/* Art direction: Hemingway Family Office — Old Money, Multigenerational Prestige
   Palette: Warm gold primary (#B8924A), rich cream/ivory surfaces, deep charcoal text
   Typography: Cormorant Garamond (display serif) + Cormorant Infant (body serif) — classical, refined, timeless
   Density: Spacious — generous whitespace to convey confidence and restraint */

/* ========== TYPE SCALE ========== */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);
}

/* ========== SPACING ========== */
:root {
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

/* ========== CUSTOM PALETTE — Hemingway Gold ========== */
:root {
  /* Font families */
  --font-display: 'Cormorant Garamond', 'Georgia', serif;
  --font-body: 'Cormorant Infant', 'Georgia', serif;

  /* Surfaces — warm ivory/cream */
  --color-bg:             #FAF8F4;
  --color-surface:        #F5F2EB;
  --color-surface-2:      #EDE9E0;
  --color-surface-offset: #E6E1D6;
  --color-divider:        #D5CEBC;
  --color-border:         #C9C0AB;

  /* Text — deep warm charcoal */
  --color-text:           #2C2A24;
  --color-text-muted:     #6B6558;
  --color-text-faint:     #A09883;
  --color-text-inverse:   #FAF8F4;

  /* Primary — Hemingway Gold */
  --color-primary:        #B8924A;
  --color-primary-hover:  #9E7B3A;
  --color-primary-active: #7D612D;
  --color-primary-light:  #D4BC82;
  --color-primary-lighter: #E8D9B6;

  /* Dark accent */
  --color-dark:           #2C2A24;
  --color-dark-surface:   #3A3730;
  --color-dark-lighter:   #4A463D;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px oklch(0.2 0.02 70 / 0.08);
  --shadow-md: 0 4px 12px oklch(0.2 0.02 70 / 0.1);
  --shadow-lg: 0 12px 32px oklch(0.2 0.02 70 / 0.14);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;
}

/* ========== TYPOGRAPHY ========== */
body {
  font-family: var(--font-body);
  font-weight: 400;
  letter-spacing: 0.01em;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.03em;
}

.display-heading {
  font-family: var(--font-display);
  font-weight: 300;
  letter-spacing: 0.06em;
}

/* ========== GLOBAL UTILITIES ========== */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

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

/* ========== HEADER ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-5) 0;
  transition: background 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              padding 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-header.scrolled {
  background: rgba(250, 248, 244, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: var(--space-3) 0;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text-inverse);
  transition: color 0.4s;
}

.scrolled .header-logo {
  color: var(--color-text);
}

.header-logo img {
  height: 36px;
  width: auto;
}

.header-logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header-nav a {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-text-inverse);
  transition: color 0.3s, opacity 0.3s;
  opacity: 0.85;
}

.header-nav a:hover {
  opacity: 1;
}

.scrolled .header-nav a {
  color: var(--color-text);
}

.header-email {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
}

.header-email svg {
  width: 14px;
  height: 14px;
  display: inline-block;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text-inverse);
  transition: background 0.3s;
}

.scrolled .nav-toggle span {
  background: var(--color-text);
}

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

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

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

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(44, 42, 36, 0.45) 0%,
    rgba(44, 42, 36, 0.25) 40%,
    rgba(44, 42, 36, 0.55) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  padding: var(--space-8);
}

.hero-monogram {
  width: 80px;
  height: auto;
  margin: 0 auto var(--space-8);
  opacity: 0.9;
  filter: brightness(1.8) saturate(0.5);
}

.hero h1 {
  font-size: var(--text-3xl);
  color: #fff;
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-primary-light);
  letter-spacing: 0.12em;
  font-weight: 300;
  text-transform: uppercase;
}

.hero-greeting {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-primary-light);
  letter-spacing: 0.12em;
  font-weight: 300;
  text-transform: uppercase;
  margin-top: var(--space-6);
  line-height: 1.7;
}

.hero-chinese {
  font-family: 'Zhi Mang Xing', cursive;
  font-size: 2em;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: none;
  display: inline-block;
  margin-top: 0.15em;
  font-style: normal;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255,255,255,0.6);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: float 2.5s ease-in-out infinite;
}

.hero-scroll-indicator svg {
  width: 20px;
  height: 20px;
  stroke: rgba(255,255,255,0.6);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ========== SECTIONS ========== */
.section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
}

.section--dark {
  background: var(--color-dark);
  color: var(--color-text-inverse);
}

.section--dark .color-muted {
  color: rgba(250,248,244,0.65);
}

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

.section--deep {
  background: var(--color-surface-2);
}

/* ========== SECTION HEADERS ========== */
.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  text-align: inherit;
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: 300;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-6);
  line-height: 1.15;
}

.section-title--sm {
  font-size: var(--text-xl);
}

.section-divider {
  width: 60px;
  height: 1px;
  background: var(--color-primary);
  margin-bottom: var(--space-8);
}

.section--dark .section-divider {
  background: var(--color-primary-light);
}

/* ========== TWO-COLUMN LAYOUTS ========== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 4vw, var(--space-16));
  align-items: center;
}

.two-col--reverse {
  direction: rtl;
}

.two-col--reverse > * {
  direction: ltr;
}

.two-col-image {
  width: 100%;
  height: 100%;
  min-height: 400px;
  object-fit: cover;
}

.two-col-content {
  padding: var(--space-8) 0;
}

.two-col-content h3 {
  font-size: var(--text-xl);
  font-weight: 400;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-4);
  color: var(--color-primary);
}

.two-col-content p {
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.two-col-content p:last-child {
  margin-bottom: 0;
}

/* ========== FULL-BLEED IMAGE DIVIDER ========== */
.image-divider {
  width: 100%;
  height: clamp(300px, 40vh, 500px);
  object-fit: cover;
}

/* ========== CORE DIVISIONS ========== */
.division-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 80vh;
}

.division-block--reverse {
  direction: rtl;
}

.division-block--reverse > * {
  direction: ltr;
}

.division-image {
  position: relative;
  overflow: hidden;
}

.division-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.division-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(var(--space-8), 5vw, var(--space-16));
}

.division-number {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.division-title {
  font-size: var(--text-xl);
  font-weight: 400;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-6);
}

.division-content p {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.division-content .section--dark p {
  color: rgba(250,248,244,0.7);
}

/* ========== PHILOSOPHY / VALUES ========== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-12);
}

.value-item {
  text-align: center;
  padding: var(--space-8) var(--space-6);
}

.value-icon {
  width: 48px;
  height: 1px;
  background: var(--color-primary);
  margin: 0 auto var(--space-6);
}

.value-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.value-text {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 32ch;
  margin-inline: auto;
}

/* ========== QUOTE / PULL QUOTE ========== */
.quote-section {
  text-align: center;
  padding: clamp(var(--space-16), 10vw, var(--space-32)) var(--space-6);
}

.quote-text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 300;
  font-style: italic;
  letter-spacing: 0.02em;
  line-height: 1.5;
  max-width: 50ch;
  margin: 0 auto var(--space-6);
  color: var(--color-primary);
}

.quote-attribution {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

/* ========== CONTACT ========== */
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-info {
  padding-top: var(--space-4);
}

.contact-logo {
  max-width: 280px;
  margin-bottom: var(--space-8);
  opacity: 0.85;
}

.contact-tagline {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-6);
}

.contact-details {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.contact-details a {
  color: var(--color-primary);
  text-decoration: none;
}

.contact-details a:hover {
  color: var(--color-primary-hover);
}

.contact-form h3 {
  font-size: var(--text-xl);
  font-weight: 400;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-8);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  color: var(--color-text);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px oklch(from var(--color-primary) l c h / 0.15);
}

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

.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-8);
  background: var(--color-dark);
  color: var(--color-text-inverse);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background var(--transition-interactive),
              transform var(--transition-interactive);
}

.btn-submit:hover {
  background: var(--color-primary);
  transform: translateY(-1px);
}

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

/* ========== FOOTER ========== */
.site-footer {
  background: var(--color-dark);
  color: var(--color-text-inverse);
  padding: var(--space-6) 0;
  text-align: center;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: rgba(250,248,244,0.5);
  letter-spacing: 0.05em;
}

.footer-inner a {
  color: rgba(250,248,244,0.5);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer-inner a:hover {
  color: var(--color-primary-light);
}

.footer-sep {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(250,248,244,0.25);
}

/* ========== SCROLL ANIMATIONS ========== */
.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 80%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .two-col {
    gap: var(--space-8);
  }

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

@media (max-width: 768px) {
  .header-nav {
    display: none;
  }

  .header-nav.active {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(250, 248, 244, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    justify-content: center;
    align-items: center;
    gap: var(--space-8);
    z-index: 200;
  }

  .header-nav.active a {
    color: var(--color-text);
    font-size: var(--text-base);
    letter-spacing: 0.2em;
  }

  .nav-toggle {
    display: flex;
    z-index: 210;
  }

  .nav-close {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    font-size: 28px;
    color: var(--color-text);
    cursor: pointer;
    z-index: 220;
    background: none;
    border: none;
    padding: var(--space-2);
  }

  .two-col,
  .division-block,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .two-col--reverse,
  .division-block--reverse {
    direction: ltr;
  }

  .two-col-image {
    min-height: 300px;
  }

  .division-image {
    min-height: 50vh;
    position: relative;
  }

  .division-image img {
    position: relative;
  }

  .values-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .hero h1 {
    font-size: var(--text-2xl);
  }

  .contact-logo {
    max-width: 220px;
  }
}

@media (max-width: 480px) {
  .container {
    padding-inline: var(--space-4);
  }

  .hero-content {
    padding: var(--space-4);
  }
}