/* Florentist — Scientific Consultancy */

:root {
  --ink: #0c0c0c;
  --ink-soft: #1a1a1a;
  --graphite: #2e2e2e;
  --ash: #6b6b6b;
  --mist: #a8a8a8;
  --cloud: #e8e8e6;
  --snow: #f7f7f5;
  --white: #ffffff;
  --line: rgba(12, 12, 12, 0.12);
  --line-strong: rgba(12, 12, 12, 0.28);
  --font-display: "Syne", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --nav-h: 4.5rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--snow);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ——— Atmosphere ——— */

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ——— Nav ——— */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(247, 247, 245, 0.92);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
}

.site-header__inner {
  width: min(1120px, calc(100% - 3rem));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.logo span {
  font-weight: 400;
  opacity: 0.35;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}

.nav a {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ash);
  transition: color 0.25s var(--ease);
  position: relative;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease);
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--ink);
}

.nav a:hover::after,
.nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-toggle {
  display: none;
  width: 2rem;
  height: 2rem;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ——— Buttons ——— */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 1rem 1.75rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--white);
  cursor: pointer;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), transform 0.3s var(--ease);
}

.btn:hover {
  background: transparent;
  color: var(--ink);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
}

.btn--ghost:hover {
  background: var(--ink);
  color: var(--white);
}

.btn svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s var(--ease);
}

.btn:hover svg {
  transform: translateX(3px);
}

/* ——— Hero ——— */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-h) + 1rem) 0 5rem;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(12, 12, 12, 0.04) 0%, transparent 60%),
    linear-gradient(165deg, #fafaf8 0%, #f0f0ed 45%, #e4e4e0 100%);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 70% 60% at 60% 40%, black 20%, transparent 75%);
  opacity: 0.7;
}

.hero__orb {
  position: absolute;
  width: min(55vw, 520px);
  height: min(55vw, 520px);
  right: -5%;
  top: 15%;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  opacity: 0.5;
}

.hero__orb::before {
  content: "";
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  border: 1px solid var(--line);
}

.hero__orb::after {
  content: "";
  position: absolute;
  inset: 28%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(12, 12, 12, 0.06), transparent 70%);
}

.hero__inner {
  position: relative;
  width: min(1120px, calc(100% - 3rem));
  margin: 0 auto;
  z-index: 1;
}

.hero__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3.5rem, 12vw, 8.5rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
  color: var(--ink);
  margin-bottom: 1.75rem;
}

.hero__headline {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
  letter-spacing: -0.02em;
  line-height: 1.3;
  max-width: 22ch;
  color: var(--ink-soft);
  margin-bottom: 1rem;
}

.hero__lede {
  font-size: 1.0625rem;
  color: var(--ash);
  max-width: 36ch;
  margin-bottom: 2.5rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  right: max(1.5rem, calc((100% - 1120px) / 2));
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  writing-mode: vertical-rl;
}

.hero__scroll::after {
  content: "";
  display: block;
  width: 1px;
  height: 3rem;
  background: var(--mist);
  margin: 0.75rem auto 0;
  transform-origin: top;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes scroll-line {
  0%,
  100% {
    transform: scaleY(0.4);
    opacity: 0.4;
  }
  50% {
    transform: scaleY(1);
    opacity: 1;
  }
}

@keyframes orbit-pulse {
  0%,
  100% {
    transform: scale(1) rotate(0deg);
  }
  50% {
    transform: scale(1.04) rotate(3deg);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero__brand,
  .hero__headline,
  .hero__lede,
  .hero__cta,
  .page-hero h1,
  .page-hero p {
    opacity: 0;
    animation: rise 1s var(--ease) forwards;
  }

  .hero__brand {
    animation-delay: 0.15s;
  }

  .hero__headline {
    animation-delay: 0.35s;
  }

  .hero__lede {
    animation-delay: 0.5s;
  }

  .hero__cta {
    animation-delay: 0.65s;
  }

  .hero__scroll {
    opacity: 0;
    animation: fade-in 1s var(--ease) 1.2s forwards;
  }

  .hero__scroll::after {
    animation: scroll-line 2.2s ease-in-out infinite;
  }

  .hero__orb {
    animation: orbit-pulse 12s ease-in-out infinite;
  }

  .page-hero h1 {
    animation-delay: 0.1s;
  }

  .page-hero p {
    animation-delay: 0.28s;
  }
}

/* ——— Sections ——— */

.section {
  padding: 7rem 0;
}

.section--ink {
  background: var(--ink);
  color: var(--cloud);
}

.section__inner {
  width: min(1120px, calc(100% - 3rem));
  margin: 0 auto;
}

.section__label {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: 1.25rem;
}

.section--ink .section__label {
  color: var(--ash);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 4.5vw, 3rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 18ch;
  margin-bottom: 1.25rem;
}

.section__copy {
  color: var(--ash);
  max-width: 42ch;
  margin-bottom: 3rem;
}

.section--ink .section__copy {
  color: var(--mist);
}

.section--ink .section__title {
  color: var(--white);
}

/* ——— Approach ——— */

.approach {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}

.approach__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.approach__item {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.approach__item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.approach__num {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--mist);
  padding-top: 0.2rem;
}

.approach__item h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
}

.approach__item p {
  font-size: 0.9375rem;
  color: var(--ash);
  max-width: 38ch;
}

/* ——— Domains ——— */

.domains {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.domain {
  padding: 2.5rem 2rem 2.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  padding-left: 2rem;
  transition: background 0.35s var(--ease);
}

.domain:nth-child(3n) {
  border-right: none;
}

.domain:nth-child(-n + 3) {
  border-top: none;
}

.domain:first-child {
  padding-left: 0;
}

.domain:hover {
  background: rgba(255, 255, 255, 0.03);
}

.domain h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 0.65rem;
}

.domain p {
  font-size: 0.9375rem;
  color: var(--mist);
  line-height: 1.6;
}

/* ——— CTA band ——— */

.cta-band {
  padding: 6rem 0;
  background:
    linear-gradient(135deg, #f7f7f5 0%, #ececea 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.cta-band h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.cta-band p {
  color: var(--ash);
  margin-bottom: 2rem;
}

/* ——— Page hero (inner) ——— */

.page-hero {
  padding: calc(var(--nav-h) + 5rem) 0 4rem;
  background:
    radial-gradient(ellipse 60% 50% at 80% 0%, rgba(12, 12, 12, 0.05) 0%, transparent 55%),
    linear-gradient(180deg, #fafaf8 0%, var(--snow) 100%);
  border-bottom: 1px solid var(--line);
}

.page-hero__inner {
  width: min(1120px, calc(100% - 3rem));
  margin: 0 auto;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.75rem, 7vw, 5rem);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 1.25rem;
}

.page-hero p {
  font-size: 1.125rem;
  color: var(--ash);
  max-width: 40ch;
}

/* ——— Prose (about) ——— */

.prose {
  max-width: 42rem;
}

.prose__heading {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 2rem;
}

.prose p {
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
  font-size: 1.0625rem;
  line-height: 1.75;
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose em {
  font-style: italic;
}

.prose__closing {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.2rem, 2.4vw, 1.45rem);
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: var(--ink);
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

/* ——— Portfolio ——— */

.portfolio-grid {
  display: flex;
  flex-direction: column;
}

.project {
  display: grid;
  grid-template-columns: 8rem 1fr auto;
  gap: 2rem;
  align-items: start;
  padding: 2.75rem 0;
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.project.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.project:first-child {
  border-top: 1px solid var(--line);
}

.project__year {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--mist);
  letter-spacing: 0.04em;
  padding-top: 0.35rem;
}

.project__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}

.project__meta {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: 0.85rem;
}

.project__desc {
  color: var(--ash);
  max-width: 52ch;
  font-size: 0.9875rem;
}

.project__tag {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ash);
  border: 1px solid var(--line-strong);
  padding: 0.4rem 0.75rem;
  white-space: nowrap;
  margin-top: 0.25rem;
}

/* ——— Contact ——— */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.contact-block h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}

.contact-block p,
.contact-block a {
  color: var(--ash);
  font-size: 1rem;
}

.contact-block a {
  transition: color 0.25s;
}

.contact-block a:hover {
  color: var(--ink);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.field label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ash);
}

.field input,
.field textarea,
.field select {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line-strong);
  padding: 0.75rem 0;
  outline: none;
  transition: border-color 0.3s var(--ease);
  border-radius: 0;
  appearance: none;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-bottom-color: var(--ink);
}

.field textarea {
  min-height: 8rem;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-note {
  font-size: 0.8125rem;
  color: var(--mist);
  margin-top: -0.5rem;
}

.form-success {
  display: none;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}

.form-success.is-shown {
  display: block;
  animation: rise 0.6s var(--ease);
}

.form-success h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.form-success p {
  color: var(--ash);
}

/* ——— Footer ——— */

.site-footer {
  padding: 3.5rem 0 2.5rem;
  border-top: 1px solid var(--line);
  background: var(--snow);
}

.site-footer__inner {
  width: min(1120px, calc(100% - 3rem));
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  align-items: end;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
}

.footer-tag {
  font-size: 0.875rem;
  color: var(--ash);
}

.footer-nav {
  display: flex;
  gap: 1.75rem;
}

.footer-nav a {
  font-size: 0.8125rem;
  color: var(--ash);
  transition: color 0.25s;
}

.footer-nav a:hover {
  color: var(--ink);
}

.footer-copy {
  width: 100%;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  color: var(--mist);
  letter-spacing: 0.02em;
}

/* ——— Reveal ——— */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ——— Responsive ——— */

@media (max-width: 900px) {
  .approach {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

  .domain,
  .domain:first-child {
    padding: 2rem 0;
    border-right: none;
  }

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

  .project {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .project__tag {
    justify-self: start;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 1.5rem 1.5rem 2rem;
    background: rgba(247, 247, 245, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.4s var(--ease), opacity 0.4s var(--ease);
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    width: 100%;
    padding: 1rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 0.9375rem;
  }

  .nav a::after {
    display: none;
  }

  .hero__scroll {
    display: none;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 5rem 0;
  }
}