);
  --border-mid:   rgba(255, 255, 255, 0.12);

  /* Typography */
  --font-serif:   'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans:    'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --section-py:   clamp(80px, 10vw, 140px);
  --max-w:        1200px;
  --max-w-text:   740px;

  /* Easing */
  --ease-out:     cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

address {
  font-style: normal;
}

/* ============================================================
   SKIP LINK
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 4px;
  z-index: 9999;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 1rem;
}

/* ============================================================
   SECTION SHARED
   ============================================================ */
.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--section-py) clamp(1.25rem, 5vw, 3rem);
}

.section-inner--narrow {
  max-width: var(--max-w-text);
}

.section-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-bright);
  margin-bottom: 1.25rem;
}

section h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 2.5rem;
}

/* ============================================================
   HEADER & NAV
   ============================================================ */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  transition: background 0.35s var(--ease-out), backdrop-filter 0.35s var(--ease-out);
}

#site-header.scrolled {
  background: rgba(8, 7, 6, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.5rem clamp(1.25rem, 5vw, 3rem);
}

.nav-logo img {
  height: 36px;
  width: auto;
  transition: opacity 0.2s;
}

.nav-logo:hover img,
.nav-logo:focus-visible img {
  opacity: 0.75;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-primary);
  opacity: 0.75;
  transition: opacity 0.2s;
  cursor: pointer;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  opacity: 1;
}

.nav-links a:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 4px;
  border-radius: 2px;
}

/* Hamburger */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
}

.hamburger-line {
  display: block;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: opacity 0.2s, transform 0.25s var(--ease-out);
  transform-origin: center;
}

.mobile-menu-btn:hover .hamburger-line,
.mobile-menu-btn:focus-visible .hamburger-line {
  opacity: 0.7;
}

.mobile-menu-btn:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Mobile nav overlay */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--bg-deep);
  z-index: 300;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out);
}

.mobile-nav:not([hidden]) {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.mobile-nav a {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 8vw, 3.5rem);
  font-weight: 400;
  color: var(--text-primary);
  padding: 0.6rem 1rem;
  transition: color 0.2s;
}

.mobile-nav a:hover,
.mobile-nav a:focus-visible {
  color: var(--accent-bright);
}

.mobile-nav a:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 4px;
  border-radius: 2px;
}

.mobile-nav-close {
  position: absolute;
  top: 1.5rem;
  right: clamp(1.25rem, 5vw, 3rem);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  opacity: 0.7;
  transition: opacity 0.2s;
}

.mobile-nav-close:hover,
.mobile-nav-close:focus-visible {
  opacity: 1;
}

.mobile-nav-close:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 4px;
  border-radius: 4px;
}

/* ============================================================
   HERO
   ============================================================ */
#hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  transform: scale(1.04);
  transition: transform 8s ease-out;
}

body.loaded .hero-img {
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(8, 7, 6, 0.72) 0%,
    rgba(8, 7, 6, 0.55) 50%,
    rgba(8, 7, 6, 0.80) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: clamp(1.5rem, 5vw, 3rem);
  max-width: 860px;
}

.hero-logo {
  width: clamp(200px, 40vw, 320px);
  height: auto;
  margin-bottom: 3rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.9s var(--ease-out) 0.2s, transform 0.9s var(--ease-out) 0.2s;
}

body.loaded .hero-logo {
  opacity: 1;
  transform: translateY(0);
}

.hero-tagline {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.9s var(--ease-out) 0.45s, transform 0.9s var(--ease-out) 0.45s;
}

body.loaded .hero-tagline {
  opacity: 1;
  transform: translateY(0);
}

.hero-sub {
  font-size: clamp(0.9375rem, 2vw, 1.125rem);
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 540px;
  margin-bottom: 3.5rem;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.9s var(--ease-out) 0.65s, transform 0.9s var(--ease-out) 0.65s;
}

body.loaded .hero-sub {
  opacity: 1;
  transform: translateY(0);
}

.desktop-break { display: none; }
@media (min-width: 640px) { .desktop-break { display: inline; } }

.scroll-cue {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--text-muted);
  border: 1px solid var(--border-mid);
  border-radius: 50%;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
  opacity: 0;
  animation: scrollCueFade 1s var(--ease-out) 1.2s forwards;
}

@keyframes scrollCueFade {
  to { opacity: 0.6; }
}

.scroll-cue:hover,
.scroll-cue:focus-visible {
  border-color: var(--accent-bright);
  color: var(--accent-bright);
  opacity: 1;
  transform: translateY(3px);
}

.scroll-cue:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 4px;
}

/* ============================================================
   ABOUT
   ============================================================ */
#about {
  background-color: var(--bg-dark);
  border-top: 1px solid var(--border);
}

.about-body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.about-body p {
  font-size: clamp(1rem, 1.5vw, 1.0625rem);
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 64ch;
}

.about-body p:first-child {
  font-size: clamp(1.0625rem, 1.75vw, 1.1875rem);
  color: var(--text-primary);
  font-weight: 400;
  line-height: 1.75;
}

/* ============================================================
   FOCUS AREAS
   ============================================================ */
#focus {
  background-color: var(--bg-deep);
  border-top: 1px solid var(--border);
}

#focus h2 {
  margin-bottom: 3rem;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--border);
  overflow: hidden;
  border-radius: 4px;
}

.focus-tile {
  position: relative;
  min-height: 480px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  background: var(--bg-surface);
}

.focus-tile-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.focus-tile-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease-out);
}

.focus-tile:hover .focus-tile-media img {
  transform: scale(1.04);
}

.focus-tile-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(8, 7, 6, 0.92) 0%,
    rgba(8, 7, 6, 0.55) 50%,
    rgba(8, 7, 6, 0.1) 100%
  );
}

.focus-tile-body {
  position: relative;
  z-index: 1;
  padding: 2rem 1.75rem 2.25rem;
}

.focus-tile-body h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.focus-tile-body p {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================================
   OUR APPROACH
   ============================================================ */
#approach {
  background-color: var(--bg-dark);
  border-top: 1px solid var(--border);
}

#approach h2 {
  margin-bottom: 3.5rem;
}

.principles-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.principle {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 0;
  padding: 2.75rem 2.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background 0.25s;
}

.principle:nth-child(2n) {
  border-right: none;
}

.principle:nth-child(3),
.principle:nth-child(4) {
  border-bottom: none;
}

.principle:hover {
  background: var(--bg-elevated);
}

.principle-num {
  font-family: var(--font-serif);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding-top: 0.3rem;
  user-select: none;
}

.principle-body h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.125rem, 1.75vw, 1.375rem);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.875rem;
  line-height: 1.25;
}

.principle-body p {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ============================================================
   FOOTER
   ============================================================ */
#site-footer {
  background-color: var(--bg-deep);
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3.5rem clamp(1.25rem, 5vw, 3rem);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
}

.footer-logo-link { display: flex; }
.footer-logo {
  height: 32px;
  width: auto;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.footer-logo-link:hover .footer-logo,
.footer-logo-link:focus-visible .footer-logo { opacity: 1; }

.footer-logo-link:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 4px;
  border-radius: 2px;
}

.footer-address {
  text-align: center;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--text-dim);
  letter-spacing: 0.01em;
}

.footer-copy {
  text-align: right;
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet: 768px */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: flex; }

  .focus-grid {
    grid-template-columns: 1fr;
    gap: 1.5px;
  }

  .focus-tile { min-height: 360px; }

  .principles-list {
    grid-template-columns: 1fr;
  }

  .principle {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .principle:last-child { border-bottom: none; }
  .principle:nth-child(3) { border-bottom: 1px solid var(--border); }
  .principle:nth-child(4) { border-bottom: none; }

  .footer-inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: 1.25rem;
  }

  .footer-copy { text-align: center; }
}

/* Mobile: 480px */
@media (max-width: 480px) {
  .hero-content { padding: 1.25rem; }

  .principle {
    grid-template-columns: 56px 1fr;
    padding: 2rem 1.5rem;
  }

  .focus-tile { min-height: 300px; }
  .focus-tile-body { padding: 1.5rem; }
}

/* Large: 1400px+ */
@media (min-width: 1400px) {
  .focus-tile { min-height: 540px; }
}