:root {
  --bg: #ffffff;
  --text: #1f1f1f;
  --muted: #6b6b6b;
  --accent: #111111;
  --border: #e4e4e4;
  --chip-bg: #f5f5f5;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue",
    Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.nowrap {
  white-space: nowrap;
}

/* HEADER */

@keyframes fadeUpSoft {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

header {
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
}

.top-bar {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Brand text only */

.brand-text-only {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-line-main {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.brand-line-sub {
  font-size: 0.8rem;
  color: var(--muted);
}

/* Mobile nav toggle */

.mobile-nav-toggle {
  display: none;
  margin-left: auto;
  border: none;
  background: transparent;
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
}

/* Nav */

.main-nav {
  margin-left: 32px;
  display: flex;
  gap: 32px;
  flex: 1;
}

.main-nav a {
  position: relative;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--muted);
  white-space: nowrap;
  padding-bottom: 4px;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s ease-out;
}

.main-nav a:hover {
  color: var(--accent);
}

.main-nav a:hover::after {
  width: 100%;
}

section[id] {
  scroll-margin-top: 90px; /* space under sticky header */
}

/* Language dropdown */

.lang-switcher {
  position: relative;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  padding: 4px 10px;
  background: var(--chip-bg);
  cursor: pointer;
}

.lang-label {
  color: var(--muted);
}

.lang-current {
  font-weight: 500;
}

.lang-chevron {
  font-size: 0.7rem;
  color: var(--muted);
}

.lang-menu {
  position: absolute;
  right: 0;
  top: 110%;
  background: #fff;
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.08);
  padding: 4px;
  display: none;
  min-width: 120px;
  z-index: 30;
}

.lang-menu.open {
  display: block;
}

.lang-option {
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  padding: 6px 10px;
  font-size: 0.8rem;
  cursor: pointer;
}

.lang-option:hover {
  background: var(--chip-bg);
}

/* MAIN LAYOUT */

main {
  max-width: 1100px;
  margin: 32px auto 80px;
  padding: 0 24px;
}

/* HERO */

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 48px;
  position: relative;
  padding: 32px 24px 40px;
  border-radius: 24px;
  background: radial-gradient(circle at top left, #f5f5f5 0, #ffffff 45%, #f8f8f8 100%);
  border: 1px solid rgba(0, 0, 0, 0.03);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.04);
}

@media (max-width: 800px) {
  .hero {
    padding: 24px 18px 32px;
    border-radius: 18px;
    box-shadow: 0 12px 26px rgba(0, 0, 0, 0.04);
  }
}

.hero-logo-wrapper {
  margin-bottom: 8px;
}

.hero-logo {
  max-width: 720px;
  width: 60vw;
  height: auto;
}

.hero-logo-wrapper,
.hero-text {
  animation: fadeUpSoft 0.5s ease-out forwards;
  max-width: 720px;
}

.hero-text {
  animation-delay: 0.08s;
}

.hero-kicker {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 8px;
}

.hero-title {
  font-size: clamp(2.4rem, 4vw, 3rem);
  font-weight: 300;
  margin: 0 0 12px;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--muted);
}

.hero-meta {
  margin-top: 18px;
  font-size: 0.9rem;
  color: var(--muted);
}

/* VIDEO */

.hero-video-wrapper {
  margin: 20px auto 0;
  max-width: 720px;
  width: 100%;
}

.hero-video {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}

/* PARTNER STRIP */

.partner-strip {
  margin-top: 28px;
  padding: 14px 18px;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  background: #fafafa;
  display: flex;
  align-items: center;
  gap: 16px;
}

.partner-logos {
  display: flex;
  align-items: center;
  justify-content: space-evenly; /* distribute logos more evenly */
  gap: 16px;
  flex: 1;                       /* use the remaining width */
  flex-wrap: wrap;
}

.partner-strip-secondary {
  margin-top: 12px;
}

.partner-label {
  font-size: 0.85rem;
  color: var(--muted);
}

.partner-logos {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.partner-logos img {
  height: 56px;
  width: auto;
}

/* GRID CONTENT */

.grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.2fr);
  gap: 32px;
  margin-top: 40px;
  align-items: flex-start;
}

.grid > div:first-child {
  background: #ffffff;
  border-radius: 18px;
  border: 1px solid rgba(0, 0, 0, 0.03);
  padding: 24px 22px;
}

aside {
  border-radius: 18px;
}

section {
  margin-bottom: 40px;
}

h2 {
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}

h2::after {
  content: "";
  display: block;
  width: 36px;
  height: 2px;
  margin-top: 8px;
  background: #111111;
  opacity: 0.12;
}

h3 {
  font-size: 1.05rem;
  margin-top: 20px;
  margin-bottom: 6px;
}

p {
  margin: 0 0 10px;
}

ul {
  margin: 6px 0 10px 20px;
  padding: 0;
}

li {
  margin-bottom: 4px;
}

/* SIDEBAR */

.pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-right: 6px;
  margin-bottom: 6px;
}

.sidebar-card {
  border: 1px solid var(--border);
  padding: 16px 18px;
  border-radius: 12px;
  font-size: 0.9rem;
  background: #fafafa;
  margin-bottom: 20px;
}

.sidebar-card h3 {
  margin-top: 0;
  font-size: 0.98rem;
}

/* TEAM SECTION */

.team-section {
  margin-top: 40px;
  padding: 28px 24px;
  border-radius: 18px;
  border: 1px solid rgba(0, 0, 0, 0.03);
  background: #fafafa;
}

.team-header {
  max-width: 700px;
  margin-bottom: 20px;
}

.team-intro {
  font-size: 0.95rem;
  color: var(--muted);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 10px;
}

.team-card {
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #ffffff;
  padding: 14px 14px 16px;
  font-size: 0.9rem;
}

.team-card h3 {
  margin-top: 0;
  margin-bottom: 4px;
  font-size: 1rem;
}

.team-card h3 a {
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.team-card h3 a:hover {
  border-bottom-color: rgba(0, 0, 0, 0.3);
}

.team-role {
  font-weight: 500;
  margin-bottom: 6px;
}

.team-bio {
  font-size: 0.85rem;
  color: var(--muted);
}

/* TUTORIAL SECTION */

.tutorial-section {
  margin-top: 40px;
  padding: 28px 24px;
  border-radius: 18px;
  border: 1px solid rgba(0, 0, 0, 0.03);
  background: #ffffff;
}

.tutorial-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.4fr);
  gap: 24px;
  align-items: center;
}

.tutorial-text p {
  font-size: 0.95rem;
}

.tutorial-video-wrapper {
  width: 100%;
}

/* INTEGRATION SECTION */

.integration-section {
  margin-top: 32px;
  padding: 24px 24px 26px;
  border-radius: 18px;
  border: 1px solid rgba(0, 0, 0, 0.03);
  background: #fafafa;
}

.integration-inner p {
  font-size: 0.95rem;
}

.cta-button {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--accent);
  background: #ffffff;
  cursor: pointer;
}

.cta-button:hover {
  background: #111111;
  color: #ffffff;
}

/* CONTACT SECTION */

.contact-section {
  margin-top: 32px;
  padding: 24px 24px 26px;
  border-radius: 18px;
  border: 1px solid rgba(0, 0, 0, 0.03);
  background: #ffffff;
}

.contact-section p {
  font-size: 0.95rem;
}

.contact-email {
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--accent);
  border-bottom: 1px solid rgba(0, 0, 0, 0.15);
}

.contact-email:hover {
  border-bottom-color: rgba(0, 0, 0, 0.5);
}

/* AI NOTE */

.ai-note {
  margin-top: 32px;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: left;
}

/* FOOTER */

footer {
  border-top: 1px solid var(--border);
  padding: 18px 24px;
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  justify-content: center;
}

footer .footer-inner {
  max-width: 1100px;
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-logos img {
  height: 40px;
  margin-left: 10px;
  opacity: 0.9;
}

/* RESPONSIVE */

@media (max-width: 900px) {
  .top-bar {
    align-items: center;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin-left: 0;
    padding: 8px 24px 12px;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    display: none;
    flex-wrap: wrap;
    gap: 12px 18px;
    z-index: 15;
    justify-content: flex-start;
  }

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

  header {
    padding: 10px 18px;
  }

  .partner-strip {
    flex-direction: column;
    align-items: flex-start;
  }

  .partner-logos {
    flex-wrap: wrap;
  }

  .tutorial-inner {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 800px) {
  .grid {
    grid-template-columns: 1fr;
  }

  main {
    margin-top: 24px;
  }

  .hero-logo {
    max-width: 360px;
    width: 75vw;
  }
}

/* Infinite scrolling partner logos */
.in-progress-partners {
  margin-top: 22px;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  background: #fafafa;
  overflow: hidden;
}

.logo-scroll-container {
  width: 100%;
  overflow: hidden;
  position: relative;
}

.logo-track {
  display: flex;
  gap: 32px;
  width: max-content;   
  animation: scrollLogos 40s linear infinite;
}

.logo-track img {
  max-height: 46px;    /* smaller, more controlled */
  width: auto;
  opacity: 0.9;
  transition: opacity 0.2s ease;
}

/* Slightly smaller for the Architectes.org logo */
.logo-track img[alt="Architectes.org"] {
  max-height: 40px;
}

.logo-track img:hover {
  opacity: 1;
}

@keyframes scrollLogos {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@media (max-width: 800px) {
  .logo-track img {
    height: 42px;
  }
}