/* ============================================================
   Brigade Barcelona — main.css
   Reset · design tokens · header · buttons
   Palette (3 colours, drawn from the hero render):
     --midnight   dominant night sky / aerial land  (main)
     --ember      warm window + uplight glow         (accent / CTA)
     --terracotta illuminated tower crowns           (graphic accent)
   Every other surface/ink shade is derived from these three
   via color-mix() — no fourth colour is introduced.
   ============================================================ */

/* ---------- self-hosted typeface: Metropolis ---------- */
@font-face {
  font-family: "Metropolis";
  src: url("../fonts/metropolis.light.woff2") format("woff2");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Metropolis";
  src: url("../fonts/metropolis.light-italic.woff2") format("woff2");
  font-weight: 300;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Metropolis";
  src: url("../fonts/metropolis.medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Metropolis";
  src: url("../fonts/metropolis.bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

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

* {
  margin: 0;
  padding: 0;
}

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

:root {
  /* --- the three source colours --- */
  --midnight: #0d1526;
  --ember: #e0a24e;
  --terracotta: #b0432b;

  /* --- derived surfaces --- */
  --ground: var(--midnight);
  --ground-deep: color-mix(in srgb, var(--midnight) 82%, #000);
  --ground-raised: color-mix(in srgb, var(--midnight) 88%, var(--ember) 12%);

  /* --- derived ink --- */
  --parchment: color-mix(in srgb, var(--ember) 13%, #fff);
  --ink: var(--parchment);
  --ink-soft: color-mix(in srgb, var(--parchment) 70%, transparent);
  --ink-faint: color-mix(in srgb, var(--parchment) 42%, transparent);

  /* --- derived lines / glows --- */
  --hairline: color-mix(in srgb, var(--parchment) 16%, transparent);
  --hairline-ember: color-mix(in srgb, var(--ember) 34%, transparent);
  --ember-glow: color-mix(in srgb, var(--ember) 38%, transparent);
  --ember-soft: color-mix(in srgb, var(--ember) 78%, #fff);
  --danger: color-mix(in srgb, var(--terracotta) 72%, #fff);

  /* --- easing --- */
  --ease-luxe: cubic-bezier(0.2, 0.7, 0.2, 1);

  /* --- type (self-hosted Metropolis, geometric sans) --- */
  --font-display: "Metropolis", "Segoe UI", system-ui, sans-serif;
  --font-body: "Metropolis", "Segoe UI", system-ui, sans-serif;

  /* --- rhythm --- */
  --page-x: clamp(1.25rem, 5vw, 5rem);
  --header-h: 76px;
}

body {
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 3px;
}

/* ---------- shared eyebrow (page-wide structural device) ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--ember);
}

.eyebrow::before {
  content: "";
  width: 2.4rem;
  height: 2px;
  background: var(--terracotta);
}

/* ---------- buttons ---------- */
.btn {
  --_pad-y: 0.95rem;
  --_pad-x: 1.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: var(--_pad-y) var(--_pad-x);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border-radius: 2px;
  transition:
    transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1),
    background-color 0.35s ease,
    color 0.35s ease,
    border-color 0.35s ease;
}

.btn svg {
  width: 1rem;
  height: 1rem;
  flex: none;
}

.btn-ember {
  background: var(--ember);
  color: var(--midnight);
  box-shadow: 0 0 0 0 var(--ember-glow);
}

.btn-ember:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px -12px var(--ember-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--hairline);
}

.btn-ghost:hover {
  border-color: var(--ember);
  color: var(--ember);
  transform: translateY(-2px);
}

/* ---------- header ---------- */
#fixed-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 80;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0 var(--page-x);
  transition:
    background-color 0.4s ease,
    border-color 0.4s ease,
    backdrop-filter 0.4s ease;
  border-bottom: 1px solid transparent;
}

#fixed-header.scrolled {
  background: color-mix(in srgb, var(--ground-deep) 90%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--hairline);
}

.brand-logo {
  display: inline-flex;
  align-items: center;
}

.brand-logo img {
  height: 44px;
  width: auto;
  display: block;
}

.header-nav {
  display: flex;
  gap: 2.2rem;
  margin-left: auto;
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.header-nav a {
  position: relative;
  color: var(--ink-soft);
  padding: 0.4rem 0;
  transition: color 0.3s ease;
}

.header-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--ember);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.header-nav a:hover {
  color: var(--ink);
}

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

.header-cta {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  transition: color 0.3s ease;
}

.header-phone svg {
  width: 0.95rem;
  height: 0.95rem;
  fill: var(--ember);
}

.header-phone:hover {
  color: var(--ink);
}

.header-enquire {
  --_pad-y: 0.7rem;
  --_pad-x: 1.4rem;
}

.header-burger {
  display: none;
  width: 30px;
  height: 18px;
  position: relative;
}

.header-burger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.header-burger span:nth-child(1) { top: 0; }
.header-burger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.header-burger span:nth-child(3) { bottom: 0; }

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

/* ---------- mobile menu ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.4rem;
  padding: var(--page-x);
  background: var(--ground-deep);
  transform: translateY(-100%);
  transition: transform 0.5s cubic-bezier(0.7, 0, 0.2, 1);
}

.mobile-menu.open {
  transform: translateY(0);
}

.mobile-menu a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--ink);
}

.mobile-menu a span {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--ember);
}

.mobile-menu .btn {
  margin-top: 1.6rem;
  justify-content: center;
}

@media (max-width: 900px) {
  .header-nav,
  .header-phone {
    display: none;
  }
  .header-burger {
    display: block;
  }
}

@media (max-width: 560px) {
  .header-enquire {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}