/* ── RESET & BASE ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --black: #000;
  --white: #fff;
  --gray: #888;
  --gray-light: #e8e8e8;
  --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-serif: "Noto Serif", Georgia, serif;
  --nav-h: 64px;
  --pad: clamp(1.5rem, 5vw, 4rem);
  --radius: 8px;
  --gap: clamp(0.75rem, 1.5vw, 1.25rem);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background: var(--white);
  color: var(--black);
  overflow-x: hidden;
}

body.menu-open { overflow: hidden; }

::selection {
  background: var(--black);
  color: var(--white);
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

/* ── NAVBAR ── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  padding: 0 var(--pad);
  background: var(--white);
  border-bottom: 1px solid var(--black);
}

.nav-logo {
  font-family: var(--font-sans);
  font-size: clamp(0.7rem, 1.4vw, 0.9rem);
  font-weight: bold;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.lang-btn {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: bold;
  letter-spacing: 0.12em;
  background: none;
  border: 1px solid var(--black);
  padding: 0.3rem 0.65rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.lang-btn:hover { background: var(--black); color: var(--white); }

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px; height: 18px;
  background: none; border: none;
  cursor: pointer; padding: 0;
}
.hamburger span {
  display: block;
  width: 100%; height: 1.5px;
  background: var(--black);
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.is-active span:nth-child(1) { transform: translateY(8.25px) rotate(45deg); }
.hamburger.is-active span:nth-child(2) { opacity: 0; }
.hamburger.is-active span:nth-child(3) { transform: translateY(-8.25px) rotate(-45deg); }

/* ── NAV OVERLAY ── */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--black);
  color: var(--white);
  z-index: 99;
  display: flex;
  align-items: center;
  padding: var(--pad);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}
.nav-overlay.is-open { opacity: 1; pointer-events: all; }

.nav-close {
  position: absolute;
  top: calc(var(--nav-h) / 2);
  right: var(--pad);
  transform: translateY(-50%);
  font-size: 2rem; font-weight: 300;
  background: none; border: none;
  color: var(--white); cursor: pointer; line-height: 1;
}

.overlay-nav ul { list-style: none; }
.overlay-nav ul li { overflow: hidden; }
.overlay-nav ul li a {
  display: block;
  font-family: var(--font-sans);
  font-size: clamp(2.2rem, 6vw, 5.5rem);
  font-weight: bold;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--white);
  transform: translateY(110%);
  transition: transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1), opacity 0.2s;
}
.nav-overlay.is-open .overlay-nav ul li a { transform: translateY(0); }
.overlay-nav ul li:nth-child(1) a { transition-delay: 0.05s; }
.overlay-nav ul li:nth-child(2) a { transition-delay: 0.09s; }
.overlay-nav ul li:nth-child(3) a { transition-delay: 0.13s; }
.overlay-nav ul li:nth-child(4) a { transition-delay: 0.17s; }
.overlay-nav ul li:nth-child(5) a { transition-delay: 0.21s; }
.overlay-nav ul li:nth-child(6) a { transition-delay: 0.25s; }
.overlay-nav ul li a:hover { opacity: 0.4; }

/* ── SECTIONS ── */
.section {
  padding: clamp(5rem, 11vw, 9rem) var(--pad);
  scroll-margin-top: var(--nav-h);
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-heading {
  font-family: var(--font-sans);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: bold;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.section-body {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.8;
  max-width: 680px;
}

.section-body p { white-space: pre-line; }

/* ── HERO ── */
.section-hero {
  min-height: 100vh;
  padding-top: calc(var(--nav-h) + clamp(5rem, 10vw, 8rem));
  padding-bottom: clamp(5rem, 10vw, 8rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--pad);
  align-items: end;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.hero-heading h1 {
  font-family: var(--font-sans);
  font-size: clamp(4.5rem, 13vw, 12rem);
  font-weight: bold;
  letter-spacing: -0.04em;
  line-height: 0.88;
}

.hero-quote { align-self: end; padding-bottom: 0.5rem; }

.hero-quote blockquote p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.hero-quote blockquote cite {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-style: normal;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
}

/* ── SOFTWARE LIST ── */
.software-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--black);
}

.software-item {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: clamp(2rem, 4vw, 4rem);
  padding: clamp(2rem, 4vw, 3rem) 0;
  border-bottom: 1px solid var(--gray-light);
  align-items: start;
  transition: background 0.2s;
}

.software-item:hover { background: #fafafa; }

.software-item-index {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--gray);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.software-item-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
}

.software-item-name {
  font-family: var(--font-sans);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: bold;
  letter-spacing: -0.03em;
  line-height: 1;
}

.software-item-badge {
  font-family: var(--font-sans);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.22rem 0.6rem;
  border: 1px solid;
  border-radius: 2rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge-deployed   { border-color: var(--black); color: var(--black); }
.badge-in-progress { border-color: var(--gray); color: var(--gray); }
.badge-planned    { border-color: var(--gray-light); color: var(--gray); }

.software-item-tagline {
  font-family: var(--font-serif);
  font-size: clamp(0.9rem, 1.5vw, 1.05rem);
  color: var(--gray);
  line-height: 1.6;
  margin-bottom: 1.2rem;
}

.software-item-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.4rem;
}

.software-item-tech span {
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  background: var(--gray-light);
  border-radius: 2px;
}

.software-item-link {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: bold;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: opacity 0.2s;
  text-decoration: none;
}
.software-item-link:hover { opacity: 0.5; }

.software-item-preview {
  aspect-ratio: 16 / 10;
  background: var(--gray-light);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
  transition: border-color 0.2s;
}
.software-item:hover .software-item-preview { border-color: var(--black); }

.software-item-preview img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.software-item:hover .software-item-preview img { transform: scale(1.03); }

.software-item-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: var(--gray);
  text-transform: uppercase;
}

/* ── SERVICES ── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.service-card {
  border: 1px solid var(--black);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2.2rem);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: background 0.2s, color 0.2s;
}
.service-card:hover { background: var(--black); color: var(--white); }
.service-card:hover .service-body { color: rgba(255,255,255,0.6); }
.service-card:hover .service-card-link { color: var(--white); }

.service-title {
  font-family: var(--font-sans);
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  font-weight: bold;
  letter-spacing: -0.01em;
}

.service-body {
  font-family: var(--font-serif);
  font-size: clamp(0.85rem, 1.3vw, 0.95rem);
  line-height: 1.7;
  color: var(--gray);
  flex: 1;
}

.service-card-link {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: bold;
  margin-top: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--black);
  transition: color 0.2s;
}

/* ── PEOPLE ── */
.people-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.people-portrait img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  object-position: top;
  border: 1px solid var(--black);
  border-radius: var(--radius);
}

.people-name {
  font-family: var(--font-sans);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: bold;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
  margin-top: 1rem;
}

.people-role {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 2rem;
}

/* ── TESTIMONIALS ── */
.testimonials-wrap { max-width: 900px; }

.testimonial-slide blockquote p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.3rem, 3vw, 2.1rem);
  line-height: 1.65;
  margin-bottom: 2rem;
}

.testimonial-slide blockquote cite {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
}

.testimonial-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.t-prev, .t-next {
  font-family: var(--font-sans);
  font-size: 1rem;
  background: none;
  border: 1px solid var(--black);
  width: 2.4rem; height: 2.4rem;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
}
.t-prev:hover, .t-next:hover { background: var(--black); color: var(--white); }

.t-counter {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--gray);
}

/* ── TECHNOLOGIES ── */
.tech-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
}

.tech-card {
  border: 1px solid var(--black);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.5vw, 1.75rem) 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  text-align: center;
  transition: background 0.2s;
}
.tech-card:hover { background: var(--black); color: var(--white); }
.tech-card:hover .tech-card-icon { filter: invert(1); }

.tech-card-icon {
  width: 36px; height: 36px;
  object-fit: contain;
  display: block;
  transition: filter 0.2s;
}

.tech-card-name {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: bold;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.2;
}

/* ── CONTACT ── */
.contact-form { max-width: 680px; }

.form-field { margin-bottom: 2.5rem; }

.form-field label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
  color: var(--gray);
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 0.8rem 0;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  background: none;
  border: none;
  border-bottom: 1px solid var(--gray-light);
  outline: none;
  color: var(--black);
  resize: none;
  transition: border-color 0.2s;
}

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

.btn-send {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: bold;
  padding: 0.9rem 2.5rem;
  background: var(--black);
  color: var(--white);
  border: 1px solid var(--black);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-send:hover { background: var(--white); color: var(--black); }

/* ── FOOTER ── */
.site-footer {
  padding: clamp(3rem, 6vw, 5rem) var(--pad) clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--black);
  background: var(--white);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--pad);
  align-items: start;
}

.footer-logo {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: bold;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

address {
  font-style: normal;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  line-height: 1.9;
  color: var(--gray);
}

.footer-contact {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  line-height: 1.9;
}

.footer-contact a { color: var(--gray); }
.footer-contact a:hover { color: var(--black); }

.footer-socials,
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.2rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.footer-socials a,
.footer-legal a { color: var(--gray); transition: color 0.2s; }
.footer-socials a:hover,
.footer-legal a:hover { color: var(--black); }

/* ── LEGAL PAGES ── */
.legal-page {
  max-width: 760px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 5rem) var(--pad) 6rem;
}

.legal-page h1 {
  font-family: var(--font-sans);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: bold;
  letter-spacing: -0.04em;
  margin-bottom: 3rem;
}

.legal-page h2 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: bold;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.legal-page p,
.legal-page address {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--gray);
  font-style: normal;
  margin-bottom: 0.75rem;
}

.legal-page a { color: var(--black); text-decoration: underline; }

.legal-nav {
  display: flex;
  align-items: center;
  height: var(--nav-h);
  padding: 0 var(--pad);
  border-bottom: 1px solid var(--black);
  gap: 2rem;
}

.legal-nav-logo {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: bold;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.legal-nav-back {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  transition: color 0.2s;
}
.legal-nav-back:hover { color: var(--black); }

/* ── CASE STUDY PAGES ── */
.cs-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + clamp(3rem, 8vw, 6rem)) var(--pad) clamp(4rem, 8vw, 8rem);
}

.cs-hero {
  border-bottom: 1px solid var(--black);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.cs-number {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 1.5rem;
}

.cs-title {
  font-family: var(--font-sans);
  font-size: clamp(2.5rem, 7vw, 6rem);
  font-weight: bold;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.cs-lead {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  line-height: 1.7;
  color: var(--gray);
  max-width: 700px;
}

.cs-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
}

.cs-section h2 {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 1.25rem;
}

.cs-section p {
  font-family: var(--font-serif);
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  line-height: 1.8;
  color: var(--black);
  margin-bottom: 1rem;
}

.cs-projects {
  grid-column: 1 / -1;
  margin-top: clamp(2rem, 4vw, 4rem);
}

.cs-projects h2 {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
  border-top: 1px solid var(--black);
  padding-top: clamp(1.5rem, 3vw, 2.5rem);
}

.cs-projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.cs-project-card {
  border: 1px solid var(--black);
  border-radius: var(--radius);
  overflow: hidden;
}

.cs-project-card-image {
  aspect-ratio: 4/3;
  background: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
}

.cs-project-card-caption {
  padding: 1rem 1.1rem 1.2rem;
  border-top: 1px solid var(--black);
}

.cs-project-card-title {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: bold;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.cs-project-card-meta {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  color: var(--gray);
}

.cs-cta {
  grid-column: 1 / -1;
  border: 1px solid var(--black);
  border-radius: var(--radius);
  padding: clamp(2rem, 4vw, 3.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-top: clamp(2rem, 4vw, 4rem);
  flex-wrap: wrap;
}

.cs-cta-text {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 2vw, 1.3rem);
  font-weight: bold;
  letter-spacing: -0.02em;
}

.cs-cta-link {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: bold;
  padding: 0.9rem 2.5rem;
  background: var(--black);
  color: var(--white);
  border: 1px solid var(--black);
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}
.cs-cta-link:hover { background: var(--white); color: var(--black); }

/* ── SCROLL ANIMATIONS ── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .tech-grid { grid-template-columns: repeat(3, 1fr); }
  .software-item { grid-template-columns: 1fr 240px; }
}

@media (max-width: 900px) {
  .section-hero {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .software-item {
    grid-template-columns: 1fr;
  }

  .software-item-preview {
    max-width: 400px;
  }

  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(3, 1fr); }

  .people-inner { grid-template-columns: 1fr; }
  .people-portrait { max-width: 300px; }

  .footer-inner { grid-template-columns: 1fr; gap: 2.5rem; }

  .cs-body { grid-template-columns: 1fr; }
  .cs-projects-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .services-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .cs-projects-grid { grid-template-columns: 1fr; }
  .cs-cta { flex-direction: column; align-items: flex-start; }
}