/* =========================================================
   Mira Labs — design system + one-page styles
   Direction: clinical premium, after dark.
   Near-black with a faint green tint, bone-white text,
   one restrained sage accent. Editorial serif display
   (Fraunces) over a clean grotesque body (Hanken Grotesk).
   ========================================================= */

:root {
  /* surfaces — faint green-tinted charcoal, not pure black */
  --bg:        #131614;
  --bg-2:      #171b18;
  --surface:   #1b201c;
  --surface-2: #232a25;

  /* lines */
  --border:    #2b322d;
  --border-2:  #3a423c;

  /* ink — warm bone, never pure white */
  --text:   #eceae3;
  --text-2: #abb1ab;
  --text-3: #757b75;

  /* one accent: desaturated sage */
  --accent:     #84c9a6;
  --accent-2:   #a8dcc1;
  --accent-ink: #0e120f;
  --accent-glow: rgba(132, 201, 166, 0.14);

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Hanken Grotesk", system-ui, -apple-system, sans-serif;

  --container: 1140px;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);
  --section-y: clamp(5rem, 11vw, 9.5rem);

  --r-sm: 8px;
  --r-md: 14px;

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

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

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

/* ---------- shared layout ---------- */
.section {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-block: var(--section-y);
  scroll-margin-top: 90px;
}

.label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-2);
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
  margin-bottom: 1.6rem;
}
.label::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 460;
  font-optical-sizing: auto;
  font-size: clamp(2rem, 1.3rem + 2.9vw, 3.3rem);
  line-height: 1.06;
  letter-spacing: -0.018em;
  max-width: 16ch;
}
.section__title--wide { max-width: 22ch; }

.section__intro {
  color: var(--text-2);
  font-size: 1.1rem;
  max-width: 52ch;
  margin-top: 1.4rem;
}

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

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.005em;
  padding: 0.78rem 1.35rem;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease),
    border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.btn--primary {
  background: var(--text);
  color: var(--bg);
}
.btn--primary:hover {
  background: #fff;
  transform: translateY(-1px);
}
.btn--ghost {
  background: transparent;
  border-color: var(--border-2);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  background: color-mix(in oklab, var(--accent) 8%, transparent);
}
.btn--block { width: 100%; }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease),
    backdrop-filter 0.3s var(--ease);
}
.nav.scrolled {
  background: color-mix(in oklab, var(--bg) 72%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--border);
}
.nav__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.1rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.brand__mark {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  position: relative;
  flex: none;
}
.brand__mark::after {
  content: "";
  position: absolute;
  top: -2px;
  left: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateX(-50%);
}
.brand__name { font-size: 1.02rem; }
.nav__links {
  display: flex;
  gap: 2rem;
  font-size: 0.92rem;
  color: var(--text-2);
}
.nav__links a {
  position: relative;
  transition: color 0.2s var(--ease);
}
.nav__links a:hover { color: var(--text); }
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.28s var(--ease);
}
.nav__links a:hover::after { width: 100%; }
.nav__cta { padding: 0.6rem 1.05rem; font-size: 0.9rem; }

/* ---------- hero ---------- */
.hero {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-block: clamp(3.5rem, 8vw, 7rem) clamp(4rem, 8vw, 6.5rem);
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at center, var(--border) 1px, transparent 1px);
  background-size: 30px 30px;
  opacity: 0.25;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 60% 35%, #000 0%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 70% at 60% 35%, #000 0%, transparent 75%);
  pointer-events: none;
}
.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 1.5rem;
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 450;
  font-optical-sizing: auto;
  font-size: clamp(2.8rem, 1.6rem + 4.6vw, 5.1rem);
  line-height: 1.015;
  letter-spacing: -0.025em;
  max-width: 14ch;
}
.hero__sub {
  margin-top: 1.7rem;
  color: var(--text-2);
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.22rem);
  max-width: 36ch;
}
.hero__actions {
  margin-top: 2.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}
.hero__note {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-3);
  letter-spacing: 0.01em;
}

/* hero orbital motif */
.hero__visual {
  justify-self: center;
  width: min(100%, 440px);
}
.orbit { width: 100%; height: auto; overflow: visible; }
.orbit__ring {
  stroke: var(--border-2);
  stroke-width: 1;
  fill: none;
}
.orbit__ring--faint { stroke: var(--border); }
.orbit__node { fill: var(--accent); }
.orbit__node--dim { fill: var(--accent); opacity: 0.55; }
.orbit__core { fill: var(--text-3); }
.orbit__spin { transform-origin: 220px 220px; }
.orbit__spin--a { animation: spin 26s linear infinite; }
.orbit__spin--b { animation: spin 18s linear infinite reverse; }
.orbit__spin--c { animation: spin 12s linear infinite; }
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- intro band ---------- */
.band {
  border-block: 1px solid var(--border);
  background: var(--bg-2);
}
.band__text {
  max-width: 60ch;
  margin-inline: auto;
  padding: clamp(2.5rem, 5vw, 3.75rem) var(--gutter);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.25rem, 1.05rem + 0.9vw, 1.7rem);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--text-2);
  text-align: center;
}
.band__text em { color: var(--text); font-style: italic; }

/* ---------- the moment ---------- */
.moment__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.moment__body p { color: var(--text-2); }
.moment__body p + p { margin-top: 1.15rem; }

.frontier {
  margin-top: 2.2rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.frontier__label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-3);
}
.frontier__list {
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.01em;
}
.frontier__list i { color: var(--accent); font-style: normal; margin-inline: 0.25em; }

/* ---------- rows (audience) ---------- */
.rows {
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  display: grid;
  gap: 0;
}
.rows--two { grid-template-columns: 1fr 1fr; column-gap: clamp(2rem, 5vw, 4.5rem); }
.row {
  padding: 1.9rem 0;
  border-top: 1px solid var(--border);
}
.row__index {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}
.row__title {
  font-size: 1.22rem;
  font-weight: 600;
  margin-top: 0.5rem;
}
.row__text {
  margin-top: 0.65rem;
  color: var(--text-2);
  font-size: 1rem;
  max-width: 42ch;
}

/* ---------- what we build ---------- */
.build__list { margin-top: clamp(2.5rem, 5vw, 3.5rem); }
.build__item {
  display: grid;
  grid-template-columns: 4rem minmax(11rem, 0.5fr) 1.4fr;
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: start;
  padding: 2.1rem 0;
  border-top: 1px solid var(--border);
}
.build__item:last-child { border-bottom: 1px solid var(--border); }
.build__index {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  padding-top: 0.15rem;
}
.build__head h3 {
  font-family: var(--font-display);
  font-weight: 480;
  font-size: clamp(1.3rem, 1.1rem + 0.7vw, 1.7rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.build__text {
  color: var(--text-2);
  font-size: 1.03rem;
  max-width: 56ch;
}
.build__item:hover .build__head h3 { color: var(--accent-2); }
.build__head h3 { transition: color 0.25s var(--ease); }

/* ---------- why mira ---------- */
.why__grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.why__body p { color: var(--text-2); font-size: 1.08rem; }
.why__body p + p { margin-top: 1.2rem; }
.why__body p:first-child {
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1.1rem + 0.9vw, 1.7rem);
  line-height: 1.4;
  font-weight: 400;
  letter-spacing: -0.01em;
}

/* ---------- the window ---------- */
.window { }
.window__title {
  font-family: var(--font-display);
  font-weight: 450;
  font-size: clamp(2.2rem, 1.3rem + 3.6vw, 4rem);
  line-height: 1.07;
  letter-spacing: -0.022em;
  max-width: 20ch;
  margin-bottom: 2.2rem;
}
.window__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.8rem;
  max-width: 60ch;
  margin-left: auto;
}
.window__body p { color: var(--text-2); font-size: 1.1rem; }
.arrow-link {
  font-weight: 600;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  width: fit-content;
  border-bottom: 1px solid var(--border-2);
  padding-bottom: 0.3rem;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), gap 0.25s var(--ease);
}
.arrow-link span { color: var(--accent); transition: transform 0.25s var(--ease); }
.arrow-link:hover { color: var(--accent-2); border-color: var(--accent); gap: 0.85em; }

/* ---------- contact ---------- */
.contact__grid {
  display: grid;
  grid-template-columns: 0.85fr 1fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}
.contact__sub {
  margin-top: 1.4rem;
  color: var(--text-2);
  font-size: 1.08rem;
  max-width: 38ch;
}
.contact__privacy {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--text-3);
  max-width: 32ch;
}
.form {
  display: grid;
  gap: 1.15rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: clamp(1.5rem, 3vw, 2.25rem);
}
.field { display: grid; gap: 0.5rem; }
.field label {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-2);
}
.field input,
.field textarea {
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  padding: 0.8rem 0.95rem;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  resize: vertical;
}
.field input::placeholder,
.field textarea::placeholder { color: var(--text-3); }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form__status {
  font-size: 0.9rem;
  color: var(--accent-2);
  min-height: 1.2em;
}
.form.is-sent .field,
.form.is-sent .btn { display: none; }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-2);
}
.footer__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: clamp(2.5rem, 5vw, 3.5rem) var(--gutter);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
}
.footer__tag {
  color: var(--text-2);
  font-size: 0.95rem;
  text-align: center;
}
.footer__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.3rem;
  font-size: 0.85rem;
  color: var(--text-3);
}
.footer__meta a:hover { color: var(--accent-2); }

/* ---------- reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: var(--d, 0s);
}
[data-reveal].in {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .nav__links { display: none; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { order: -1; width: min(72%, 320px); }
  .moment__grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .rows--two { grid-template-columns: 1fr; }
  .build__item { grid-template-columns: 3rem 1fr; }
  .build__text { grid-column: 1 / -1; max-width: none; }
  .why__grid { grid-template-columns: 1fr; }
  .window__body { margin-left: 0; }
  .contact__grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .footer__meta { align-items: center; }
}

@media (max-width: 520px) {
  .nav__cta { display: none; }
  .build__item { grid-template-columns: 1fr; gap: 0.5rem; }
  .build__index { padding-top: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .orbit__spin { animation: none; }
  [data-reveal] { transition: none; opacity: 1; transform: none; }
}