/* =============================================
   VIANCORE — Global Stylesheet
   viancore.com
   ============================================= */

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

:root {
  --black: #000000;
  --white: #ffffff;
  --accent: #20b2aa;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
}

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

body {
  font-family: var(--font);
  background: var(--black);
  color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: var(--font); cursor: pointer; }
img { max-width: 100%; display: block; }

/* =============================================
   NAVIGATION
   ============================================= */

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 6vw;
  border-bottom: 0.5px solid rgba(255,255,255,0.08);
  background: var(--black);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand { display: flex; flex-direction: column; gap: 5px; }

.nav-logo { display: flex; align-items: center; gap: 0; }
.nav-logo svg { width: clamp(220px, 28vw, 300px); height: auto; }

.nav-tagline {
  font-size: clamp(7px, 0.8vw, 9.5px);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  padding-left: 52px;
}

.nav-links {
  display: flex;
  gap: clamp(16px, 3vw, 36px);
}

.nav-links a {
  font-size: clamp(9px, 1vw, 11px);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--white); }
.nav-links a.active { color: var(--accent); border-bottom: 1px solid var(--accent); padding-bottom: 2px; }

/* Hamburger — mobile only */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
  cursor: pointer;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: rgba(255,255,255,0.7);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  background: #0a0a0a;
  border-bottom: 0.5px solid rgba(255,255,255,0.08);
  padding: 16px 6vw;
  gap: 0;
}
.nav-mobile a {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  padding: 14px 0;
  border-bottom: 0.5px solid rgba(255,255,255,0.06);
  display: block;
}
.nav-mobile a.active { color: var(--accent); }
.nav-mobile.open { display: flex; }

/* =============================================
   FOOTER
   ============================================= */

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 6vw;
  border-top: 0.5px solid rgba(255,255,255,0.07);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-size: clamp(9px, 1vw, 10px);
  color: rgba(255,255,255,0.18);
  letter-spacing: 0.08em;
  font-weight: var(--fw-light);
}

.footer-links { display: flex; gap: 24px; }
.footer-links a {
  font-size: clamp(9px, 1vw, 10px);
  color: rgba(255,255,255,0.18);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }

/* =============================================
   SHARED UTILITIES
   ============================================= */

.section-label {
  font-size: clamp(8px, 0.9vw, 10px);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.22);
  margin-bottom: 32px;
}

.tag {
  font-size: clamp(7px, 0.8vw, 8px);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 3px 7px;
  border: 0.5px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.25);
}

.btn-primary {
  font-size: clamp(9px, 1vw, 10px);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 12px 32px;
  background: var(--white);
  color: var(--black);
  border: none;
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: opacity 0.2s;
}
.btn-primary:hover { opacity: 0.88; }

.btn-ghost {
  font-size: clamp(9px, 1vw, 10px);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 12px 32px;
  background: transparent;
  color: var(--white);
  border: 0.5px solid rgba(255,255,255,0.3);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* =============================================
   RESPONSIVE BREAKPOINTS
   ============================================= */

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

  .footer { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .nav { padding: 18px 5vw; }
  .nav-tagline { display: none; }
}