/* ============================================================
   Unspent Labs — landing page
   Dark, minimalist, high-fx. Bitcoin-orange accent on near-black.
   ============================================================ */

:root {
  --bg: #05060a;
  --bg-2: #0a0c12;
  --panel: rgba(255, 255, 255, 0.025);
  --panel-2: rgba(255, 255, 255, 0.04);
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #e7e9ee;
  --text-dim: #8a8f9c;
  --text-faint: #555a66;
  --accent: #ffb020;       /* bitcoin orange */
  --accent-2: #ff7a18;
  --accent-glow: rgba(255, 176, 32, 0.35);
  --ok: #4ade80;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --maxw: 1240px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  cursor: none;
}

@media (pointer: coarse) {
  body { cursor: auto; }
  .cursor { display: none !important; }
}

a { color: inherit; text-decoration: none; }
em { font-style: italic; color: var(--accent); font-weight: 400; }

::selection { background: var(--accent-glow); color: #fff; }

/* ---------- ambient FX ---------- */
.fx {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

#grid-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
}

.fx-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
  will-change: transform;
}
.fx-glow--a {
  width: 60vw; height: 60vw;
  top: -20vw; left: -10vw;
  background: radial-gradient(circle, rgba(255, 122, 24, 0.35), transparent 60%);
  animation: drift-a 22s var(--ease) infinite alternate;
}
.fx-glow--b {
  width: 50vw; height: 50vw;
  bottom: -15vw; right: -10vw;
  background: radial-gradient(circle, rgba(80, 120, 255, 0.18), transparent 60%);
  animation: drift-b 28s var(--ease) infinite alternate;
}
@keyframes drift-a {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(8vw, 6vw) scale(1.15); }
}
@keyframes drift-b {
  0%   { transform: translate(0, 0) scale(1.1); }
  100% { transform: translate(-6vw, -4vw) scale(0.95); }
}

.fx-noise {
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: 0.04;
  mix-blend-mode: overlay;
}

.fx-scanline {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    rgba(255, 255, 255, 0.012) 2px,
    rgba(255, 255, 255, 0.012) 3px
  );
  opacity: 0.6;
}

/* ---------- custom cursor ---------- */
.cursor { position: fixed; top: 0; left: 0; z-index: 9999; pointer-events: none; mix-blend-mode: difference; }
.cursor__dot {
  position: absolute;
  width: 6px; height: 6px;
  background: #fff;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.2s var(--ease), height 0.2s var(--ease);
}
.cursor__ring {
  position: absolute;
  width: 36px; height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.25s var(--ease), height 0.25s var(--ease), border-color 0.25s var(--ease), opacity 0.25s;
}
.cursor.is-link .cursor__dot { width: 0; height: 0; }
.cursor.is-link .cursor__ring { width: 56px; height: 56px; border-color: var(--accent); }

/* ---------- loader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 10000;
  background: var(--bg);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 18px;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__mark {
  font-family: var(--mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  filter: drop-shadow(0 0 24px var(--accent-glow));
  animation: pulse 1.4s var(--ease) infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.loader__bar {
  width: 180px; height: 2px;
  background: var(--line);
  overflow: hidden;
}
.loader__bar span {
  display: block; height: 100%;
  width: 0%;
  background: var(--accent);
  animation: load 1.6s var(--ease-out) forwards;
}
@keyframes load { to { width: 100%; } }
.loader__text {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-faint);
  text-transform: uppercase;
}

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 40px;
  transition: padding 0.4s var(--ease), background 0.4s var(--ease), border-color 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  padding: 14px 40px;
  background: rgba(5, 6, 10, 0.7);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom-color: var(--line);
}
.nav__brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600; letter-spacing: -0.01em;
  font-size: 17px;
}
.nav__brand-mark {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px;
  background: var(--accent);
  color: #000;
  border-radius: 8px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 12px;
  box-shadow: 0 0 24px var(--accent-glow);
}
.nav__brand-text em { color: var(--text-dim); font-style: normal; font-weight: 400; }
.nav__links {
  display: flex; align-items: center; gap: 32px;
  font-size: 14px;
  color: var(--text-dim);
}
.nav__links a { position: relative; transition: color 0.25s; }
.nav__links a:hover { color: var(--text); }
.nav__links a:not(.nav__cta)::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 0; height: 1px; background: var(--accent);
  transition: width 0.3s var(--ease);
}
.nav__links a:not(.nav__cta):hover::after { width: 100%; }
.nav__cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  color: var(--text) !important;
  transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease);
}
.nav__cta:hover { border-color: var(--accent); background: rgba(255, 176, 32, 0.08); }
.nav__cta-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 10px var(--ok);
}
.nav__burger { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; }
.nav__burger span { width: 22px; height: 1.5px; background: var(--text); transition: 0.3s; }

@media (max-width: 760px) {
  .nav { padding: 18px 22px; }
  .nav.is-scrolled { padding: 12px 22px; }
  .nav__links {
    position: fixed; top: 0; right: 0; bottom: 0;
    width: min(78vw, 320px);
    flex-direction: column; align-items: flex-start; justify-content: center;
    gap: 24px; padding: 40px;
    background: rgba(8, 9, 14, 0.96);
    backdrop-filter: blur(24px);
    border-left: 1px solid var(--line);
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
    font-size: 22px;
  }
  .nav__links.is-open { transform: translateX(0); }
  .nav__cta { padding: 14px 22px; font-size: 18px; }
  .nav__burger { display: flex; z-index: 101; }
  .nav__burger.is-open span:nth-child(1) { transform: translateY(3.5px) rotate(45deg); }
  .nav__burger.is-open span:nth-child(2) { transform: translateY(-3px) rotate(-45deg); }
}

/* ---------- layout ---------- */
main { position: relative; z-index: 1; }
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 140px 40px;
  position: relative;
}
.section__head { max-width: 720px; margin-bottom: 80px; }
.section__index {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 24px;
}
.section__title {
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin-bottom: 22px;
}
.section__lede {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 580px;
}

@media (max-width: 760px) {
  .section { padding: 100px 22px; }
  .section__head { margin-bottom: 56px; }
}

/* ---------- hero ---------- */
.hero {
  min-height: 100vh;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 160px 40px 80px;
  display: flex; flex-direction: column; justify-content: center;
  position: relative;
}
.hero__status {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  width: fit-content;
  margin-bottom: 40px;
}
.status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 10px var(--ok);
  animation: blink 2.4s ease-in-out infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

.hero__title {
  font-size: clamp(44px, 7vw, 104px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 36px;
}
.hero__title .line {
  display: block;
  overflow: hidden;
  padding: 0.12em 0;
  margin-bottom: -0.12em;
}
.hero__title .line em { font-style: italic; color: var(--accent); font-weight: 500; }

.hero__lede {
  font-size: clamp(17px, 1.6vw, 21px);
  color: var(--text-dim);
  max-width: 620px;
  margin-bottom: 44px;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 64px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 24px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: transform 0.3s var(--ease), background 0.3s, border-color 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}
.btn svg { transition: transform 0.3s var(--ease); }
.btn--primary {
  background: var(--accent);
  color: #000;
  box-shadow: 0 8px 32px var(--accent-glow);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px var(--accent-glow); }
.btn--primary:hover svg { transform: translateX(4px); }
.btn--ghost {
  border: 1px solid var(--line-2);
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--text-dim); background: var(--panel); transform: translateY(-2px); }

.hero__meta {
  display: flex; flex-wrap: wrap; gap: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.meta { display: flex; flex-direction: column; gap: 4px; }
.meta__k {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.meta__v { font-size: 14px; color: var(--text); }

.hero__scroll {
  position: absolute; bottom: 32px; left: 40px;
  display: flex; align-items: center; gap: 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.hero__scroll-line {
  width: 60px; height: 1px;
  background: linear-gradient(to right, var(--text-faint), transparent);
  position: relative; overflow: hidden;
}
.hero__scroll-line::after {
  content: ""; position: absolute; left: 0; top: 0;
  width: 30%; height: 100%;
  background: var(--accent);
  animation: scroll-line 2.2s var(--ease) infinite;
}
@keyframes scroll-line {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(330%); }
}

@media (max-width: 760px) {
  .hero { padding: 130px 22px 80px; }
  .hero__meta { gap: 28px; }
  .hero__scroll { left: 22px; }
}

/* ---------- marquee ---------- */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 18px 0;
  background: rgba(255, 255, 255, 0.012);
}
.marquee__track {
  display: flex; gap: 28px;
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  animation: marquee 36s linear infinite;
  width: max-content;
}
.marquee__track span:nth-child(odd) { color: var(--text); }
.marquee__track span:nth-child(even) { color: var(--accent); opacity: 0.6; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- about ---------- */
.about__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  position: relative;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  backdrop-filter: blur(12px);
  transition: transform 0.5s var(--ease), border-color 0.4s, background 0.4s;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), var(--accent-glow), transparent 60%);
  opacity: 0; transition: opacity 0.4s;
  pointer-events: none;
}
.card:hover { transform: translateY(-6px); border-color: var(--line-2); background: var(--panel-2); }
.card:hover::before { opacity: 0.5; }
.card__num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-faint);
  margin-bottom: 28px;
}
.card__avatar {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255,176,32,0.18), rgba(255,122,24,0.06));
  border: 1px solid var(--line-2);
  display: grid; place-items: center;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 18px;
  color: var(--accent);
  margin-bottom: 22px;
}
.card__name { font-size: 22px; font-weight: 600; letter-spacing: -0.015em; margin-bottom: 4px; }
.card__role {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.card__bio { font-size: 14.5px; color: var(--text-dim); margin-bottom: 22px; }
.card__tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.card__tags li {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
}

@media (max-width: 900px) { .about__grid { grid-template-columns: 1fr; } }

/* ---------- services (accordion) ---------- */
.services__list { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.service {
  border-bottom: 1px solid var(--line);
  transition: background 0.4s;
  cursor: pointer;
}
.service:hover { background: rgba(255, 255, 255, 0.015); }
.service__head {
  display: grid;
  grid-template-columns: 80px 1fr 40px;
  align-items: center;
  gap: 24px;
  padding: 36px 8px;
}
.service__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--text-faint);
}
.service__head h3 {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 500;
  letter-spacing: -0.02em;
  transition: color 0.3s, transform 0.5s var(--ease);
}
.service:hover .service__head h3 { color: var(--accent); transform: translateX(8px); }
.service__icon {
  font-family: var(--mono);
  font-size: 28px;
  color: var(--text-dim);
  text-align: right;
  transition: transform 0.4s var(--ease), color 0.3s;
}
.service.is-open .service__icon { transform: rotate(45deg); color: var(--accent); }
.service__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.5s var(--ease);
}
.service__body > div { overflow: hidden; }
.service.is-open .service__body { grid-template-rows: 1fr; }
.service__body p {
  max-width: 620px;
  color: var(--text-dim);
  font-size: 16px;
  padding: 0 0 24px 104px;
}
.service__bullets {
  list-style: none;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px 32px;
  padding: 0 0 36px 104px;
  max-width: 720px;
}
.service__bullets li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: var(--text-dim);
}
.service__bullets li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 10px; height: 1px;
  background: var(--accent);
}

@media (max-width: 760px) {
  .service__head { grid-template-columns: 50px 1fr 30px; gap: 14px; padding: 26px 4px; }
  .service__body p, .service__bullets { padding-left: 0; }
  .service__bullets { grid-template-columns: 1fr; }
}

/* ---------- principles ---------- */
.principles__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
}
.principle {
  background: var(--bg);
  padding: 36px 28px;
  transition: background 0.4s;
  min-height: 220px;
  display: flex; flex-direction: column;
}
.principle:hover { background: var(--bg-2); }
.principle__k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 28px;
}
.principle h4 {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.principle p { font-size: 14px; color: var(--text-dim); }

@media (max-width: 900px) { .principles__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .principles__grid { grid-template-columns: 1fr; } }

/* ---------- contact ---------- */
.contact {
  display: flex; align-items: center;
  min-height: 90vh;
}
.contact__inner { max-width: 820px; }
.contact__title {
  font-size: clamp(34px, 5.5vw, 64px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.02;
  margin: 24px 0 28px;
}
.contact__lede { font-size: 18px; color: var(--text-dim); max-width: 560px; margin-bottom: 48px; }

.contact__channels { display: flex; flex-direction: column; gap: 1px; background: var(--line); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.channel {
  display: grid;
  grid-template-columns: 90px 1fr 24px;
  align-items: center;
  gap: 24px;
  padding: 24px 8px;
  background: var(--bg);
  transition: background 0.3s, padding 0.4s var(--ease);
}
.channel:hover { background: var(--bg-2); padding-left: 20px; }
.channel:hover svg { color: var(--accent); transform: translate(3px, -3px); }
.channel__k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.channel__v { font-size: 17px; }
.channel svg { color: var(--text-dim); transition: color 0.3s, transform 0.3s var(--ease); }

.contact__note {
  margin-top: 36px;
  font-size: 13px;
  color: var(--text-faint);
  font-style: italic;
}

/* ---------- footer ---------- */
.footer {
  position: relative; z-index: 1;
  border-top: 1px solid var(--line);
  padding: 64px 40px 32px;
  max-width: var(--maxw);
  margin: 0 auto;
}
.footer__row {
  display: flex; justify-content: space-between;
  gap: 40px; flex-wrap: wrap;
  margin-bottom: 56px;
}
.footer__brand { display: flex; align-items: center; gap: 10px; color: var(--text-dim); font-size: 14px; }
.footer__cols { display: flex; gap: 80px; }
.footer__col { display: flex; flex-direction: column; gap: 10px; font-size: 14px; color: var(--text-dim); }
.footer__col a, .footer__col span { transition: color 0.25s; }
.footer__col a:hover { color: var(--accent); }
.footer__h {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 8px;
}
.footer__base {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}
.footer__status { display: inline-flex; align-items: center; gap: 8px; }

@media (max-width: 760px) {
  .footer { padding: 48px 22px 24px; }
  .footer__cols { gap: 40px; }
}

/* ---------- reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  transition-delay: calc(var(--d, 0) * 0.08s);
}
.reveal.is-in { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
  .fx-glow, #grid-canvas, .fx-noise, .fx-scanline { display: none; }
}