/* =========================================================
   BEOMONNURI — MOBILE LAYER
   Hamburger nav + responsive fixes for tablet/phone.
   Loaded AFTER all other CSS to override.
   ========================================================= */

/* ===== Hamburger button — hidden on desktop, visible on mobile ===== */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 110;
  align-items: center;
  justify-content: center;
}
.nav-hamburger .bars {
  position: relative;
  width: 22px;
  height: 14px;
}
.nav-hamburger .bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--paper);
  transition: transform 0.35s cubic-bezier(.6,0,.1,1),
              opacity 0.25s,
              top 0.35s cubic-bezier(.6,0,.1,1),
              background 0.2s;
}
.nav-hamburger .bars span:nth-child(1) { top: 0; }
.nav-hamburger .bars span:nth-child(2) { top: 6px; }
.nav-hamburger .bars span:nth-child(3) { top: 12px; }

/* Open state — turns into X */
body.nav-open .nav-hamburger .bars span:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
  background: #fff;
}
body.nav-open .nav-hamburger .bars span:nth-child(2) {
  opacity: 0;
  background: #fff;
}
body.nav-open .nav-hamburger .bars span:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
  background: #fff;
}

/* ===== Mobile fullscreen menu (hidden by default) ===== */
.mobile-menu {
  display: none;          /* shown on mobile via media query below */
  position: fixed;
  inset: 0;
  z-index: 105;
  background: var(--paper);
  color: var(--bg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-30px);
  transition: opacity 0.4s cubic-bezier(.6,0,.1,1),
              transform 0.45s cubic-bezier(.6,0,.1,1),
              visibility 0s linear 0.45s;
  overflow-y: auto;
}
body.nav-open .mobile-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition-delay: 0s;
}
.mobile-menu::before {
  /* Subtle grid backdrop */
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(246,244,239,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246,244,239,0.04) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, #000, transparent 80%);
  pointer-events: none;
}
.mobile-menu-inner {
  position: relative;
  padding: 80px 24px 32px;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}
.mobile-menu-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--acid-bright);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.mobile-menu-label::before {
  content: '';
  width: 7px; height: 7px;
  background: var(--acid-bright);
  border-radius: 50%;
  animation: blink 1.4s ease-in-out infinite;
  box-shadow: 0 0 0 3px rgba(196,26,63,0.25);
}
.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 40px;
}
.mobile-menu nav a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 18px 0;
  font-family: var(--display);
  font-size: clamp(32px, 9vw, 56px);
  letter-spacing: -0.035em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--bg);
  text-decoration: none;
  border-bottom: 1px solid rgba(246,244,239,0.12);
  transition: padding-left 0.3s cubic-bezier(.6,0,.1,1),
              color 0.2s;
  position: relative;
  /* Stagger entrance animation when menu opens */
  opacity: 0;
  transform: translateX(-12px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(.6,0,.1,1), color 0.2s, padding-left 0.3s;
}
body.nav-open .mobile-menu nav a {
  opacity: 1;
  transform: translateX(0);
}
body.nav-open .mobile-menu nav a:nth-child(1) { transition-delay: 0.08s; }
body.nav-open .mobile-menu nav a:nth-child(2) { transition-delay: 0.14s; }
body.nav-open .mobile-menu nav a:nth-child(3) { transition-delay: 0.20s; }
body.nav-open .mobile-menu nav a:nth-child(4) { transition-delay: 0.26s; }
body.nav-open .mobile-menu nav a:nth-child(5) { transition-delay: 0.32s; }

.mobile-menu nav a:hover {
  padding-left: 12px;
  color: var(--acid-bright);
}
.mobile-menu nav a.active {
  color: var(--acid-bright);
}
.mobile-menu nav a .num {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: rgba(246,244,239,0.4);
}

.mobile-menu .cta-row {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid rgba(246,244,239,0.12);
}
.mobile-menu .cta-row a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
  background: var(--acid);
  color: #fff;
  padding: 22px 24px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.2s;
}
.mobile-menu .cta-row a:hover {
  background: var(--acid-bright);
}
.mobile-menu .meta-row {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(246,244,239,0.45);
}
.mobile-menu .meta-row .live::before {
  content: '◉';
  color: var(--acid-bright);
  margin-right: 6px;
  animation: blink 1.4s ease-in-out infinite;
}

/* ===== Show on mobile / hide on desktop ===== */
@media (max-width: 900px) {
  .nav-hamburger { display: inline-flex; }
  .mobile-menu { display: block; }
  /* Hide default nav links on mobile (keep brand + CTA accessible via hamburger) */
  nav.top .nav-links { display: none; }
  /* Ensure brand stays */
  nav.top .row {
    align-items: center;
    justify-content: space-between;
  }
}

/* ===== Lock scroll when menu is open ===== */
body.nav-open {
  overflow: hidden;
}

/* ===== Mobile responsive fixes ===== */

/* Tablet (700-1100px) */
@media (max-width: 1100px) and (min-width: 701px) {
  .container { padding: 0 24px; }
  /* Hero: 4-cell -> 2-cell already handled, but enforce hero-bottom layout */
  .hero h1 { font-size: clamp(56px, 10vw, 120px); }
  /* HUD: keep visible but smaller */
  .hud {
    top: 80px;
    right: 20px;
    min-width: 200px;
    font-size: 10px;
    padding: 12px 14px;
  }
  /* 3D Cylinder: smaller perspective */
  .partner-cylinder {
    height: 200px;
    perspective: 1000px;
  }
  /* LLM terminal: full width */
  .llm-terminal {
    max-width: 100%;
  }
}

/* Phone (<=700px) */
@media (max-width: 700px) {
  .container { padding: 0 20px; }

  /* Hero h1 — tighter clamp */
  .hero h1 {
    font-size: clamp(44px, 12vw, 72px);
    margin-top: 28px;
  }
  /* Hide HUD on phones (already in v5) */
  .hud { display: none; }
  /* System bar */
  .system-bar { display: none; }
  /* Glass orbs — lighter or hide */
  #glass-orbs { display: none; }
  /* Hero canvas: keep, but Three.js may struggle — leave on for now */

  /* Hero bottom: 4-col -> 1-col stack */
  .hero-bottom {
    grid-template-columns: 1fr !important;
    margin-top: 36px !important;
  }
  .hb-cell {
    border-right: 0 !important;
    border-bottom: 1px solid var(--mute-line);
  }
  .hb-cell:last-child { border-bottom: 0; }

  /* Top hero text size */
  .hero-top { font-size: 9.5px; flex-direction: column; gap: 6px; align-items: flex-start; }
  .hero-top .live-tag { font-size: 9.5px; }

  /* LLM terminal */
  .llm-terminal {
    margin-top: 24px;
    max-width: 100%;
  }
  .llm-terminal .lt-bar {
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
  }
  .llm-terminal .lt-input input { font-size: 14px; }
  .llm-terminal .lt-suggest button { font-size: 9px; }

  /* Sections: tighter padding */
  section { padding: 70px 0; }
  .sect-head { margin-bottom: 36px; gap: 16px; }
  .sect-head h2 { font-size: clamp(34px, 9vw, 56px); }

  /* Products grid */
  .svc-grid { grid-template-columns: 1fr !important; gap: 1px; }
  .svc {
    min-height: 280px;
    padding: 30px 24px 24px;
  }
  .svc h3 { font-size: 26px; }
  .svc .big-arrow { font-size: 28px; top: 24px; right: 24px; }

  /* Page hero */
  .page-hero {
    padding: 100px 0 60px;
  }
  .page-hero h1 {
    font-size: clamp(44px, 13vw, 84px);
  }
  .page-hero .lead { font-size: 15px; }
  .page-hero-meta {
    grid-template-columns: 1fr !important;
  }
  .page-hero-meta > div {
    border-right: 0 !important;
    border-bottom: 1px solid var(--mute-line);
  }
  .page-hero-meta > div:last-child { border-bottom: 0; }

  /* Product detail */
  .prod-detail { padding: 60px 0; }
  .prod-detail .pd-head { grid-template-columns: 1fr !important; gap: 16px; }
  .prod-detail h2 { font-size: clamp(36px, 11vw, 60px); }
  .prod-detail .pd-grid { grid-template-columns: 1fr !important; }
  .prod-detail .pd-cell {
    border-right: 0 !important;
    border-bottom: 1px solid var(--mute-line);
    min-height: auto;
  }
  .prod-detail .pd-cell:last-child { border-bottom: 0; }
  .prod-detail .pd-cell.metric .mv {
    font-size: clamp(40px, 12vw, 60px);
  }

  /* Intel cell */
  .intel-grid { grid-template-columns: 1fr !important; }
  .intel-cell.large { grid-row: span 1 !important; grid-column: span 1 !important; }
  .intel-cell .ic-value { font-size: clamp(32px, 9vw, 48px); }

  /* How / Method */
  .how-grid { grid-template-columns: 1fr !important; }
  .how-cell {
    border-right: 0 !important;
    border-bottom: 1px solid var(--mute-line);
    min-height: auto;
    padding: 30px 24px;
  }
  .how-cell:last-child { border-bottom: 0; }
  .how-cell h3 { font-size: 22px; }

  /* Rollout (Why / Cases) */
  .roll-row-v4 {
    grid-template-columns: 1fr !important;
    gap: 8px;
    padding: 20px 0;
  }
  .roll-row-v4 .rr-num { font-size: 28px; }
  .roll-row-v4 .rr-title { font-size: 18px; }
  .roll-row-v4 .rr-desc { font-size: 13.5px; }
  .roll-row-v4 .rr-tag {
    justify-content: flex-start;
  }
  .roll-row-v4:hover {
    padding-left: 8px;
  }

  /* Security grid */
  .sec-grid-v4 { grid-template-columns: 1fr !important; }

  /* Case grid */
  .case-grid-v4 { grid-template-columns: 1fr !important; gap: 1px; }
  .case-card-v4 {
    padding: 28px 24px;
    min-height: 220px;
  }
  .case-card-v4 h3 { font-size: 22px; }
  .case-card-v4 .cstat { font-size: 36px; }

  /* Principles (Why) */
  .principle-grid { grid-template-columns: 1fr !important; }
  .principle-cell {
    min-height: auto;
    padding: 32px 24px;
  }
  .principle-cell h3 { font-size: 36px; }

  /* Contact form */
  .contact-grid { grid-template-columns: 1fr !important; gap: 30px; }
  .contact-left h2 { font-size: clamp(56px, 18vw, 88px); }
  .cf-row {
    grid-template-columns: 1fr !important;
    gap: 8px;
    padding: 18px 0;
  }
  .cf-row .cf-label { padding-top: 0; font-size: 10px; }

  /* Contact info */
  .contact-info { padding: 40px 0; }
  .contact-info-grid {
    grid-template-columns: 1fr !important;
    gap: 24px;
  }

  /* 3D Cylinder — lighter on phones */
  .partner-cylinder {
    height: 160px;
    perspective: 700px;
  }
  .cylinder-face {
    width: 200px;
    height: 90px;
    left: -100px;
    top: -45px;
    padding: 0 14px;
    gap: 10px;
  }
  .cylinder-face svg { width: 44px; height: 44px; }
  .cylinder-face .meta .name { font-size: 13px; }

  /* Manifesto */
  .manifesto { padding: 80px 0; }
  .mf-text { font-size: clamp(34px, 10vw, 60px); }
  .mf-sign {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    margin-top: 40px;
  }
  .mf-sign .num { font-size: 56px; }

  /* Footer */
  footer { padding: 50px 0 28px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr !important;
    gap: 32px !important;
  }
  .footer-grid > div:first-child { grid-column: span 2; }
  .ft-bottom-row {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 8px !important;
    text-align: left !important;
    font-size: 10.5px;
  }

  /* Pipeline */
  .pipe-canvas-wrap { margin-top: 20px; }
  #pipe-canvas { height: 160px; }
  .pipe-labels { grid-template-columns: 1fr 1fr; }
  .pipe-labels > div {
    border-right: 1px dashed var(--mute-line);
    border-bottom: 1px dashed var(--mute-line);
    padding: 14px 16px;
  }
  .pipe-labels > div:nth-child(2n) { border-right: 0; }
  .pipe-labels > div:nth-last-child(-n+2) { border-bottom: 0; }
  .pipe-labels .v { font-size: 16px; }

  /* AI widget on phone */
  .ai-widget {
    width: calc(100vw - 24px);
    right: 12px;
    bottom: 12px;
  }

  /* Hide thinking strip on small phones — too noisy */
  .thinking-strip {
    font-size: 9.5px;
    padding: 8px 0;
  }

  /* Status orb tighter */
  .status-orb {
    bottom: 12px;
    left: 12px;
    padding: 7px 10px;
    font-size: 9px;
  }
  /* When AI widget is in foreground, hide status orb to avoid overlap */
  .ai-widget.open ~ .status-orb,
  body:has(.ai-widget.open) .status-orb {
    opacity: 0.3;
  }

  /* Compare table — make scrollable */
  .compare-table {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .compare-table table {
    min-width: 600px;
    font-size: 12.5px;
  }
  .compare-table th, .compare-table td { padding: 12px 14px; }
}

/* Very narrow phones (<= 400px) */
@media (max-width: 400px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: clamp(38px, 13vw, 56px); }
  .page-hero h1 { font-size: clamp(38px, 14vw, 64px); }
  .hero-top { font-size: 9px; }
}

/* Landscape phone — keep menu single column but tighten */
@media (max-width: 900px) and (orientation: landscape) and (max-height: 500px) {
  .mobile-menu-inner { padding-top: 60px; }
  .mobile-menu nav a {
    font-size: clamp(24px, 5vw, 36px);
    padding: 10px 0;
  }
}

/* ===== Prefer reduced motion ===== */
@media not all and (prefers-reduced-motion: reduce) {
  .mobile-menu,
  .mobile-menu nav a,
  .nav-hamburger .bars span {
    transition-duration: 0.01ms !important;
  }
}