/* =====================================================
   Avalio — Landing Page Styles
   ===================================================== */

:root {
  --c-bg:      #f7f5f2;
  --c-surface: #ffffff;
  --c-text:    #1c1917;
  --c-text2:   #78716c;
  --c-muted:   #a8a29e;
  --c-border:  #e2ded9;

  --c-accent:  #0f4c35;
  --c-accent2: #1a6348;

  --f-display: 'Exo 2', sans-serif;
  --f-body:    'DM Sans', sans-serif;

  --max-w: 1060px;
  --pad: clamp(1.25rem, 5vw, 2.5rem);
  --ease: cubic-bezier(.4, 0, .2, 1);
  --ease-out: cubic-bezier(0, 0, .2, 1);
  --t: .2s;
}

/* ── Reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--f-body);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
em { font-style: normal; }

/* ── Container ──────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ── Header ─────────────────────────────────────────── */
#site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(247, 245, 242, .94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-border);
}
.header-row {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -.02em;
  flex-shrink: 0;
}
.logo-mark {
  width: 30px; height: 30px;
  background: var(--c-accent);
  border-radius: 4px;
  display: grid;
  place-items: center;
  font-size: .85rem;
  font-weight: 800;
  color: #fff;
}
.logo-mark.sm {
  width: 24px; height: 24px;
  font-size: .7rem;
}
.logo-name { color: var(--c-text); }

.desktop-nav {
  display: flex;
  gap: 1.75rem;
  margin-left: auto;
}
.desktop-nav a {
  font-size: .875rem;
  font-weight: 500;
  color: var(--c-text2);
  transition: color var(--t);
}
.desktop-nav a:hover { color: var(--c-text); }

.nav-cta {
  font-size: .875rem;
  font-weight: 500;
  color: var(--c-accent);
  transition: opacity var(--t);
}
.nav-cta:hover { opacity: .7; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--c-text);
  border-radius: 1px;
  transition: transform var(--t), opacity var(--t);
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg) }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0 }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg) }

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 1rem var(--pad) 1.5rem;
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
  gap: .1rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--c-text2);
  padding: .65rem 0;
  border-bottom: 1px solid var(--c-border);
  transition: color var(--t);
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--c-text); }

@media (max-width: 600px) {
  .desktop-nav, .nav-cta { display: none; }
  .hamburger { display: flex; }
}

/* ── Button ──────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  font-family: var(--f-body);
  font-size: .9rem;
  font-weight: 600;
  padding: .75rem 1.6rem;
  border-radius: 2px;
  background: var(--c-accent);
  color: #fff;
  transition: background var(--t);
  border: none;
  cursor: pointer;
  letter-spacing: .01em;
}
.btn-primary:hover { background: var(--c-accent2); }

/* ── Hero ────────────────────────────────────────────── */
.hero {
  padding: clamp(5rem, 11vw, 10rem) 0 clamp(4rem, 8vw, 7rem);
  border-bottom: 1px solid var(--c-border);
}
.hero-inner { max-width: 700px; }

.eyebrow {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 1.75rem;
  display: block;
}

.hero h1 {
  font-family: var(--f-display);
  font-size: clamp(2.6rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -.04em;
  margin-bottom: 1.5rem;
  color: var(--c-text);
}
.hero h1 em { color: var(--c-accent); }

.hero-sub {
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--c-text2);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

/* ── Sections ────────────────────────────────────────── */
.section {
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.sec-label {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 2.5rem;
  display: block;
}

/* ── Systems list ────────────────────────────────────── */
.systems-list {
  border-top: 1px solid var(--c-border);
}

.sys-row {
  display: grid;
  grid-template-columns: 2.5rem 1fr auto;
  gap: 1.5rem 2rem;
  align-items: baseline;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--c-border);
  transition: background var(--t);
}

.sys-num {
  font-family: var(--f-display);
  font-size: .72rem;
  font-weight: 700;
  color: var(--c-muted);
  letter-spacing: .05em;
  padding-top: .15rem;
}

.sys-body { min-width: 0; }
.sys-body h3 {
  font-family: var(--f-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: .35rem;
  color: var(--c-text);
}
.sys-body p {
  font-size: .875rem;
  color: var(--c-text2);
  line-height: 1.65;
  max-width: 480px;
}

.sys-link {
  font-size: .8rem;
  font-weight: 600;
  color: var(--c-accent);
  white-space: nowrap;
  transition: opacity var(--t);
  align-self: center;
}
.sys-link:hover { opacity: .65; }
.sys-link-empty { display: none; }

@media (max-width: 560px) {
  .sys-row {
    grid-template-columns: 2rem 1fr;
    gap: .75rem 1rem;
  }
  .sys-link {
    grid-column: 2;
    margin-top: .25rem;
  }
}

/* ── Contact section ─────────────────────────────────── */
.contact-section {
  background: var(--c-text);
  color: #fff;
}
.contact-box {
  max-width: 560px;
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}
.contact-box .eyebrow { color: rgba(255,255,255,.45); }
.contact-box h2 {
  font-family: var(--f-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.15;
  margin-bottom: 1rem;
  color: #fff;
}
.contact-box > p {
  font-size: 1rem;
  color: rgba(255,255,255,.55);
  line-height: 1.75;
  margin-bottom: 2rem;
  max-width: 460px;
}
.contact-box .btn-primary {
  background: #fff;
  color: var(--c-text);
}
.contact-box .btn-primary:hover {
  background: rgba(255,255,255,.88);
}

/* ── Footer ──────────────────────────────────────────── */
footer {
  padding: 1.25rem 0;
  border-top: 1px solid var(--c-border);
  background: var(--c-bg);
}
.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: .45rem;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: .95rem;
  letter-spacing: -.015em;
}
.footer-copy {
  font-size: .78rem;
  color: var(--c-muted);
}

/* ── Reveal ──────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s var(--ease-out), transform .5s var(--ease-out);
  transition-delay: var(--cd, 0s);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Reduced motion ──────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}