/* ============================================================
   UPSQUARE TECHNOLOGIES — custom.css
   Design System: Inter (display) + JetBrains Mono (technical)
   Accent: Cobalt Blue #0047AB | Background: #0A0A0A | Text: #F5F5F5
   ============================================================ */

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

/* ─── VARIABLES ─── */
:root {
  --cobalt: #ED662B;
  --cobalt-light: #FF7E46;
  --cobalt-dim: rgba(0, 71, 171, 0.12);
  --cobalt-border: rgba(0, 71, 171, 0.35);
  --ink: #0A0A0A;
  --ink-mid: #111111;
  --ink-surface: #161616;
  --ink-raised: #1e1e1e;
  --border: #232323;
  --border-light: #2e2e2e;
  --canvas: #F5F5F5;
  --canvas-dim: rgba(245, 245, 245, 0.55);
  --canvas-muted: rgba(245, 245, 245, 0.3);
  --mono-xs: 11px;
  --mono-sm: 12px;
  --mono-base: 14px;
  --mono-md: 14px;
  --font-mono: "JetBrains Mono", monospace;
  --font-display: "Inter", sans-serif;
}

/* ─── BASE ─── */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--canvas);
  color: var(--ink);
  font-family: var(--font-display);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

img {
  display: block;
  max-width: 100%;
}

/* ─── UTILITIES ─── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 120px 0;
  border-top: 1px solid var(--canvas-muted);
  position: relative;
}

/* ─── EYEBROW ─── */
.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.eyebrow-num {
  font-family: "JetBrains Mono", monospace;
  font-size: var(--mono-xs);
  color: var(--cobalt);
  letter-spacing: 0.2em;
}

.eyebrow-text {
  font-family: "JetBrains Mono", monospace;
  font-size: var(--mono-xs);
  color: var(--ink);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ─── SECTION H2 ─── */
.section-h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 48px);
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.1;
  margin-bottom: 56px;
  text-align: center;
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--mono-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 16px 32px;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn--primary {
  background-color: var(--cobalt);
  color: var(--canvas);
  border-color: var(--cobalt);
}

.btn--primary:hover {
  background-color: var(--cobalt-light);
  border-color: var(--cobalt-light);
}



/* ─── HERO ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  justify-content: center;
}

.hero .container {
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero-inner {
  /* max-width: 820px; */
  text-align: center;
}

.hero-logo {
  margin: 0 auto 48px;
}

.hero-tag {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
  font-family: var(--font-mono);
  font-size: var(--mono-xs);
  color: var(--ink);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  justify-content: center;
}

.tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--cobalt);
  flex-shrink: 0;
}

.hero-h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(48px, 8vw, 72px);
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 28px;
  text-align: center;
}

.hero-subtitle {
  font-family: var(--font-mono);
  font-size: var(--mono-base);
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: 48px;
  text-transform: uppercase;
  text-align: center;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 71, 171, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 71, 171, 0.045) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: linear-gradient(to bottom, black 70%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, black 70%, transparent 100%);
  z-index: 1;
  pointer-events: none;
}
.gold-line-v {
    width: 1px;
    height: 150px;
    background: linear-gradient(to bottom, var(--cobalt), transparent);
    position: absolute;
    bottom: 25px;
}

.hero-btn {
  margin: 0 auto;
}

/* Subpage hero variant */
.hero--subpage {
  min-height: 80vh;
}

.join-pitch {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.85;
  color: var(--canvas-dim);
  border-left: 2px solid var(--cobalt);
  padding-left: 24px;
  margin-top: 32px;
  max-width: 680px;
}

/* ─── DUAL ENGINE ─── */
.engine-section {
  padding: 40px;
}

.engine-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.engine-card {
  padding: 10px 40px;
  border-right: 1px solid rgba(0, 0, 0, 0.08);
  text-align: center;
}

.engine-card:last-child {
  border: none;
}

.engine-label {
  color: var(--cobalt);
  margin-bottom: 14px;
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
  font-size: var(--mono-base);
}

.engine-sub-title {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--ink);
  text-transform: uppercase;
  text-align: center;
}

.engine-logo {
  margin: 40px auto 40px;
}

.engine-action {
  display: inline-block;
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font-mono);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  transition: all 0.4s ease;
}

.engine-action:hover {
  border-color: var(--ink);
}

/* ─── CHAIN OF COMMAND ─── */
.command-tiers {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.command-tier {
  background-color: transparent;
  padding: 0;
}

.tier-label {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cobalt);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 20px;
  padding-bottom: 0;
  border-bottom: none;
  text-align: center;
}

.tier-members {
  display: flex;
  flex-direction: row;
  padding-top: 20px;
  text-align: center;
  justify-content: center;
}

.member {
  display: flex;
  flex-direction: column;
  flex: 0 0 auto;
  justify-content: center;
  border-right: 1px solid rgba(0, 0, 0, 0.08);
  padding: 0 40px;
}

.member:last-child {
  border: none;
}

.member-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  color: var(--ink);
  line-height: 1.4;
  padding-bottom: 10px;
}

.member-role {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink-raised);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.4;
  max-width: 250px;
}

/* ─── TALENT GATE ─── */
.talent {
  background-color: var(--canvas);
  padding-bottom: 100px;
}

.talent-inner {
  text-align: center;
}

.talent .section-h2 {
  text-align: center;
  margin-bottom: 48px;
}

.talent-copy {
  color: var(--ink-raised);
  max-width: 620px;
  text-align: center;
  margin: 0 auto 48px;
  font-family: var(--font-mono);
  font-size: var(--mono-base);
}



/* ─── JOIN: ETHOS ─── */
.ethos-grid {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background-color: var(--border);
}

.ethos-item {
  background-color: var(--ink-surface);
  padding: 40px 48px;
  display: flex;
  gap: 40px;
  align-items: flex-start;
  transition: background-color 0.2s ease;
}

.ethos-item:hover {
  background-color: var(--ink-raised);
}

.ethos-id {
  font-family: var(--font-mono);
  font-size: var(--mono-xs);
  color: var(--cobalt);
  letter-spacing: 0.15em;
  flex-shrink: 0;
  margin-top: 4px;
  width: 36px;
}

.ethos-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ethos-title {
  font-family: var(--font-mono);
  font-size: var(--mono-base);
  font-weight: 500;
  color: var(--canvas);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.ethos-desc {
  font-size: 14px;
  color: var(--canvas-dim);
  line-height: 1.85;
  max-width: 640px;
}

/* ─── JOIN: OPEN PROTOCOLS ─── */
.protocol-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background-color: var(--border);
}

.protocol-item {
  background-color: var(--ink-surface);
  padding: 36px 48px 40px;
  transition: background-color 0.2s ease;
}

.protocol-item:hover {
  background-color: var(--ink-raised);
}

.protocol-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.protocol-status {
  font-family: var(--font-mono);
  font-size: var(--mono-xs);
  color: #22c55e;
  letter-spacing: 0.15em;
  border: 1px solid rgba(34, 197, 94, 0.3);
  padding: 3px 10px;
}

.protocol-node {
  font-family: var(--font-mono);
  font-size: var(--mono-xs);
  color: var(--cobalt);
  letter-spacing: 0.15em;
  border: 1px solid var(--cobalt-border);
  padding: 3px 10px;
}

.protocol-title {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 18px;
  color: var(--canvas);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.protocol-meta {
  margin-bottom: 24px;
}

.protocol-location {
  font-family: var(--font-mono);
  font-size: var(--mono-xs);
  color: var(--canvas-muted);
  letter-spacing: 0.1em;
}

.protocol-apply {
  font-family: var(--font-mono);
  font-size: var(--mono-xs);
  color: var(--cobalt);
  letter-spacing: 0.12em;
  border: 1px solid var(--cobalt-border);
  padding: 10px 20px;
  display: inline-block;
}

.protocol-apply:hover {
  background-color: var(--cobalt);
  color: var(--canvas);
  border-color: var(--cobalt);
}

/* ─── JOIN: THE GATE (CTA) ─── */
.gate {
  background-color: var(--ink-surface);
}

.gate-inner {
  max-width: 680px;
}

.gate-copy {
  font-size: 16px;
  color: var(--canvas-dim);
  line-height: 1.85;
  margin-bottom: 40px;
}

/* ─── FOOTER ─── */
.footer {
  background-color: var(--canvas);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  padding: 28px 0;
}

.footer-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-strip-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-strip-right {
  display: flex;
  align-items: center;
}

.footer-strip-line {
  font-family: var(--font-mono);
  font-size: var(--mono-xs);
  color: var(--ink);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-strip-val {
  color: var(--ink);
}

.footer-strip-val--active {
  color: var(--cobalt);
}


/* ─── RESPONSIVE: TABLET ─── */
@media (max-width: 960px) {
  .container {
    padding: 0 36px;
  }

  .nav-container {
    padding: 0 36px;
  }

  .section {
    padding: 80px 0;
  }

  .engine-grid {
    grid-template-columns: 1fr;
  }

  .command-tiers {
    grid-template-columns: 1fr;
  }

  .command-tier {
    padding: 0 10px;
  }

  .footer-ledger {
    grid-template-columns: 1fr 1fr;
  }

  .ethos-item {
    padding: 32px 36px;
    gap: 24px;
  }

  .protocol-item {
    padding: 28px 36px 32px;
  }
  .tier-members {
    flex-direction: column;
  }
  .member{
    align-items: center;
    padding: 16px 0;
    border-right: none;
  }

  .command-tiers{
    gap: 40px;
  }
  .tier-label{
    margin-bottom: 0;
  }
  .engine-card{
    padding: 30px 10px;
    border-right: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  }
  .engine-card:last-child{
    border-bottom: none;
  }
  .footer-strip {
    flex-direction: column;
    gap: 12px;
  }
}

/* ─── RESPONSIVE: MOBILE ─── */
@media (max-width: 600px) {
  .container {
    padding: 0 20px;
  }

  .nav-container {
    padding: 0 20px;
  }

  .nav-links {
    gap: 20px;
  }

  .nav-logo-text {
    display: none;
  }

  .section {
    padding: 64px 0;
  }

  .hero-h1 {
    font-size: clamp(40px, 8vw, 64px);
    margin-bottom: 48px;
  }

  .engine-card-top,
  .engine-card-body,
  .engine-card-footer {
    padding-left: 24px;
    padding-right: 24px;
  }

  .engine-card-divider {
    margin: 0 24px;
  }

  .ethos-item {
    flex-direction: column;
    gap: 12px;
    padding: 28px 20px;
  }

  .protocol-item {
    padding: 24px 20px 28px;
  }

  .footer-ledger {
    grid-template-columns: 1fr;
  }

  .footer-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .hero-scroll-line {
    left: 20px;
  }
}