/* ============================================================
   Quanshium AI Core Page-specific styles
   ============================================================ */

/* ── Hero ── */
.hero { position: relative; padding-top: 140px; padding-bottom: var(--space-9); overflow: hidden; }
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 72% 8%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 90% at 72% 8%, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute; top: -30%; right: -12%;
  width: 55vw; height: 80%;
  background: radial-gradient(ellipse closest-side, var(--quantum-glow), transparent 70%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }

/* Staggered load reveal (neutralised by the global reduced-motion rule) */
@keyframes hero-rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}
.hero h1 { animation: hero-rise 0.6s var(--ease) backwards; }
.hero .lead { animation: hero-rise 0.6s var(--ease) 0.08s backwards; }
.hero .btn-row { animation: hero-rise 0.6s var(--ease) 0.16s backwards; }
.hero-visual { animation: hero-rise 0.7s var(--ease) 0.24s backwards; }
.hero .trust-strip { animation: hero-rise 0.6s var(--ease) 0.32s backwards; }

/* ── Trust strip (recognitions, above the fold) ── */
.trust-strip {
  display: flex; align-items: baseline; gap: var(--space-5);
  margin-top: var(--space-8); padding-top: var(--space-5);
  border-top: 1px solid var(--border-subtle);
}
.trust-strip .ts-label {
  font-family: var(--font-mono); font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--text-on-dark-faint); flex-shrink: 0;
}
.trust-strip ul { display: flex; flex-wrap: wrap; gap: 0.5rem var(--space-5); }
.trust-strip li {
  font-family: var(--font-mono); font-size: 0.78rem;
  color: var(--text-on-dark-dim); white-space: nowrap;
}
@media (max-width: 700px) {
  .trust-strip { flex-direction: column; gap: var(--space-3); }
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: var(--space-7); align-items: center; }
@media (max-width: 980px) { .hero-grid { grid-template-columns: 1fr; } }

.hero h1 { font-size: var(--fs-display); line-height: 1.04; margin-bottom: var(--space-5); }
.hero .lead { font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--text-on-dark-dim); max-width: 560px; margin-bottom: var(--space-6); }
.hero .btn-row { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Hero device/visual panel */
.hero-visual {
  border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
  background: var(--navy-800);
  padding: var(--space-6);
}
.hv-label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-on-dark-faint); display: flex; justify-content: space-between; margin-bottom: var(--space-5); padding-bottom: var(--space-4); border-bottom: 1px solid var(--border-subtle); }
.hv-spec { display: grid; }
.hv-spec li { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding: 0.8rem 0; border-bottom: 1px solid var(--border-subtle); font-family: var(--font-mono); font-size: 0.82rem; }
.hv-spec li:last-child { border-bottom: none; }
.hv-spec li .k { color: var(--text-on-dark-faint); text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.7rem; }
.hv-spec li .v { color: var(--text-on-dark); text-align: right; }

/* ── Problem / threat ── */
.threat-card { border-color: var(--border-saffron); }
.threat-card .card__icon { color: var(--saffron-400); }

/* ── Split feature row ── */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-8); align-items: center; }
.split--rev > :first-child { order: 2; }
@media (max-width: 880px) { .split, .split--rev { grid-template-columns: 1fr; gap: var(--space-6); } .split--rev > :first-child { order: 0; } }
.feature-list { display: grid; gap: var(--space-3); margin-top: var(--space-5); }
.feature-list li { display: flex; gap: 0.75rem; align-items: flex-start; color: var(--text-on-dark-dim); }
.feature-list li svg { width: 20px; height: 20px; color: var(--green-500); flex-shrink: 0; margin-top: 2px; }
.section--paper .feature-list li { color: var(--text-on-light-dim); }

/* ── Product anatomy / subsystem diagram ── */
.anatomy { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }
@media (max-width: 760px) { .anatomy { grid-template-columns: 1fr; } }
.subsystem { border: 1px solid var(--border-subtle); border-radius: var(--radius-md); padding: var(--space-5); background: var(--surface-card); position: relative; }
.subsystem h4 { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--quantum-cyan); margin-bottom: var(--space-4); display: flex; align-items: center; gap: 0.5rem; }
.subsystem ul { display: grid; gap: 0.55rem; }
.subsystem li { display: flex; gap: 0.6rem; font-size: 0.88rem; color: var(--text-on-dark-dim); }
.subsystem li::before { content:'›'; color: var(--saffron-400); font-weight: 700; }

/* ── Flow steps ── */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); counter-reset: step; }
@media (max-width: 820px) { .flow { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .flow { grid-template-columns: 1fr; } }
.flow-step { position: relative; padding: var(--space-5); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); background: var(--surface-card); }
.flow-step::before { counter-increment: step; content: '0' counter(step); font-family: var(--font-display); font-size: 2.2rem; font-weight: 700; color: var(--navy-600); line-height: 1; display: block; margin-bottom: var(--space-3); }
.flow-step h4 { margin-bottom: var(--space-2); font-size: 1.05rem; }
.flow-step p { font-size: 0.88rem; }

/* ── Capability index (numbered editorial list) ── */
.cap-list { border-top: 1px solid var(--border-strong); }
.cap-item {
  display: grid;
  grid-template-columns: 4.5rem 260px 1fr;
  gap: var(--space-5);
  align-items: baseline;
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--border-subtle);
}
.cap-item .cap-num {
  font-family: var(--font-mono); font-size: 0.82rem;
  color: var(--saffron-400); letter-spacing: 0.08em;
}
.cap-item h3 { font-size: 1.15rem; }
.cap-item p { font-size: 0.95rem; max-width: 560px; }
@media (max-width: 760px) {
  .cap-item { grid-template-columns: 3rem 1fr; }
  .cap-item p { grid-column: 2; }
}

/* ── Verticals strip ── */
.vertical-card { text-align: left; }

/* ── Variant grid (solutions) ── */
.variant-card { display: flex; flex-direction: column; height: 100%; }
.variant-card .vc-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}
.variant-card .vc-code {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(0.95rem, 2.2vw, 1.15rem);
  color: var(--text-on-dark);
  line-height: 1.2;
  word-break: break-word;
}
.variant-card .vc-sector {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--quantum-cyan);
  margin-bottom: var(--space-3);
}
.variant-card p { font-size: 0.9rem; flex: 1; }

/* Stretch the card CTA so the whole card is clickable */
.variant-card .card__link {
  position: static;
  margin-top: auto;
  padding-top: var(--space-4);
}
.variant-card .card__link::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  z-index: 1;
}
.variant-card:hover { border-color: var(--border-strong); }
.variant-card:focus-within {
  outline: 2px solid var(--quantum-cyan);
  outline-offset: 3px;
}

/* Light surface: product codes must use dark text (not text-on-dark) */
.section--paper .variant-card .vc-code { color: var(--text-on-light); }
.section--paper .variant-card .vc-sector { color: var(--quantum-blue); }
.section--paper .variant-card:hover { border-color: var(--saffron-500); }
.section--paper .variant-card:focus-within { outline-color: var(--saffron-500); }

/* ── Stats band ── */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); text-align: center; }
@media (max-width: 760px) { .stats { grid-template-columns: 1fr 1fr; } }
.stat .num { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 700; color: var(--text-on-dark); line-height: 1; }
.stat .num .text-cyan { color: var(--quantum-cyan); }
.stat .lbl { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-on-dark-faint); margin-top: var(--space-2); }

/* ── Founders ── */
.founder { text-align: center; }
.founder .avatar {
  width: 112px; height: 112px; border-radius: 50%; margin: 0 auto var(--space-4);
  display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; font-size: 1.8rem;
  color: var(--text-on-dark); background: var(--navy-700);
  border: 1px solid var(--border-strong);
  overflow: hidden;
}
.founder .avatar img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.founder h4 { font-size: 1.1rem; margin-bottom: 0.2rem; }
.founder .role { font-family: var(--font-mono); font-size: 0.76rem; color: var(--quantum-cyan); text-transform: uppercase; letter-spacing: 0.06em; }
.founder .cred { font-size: 0.85rem; color: var(--text-on-dark-faint); margin-top: 0.4rem; }
.section--paper .founder .role { color: var(--quantum-blue); }
.section--paper .founder .cred { color: var(--text-on-light-dim); }

/* ── Defence mission tiles ── */
.mission-tile { padding: var(--space-6); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg); background: var(--surface-card); }
.mission-tile h3 { margin-bottom: var(--space-2); }
.mission-tile .m-tag { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-on-dark-faint); margin-bottom: var(--space-3); }
.mission-tile ul { display: grid; gap: 0.35rem; margin-top: var(--space-4); }
.mission-tile ul li { font-size: 0.88rem; color: var(--text-on-dark-dim); }
.mission-tile ul li::before { content: '· '; color: var(--text-on-dark-faint); }

/* ── Roadmap timeline ── */
.timeline { position: relative; padding-left: var(--space-6); }
.timeline::before { content:''; position:absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--border-strong); }
.tl-item { position: relative; padding-bottom: var(--space-6); }
.tl-item::before { content:''; position:absolute; left: calc(-1 * var(--space-6) + 1px); top: 4px; width: 14px; height: 14px; border-radius: 50%; background: var(--navy-900); border: 2px solid var(--saffron-500); }
.tl-item .tl-phase { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--saffron-400); }
.tl-item h4 { margin: 0.3rem 0; }



/* ── Page hero (inner pages) ── */
.page-hero { padding-top: 120px; padding-bottom: var(--space-7); }
/* Breadcrumb already clears the fixed header — don't double the offset */
.breadcrumb + .page-hero { padding-top: var(--space-7); }
.page-hero h1 { font-size: var(--fs-h1); max-width: 900px; margin-bottom: var(--space-4); }
.page-hero .lead { font-size: var(--fs-body-lg); max-width: 680px; color: var(--text-on-dark-dim); }

/* ── Page utilities ── */
.lead--spaced { margin-top: var(--space-4); font-size: var(--fs-body-lg); }
.lead--constrained { max-width: 620px; margin: var(--space-4) auto var(--space-6); }
.lead--constrained-sm { max-width: 600px; margin: var(--space-4) auto var(--space-6); }
.hero-title-spaced { margin: var(--space-4) 0; }
.card-heading-spaced { margin: var(--space-4) 0 var(--space-2); }
.card-heading-spaced-lg { margin: var(--space-4) 0 var(--space-3); }
.card--white { background: #fff; }
.card--defence { border-color: var(--border-saffron); }
.tag--saffron { color: var(--saffron-400); background: rgba(255, 106, 26, 0.1); }
.contact-hero-title { margin: var(--space-3) 0 var(--space-4); }
.contact-hero-lead { color: var(--text-on-dark-dim); font-size: var(--fs-body-lg); margin-bottom: var(--space-6); }
.form-disclaimer { font-size: 0.78rem; color: var(--text-on-dark-faint); margin-top: var(--space-3); }

/* ── Resources list ── */
.res-list { display: grid; gap: 0.75rem; }
.res-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-card);
}
a.res-item {
  transition: border-color var(--transition-fast), background var(--transition-fast);
  color: inherit;
  text-decoration: none;
}
a.res-item:hover { border-color: var(--border-accent); color: inherit; background: rgba(54, 198, 255, 0.04); }
a.res-item:focus-visible { outline: 2px solid var(--quantum-cyan); outline-offset: 3px; }
.res-item .ri-icon { width: 44px; height: 44px; flex-shrink:0; display:grid; place-items:center; color: var(--quantum-cyan); background: rgba(30,115,255,0.1); border-radius: var(--radius-sm); }
.res-item .ri-icon svg { width: 22px; height: 22px; }
.subsystem h4 svg { width: 16px; height: 16px; flex-shrink: 0; }
.res-item .ri-body { flex: 1; min-width: 0; }
.res-item .ri-title,
.res-item h4 { display: block; font-size: 1rem; font-weight: 600; margin-bottom: 0.2rem; color: var(--text-on-dark); }
.res-item .ri-desc,
.res-item p { display: block; font-size: 0.84rem; color: var(--text-on-dark-dim); }
.res-item .ri-body { display: flex; flex-direction: column; gap: 0.15rem; }
.res-item .ri-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-on-dark-faint);
  flex-shrink: 0;
  white-space: nowrap;
}
@media (max-width: 560px) {
  .res-item {
    flex-wrap: wrap;
    align-items: flex-start;
  }
  .res-item .ri-meta {
    width: 100%;
    padding-left: calc(44px + var(--space-4));
    white-space: normal;
  }
}

/* ── Contact layout ── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: var(--space-8); align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; gap: var(--space-6); } }
.contact-info .ci-block { margin-bottom: var(--space-5); }
.contact-info .ci-block h4 { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-on-dark-faint); margin-bottom: 0.4rem; }
.contact-info .ci-block p, .contact-info .ci-block a { color: var(--text-on-dark-dim); font-size: 0.95rem; }
.form-card { background: var(--surface-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg); padding: clamp(1.5rem, 4vw, 2.5rem); }

/* Hero visual: allow long mono values to wrap on narrow screens */
@media (max-width: 520px) {
  .hv-spec li {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
  .hv-spec li .v { text-align: left; }
  .hv-label { flex-wrap: wrap; gap: 0.35rem; }
}

/* Capability list: very small screens stack cleanly */
@media (max-width: 480px) {
  .cap-item {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
  .cap-item p { grid-column: 1; }
}

/* Equal-height cards in grids */
.grid > .card,
.grid > a.card { height: 100%; }

/* Footer bottom spacing on small screens */
.site-footer { padding-bottom: env(safe-area-inset-bottom, 0); }