/* SpectroAnalytics -- static site stylesheet
   Signature motif: the "spectral trace" -- a violet -> teal -> amber line,
   the shape of an absorbance spectrum -- echoed in the hero chart, section
   ticks, nav underline, card hover edge, and the language toggle. */

:root {
  /* -- surfaces -- */
  --page-bg: #f1f5f3;
  --paper: #ffffff;
  --mist: #eaf1ee;
  --grid-line: #dce6e2;
  --border: #dbe5e1;

  /* -- ink -- */
  --navy: #16211d; /* primary heading / panel ink */
  --navy-light: #223129; /* panel gradient partner */
  --ink: #16211d;
  --slate: #4f5f58; /* secondary text */

  /* -- spectral accents -- */
  --violet: #5b3ee0;
  --teal: #12968c;
  --teal-dark: #0b7a72;
  --amber: #e2963a;
  --spectrum: linear-gradient(90deg, var(--violet) 0%, var(--teal) 52%, var(--amber) 100%);

  /* -- type -- */
  --font-display: "Space Grotesk", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius: 10px;
  --shadow: 0 10px 30px rgba(16, 30, 25, 0.08);
  --max-width: 1180px;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background-color: var(--page-bg);
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: -1px -1px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--navy);
  white-space: nowrap;
}

.brand svg {
  width: 30px;
  height: 30px;
  flex: none;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  flex-wrap: wrap;
}
/* too big left-right padding will fold french menu into burger early */
.main-nav a {
  position: relative;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--slate);
  padding: 0.4rem 0.01rem;
  white-space: nowrap;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--spectrum);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.main-nav a:hover,
.main-nav a.is-current {
  color: var(--navy);
}

.main-nav a:hover::after,
.main-nav a.is-current::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  background: var(--paper);
}

.lang-switch button {
  border: none;
  background: transparent;
  color: var(--slate);
  padding: 0.25rem 0.50rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.lang-switch button.is-active {
  background: var(--spectrum);
  color: #fff;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--paper);
  border-radius: 8px;
  padding: 0.4rem 0.55rem;
  cursor: pointer;
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

/* ---------- Hero (instrument-panel treatment) ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 12% 18%, rgba(91, 62, 224, 0.22), transparent 40%),
    radial-gradient(circle at 88% 82%, rgba(226, 150, 58, 0.14), transparent 45%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-light) 100%);
  color: #fff;
}

.hero .container {
  padding-top: 5.5rem;
  padding-bottom: 5.5rem;
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
}

.hero.hero--compact .container {
  grid-template-columns: 1fr;
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
  font-weight: 500;
  color: #b9c9c2;
  margin-bottom: 1.1rem;
}

.hero-eyebrow .tick {
  width: 22px;
}

.hero--compact .hero-eyebrow {
  justify-content: center;
}

.hero h1 {
  font-weight: 600;
  font-size: clamp(2.15rem, 4vw, 2.9rem);
  line-height: 1.14;
  margin: 0 0 1.1rem;
}

.hero p {
  font-size: 1.08rem;
  color: #cddad3;
  max-width: 46ch;
  margin: 0 0 1.75rem;
}

.hero.hero--compact p {
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}

.btn-primary {
  background: var(--teal);
  color: #fff;
}

.btn-primary:hover {
  background: var(--teal-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(11, 122, 114, 0.35);
}

.btn-primary:disabled {
  opacity: 0.65;
  cursor: progress;
  transform: none;
  box-shadow: none;
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.btn-ghost:hover {
  border-color: #fff;
}

.hero-figure {
  justify-self: center;
}

/* -- hero flask (the spectral gradient, poured as a reagent) -- */

.flask {
  width: min(100%, 340px);
}

.chart-axis {
  fill: #8fa39b;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
}

.flask-surface {
  animation: surface-ripple 4s ease-in-out infinite;
}

.bubble {
  fill: rgba(255, 255, 255, 0.55);
  animation: bubble-rise 3.2s ease-in infinite;
}

.bubble:nth-child(3) {
  animation-delay: 0.6s;
}

.bubble:nth-child(4) {
  animation-delay: 1.4s;
}

@keyframes bubble-rise {
  0% {
    transform: translateY(0);
    opacity: 0;
  }
  15% {
    opacity: 0.8;
  }
  85% {
    opacity: 0.4;
  }
  100% {
    transform: translateY(-46px);
    opacity: 0;
  }
}

@keyframes surface-ripple {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-1.5px);
  }
}

.spectrum-rule {
  margin: 0 auto;
  width: min(100%, 460px);
  height: 3px;
  border-radius: 999px;
  background: var(--spectrum);
  opacity: 0.85;
}

@media (prefers-reduced-motion: reduce) {
  .bubble,
  .flask-surface {
    animation: none;
    opacity: 0.6;
  }
}

/* ---------- Sections ---------- */

section {
  padding: 4.5rem 0;
}

.section-heading {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--teal-dark);
  margin-bottom: 0.75rem;
}

.tick {
  display: inline-block;
  width: 22px;
  height: 3px;
  border-radius: 999px;
  background: var(--spectrum);
  flex: none;
}

.section-heading h2 {
  font-weight: 600;
  font-size: clamp(1.65rem, 3vw, 2.15rem);
  color: var(--navy);
  margin: 0 0 0.75rem;
}

.section-heading p {
  color: var(--slate);
  margin: 0;
}

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

.card-grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--spectrum);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(16, 30, 25, 0.12);
}

.card:hover::before {
  transform: scaleX(1);
}

.card .icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(18, 150, 140, 0.1);
  color: var(--teal-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.card .icon svg {
  width: 26px;
  height: 26px;
}

.card h3 {
  margin: 0 0 0.6rem;
  color: var(--navy);
  font-size: 1.15rem;
  font-weight: 600;
}

.card p {
  margin: 0 0 1.1rem;
  color: var(--slate);
}

.card .learn-more {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--teal-dark);
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.card .learn-more svg {
  width: 16px;
  height: 16px;
  transition: transform 0.15s ease;
}

.card .learn-more:hover svg {
  transform: translateX(3px);
}

.two-col {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr 1fr;
  align-items: center;
}

.two-col h2 {
  color: var(--navy);
  font-weight: 600;
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-top: 0;
}

.two-col p {
  color: var(--slate);
}

.stat-strip {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  margin-top: 1.75rem;
}

.stat-strip div {
  min-width: 120px;
  border-left: 2px solid var(--grid-line);
  padding-left: 0.9rem;
}

.stat-strip strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--teal-dark);
}

.stat-strip span {
  color: var(--slate);
  font-size: 0.85rem;
}

.cta-band {
  background: linear-gradient(135deg, var(--teal-dark), var(--teal));
  color: #fff;
  text-align: center;
}

.cta-band h2 {
  font-weight: 600;
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 0.9rem;
}

.cta-band p {
  max-width: 56ch;
  margin: 0 auto 1.75rem;
  color: rgba(255, 255, 255, 0.9);
}

.contact-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr 1fr;
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.contact-form label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
  color: var(--navy);
  display: block;
  margin-bottom: 0.4rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 0.85rem;
  font: inherit;
  color: var(--ink);
  background: var(--paper);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(18, 150, 140, 0.15);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form button {
  justify-self: start;
  border: none;
}

.form-status {
  font-size: 0.88rem;
  font-weight: 500;
  min-height: 1.3em;
}

.form-status[data-state="success"] {
  color: var(--teal-dark);
}

.form-status[data-state="error"] {
  color: #b8462f;
}

.hours-card {
  background: var(--paper);
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid var(--border);
}

.hours-card h3 {
  margin-top: 0;
  color: var(--navy);
  font-weight: 600;
}

.hours-row {
  display: flex;
  justify-content: space-between;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--grid-line);
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.hours-row:last-child {
  border-bottom: none;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--navy);
  color: #b9c9c2;
  padding: 3rem 0 2rem;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  color: #fff;
  font-size: 1.05rem;
}

.footer-brand svg {
  width: 26px;
  height: 26px;
}

.footer-nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-nav a {
  color: #b9c9c2;
}

.footer-nav a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #7f948b;
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-figure {
    order: -1;
  }

  .two-col,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .stat-strip {
    justify-content: center;
  }
}

@media (max-width: 1100px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.5rem 1.5rem;
    gap: 0.9rem;
    display: none;
  }

  .main-nav.is-open {
    display: flex;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-actions {
    order: 2;
  }
}