/* ─────────────────────────────────────────────────────────────
   IfaLabs — TOELabs · styles.css
   The IFA Internet · CENProject
───────────────────────────────────────────────────────────── */

/* ── Tokens ─────────────────────────────────────────────────── */
:root {
  --bg:         #06080e;
  --bg-alt:     #070c10;
  --bg-card:    #0b1219;
  --bg-card2:   #090e16;
  --border:     rgba(255,255,255,0.07);
  --border-md:  rgba(255,255,255,0.13);
  --text:       #e8ecf5;
  --text-muted: #7a8ba8;
  --gold:       #f5c518;
  --lab:        #00e07c;
  --lab-dim:    rgba(0, 224, 124, 0.10);
  --lab-glow:   rgba(0, 224, 124, 0.20);
  --radius:     12px;
  --radius-lg:  18px;
  --radius-xl:  24px;
  --shadow:     0 4px 24px rgba(0,0,0,0.5);
  --transition: 0.22s ease;
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── Layout ──────────────────────────────────────────────────── */
.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section--alt { background: var(--bg-alt); }
.section--cta { padding: 72px 0; }

/* ── Section Header ──────────────────────────────────────────── */
.section__header {
  text-align: center;
  max-width: 660px;
  margin: 0 auto 64px;
}

.section__eyebrow {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lab);
  margin-bottom: 14px;
}

.section__title {
  font-size: clamp(1.9rem, 3.5vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section__desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.78;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}
.btn--primary {
  background: var(--lab);
  color: #04080c;
}
.btn--primary:hover { opacity: 0.88; transform: translateY(-1px); }
.btn--ghost {
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border: 1px solid var(--border-md);
}
.btn--ghost:hover { background: rgba(255,255,255,0.10); }

/* ── Header ──────────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.header--scrolled {
  background: rgba(6, 8, 14, 0.90);
  backdrop-filter: blur(18px);
  border-color: var(--border);
}
.header__inner {
  max-width: 1160px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.header__back {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.82rem; color: var(--text-muted);
  transition: color var(--transition); flex-shrink: 0;
}
.header__back:hover { color: var(--text); }
.header__back-arrow { font-size: 1rem; }
.header__brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 800; font-size: 1.05rem;
  margin-right: auto;
}
.header__brand-icon { color: var(--lab); font-size: 1.2rem; }
.header__nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 6px 12px;
  font-size: 0.84rem;
  color: var(--text-muted);
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--text); background: rgba(255,255,255,0.06); }
.nav-link--cta {
  background: var(--lab-dim);
  color: var(--lab);
  border: 1px solid rgba(0,224,124,0.22);
  margin-left: 8px;
}
.nav-link--cta:hover { background: var(--lab-glow); }

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero__bg { position: absolute; inset: 0; pointer-events: none; }

.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,224,124,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,224,124,0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 90% at 50% 50%, black 10%, transparent 100%);
}

.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  pointer-events: none;
}
.hero__glow--green {
  width: 700px; height: 700px;
  top: -150px; left: -150px;
  background: radial-gradient(circle, rgba(0,224,124,0.11) 0%, transparent 65%);
}
.hero__glow--blue {
  width: 500px; height: 500px;
  bottom: -100px; right: -100px;
  background: radial-gradient(circle, rgba(67,97,238,0.10) 0%, transparent 65%);
}

/* Floating orbs */
.hero__orbs { position: absolute; inset: 0; pointer-events: none; }

.hero__orb {
  position: absolute;
  left: var(--ox);
  top: var(--oy);
  width: var(--os);
  height: var(--os);
  border-radius: 50%;
  border: 1px solid rgba(0,224,124,0.10);
  animation: orb-float var(--odur, 18s) var(--od, 0s) ease-in-out infinite alternate;
}

@keyframes orb-float {
  0%   { transform: translate(0, 0) scale(1); opacity: 0.4; }
  50%  { transform: translate(12px, -20px) scale(1.04); opacity: 0.7; }
  100% { transform: translate(-8px, 10px) scale(0.97); opacity: 0.3; }
}

/* Molecular SVG */
.hero__svg {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

/* Hero content */
.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.hero__eyebrow-pip {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--lab);
  box-shadow: 0 0 10px var(--lab);
  animation: pip-pulse 2.2s ease-in-out infinite;
}
@keyframes pip-pulse {
  0%, 100% { opacity: 1; } 50% { opacity: 0.25; }
}

.hero__wordmark {
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 0.04em;
}
.hero__wordmark-ifa  { color: var(--lab); }
.hero__wordmark-labs { color: var(--text); }

.hero__tagline {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 18px;
  letter-spacing: 0.01em;
}

.hero__desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.8;
}

.hero__stats {
  display: flex;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  overflow: hidden;
  margin-bottom: 40px;
  backdrop-filter: blur(8px);
}
.hero__stat {
  flex: 1;
  padding: 20px 16px;
  text-align: center;
  border-right: 1px solid var(--border);
}
.hero__stat:last-child { border-right: none; }
.hero__stat-value {
  font-size: clamp(1.1rem, 2vw, 1.9rem);
  font-weight: 800;
  color: var(--lab);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 4px;
}
.hero__stat-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.hero__ctas {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Labs Grid ───────────────────────────────────────────────── */
.labs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.lab-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.lab-card:hover {
  transform: translateY(-6px);
  border-color: var(--lc-accent);
  box-shadow: 0 12px 40px rgba(0,0,0,0.45), 0 0 0 1px color-mix(in srgb, var(--lc-accent) 20%, transparent);
}

/* Lab card visual header */
.lab-card__visual {
  position: relative;
  height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  overflow: hidden;
}

.lab-card__visual-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--lc-accent) 18%, #0a0f1a) 0%,
    #0b1220 60%,
    color-mix(in srgb, var(--lc-accent) 8%, #0a0f1a) 100%
  );
}
.lab-card__visual-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 28px 28px;
}

.lab-card__glyph {
  position: absolute;
  top: 16px; right: 20px;
  font-size: 3.2rem;
  color: var(--lc-accent);
  opacity: 0.25;
  line-height: 1;
  z-index: 1;
  transition: opacity var(--transition), transform var(--transition);
}
.lab-card:hover .lab-card__glyph { opacity: 0.5; transform: scale(1.08); }

.lab-card__abbr {
  position: relative;
  z-index: 1;
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--lc-accent);
  letter-spacing: -0.03em;
  line-height: 1;
}

.lab-card__tag {
  position: relative;
  z-index: 1;
  display: inline-block;
  margin-top: 8px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--lc-accent);
  background: color-mix(in srgb, var(--lc-accent) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--lc-accent) 30%, transparent);
  border-radius: 20px;
  padding: 3px 10px;
}

/* Lab card body */
.lab-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
}

.lab-card__name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.lab-card__desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.68;
  flex: 1;
}

.lab-card__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.lab-card__chip {
  font-size: 0.66rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.lab-card__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.lab-btn {
  flex: 1;
  text-align: center;
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}
.lab-btn--primary {
  background: var(--lc-accent);
  color: #04080c;
}
.lab-btn--primary:hover { opacity: 0.88; transform: translateY(-1px); }
.lab-btn--ghost {
  background: rgba(255,255,255,0.05);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.lab-btn--ghost:hover { color: var(--text); background: rgba(255,255,255,0.09); }

/* ── About Section ───────────────────────────────────────────── */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 56px;
  align-items: center;
}

.about-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin: 14px 0 20px;
}

.about-desc {
  font-size: 0.97rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 14px;
}
.about-desc:last-child { margin-bottom: 0; }

/* IfaSpace card */
.ifaspace-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
}
.ifaspace-card__top {
  position: absolute;
  top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--lab), #4361ee);
}
.ifaspace-card__icon {
  font-size: 2rem;
  color: var(--lab);
  margin-bottom: 14px;
}
.ifaspace-card__name {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.ifaspace-card__sub {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--lab);
  margin-bottom: 16px;
}
.ifaspace-card__desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}
.ifaspace-card__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.ifaspace-card__pills span {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  background: var(--lab-dim);
  border: 1px solid rgba(0,224,124,0.22);
  color: var(--lab);
}

/* ── E.T.H.I.C.S Section ─────────────────────────────────────── */
.ethics-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

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

.ethics-btn {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  text-align: left;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.ethics-btn:hover { border-color: var(--eb-accent); background: var(--bg-card2); }
.ethics-btn--active {
  border-color: var(--eb-accent) !important;
  background: color-mix(in srgb, var(--eb-accent) 7%, var(--bg-card)) !important;
  transform: translateX(4px);
}

.ethics-btn__letter {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--eb-accent);
  width: 36px;
  text-align: center;
  flex-shrink: 0;
  line-height: 1;
}
.ethics-btn__word {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

/* Ethics detail panel */
.ethics-detail {
  background: var(--bg-card);
  border: 1px solid var(--ed-accent, var(--lab));
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  text-align: center;
  position: sticky;
  top: 88px;
  box-shadow: 0 0 50px color-mix(in srgb, var(--ed-accent) 10%, transparent);
  transition: border-color 0.3s, box-shadow 0.3s;
}
.ethics-detail__letter {
  font-size: 6rem;
  font-weight: 900;
  color: var(--ed-accent, var(--lab));
  line-height: 1;
  margin-bottom: 8px;
  transition: color 0.3s;
}
.ethics-detail__word {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
}
.ethics-detail__desc {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.78;
}

/* ── CTA Strip ───────────────────────────────────────────────── */
.cta-strip {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-card2);
}
.cta-strip__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 50% 100% at 0% 50%, rgba(0,224,124,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 100% at 100% 50%, rgba(67,97,238,0.07) 0%, transparent 60%);
}
.cta-strip__inner {
  position: relative; z-index: 1;
  display: flex;
  align-items: center;
  gap: 48px;
  padding: 52px 48px;
}
.cta-strip__left { flex: 1; }
.cta-strip__eyebrow {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lab);
  margin-bottom: 10px;
}
.cta-strip__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 12px;
}
.cta-strip__desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.75;
}
.cta-strip__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-shrink: 0;
}
.cta-strip__actions .btn { justify-content: center; }

/* ── Footer ──────────────────────────────────────────────────── */
.footer {
  background: #04060b;
  border-top: 1px solid var(--border);
  padding: 56px 24px 32px;
}
.footer__inner {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  gap: 48px;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
}
.footer__brand { max-width: 280px; }
.footer__logo { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.footer__logo-icon { font-size: 1.3rem; color: var(--lab); }
.footer__logo-name { font-size: 1rem; font-weight: 800; }
.footer__tagline { font-size: 0.84rem; color: var(--text-muted); line-height: 1.5; }
.footer__links {
  display: flex; flex-wrap: wrap; gap: 6px 20px;
  justify-content: flex-end; align-items: flex-start; max-width: 500px;
}
.footer__link { font-size: 0.84rem; color: var(--text-muted); transition: color var(--transition); }
.footer__link:hover { color: var(--lab); }
.footer__bottom {
  max-width: 1160px; margin: 0 auto;
  padding-top: 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; flex-wrap: wrap;
}
.footer__copy { font-size: 0.78rem; color: var(--text-muted); }
.footer__axiom {
  font-size: 0.76rem; color: var(--text-muted);
  opacity: 0.55; font-style: italic; text-align: right;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .labs-grid { grid-template-columns: repeat(2, 1fr); }
  .about-layout { grid-template-columns: 1fr; }
  .ifaspace-card { max-width: 500px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .labs-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .ethics-layout { grid-template-columns: 1fr; }
  .ethics-detail { position: static; }
  .cta-strip__inner { flex-direction: column; gap: 28px; padding: 36px 24px; }
  .cta-strip__actions { flex-direction: row; width: 100%; }
  .cta-strip__actions .btn { flex: 1; }
  .header__nav { display: none; }
  .footer__inner { flex-direction: column; gap: 28px; }
  .footer__links { justify-content: flex-start; }
  .footer__bottom { flex-direction: column; text-align: center; }
  .footer__axiom { text-align: center; }
  .hero__svg { display: none; }
}

@media (max-width: 480px) {
  .labs-grid { grid-template-columns: 1fr; }
  .hero__stats { flex-wrap: wrap; }
  .hero__stat { min-width: 50%; border-bottom: 1px solid var(--border); }
  .hero__wordmark { font-size: clamp(3rem, 14vw, 5rem); }
}