/*
  main.css — QuietCraft.tech shared styles
  Covers: fonts, variables, reset, nav, footer, buttons, utilities, animations.
  Loaded by every page on the site.
*/

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400;1,500&family=Quicksand:wght@400;500;600&family=Inter:wght@300;400;500&display=swap');

/* ── Variables ─────────────────────────────────── */
:root {
  color-scheme:   light dark;
  --bg:           #F9F7F4;
  --surface:      #FFFFFF;
  --text:         #2C2A29;
  --accent-blue:  #6C91B2;
  --accent-green: #8A9A7A;
  --hover:        #AFA9A0;
  --border:       #E5E2DC;
  --max-width:    1200px;
  --section-pad:  clamp(80px, 10vw, 140px);
  --font-head:    'Cormorant Garamond', 'Palatino Linotype', Georgia, serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-logo:    'Quicksand', 'Gill Sans', sans-serif;
}

/* ── Reset ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

a    { color: inherit; text-decoration: none; }
ul   { list-style: none; }
img, svg { display: block; max-width: 100%; }

/* ── Layout ────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 60px);
}

.section-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--hover);
  margin-bottom: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 120px;
}

/* ── Accessibility ─────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 20px;
  background: var(--text);
  color: var(--bg);
  padding: 8px 16px;
  font-size: 0.875rem;
  z-index: 10000;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

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

/* ── Scroll reveal ─────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.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: 0.32s; }
.reveal-delay-4         { transition-delay: 0.45s; }

/* ── Buttons ───────────────────────────────────── */
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text);
  border: 1.5px solid var(--border);
  padding: 13px 28px;
  background: transparent;
  cursor: pointer;
  transition: border-color 0.3s, background 0.3s, color 0.3s, box-shadow 0.3s;
  text-decoration: none;
}
.btn-outline:hover {
  border-color: var(--accent-blue);
  background: var(--accent-blue);
  color: white;
  box-shadow: 0 4px 20px rgba(108, 145, 178, 0.25);
}
.btn-outline svg { width: 16px; height: 16px; display: inline; transition: transform 0.3s; }
.btn-outline:hover svg { transform: translateX(4px); }

/* ── Navigation ────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 22px 0;
  transition: background 0.4s ease, padding 0.4s ease, box-shadow 0.4s ease;
}
.nav.scrolled {
  background: rgba(249, 247, 244, 0.93);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 14px 0;
  box-shadow: 0 1px 0 var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-logo);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 7px;
  text-decoration: none;
}
.nav-logo .logo-icon   { width: 26px; height: 26px; flex-shrink: 0; }
.nav-logo .logo-dot    { color: var(--accent-blue); }

/* Logo SVG — CSS props override SVG presentation attrs; inherit dark-mode vars */
.logo-icon > circle:first-child { stroke: var(--accent-blue); }
.logo-icon > path               { fill:   var(--accent-blue); }
.logo-icon > circle:last-child  { fill:   var(--accent-green); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text);
  opacity: 0.65;
  transition: opacity 0.25s, color 0.25s;
  position: relative;
  text-decoration: none;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--accent-blue);
  transition: width 0.3s ease;
}
.nav-links a:hover,
.nav-links a.active     { opacity: 1; color: var(--accent-blue); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile drawer */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.mobile-menu.open { opacity: 1; pointer-events: all; }
.mobile-menu a {
  font-family: var(--font-head);
  font-size: 2.6rem;
  font-weight: 300;
  letter-spacing: 0.01em;
  color: var(--text);
  opacity: 0.8;
  transition: color 0.2s, opacity 0.2s;
  text-decoration: none;
}
.mobile-menu a:hover { color: var(--accent-blue); opacity: 1; }

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

/* ── Footer ────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 44px 0 36px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-logo {
  font-family: var(--font-logo);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text);
  opacity: 0.75;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 5px;
}
.footer-logo .logo-dot { color: var(--accent-blue); opacity: 1; }
.footer-links { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; }
.footer-links a {
  font-size: 0.8125rem;
  color: var(--text);
  opacity: 0.5;
  transition: opacity 0.25s, color 0.25s;
  text-decoration: none;
}
.footer-links a:hover { opacity: 1; color: var(--accent-blue); }
.footer-copy {
  font-size: 0.75rem;
  color: var(--text);
  opacity: 0.32;
  letter-spacing: 0.02em;
}

@media (max-width: 640px) {
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}

/* ── Dark mode ──────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  :root {
    --bg:           #1B1917;
    --surface:      #252220;
    --text:         #EDE9E4;
    --accent-blue:  #7AACC8;
    --accent-green: #94A882;
    --hover:        #8A8480;
    --border:       #2E2B28;
  }

  .nav.scrolled {
    background: rgba(27, 25, 23, 0.94);
  }

  /* Soften heavy shadows — they read too loud on dark backgrounds */
  .btn-outline:hover {
    box-shadow: 0 4px 20px rgba(122, 172, 200, 0.18);
  }
}