/* ============================================================
   CUSTOM PROPERTIES
============================================================ */
:root {
  /* Colors */
  --color-hero-bg: #2c3b34;
  --color-cream: #faf8f5;
  --color-white: #ffffff;
  --color-warm: #eae3d9;
  --color-warm-dark: #d9cfc2;
  --color-accent: #7a9b8a;
  --color-accent-dark: #587a6a;
  --color-charcoal: #1c1c1e;
  --color-muted: #6b6860;
  --color-border: #ddd7ce;

  /* Typography */
  --font-serif: "Cormorant Garamond", Georgia, serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;

  /* Spacing */
  --space-1: 0.5rem; /*  8px */
  --space-2: 1rem; /* 16px */
  --space-3: 1.5rem; /* 24px */
  --space-4: 2rem; /* 32px */
  --space-6: 3rem; /* 48px */
  --space-8: 4rem; /* 64px */
  --space-12: 6rem; /* 96px */
  --space-16: 8rem; /* 128px */

  /* Container */
  --container-max: 1200px;
  --container-narrow: 780px;
  --container-pad: var(--space-3);

  /* Transitions */
  --transition-base: 220ms ease;
  --transition-slow: 380ms ease;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

/* ============================================================
   RESET & BASE
============================================================ */
*,
*::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: 1rem;
  line-height: 1.75;
  color: var(--color-charcoal);
  background-color: var(--color-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
video {
  max-width: 100%;
  display: block;
}

ul {
  list-style: none;
}

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

address {
  font-style: normal;
}

strong {
  font-weight: 600;
}

details summary {
  list-style: none;
}

details summary::-webkit-details-marker {
  display: none;
}

/* ============================================================
   TYPOGRAPHY SCALE
============================================================ */
h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
}
h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
}
h3 {
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 500;
}
h4 {
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: 0;
}

p {
  max-width: 68ch;
}

/* ============================================================
   LAYOUT UTILITIES
============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

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

.section {
  padding-block: var(--space-12);
}

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

.section--dark {
  background-color: var(--color-hero-bg);
}

.section__label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-2);
}

.section__label--light {
  color: var(--color-accent);
}

.section__title {
  margin-bottom: var(--space-8);
}

/* ============================================================
   BUTTON
============================================================ */
.btn {
  display: inline-block;
  padding: 0.85rem 2.25rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: var(--radius-sm);
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
}

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

.btn:active {
  transform: translateY(0);
}

.btn--light {
  background-color: var(--color-white);
  color: var(--color-hero-bg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.btn--light:hover {
  background-color: var(--color-cream);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.16);
}

.btn--accent {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn--accent:hover {
  background-color: var(--color-accent-dark);
}

/* ============================================================
   NAVIGATION
============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: transparent;
  transition:
    background-color var(--transition-slow),
    box-shadow var(--transition-slow);
}

.site-header.scrolled {
  background-color: var(--color-white);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.nav__brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
}

.nav__name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-white);
  transition: color var(--transition-slow);
  line-height: 1.2;
}

.site-header.scrolled .nav__name {
  color: var(--color-charcoal);
}

.nav__credential {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  line-height: 1;
}

/* Hamburger */
.nav__toggle-input {
  display: none;
}

.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  z-index: 101;
}

.nav__hamburger span {
  display: block;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition:
    transform var(--transition-base),
    opacity var(--transition-base),
    background-color var(--transition-slow);
}

.site-header.scrolled .nav__hamburger span {
  background-color: var(--color-charcoal);
}

.nav__toggle-input:checked ~ .nav__hamburger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background-color: var(--color-white);
}

.nav__toggle-input:checked ~ .nav__hamburger span:nth-child(2) {
  opacity: 0;
}

.nav__toggle-input:checked ~ .nav__hamburger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background-color: var(--color-white);
}

/* Mobile menu */
.nav__links {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: fixed;
  inset: 0;
  background-color: var(--color-hero-bg);
  padding: var(--space-16) var(--space-4) var(--space-6);
  opacity: 0;
  pointer-events: none;
  transform: translateX(100%);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

.nav__toggle-input:checked ~ .nav__links {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}

.nav__link {
  display: block;
  padding: var(--space-2) 0;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--color-white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: color var(--transition-base);
}

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

.nav__link--cta {
  color: var(--color-accent);
  border-bottom: none;
  font-weight: 500;
}

/* ============================================================
   HERO
============================================================ */
.hero {
  min-height: 100svh;
  background-color: var(--color-hero-bg);
  display: flex;
  align-items: center;
  padding-block: calc(var(--space-16) + var(--space-4)) var(--space-12);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse 80% 60% at 70% 50%,
      rgba(122, 155, 138, 0.08) 0%,
      transparent 70%
    ),
    radial-gradient(
      ellipse 40% 40% at 20% 80%,
      rgba(90, 122, 106, 0.06) 0%,
      transparent 60%
    );
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(122, 155, 138, 0.4) 40%,
    rgba(122, 155, 138, 0.4) 60%,
    transparent
  );
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
}

.hero__supertitle {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  max-width: none;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 9vw, 7rem);
  font-weight: 300;
  line-height: 1;
  color: var(--color-white);
  letter-spacing: -0.02em;
  max-width: 14ch;
}

.hero__subtitle {
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  line-height: 1.8;
  color: rgba(250, 248, 245, 0.72);
  max-width: 52ch;
}

/* ============================================================
   VISION
============================================================ */
.vision .container--narrow {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.vision__text {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-muted);
  max-width: 65ch;
}

.vision__text + .vision__text {
  margin-top: var(--space-3);
}

/* ============================================================
   SERVICES
============================================================ */
.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.service-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-4);
  border: 1px solid var(--color-warm-dark);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition:
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.service-card:hover {
  box-shadow: 0 8px 32px rgba(44, 59, 52, 0.1);
  transform: translateY(-4px);
}

.service-card__icon {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  letter-spacing: -0.02em;
}

.service-card__title {
  font-size: 1.2rem;
  line-height: 1.25;
  color: var(--color-charcoal);
}

.service-card__headline {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--color-accent-dark);
  max-width: none;
}

.service-card__text {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.7;
  flex-grow: 1;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-1);
}

.service-card__tags li {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  background-color: rgba(122, 155, 138, 0.1);
  padding: 3px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ============================================================
   ABOUT
============================================================ */
.about__title {
  margin-bottom: var(--space-8);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.about__intro {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.about__subtitle {
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-charcoal);
  margin-bottom: var(--space-1);
}

.about__intro p {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* Timeline */
.about__timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: var(--space-3);
  padding-block: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.timeline-item:last-child {
  border-bottom: 1px solid var(--color-border);
}

.timeline-item__years {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--color-warm-dark);
  line-height: 1.2;
  padding-top: 2px;
}

.timeline-item--accent .timeline-item__years {
  color: var(--color-accent);
  font-size: 1.4rem;
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: 0.04em;
}

.timeline-item__role {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-charcoal);
  margin-bottom: var(--space-1);
}

.timeline-item__desc {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.75;
}

/* ============================================================
   VALUES
============================================================ */
.values__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.value-card {
  padding: var(--space-4);
  background-color: rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-warm-dark);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition:
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(44, 59, 52, 0.09);
}

.value-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background-color: rgba(122, 155, 138, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-dark);
  flex-shrink: 0;
  margin-bottom: var(--space-1);
  transition: background-color var(--transition-base);
}

.value-card__icon svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.value-card:hover .value-card__icon {
  background-color: rgba(122, 155, 138, 0.22);
}

.value-card__title {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-charcoal);
  line-height: 1.3;
}

.value-card__text {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.75;
}

/* ============================================================
   FAQ
============================================================ */
.faq__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border);
}

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

.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block: var(--space-3);
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-charcoal);
  transition: color var(--transition-base);
  user-select: none;
}

.faq__question:hover {
  color: var(--color-accent-dark);
}

.faq__item:has(summary:hover) {
  background-color: rgba(122, 155, 138, 0.03);
}

.faq__icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    color var(--transition-base);
}

.faq__icon {
  width: 14px;
  height: 14px;
  display: block;
  overflow: visible;
}

.faq__icon-v {
  transform-origin: 12px 12px;
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
}

details[open] .faq__icon-wrap {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

details[open] .faq__icon-v {
  transform: rotate(90deg);
  opacity: 0;
}

.faq__answer {
  overflow: hidden;
  padding-bottom: var(--space-4);
  padding-right: var(--space-6);
}

.faq__answer p {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.8;
  max-width: 62ch;
}

.faq__answer p + p {
  margin-top: var(--space-2);
}

.faq__answer ul {
  list-style: disc;
  padding-left: var(--space-3);
  margin-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

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

/* ============================================================
   CONTACT
============================================================ */
.contact__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  color: var(--color-white);
  margin-bottom: var(--space-3);
  line-height: 1.2;
}

.contact__intro {
  font-size: 1rem;
  color: rgba(250, 248, 245, 0.7);
  line-height: 1.8;
  margin-bottom: var(--space-6);
  max-width: 54ch;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.contact__item {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: var(--space-2);
  align-items: baseline;
  padding-block: var(--space-3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.contact__item-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.contact__item-value {
  font-size: 0.95rem;
  color: rgba(250, 248, 245, 0.85);
  max-width: none;
}

.contact__cta {
  display: inline-block;
}

/* ============================================================
   FOOTER
============================================================ */
.footer {
  background-color: #1a2620;
  padding-block: var(--space-8) var(--space-6);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: var(--space-4);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer__name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--color-white);
  display: block;
}

.footer__credential {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.footer__ethics-title {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
  max-width: none;
}

.footer__ethics-text {
  font-size: 0.8rem;
  color: rgba(250, 248, 245, 0.45);
  line-height: 1.75;
  max-width: 60ch;
}

.footer__bottom p {
  font-size: 0.75rem;
  color: rgba(250, 248, 245, 0.3);
  max-width: none;
}

/* ============================================================
   RESPONSIVE — TABLET  (min-width: 640px)
============================================================ */
@media (min-width: 640px) {
  :root {
    --container-pad: var(--space-4);
  }

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

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

  .footer__inner {
    grid-template-columns: 1fr 2fr;
  }
}

/* ============================================================
   RESPONSIVE — DESKTOP (min-width: 1024px)
============================================================ */
@media (min-width: 1024px) {
  :root {
    --container-pad: var(--space-4);
  }

  /* Nav — desktop layout */
  .nav__hamburger {
    display: none;
  }

  .nav__links {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: var(--space-1);
    background-color: transparent;
    padding: 0;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    inset: unset;
  }

  .nav__link {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 400;
    color: rgba(250, 248, 245, 0.75);
    padding: var(--space-1) var(--space-2);
    border-bottom: none;
    transition: color var(--transition-base);
  }

  .nav__link:hover {
    color: var(--color-white);
  }

  .site-header.scrolled .nav__link {
    color: var(--color-muted);
  }

  .site-header.scrolled .nav__link:hover {
    color: var(--color-charcoal);
  }

  .nav__link--cta {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    padding: 0.5rem 1.25rem;
    margin-left: var(--space-2);
    font-weight: 500;
  }

  .nav__link--cta:hover {
    background-color: var(--color-accent-dark);
    color: var(--color-white);
  }

  .site-header.scrolled .nav__link--cta {
    color: var(--color-white);
  }

  /* Services — 4 columns */
  .services__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  /* About — 2 columns */
  .about__grid {
    grid-template-columns: 1fr 1.4fr;
    gap: var(--space-12);
    align-items: start;
  }

  /* Values — 4 columns */
  .values__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Contact items — wider label column */
  .contact__item {
    grid-template-columns: 10rem 1fr;
  }
}

/* ============================================================
   RESPONSIVE — LARGE (min-width: 1280px)
============================================================ */
@media (min-width: 1280px) {
  .section {
    padding-block: var(--space-16);
  }

  .hero {
    padding-block: calc(var(--space-16) + var(--space-8)) var(--space-16);
  }
}

/* ============================================================
   ACCESSIBILITY
============================================================ */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

  html {
    scroll-behavior: auto;
  }
}