/* ============================================
   MERITUS ADVISORY GROUP
   Design System — Modern Minimal × Advisory
   ============================================ */

/* --- Design Tokens --- */
:root {
  /* Color — Primary */
  --navy-900: #081428;
  --navy-800: #0A1930;
  --navy-700: #122444;
  --navy-600: #1B3560;
  --navy-500: #2D4A7C;

  /* Color — Accent (warm gold) */
  --gold-500: #C9A961;
  --gold-400: #D6B978;
  --gold-600: #A88B4A;

  /* Color — Neutrals */
  --paper: #FAFAF7;
  --paper-2: #F3F2EC;
  --ink-900: #0C1220;
  --ink-700: #2A3245;
  --ink-500: #5B6475;
  --ink-300: #A8AEBB;
  --ink-200: #D4D7DE;
  --ink-100: #E8EAEE;
  --line: rgba(10, 25, 48, 0.08);
  --line-strong: rgba(10, 25, 48, 0.18);

  /* Typography */
  --font-display: "Fraunces", "Times New Roman", serif;
  --font-body: "Inter Tight", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* Scale — fluid */
  --step--1: clamp(0.833rem, 0.80rem + 0.17vw, 0.9rem);
  --step-0: clamp(1rem, 0.96rem + 0.20vw, 1.0625rem);
  --step-1: clamp(1.125rem, 1.07rem + 0.28vw, 1.22rem);
  --step-2: clamp(1.35rem, 1.26rem + 0.46vw, 1.56rem);
  --step-3: clamp(1.66rem, 1.51rem + 0.75vw, 2.0rem);
  --step-4: clamp(2.05rem, 1.82rem + 1.16vw, 2.6rem);
  --step-5: clamp(2.60rem, 2.20rem + 2.00vw, 3.5rem);
  --step-6: clamp(3.20rem, 2.60rem + 3.00vw, 4.8rem);
  --step-7: clamp(3.80rem, 2.80rem + 5.00vw, 6.5rem);

  /* Spacing */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4.5rem;
  --space-7: 7rem;
  --space-8: 10rem;

  /* Layout */
  --content-max: 1320px;
  --content-pad: clamp(1.25rem, 4vw, 2.5rem);

  /* Motion */
  --ease-out-soft: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
}
body {
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.55;
  color: var(--ink-900);
  background: var(--paper);
  font-feature-settings: "ss01", "cv11";
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 340;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--ink-900);
  font-variation-settings: "SOFT" 20, "WONK" 0, "opsz" 144;
}
h1 { font-size: var(--step-7); line-height: 0.98; letter-spacing: -0.035em; }
h2 { font-size: var(--step-5); line-height: 1.05; letter-spacing: -0.025em; }
h3 { font-size: var(--step-3); line-height: 1.15; letter-spacing: -0.02em; }
h4 { font-size: var(--step-2); line-height: 1.25; }

p { margin: 0 0 1em; color: var(--ink-700); max-width: 68ch; }

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-500);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--gold-500);
}
.eyebrow--gold { color: var(--gold-600); }

.label-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink-500);
}

em, .serif-italic {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 320;
}

/* --- Layout Primitives --- */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-left: var(--content-pad);
  padding-right: var(--content-pad);
}
.container--narrow { max-width: 920px; }

section { padding: var(--space-7) 0; }

.grid { display: grid; gap: var(--space-4); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.92rem 1.35rem;
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: 2px;
  transition: all 0.35s var(--ease-out-soft);
  position: relative;
  white-space: nowrap;
}
.btn--primary {
  background: var(--navy-800);
  color: var(--paper);
}
.btn--primary:hover {
  background: var(--navy-900);
  transform: translateY(-1px);
  box-shadow: 0 14px 36px -14px rgba(10, 25, 48, 0.45);
}
.btn--ghost {
  background: transparent;
  color: var(--ink-900);
  border: 1px solid var(--line-strong);
}
.btn--ghost:hover {
  border-color: var(--navy-800);
  background: var(--navy-800);
  color: var(--paper);
}
.btn--light {
  background: var(--paper);
  color: var(--navy-800);
}
.btn--light:hover {
  background: var(--gold-500);
  color: var(--navy-900);
}
.btn .arrow {
  display: inline-block;
  transition: transform 0.35s var(--ease-out-soft);
}
.btn:hover .arrow { transform: translateX(4px); }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.15rem 0;
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  background: rgba(250, 250, 247, 0.82);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease-out-soft), background 0.3s var(--ease-out-soft);
}
.nav.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(250, 250, 247, 0.94);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.logo {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}
.logo__img {
  height: 34px;
  width: auto;
  display: block;
  transition: opacity 0.25s var(--ease-out-soft);
}
.logo:hover .logo__img { opacity: 0.8; }
@media (max-width: 560px) {
  .logo__img { height: 27px; }
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__link {
  font-size: 0.88rem;
  font-weight: 450;
  color: var(--ink-700);
  position: relative;
  padding: 0.3rem 0;
  transition: color 0.25s var(--ease-out-soft);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--gold-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out-soft);
}
.nav__link:hover, .nav__link.is-active { color: var(--ink-900); }
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }

.nav__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--ink-500);
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  transition: all 0.25s var(--ease-out-soft);
}
.lang-toggle:hover { border-color: var(--navy-800); color: var(--ink-900); }
.lang-toggle__active { color: var(--ink-900); font-weight: 600; }
.lang-toggle__sep { color: var(--ink-300); }

.nav__cta { font-size: 0.82rem; padding: 0.7rem 1.05rem; }

.menu-toggle {
  display: none;
  width: 36px; height: 36px;
  position: relative;
}
.menu-toggle span {
  position: absolute;
  left: 8px; right: 8px;
  height: 1.5px;
  background: var(--ink-900);
  transition: all 0.3s var(--ease-out-soft);
}
.menu-toggle span:nth-child(1) { top: 13px; }
.menu-toggle span:nth-child(2) { top: 21px; }
.menu-toggle.is-open span:nth-child(1) { top: 17px; transform: rotate(45deg); }
.menu-toggle.is-open span:nth-child(2) { top: 17px; transform: rotate(-45deg); }

@media (max-width: 900px) {
  .nav__menu { display: none; }
  .menu-toggle { display: block; }
  .nav__cta { display: none; }
  .nav__menu.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--paper);
    border-top: 1px solid var(--line);
    padding: var(--space-3) var(--content-pad);
    align-items: flex-start;
    gap: var(--space-2);
  }
}

/* --- Footer --- */
.footer {
  background: var(--navy-900);
  color: var(--paper);
  padding: var(--space-7) 0 var(--space-4);
  position: relative;
  overflow: hidden;
}
.footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-500) 50%, transparent);
  opacity: 0.4;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}
@media (max-width: 760px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__col--wide { grid-column: 1 / -1; }
}
.footer h4 {
  color: var(--paper);
  font-size: 0.72rem;
  font-weight: 500;
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: var(--space-2);
  color: var(--gold-500);
}
.footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.9rem; }
.footer a {
  font-size: 0.92rem;
  color: rgba(250, 250, 247, 0.72);
  transition: color 0.25s var(--ease-out-soft);
}
.footer a:hover { color: var(--gold-400); }
.footer__country {
  display: block;
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gold-400);
  margin-bottom: 0.35rem;
}
.footer__addr {
  display: block;
  font-size: 0.86rem;
  line-height: 1.5;
  color: rgba(250, 250, 247, 0.72);
}
.footer__tagline {
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1.3;
  color: var(--paper);
  margin: 0 0 var(--space-3);
  font-weight: 320;
  max-width: 26ch;
  letter-spacing: -0.01em;
}
.footer__bottom {
  padding-top: var(--space-3);
  border-top: 1px solid rgba(250, 250, 247, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: 0.78rem;
  color: rgba(250, 250, 247, 0.5);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* --- Reveal on Scroll --- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease-out-soft), transform 0.9s var(--ease-out-soft);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }

/* Respect reduced motion: show everything immediately */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* --- Utility --- */
.accent-gold { color: var(--gold-600); }
.text-navy { color: var(--navy-800); }
.text-muted { color: var(--ink-500); }
.divider-line {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: var(--space-5) 0;
}
.rule-gold {
  width: 48px;
  height: 1px;
  background: var(--gold-500);
  border: 0;
  margin: 0;
}

/* --- Decorative elements --- */
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
  pointer-events: none;
  opacity: 0.6;
}

.noise {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.025;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* --- Page Intro Pattern --- */
.page-intro {
  padding-top: calc(var(--space-7) + 60px);
  padding-bottom: var(--space-6);
  position: relative;
  border-bottom: 1px solid var(--line);
}
.page-intro__grid {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--space-5);
  align-items: start;
}
@media (max-width: 780px) {
  .page-intro__grid { grid-template-columns: 1fr; gap: var(--space-3); }
}
.page-intro__meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-500);
  letter-spacing: 0.08em;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line-strong);
}
.page-intro h1 {
  font-size: var(--step-6);
  margin-bottom: var(--space-3);
}
.page-intro__lede {
  font-family: var(--font-display);
  font-weight: 320;
  font-size: var(--step-2);
  line-height: 1.4;
  color: var(--ink-700);
  max-width: 30ch;
  letter-spacing: -0.01em;
}