/* ============================================================
   NORTHEN TRADING LABS — Homepage
   Homepage-only styles. Tokens come from tokens.css; shared
   primitives (.section*, .gradient-text, .reveal-*, .footer*,
   .btn-primary/.btn-ghost, .ntl-marketing .container) live in
   ntl.css. Clean modern SaaS: static hero, soft elevation,
   restrained color, light-first with full dark support.
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  font-size: var(--ntl-fs-md);
  overflow-x: hidden;
}

body {
  background: var(--ntl-bg);
  background-image: var(--ntl-bg-gradient);
  background-attachment: fixed;
  color: var(--ntl-text);
  font-family: var(--ntl-font-sans);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(99, 102, 241, 0.3);
  color: #fff;
}

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

ul { list-style: none; }

em {
  font-style: italic;
  color: var(--ntl-blue);
}

/* ============================================================
   HERO — static, typographic
   ============================================================ */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  width: 100%;
}

.hero-title {
  font-family: var(--ntl-font-sans);
  font-size: clamp(44px, 6.5vw, 84px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: var(--ntl-text);
  margin-bottom: 32px;
}

.hero-sub {
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--ntl-text-2);
  font-weight: 400;
  line-height: 1.7;
  max-width: 580px;
  margin-bottom: 48px;
  letter-spacing: 0.01em;
}

.br-desktop { display: block; }

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

/* ============================================================
   BUILDING GRID  (01 — What We're Building)
   ============================================================ */
.building-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.building-card {
  background: var(--ntl-surface);
  border: 1px solid var(--ntl-border);
  border-radius: var(--ntl-radius);
  box-shadow: var(--ntl-shadow-sm);
  padding: 36px;
  transition: border-color var(--ntl-transition), box-shadow var(--ntl-transition), transform var(--ntl-transition);
}

.building-card:hover {
  border-color: var(--ntl-border-hover);
  box-shadow: var(--ntl-shadow-md);
  transform: translateY(-3px);
}

.card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--ntl-blue-dim);
  color: var(--ntl-blue);
  margin-bottom: 22px;
}

.building-card h3 {
  font-size: var(--ntl-fs-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ntl-text);
  margin-bottom: 12px;
}

.building-card p {
  font-size: var(--ntl-fs-base);
  color: var(--ntl-text-2);
  line-height: 1.75;
}

/* ============================================================
   TECHNOLOGIES  (02 — Internal Systems)
   ============================================================ */
.tech-layout {
  display: grid;
  grid-template-columns: minmax(280px, 420px) 1fr;
  gap: 72px;
  align-items: start;
}

.tech-left { position: sticky; top: 110px; }

.tech-list {
  display: flex;
  flex-direction: column;
}

.tech-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: start;
  padding: 28px 24px;
  border-radius: var(--ntl-radius);
  border: 1px solid transparent;
  transition: border-color var(--ntl-transition), background var(--ntl-transition);
}

.tech-item:hover {
  background: var(--ntl-surface);
  border-color: var(--ntl-border);
  box-shadow: var(--ntl-shadow-sm);
}

.tech-item + .tech-item { margin-top: 4px; }

.tech-num {
  font-family: var(--ntl-font-mono);
  font-size: var(--ntl-fs-xs);
  font-weight: 500;
  color: var(--ntl-blue);
  padding-top: 4px;
}

.tech-content h4 {
  font-size: var(--ntl-fs-md);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ntl-text);
  margin-bottom: 8px;
}

.tech-content p {
  font-size: 13.5px;
  color: var(--ntl-text-2);
  line-height: 1.7;
}

.tech-tag {
  font-size: var(--ntl-fs-3xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ntl-text-label);
  background: var(--ntl-blue-dim);
  border: 1px solid var(--ntl-border);
  border-radius: var(--ntl-radius-full);
  padding: 4px 12px;
  white-space: nowrap;
  margin-top: 2px;
}

/* ============================================================
   APPROACH  (03 — Philosophy)
   ============================================================ */
.approach-inner {
  display: grid;
  grid-template-columns: minmax(280px, 400px) 1fr;
  gap: 72px;
  align-items: start;
}

.approach-content {
  display: grid;
  gap: 48px;
}

.approach-text p {
  font-size: 15.5px;
  color: var(--ntl-text-2);
  line-height: 1.8;
  margin-bottom: 18px;
  max-width: 620px;
}

.approach-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.pillar {
  background: var(--ntl-surface);
  border: 1px solid var(--ntl-border);
  border-radius: var(--ntl-radius);
  box-shadow: var(--ntl-shadow-sm);
  padding: 26px 22px;
  transition: border-color var(--ntl-transition), box-shadow var(--ntl-transition);
}

.pillar:hover {
  border-color: var(--ntl-border-hover);
  box-shadow: var(--ntl-shadow-md);
}

.pillar-num {
  font-family: var(--ntl-font-mono);
  font-size: var(--ntl-fs-sm);
  font-weight: 500;
  color: var(--ntl-blue);
  margin-bottom: 14px;
}

.pillar-body h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--ntl-text);
  margin-bottom: 8px;
}

.pillar-body p {
  font-size: var(--ntl-fs-sm);
  color: var(--ntl-text-2);
  line-height: 1.65;
}

/* ============================================================
   VISION  (04 — Vision & Roadmap)
   ============================================================ */
.section-vision {
  background: var(--ntl-bg-subtle);
}

.vision-inner {
  display: grid;
  grid-template-columns: minmax(280px, 400px) 1fr;
  gap: 72px;
  align-items: start;
}

.vision-right p {
  font-size: 15px;
  color: var(--ntl-text-2);
  line-height: 1.8;
  margin-bottom: 18px;
  max-width: 640px;
}

.vision-quote {
  font-size: 19px;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--ntl-text);
  border-left: 3px solid var(--ntl-blue);
  padding: 6px 0 6px 24px;
  margin-bottom: 28px;
}

.vision-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 36px;
  padding: 26px 30px;
  background: var(--ntl-surface);
  border: 1px solid var(--ntl-border);
  border-radius: var(--ntl-radius);
  box-shadow: var(--ntl-shadow-sm);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-num {
  font-family: var(--ntl-font-mono);
  font-size: var(--ntl-fs-xl);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ntl-text);
}

.stat-label {
  font-size: var(--ntl-fs-2xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ntl-text-3);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--ntl-border);
}

/* ============================================================
   CAPABILITY ACCORDION  (05 — Capability)
   ============================================================ */
.capability-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.acc-item {
  background: var(--ntl-surface);
  border: 1px solid var(--ntl-border);
  border-radius: var(--ntl-radius);
  box-shadow: var(--ntl-shadow-sm);
  overflow: hidden;
  transition: border-color var(--ntl-transition), box-shadow var(--ntl-transition);
}

.acc-item.active {
  border-color: var(--ntl-border-hover);
  box-shadow: var(--ntl-shadow-md);
}

.acc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 22px 28px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
}

.acc-title-wrap {
  display: flex;
  align-items: center;
  gap: 18px;
}

.acc-num {
  font-family: var(--ntl-font-mono);
  font-size: var(--ntl-fs-xs);
  font-weight: 500;
  color: var(--ntl-blue);
}

.acc-title {
  font-size: var(--ntl-fs-md);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ntl-text);
  margin: 0;
}

/* plus → minus icon */
.acc-icon {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.acc-icon::before,
.acc-icon::after {
  content: '';
  position: absolute;
  background: var(--ntl-text-3);
  transition: transform var(--ntl-transition), background var(--ntl-transition);
}

.acc-icon::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
  border-radius: 1px;
}

.acc-icon::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
  border-radius: 1px;
}

.acc-item.active .acc-icon::after { transform: scaleY(0); }
.acc-item.active .acc-icon::before { background: var(--ntl-blue); }

.acc-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.acc-inner {
  padding: 0 28px 28px;
  border-top: 1px solid var(--ntl-border);
  padding-top: 22px;
  margin: 0 0;
}

.acc-desc {
  font-size: 14.5px;
  color: var(--ntl-text-2);
  line-height: 1.75;
  max-width: 760px;
  margin-bottom: 22px;
}

.acc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.acc-col h4 {
  font-size: var(--ntl-fs-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ntl-text-label);
  margin-bottom: 12px;
}

.acc-list li {
  position: relative;
  font-size: 13.5px;
  color: var(--ntl-text-2);
  line-height: 1.65;
  padding-left: 18px;
  margin-bottom: 9px;
}

.acc-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 2px;
  border-radius: 1px;
  background: var(--ntl-blue);
}

.acc-examples { margin-top: 26px; }

.acc-examples h4 {
  font-size: var(--ntl-fs-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ntl-text-label);
  margin-bottom: 12px;
}

.acc-example-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.acc-example-grid + .acc-example-grid { margin-top: 14px; }

.acc-example {
  background: var(--ntl-bg-subtle);
  border: 1px solid var(--ntl-border);
  border-radius: var(--ntl-radius-sm);
  padding: 14px 16px;
  min-width: 0;
}

.acc-example-wide { grid-column: 1 / -1; }

.acc-example-label {
  display: block;
  font-size: var(--ntl-fs-3xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ntl-text-3);
  margin-bottom: 8px;
}

.acc-example pre {
  margin: 0;
  overflow-x: auto;
}

.acc-example code {
  font-family: var(--ntl-font-mono);
  font-size: var(--ntl-fs-xs);
  line-height: 1.6;
  color: var(--ntl-text);
  white-space: pre-wrap;
  word-break: break-word;
}

.acc-example .code-comment {
  color: var(--ntl-text-3);
  font-style: italic;
}

.capability-statement {
  margin-top: 48px;
  max-width: 720px;
}

.capability-statement p {
  font-size: 15.5px;
  color: var(--ntl-text-2);
  line-height: 1.8;
}

/* ============================================================
   ABOUT  (06 — About Us)
   ============================================================ */
.about-narrative {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px;
  margin-bottom: 56px;
}

.about-col h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ntl-text);
  margin-bottom: 14px;
}

.about-col p {
  font-size: 14.5px;
  color: var(--ntl-text-2);
  line-height: 1.75;
  margin-bottom: 14px;
}

.about-list li {
  position: relative;
  font-size: var(--ntl-fs-base);
  color: var(--ntl-text-2);
  line-height: 1.7;
  padding-left: 18px;
  margin-bottom: 10px;
}

.about-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 2px;
  border-radius: 1px;
  background: var(--ntl-blue);
}

.about-list strong { color: var(--ntl-text); }

.about-family {
  background: var(--ntl-surface);
  border: 1px solid var(--ntl-border);
  border-radius: var(--ntl-radius);
  box-shadow: var(--ntl-shadow-sm);
  padding: 40px 44px;
}

.family-quote blockquote {
  font-size: var(--ntl-fs-lg);
  font-weight: 500;
  line-height: 1.65;
  letter-spacing: -0.01em;
  color: var(--ntl-text);
  margin-bottom: 16px;
}

.family-quote cite {
  font-style: normal;
  font-size: var(--ntl-fs-sm);
  color: var(--ntl-text-3);
}

/* ============================================================
   TEAM  (07 — The Team)
   ============================================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.team-card {
  background: var(--ntl-surface);
  border: 1px solid var(--ntl-border);
  border-radius: var(--ntl-radius);
  box-shadow: var(--ntl-shadow-sm);
  padding: 32px 28px;
  text-align: center;
  transition: border-color var(--ntl-transition), box-shadow var(--ntl-transition), transform var(--ntl-transition);
}

.team-card:hover {
  border-color: var(--ntl-border-hover);
  box-shadow: var(--ntl-shadow-md);
  transform: translateY(-3px);
}

.team-avatar {
  position: relative;
  width: 96px;
  height: 96px;
  margin: 0 auto 20px;
}

.avatar-photo {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}

.avatar-ring {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--ntl-border-hover);
  pointer-events: none;
}

.team-info h3 {
  font-size: var(--ntl-fs-md);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ntl-text);
  margin-bottom: 4px;
}

.team-role {
  display: block;
  font-size: var(--ntl-fs-2xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ntl-text-label);
  margin-bottom: 14px;
}

.team-info p {
  font-size: var(--ntl-fs-sm);
  color: var(--ntl-text-2);
  line-height: 1.7;
}

/* ============================================================
   CONTACT  (08 — Get in Touch)
   ============================================================ */
.section-contact { padding-bottom: 140px; }

.contact-inner {
  position: relative;
  background: var(--ntl-surface);
  border: 1px solid var(--ntl-border);
  border-radius: var(--ntl-radius-lg);
  box-shadow: var(--ntl-shadow-md);
  padding: 72px 64px;
  overflow: hidden;
}

.contact-content {
  position: relative;
  max-width: 640px;
}

.contact-title {
  font-family: var(--ntl-font-sans);
  font-size: clamp(30px, 3.6vw, 46px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--ntl-text);
  margin-bottom: 18px;
}

.contact-body {
  font-size: 15.5px;
  color: var(--ntl-text-2);
  line-height: 1.75;
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.cta-subtext {
  margin-top: 22px;
  font-size: 12.5px;
  color: var(--ntl-text-3);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .tech-layout,
  .approach-inner,
  .vision-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .tech-left { position: static; }

  .approach-pillars { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero {
    min-height: 0;
    padding: 130px 0 64px;
  }

  .hero-inner { padding: 0 24px; }

  .br-desktop { display: inline; }

  .building-grid,
  .about-narrative,
  .acc-grid {
    grid-template-columns: 1fr;
  }

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

  .building-card { padding: 26px 22px; }

  .tech-item {
    grid-template-columns: auto 1fr;
    gap: 14px;
  }

  .tech-tag {
    grid-column: 2;
    justify-self: start;
  }

  .vision-stats {
    gap: 20px;
    padding: 20px 22px;
  }

  .stat-divider { display: none; }

  .acc-header { padding: 18px 18px; }

  .acc-inner { padding: 18px 18px 22px; }

  .about-family { padding: 26px 22px; }

  .contact-inner { padding: 40px 24px; }

  .cta-buttons .btn-primary,
  .cta-buttons .btn-ghost {
    width: 100%;
    justify-content: center;
  }
}