/* Brewax — Shared Design System */
@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Cormorant+Garamond:wght@300;400;600&family=DM+Sans:wght@300;400;500&display=swap');

:root {
  --bg: #1C0F0A;
  --bg2: #2A1510;
  --surface: #3D2314;
  --surface2: #4E2E1A;
  --text: #F5F0E8;
  --text-muted: #A89080;
  --accent: #D4A017;
  --accent-dim: #9A7310;
  --accent-glow: rgba(212, 160, 23, 0.15);
  --border: rgba(212, 160, 23, 0.2);
  --danger: #C0392B;
  --success: #27AE60;
  --warn: #E67E22;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;

  --radius: 4px;
  --radius-lg: 8px;
  --transition: 0.2s ease;
}

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

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Grain overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* NAV */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(28, 15, 10, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 0;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 0.4rem 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color var(--transition);
  white-space: nowrap;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-muted);
  transition: var(--transition);
}

/* MAIN */
main {
  flex: 1;
  position: relative;
  z-index: 1;
}

/* PAGE HERO */
.page-hero {
  padding: 3.5rem 2rem 2.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  max-width: 700px;
  margin: 0 auto;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}

.page-hero h1 em {
  color: var(--accent);
  font-style: normal;
}

.page-hero p {
  color: var(--text-muted);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
}

/* TOOL CONTAINER */
.tool-wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

/* CARD */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.card-label {
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

/* FORM ELEMENTS */
label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  padding: 0.65rem 0.85rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23A89080' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

select option { background: var(--surface); }

.field { margin-bottom: 1.25rem; }
.field:last-child { margin-bottom: 0; }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* RESULT */
.result {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-top: 1.25rem;
}

.result-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.result-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 500;
  color: var(--accent);
}

.result-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* RANGE */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 3px;
  background: var(--surface2);
  border-radius: 2px;
  outline: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 0 3px var(--accent-glow);
}
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  cursor: pointer;
}

/* AFFILIATE BOX */
.affiliate-box {
  background: linear-gradient(135deg, var(--surface), var(--surface2));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.5rem;
}

.affiliate-box-text p:first-child {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.3rem;
}
.affiliate-box-text p:last-child {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.btn-affiliate {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition);
  flex-shrink: 0;
}
.btn-affiliate:hover {
  background: #B8890F;
  transform: translateY(-1px);
}

/* DISCLAIMER */
.affiliate-disclaimer {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  padding: 0.5rem 1rem;
  margin-top: 0.5rem;
  opacity: 0.6;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer-inner {
  max-width: 680px;
  margin: 0 auto;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.footer-logo span { color: var(--accent); }

footer p {
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.7;
  line-height: 1.7;
}

footer a {
  color: var(--accent-dim);
  text-decoration: none;
}
footer a:hover { color: var(--accent); }

/* STATUS BADGE */
.status-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.status-good { background: rgba(39,174,96,0.15); color: #2ECC71; border: 1px solid rgba(39,174,96,0.3); }
.status-warn { background: rgba(230,126,34,0.15); color: #E67E22; border: 1px solid rgba(230,126,34,0.3); }
.status-bad  { background: rgba(192,57,43,0.15);  color: #E74C3C; border: 1px solid rgba(192,57,43,0.3); }

/* MOBILE */
@media (max-width: 640px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 60px; left: 0; right: 0; background: rgba(28,15,10,0.98); border-bottom: 1px solid var(--border); padding: 0.5rem 0; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.6rem 2rem; }
  .hamburger { display: flex; }
  .field-row { grid-template-columns: 1fr; }
  .affiliate-box { flex-direction: column; align-items: flex-start; }
  .tool-wrap { padding: 1.5rem 1rem; }
  .page-hero { padding: 2.5rem 1rem 2rem; }
}