/* OG-tools — MetricBase brand system.
   Mirrors metricbase.org architecture: fixed nav, hero with pills, credibility
   strip, section-label sections, hairline-grid cards, multi-column footer with
   mobile accordion, hamburger drawer, back-to-top, scroll progress.
   All colors via :root tokens — no hardcoded color values outside this block. */

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

:root {
  --black:  #0a0a0a;
  --dark:   #111111;
  --mid:    #1a1a1a;
  --border: #222222;
  --muted:  #555555;
  --subtle: #888888;
  --light:  #cccccc;
  --white:  #f5f5f5;
  --accent: #e8e0d0;
  --gold:   #c9a84c;
  --gold-2: #d4b460;
  --danger: #d4524a;
  --sans:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono:   ui-monospace, SFMono-Regular, Menlo, Consolas, 'Roboto Mono', monospace;
}

html { scroll-behavior: smooth; overflow-x: clip; }

body {
  font-family: var(--sans);
  background: var(--black);
  color: var(--light);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
img, svg { max-width: 100%; height: auto; display: block; }

/* ─── NAV ──────────────────────────────────────────────── */
#mb-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  background: rgba(10, 10, 10, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  height: 58px;
  display: flex;
  align-items: center;
  padding: 0 32px;
  justify-content: space-between;
}

.mb-nav-left { display: flex; align-items: center; gap: 24px; }

.mb-logo {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
}

.mb-logo span { color: var(--gold); }

.mb-nav-divider {
  width: 1px;
  height: 18px;
  background: var(--border);
  flex-shrink: 0;
}

.mb-nav-section {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
}

.mb-nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.mb-nav-links a {
  font-size: 13px;
  color: var(--subtle);
  letter-spacing: 0.03em;
  transition: color 0.18s;
}

.mb-nav-links a:hover { color: var(--white); }

.mb-nav-right { display: flex; align-items: center; gap: 16px; }

.mb-nav-cta {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--gold);
  padding: 8px 18px;
  border-radius: 2px;
  transition: background 0.18s;
  white-space: nowrap;
}

.mb-nav-cta:hover { background: var(--gold-2); }

.mb-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
  -webkit-tap-highlight-color: transparent;
}

.mb-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--light);
  border-radius: 1px;
  transition: 0.25s;
  transform-origin: center;
}

.mb-hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mb-hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.mb-hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── PROGRESS BAR ─────────────────────────────────────── */
#mb-progress {
  position: fixed;
  top: 58px; left: 0;
  height: 2px;
  background: var(--gold);
  width: 0%;
  z-index: 195;
  transition: width 0.1s linear;
}

/* ─── DRAWER ───────────────────────────────────────────── */
#mb-drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 180;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

#mb-drawer-overlay.open { display: block; }

#mb-drawer {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: min(300px, 85vw);
  background: var(--dark);
  border-right: 1px solid var(--border);
  z-index: 190;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}

#mb-drawer.open { transform: translateX(0); }

.mb-drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.mb-drawer-logo {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
}

.mb-drawer-logo span { color: var(--gold); }

.mb-drawer-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--subtle);
  font-size: 22px;
  line-height: 1;
  transition: color 0.2s;
}

.mb-drawer-close:hover { color: var(--white); }

.mb-drawer-section {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.mb-drawer-label {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  padding: 8px 20px 4px;
  display: block;
}

.mb-drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  font-size: 15px;
  color: var(--light);
  transition: background 0.15s, color 0.15s;
  min-height: 48px;
}

.mb-drawer-link:hover, .mb-drawer-link:active {
  background: var(--mid);
  color: var(--white);
}

.mb-drawer-link span { font-size: 14px; color: var(--gold); }

.mb-drawer-cta {
  margin: 16px 20px;
  display: block;
  background: var(--gold);
  color: var(--black);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  padding: 14px;
  border-radius: 2px;
  transition: background 0.18s;
  margin-top: auto;
}

.mb-drawer-cta:hover { background: var(--gold-2); }

/* ─── LAYOUT ──────────────────────────────────────────── */
.mb-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

#mb-body { margin-top: 58px; }

section { padding: 80px 0; }

/* ─── REVEAL ──────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ─── SECTION LABELS ──────────────────────────────────── */
.section-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--gold);
  flex-shrink: 0;
}

h2 {
  font-size: clamp(22px, 3.8vw, 38px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.section-sub {
  color: var(--subtle);
  margin-bottom: 36px;
  font-size: 15px;
  line-height: 1.7;
  max-width: 640px;
}

/* ─── HERO ────────────────────────────────────────────── */
#portal-hero {
  padding: 96px 0 80px;
  text-align: center;
}

.hero-tagline {
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
  display: block;
}

.hero-wordmark {
  font-size: clamp(42px, 8vw, 88px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--white);
  line-height: 1;
  margin-bottom: 20px;
}

.hero-wordmark span { color: var(--gold); }

.hero-sub {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--subtle);
  max-width: 520px;
  margin: 0 auto 44px;
  font-weight: 400;
  line-height: 1.65;
}

.hero-pills {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--light);
  background: var(--mid);
  border: 1px solid var(--border);
  padding: 9px 18px;
  border-radius: 2px;
  transition: border-color 0.18s, color 0.18s, background 0.18s;
  white-space: nowrap;
  cursor: pointer;
}

.hero-pill:hover {
  border-color: var(--gold);
  color: var(--white);
  background: #1f1f1f;
}

.hero-pill-arrow { color: var(--gold); font-size: 13px; }

/* ─── CREDIBILITY STRIP ───────────────────────────────── */
#strip {
  padding: 26px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--dark);
}

.strip-inner {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.strip-item {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.strip-dot {
  width: 5px;
  height: 5px;
  background: var(--gold);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ─── CALCULATOR SECTIONS ─────────────────────────────── */
.calc-section { background: var(--black); }
.calc-section.alt { background: var(--dark); }

/* Tab bar — sticky below nav */
#mb-tabs {
  position: sticky;
  top: 58px;
  z-index: 90;
  background: rgba(10, 10, 10, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.mb-tabs-inner {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.mb-tabs-inner::-webkit-scrollbar { display: none; }

.tab-btn {
  flex: 0 0 auto;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--subtle);
  padding: 16px 18px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  font-family: var(--sans);
  transition: color 0.18s, border-color 0.18s;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

.tab-btn:hover { color: var(--light); }

.tab-btn.is-active {
  color: var(--white);
  border-bottom-color: var(--gold);
}

.tab-btn:focus-visible { outline: 1px solid var(--gold); outline-offset: -1px; }

.tab-btn .tab-num {
  color: var(--gold);
  margin-right: 8px;
  font-weight: 700;
}

/* Panels — only the active one shows */
.calc-section.panel { display: none; }
.calc-section.panel.is-active { display: block; }

/* Hairline grid: 1px gap, border background shows through */
.calc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 40px;
}

.calc-grid.cols-1 { grid-template-columns: 1fr; }
.calc-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }

.calc-card {
  background: var(--dark);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: background 0.18s;
  position: relative;
}

.calc-section.alt .calc-card { background: var(--mid); }
.calc-card:hover { background: var(--mid); }
.calc-section.alt .calc-card:hover { background: #1f1f1f; }

.calc-card-eyebrow {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
  display: block;
}

.calc-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 18px;
  line-height: 1.2;
}

/* ─── FORM CONTROLS ───────────────────────────────────── */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.field-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--subtle);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 14px;
}

@media (min-width: 540px) {
  .field-row.cols-2 { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 720px) {
  .field-row.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
  .field-row.cols-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
}

.input,
.select {
  width: 100%;
  background: var(--mid);
  color: var(--white);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 11px 12px;
  font-family: var(--mono);
  font-size: 14px;
  outline: none;
  transition: border-color 0.18s;
  -webkit-appearance: none;
  appearance: none;
}

.select {
  font-family: var(--sans);
  font-size: 13px;
  background-image: linear-gradient(45deg, transparent 50%, var(--gold) 50%),
                    linear-gradient(135deg, var(--gold) 50%, transparent 50%);
  background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 32px;
}

.input::placeholder { color: var(--muted); }

.input:focus, .select:focus { border-color: var(--gold); }

.input[readonly] {
  background: var(--black);
  color: var(--accent);
}

/* Combined input+unit "field group" — looks like the subscribe-form */
.field-group {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.field-group:focus-within { border-color: var(--gold); }

.field-group .input {
  flex: 1;
  border: none;
  border-radius: 0;
  border-right: 1px solid var(--border);
  background: var(--mid);
  min-width: 0;
}

.field-group .select {
  flex: 0 0 auto;
  width: auto;
  min-width: 110px;
  border: none;
  border-radius: 0;
  background-color: var(--dark);
}

/* Action button — gold pill */
.btn {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--gold);
  color: var(--black);
  border: none;
  padding: 11px 20px;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.18s;
  font-family: var(--sans);
  -webkit-tap-highlight-color: transparent;
}

.btn:hover { background: var(--gold-2); }

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

.btn-ghost:hover { background: var(--gold); color: var(--black); }

/* Result display */
.result {
  margin: 14px 0 0;
  padding: 11px 14px;
  background: var(--black);
  border: 1px solid var(--border);
  border-left: 2px solid var(--gold);
  font-family: var(--mono);
  font-size: 14px;
  color: var(--white);
  min-height: 1.4rem;
  border-radius: 2px;
}

.result + .result { margin-top: 8px; }
.result-label { color: var(--subtle); margin-right: 6px; }
.result-value { color: var(--gold); font-weight: 600; }

.hint {
  margin-top: 12px;
  font-size: 11px;
  color: var(--muted);
  font-family: var(--mono);
  letter-spacing: 0.02em;
  line-height: 1.55;
}

/* ─── FOOTER ──────────────────────────────────────────── */
#mb-footer {
  background: var(--dark);
  border-top: 1px solid var(--border);
}

.mb-footer-nl {
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.mb-footer-nl-text h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}

.mb-footer-nl-text p { font-size: 13px; color: var(--muted); margin: 0; }

.mb-footer-nl-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.mb-footer-main { padding: 44px 0 28px; }

.mb-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.mb-footer-brand .brand-name {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 10px;
}

.mb-footer-brand .brand-name span { color: var(--gold); }

.mb-footer-brand p { font-size: 13px; color: var(--muted); line-height: 1.65; margin-bottom: 16px; }

.mb-footer-tagline {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  padding: 5px 10px;
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: 2px;
}

.mb-footer-col-head {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--subtle);
  margin-bottom: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: default;
}

.mb-footer-col-head .toggle-icon { display: none; }

.mb-footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mb-footer-col li a {
  font-size: 13px;
  color: var(--muted);
  transition: color 0.18s, padding-left 0.18s;
  display: inline-block;
}

.mb-footer-col li a:hover { color: var(--white); padding-left: 4px; }

.mb-footer-bottom {
  padding: 20px 0;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.mb-footer-copy { font-size: 12px; color: var(--muted); }

.mb-footer-legal { display: flex; gap: 20px; flex-wrap: wrap; }

.mb-footer-legal a { font-size: 12px; color: var(--muted); transition: color 0.18s; }

.mb-footer-legal a:hover { color: var(--subtle); }

/* ─── DISCLAIMER STRIP ────────────────────────────────── */
#mb-disclaimer {
  background: var(--dark);
  border-top: 1px solid var(--border);
  padding: 16px 0;
}

#mb-disclaimer p {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.65;
  text-align: center;
}

#mb-disclaimer a {
  color: var(--gold);
  border-bottom: 1px solid rgba(201, 168, 76, 0.3);
}

/* ─── BACK TO TOP ─────────────────────────────────────── */
#mb-back-top {
  position: fixed;
  bottom: 28px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--mid);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 18px;
  color: var(--subtle);
  z-index: 150;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.3s, transform 0.3s, border-color 0.2s, color 0.2s;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

#mb-back-top.visible { opacity: 1; transform: translateY(0); }
#mb-back-top:hover { border-color: var(--gold); color: var(--gold); }

/* ─── TABLET ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .calc-grid          { grid-template-columns: 1fr; gap: 0; }
  .calc-grid.cols-3   { grid-template-columns: 1fr; }
  .mb-footer-grid     { grid-template-columns: 1fr 1fr; gap: 28px; }
  .mb-footer-nl       { flex-direction: column; align-items: flex-start; gap: 20px; }
}

/* ─── MOBILE ──────────────────────────────────────────── */
@media (max-width: 640px) {
  .mb-nav-links    { display: none; }
  .mb-nav-cta      { display: none; }
  .mb-hamburger    { display: flex; }
  .mb-nav-section  { display: none; }
  .mb-nav-divider  { display: none; }

  #mb-nav { padding: 0 16px; }

  section { padding: 56px 0; }
  .mb-container { padding: 0 16px; }

  #portal-hero { padding: 64px 0 56px; }
  .hero-pills { gap: 8px; }

  .tab-btn { padding: 14px 14px; font-size: 10px; letter-spacing: 0.14em; }
  .tab-btn .tab-num { margin-right: 6px; }

  .calc-card { padding: 26px 20px; }

  .mb-footer-grid { grid-template-columns: 1fr; gap: 4px; }
  .mb-footer-main { padding: 28px 0 20px; }
  .mb-footer-bottom { flex-direction: column; align-items: flex-start; gap: 10px; }
  .mb-footer-legal { flex-wrap: wrap; gap: 10px; }
  .mb-footer-nl { padding: 28px 0; }

  .mb-footer-col-head {
    cursor: pointer;
    margin-bottom: 0;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
  }
  .mb-footer-col-head .toggle-icon {
    display: block;
    color: var(--gold);
    font-size: 14px;
    transition: transform 0.25s;
  }
  .mb-footer-col-head.open .toggle-icon { transform: rotate(45deg); }
  .mb-footer-col ul {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease;
  }
  .mb-footer-col ul.open { max-height: 260px; padding: 12px 0; }

  .strip-inner { gap: 18px; justify-content: flex-start; }

  #mb-back-top { bottom: 20px; right: 16px; }

  /* Larger touch targets, prevent iOS zoom on focus */
  .input, .select { font-size: 16px; padding: 12px 14px; }
}

@media (max-width: 390px) {
  .hero-wordmark { font-size: 36px; }
  h2 { font-size: 22px; }
}

@media (hover: none) {
  .calc-card:hover { background: var(--dark); }
  .calc-section.alt .calc-card:hover { background: var(--mid); }
  .mb-footer-col li a:hover { padding-left: 0; }
}

/* ─── ADSENSE ────────────────────────────────────────── */
ins.adsbygoogle { display: block; }

/* ─── SIDE RAIL AD LAYOUT ────────────────────────────── */
.mb-rail { display: none; }

@media (min-width: 1280px) {
  #mb-layout {
    display: flex;
    align-items: flex-start;
  }
  #mb-body {
    flex: 1;
    min-width: 0;
  }
  .mb-rail {
    display: block;
    width: 160px;
    flex-shrink: 0;
    position: sticky;
    top: 72px;
    padding: 24px 8px 0;
  }
}