/* ============================================================
   FAIRSIGHT — style.css
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-bg:        #080c14;
  --clr-bg-alt:    #0d1220;
  --clr-surface:   #111827;
  --clr-border:    rgba(255,255,255,0.08);
  --clr-text:      #e2e8f0;
  --clr-muted:     #94a3b8;
  --clr-accent1:   #6366f1;
  --clr-accent2:   #06b6d4;
  --clr-accent3:   #8b5cf6;
  --clr-green:     #10b981;
  --clr-red:       #ef4444;
  --gradient:      linear-gradient(135deg, var(--clr-accent1), var(--clr-accent2));
  --gradient-text: linear-gradient(135deg, #818cf8, #22d3ee);
  --radius:        12px;
  --radius-lg:     20px;
  --shadow:        0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:     0 8px 48px rgba(0,0,0,0.6);
  --transition:    0.25s ease;
  --font-body:     'Inter', sans-serif;
  --font-display:  'Space Grotesk', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background var(--transition), backdrop-filter var(--transition);
}

.nav.scrolled {
  background: rgba(8, 12, 20, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
}

.nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.05em;
}

.nav__logo-icon {
  font-size: 1.4rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__links {
  display: flex;
  gap: 32px;
}

.nav__links a {
  font-size: 0.9rem;
  color: var(--clr-muted);
  transition: color var(--transition);
}

.nav__links a:hover { color: var(--clr-text); }

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.btn--primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99,102,241,0.4);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99,102,241,0.5);
}

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

.btn--ghost:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.2);
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(99,102,241,0.15) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(6,182,212,0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero__badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(99,102,241,0.15);
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #818cf8;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--clr-muted);
  max-width: 620px;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero__cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero__stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.stat__num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__label {
  display: block;
  font-size: 0.8rem;
  color: var(--clr-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--clr-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--clr-muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* ---------- SECTIONS ---------- */
.section {
  padding: 100px 0;
}

.section--alt {
  background: var(--clr-bg-alt);
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}

.section__tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(99,102,241,0.12);
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #818cf8;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section__desc {
  color: var(--clr-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ---------- CASE STUDY ---------- */
.case-study {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-left: 4px solid var(--clr-accent1);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 48px;
}

.case-study__label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--clr-accent1);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.case-study__title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.case-study__body {
  color: var(--clr-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

.case-study__quote {
  font-style: italic;
  color: var(--clr-text);
  font-size: 1.05rem;
  padding: 16px 24px;
  background: rgba(99,102,241,0.08);
  border-radius: 8px;
  border-left: 3px solid var(--clr-accent1);
}

/* ---------- CARDS GRID ---------- */
.cards-grid {
  display: grid;
  gap: 24px;
}

.cards-grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.cards-grid--4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.card {
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--clr-border);
  transition: transform var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(99,102,241,0.4);
}

.card--dark { background: var(--clr-surface); }

.card--user { background: var(--clr-surface); }

.card--user-highlight {
  background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(6,182,212,0.1));
  border-color: rgba(99,102,241,0.3);
}

.card__icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.card__body {
  color: var(--clr-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.card__tag {
  display: inline-block;
  margin-top: 16px;
  padding: 4px 12px;
  background: rgba(99,102,241,0.12);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #818cf8;
}

/* ---------- IMPACT ROW ---------- */
.impact-row {
  margin-top: 64px;
}

.impact-row__header {
  margin-bottom: 32px;
}

.impact-row__header h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.impact-row__header p {
  color: var(--clr-muted);
}

.impact-row__items {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.impact-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 24px;
}

.impact-item__icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.impact-item strong {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
}

.impact-item p {
  color: var(--clr-muted);
  font-size: 0.9rem;
}

/* ---------- FAIL GRID ---------- */
.fail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.fail-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 24px;
}

.fail-item__x {
  font-size: 1.2rem;
  color: var(--clr-red);
  flex-shrink: 0;
  font-weight: 700;
}

.fail-item__check {
  font-size: 1.2rem;
  color: var(--clr-green);
  flex-shrink: 0;
  font-weight: 700;
}

.fail-item p {
  color: var(--clr-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.fail-item--highlight {
  background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(6,182,212,0.08));
  border-color: rgba(16,185,129,0.3);
}

.fail-item--highlight p {
  color: var(--clr-text);
}

/* ---------- PIPELINE ---------- */
.pipeline {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.pipeline__inputs {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
}

.pipeline__arrow {
  font-size: 1.5rem;
  color: var(--clr-accent1);
  padding: 8px 0;
  opacity: 0.7;
}

.pipeline__box {
  border-radius: var(--radius);
  padding: 24px 32px;
  text-align: center;
  border: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.pipeline__box-icon {
  font-size: 1.6rem;
  margin-bottom: 4px;
}

.pipeline__box strong {
  font-weight: 600;
  font-size: 0.95rem;
}

.pipeline__box span {
  font-size: 0.8rem;
  color: var(--clr-muted);
}

.pipeline__box--input {
  background: var(--clr-surface);
  min-width: 200px;
}

.pipeline__box--system {
  background: var(--clr-surface);
  border-color: rgba(99,102,241,0.3);
  min-width: 320px;
}

.pipeline__platform {
  background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(6,182,212,0.08));
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 700px;
}

.pipeline__platform-label {
  text-align: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 24px;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pipeline__modules {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.pipeline__module {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.pipeline__module strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.pipeline__module span {
  font-size: 0.75rem;
  color: var(--clr-muted);
}

.pipeline__outputs {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
}

.pipeline__box--output {
  background: rgba(16,185,129,0.08);
  border-color: rgba(16,185,129,0.25);
  font-size: 0.85rem;
  padding: 16px 24px;
}

/* ---------- FEATURES ---------- */
.features {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.feature {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 40px;
  align-items: start;
}

.feature--reverse {
  grid-template-columns: 1fr 80px;
}

.feature--reverse .feature__num {
  order: 2;
}

.feature__num {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.4;
  padding-top: 8px;
}

.feature__tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(99,102,241,0.12);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #818cf8;
  margin-bottom: 12px;
}

.feature__title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.feature__body {
  color: var(--clr-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.feature__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--clr-muted);
  font-size: 0.9rem;
}

.feature__list li::before {
  content: '→';
  color: var(--clr-accent2);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ---------- EDGE GRID ---------- */
.edge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.edge-item {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: transform var(--transition), border-color var(--transition);
}

.edge-item:hover {
  transform: translateY(-4px);
  border-color: rgba(99,102,241,0.4);
}

.edge-item__num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  opacity: 0.6;
}

.edge-item h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.edge-item p {
  color: var(--clr-muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ---------- SECTORS ---------- */
.sectors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 64px;
}

.sector {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  transition: transform var(--transition), border-color var(--transition);
}

.sector:hover {
  transform: translateY(-4px);
  border-color: rgba(6,182,212,0.4);
}

.sector__icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.sector h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.sector p {
  color: var(--clr-muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ---------- REGULATORY ---------- */
.regulatory {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.regulatory__item {
  background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(6,182,212,0.05));
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.regulatory__logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.regulatory__item p {
  color: var(--clr-muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ---------- TEAM ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}

.team-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: transform var(--transition), border-color var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99,102,241,0.4);
}

.team-card__avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  margin: 0 auto 16px;
}

.team-card__name {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.team-card__id {
  font-size: 0.78rem;
  color: var(--clr-muted);
}

/* ---------- DISCLAIMER ---------- */
.disclaimer {
  background: rgba(251, 191, 36, 0.04);
  border-top: 1px solid rgba(251, 191, 36, 0.15);
  border-bottom: 1px solid rgba(251, 191, 36, 0.15);
  padding: 28px 0;
}

.disclaimer__inner {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.disclaimer__icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.disclaimer__text strong {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #fbbf24;
  margin-bottom: 6px;
}

.disclaimer__text p {
  font-size: 0.82rem;
  color: var(--clr-muted);
  line-height: 1.7;
}

/* ---------- FOOTER ---------- */
.footer {
  background: var(--clr-bg);
  border-top: 1px solid var(--clr-border);
  padding: 48px 0;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.05em;
}

.footer__tagline {
  color: var(--clr-muted);
  font-size: 0.9rem;
  max-width: 500px;
}

.footer__copy {
  color: var(--clr-muted);
  font-size: 0.8rem;
  opacity: 0.6;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: rgba(8,12,20,0.97);
    backdrop-filter: blur(16px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--clr-border);
  }
  .nav__hamburger { display: flex; }

  .hero { padding: 100px 0 60px; }
  .hero__stats { gap: 28px; }

  .feature {
    grid-template-columns: 1fr;
  }
  .feature--reverse {
    grid-template-columns: 1fr;
  }
  .feature--reverse .feature__num { order: 0; }
  .feature__num { font-size: 2.5rem; }

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

  .section { padding: 64px 0; }
}

@media (max-width: 480px) {
  .hero__title { font-size: 2.2rem; }
  .hero__cta { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .case-study { padding: 24px; }
}

/* ---------- SCROLL ANIMATIONS ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}