/* AENORA Site — see DESIGN.md for tokens */

:root {
  --black: #000000;
  --white: #ffffff;
  --gray-900: #111111;
  --gray-600: #666666;
  --gray-500: #888888;
  --gray-200: #e5e5e5;
  --gray-100: #f5f5f5;
  --font: 'Rubik', sans-serif;
  --max-w: 1200px;
  --topbar-h: 80px;
}

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

html {
  scroll-behavior: smooth;
}

#demo,
#projects,
#contact {
  scroll-margin-top: var(--topbar-h);
}

body {
  font-family: var(--font);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--gray-900);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

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

/* --- Top bar --- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: var(--topbar-h);
  padding: 1rem clamp(1.5rem, 5vw, 4rem);
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.topbar-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.topbar-wordmark {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--black);
}

.topbar-toggle {
  display: none;
  background: none;
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--black);
  cursor: pointer;
}

.topbar-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.topbar-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--gray-600);
  padding: 0.5rem 0;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: color 0.2s;
}

.topbar-nav a:hover {
  color: var(--black);
}

/* --- Section divider --- */
.section-rule {
  border: none;
  border-top: 1px solid var(--black);
  margin: 0;
}

/* --- Hero --- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100svh;
  padding: calc(var(--topbar-h) + 2rem) clamp(1.5rem, 5vw, 4rem) 4rem;
  background-color: var(--black);
  background-image: url('../images/particle-studio-hero-bg.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  pointer-events: none;
}

.hero--video::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(0, 0, 0, 0.4);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 42rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-200);
  margin-bottom: 2.5rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0.9rem 2.5rem;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--white);
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-primary:hover {
  opacity: 0.88;
}

.hero-copy {
  display: none;
  position: relative;
  z-index: 2;
}

@media (prefers-reduced-motion: reduce) {
  .hero-video {
    display: none;
  }
}

/* --- Projects --- */
.section-projects {
  padding: clamp(4rem, 12vh, 8rem) clamp(1.5rem, 5vw, 4rem);
  background: var(--white);
}

.section-projects .section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.project-row {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  margin-bottom: clamp(4rem, 10vh, 7rem);
}

.project-row--reverse {
  grid-template-columns: 1.5fr 1fr;
}

.project-row:last-child {
  margin-bottom: 0;
}

.project-row--reverse .project-content {
  order: 2;
}

.project-row--reverse .project-art {
  order: 1;
}

.project-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--black);
  margin-bottom: 1rem;
}

.project-title .badge {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-600);
  margin-top: 0.35rem;
}

.project-desc {
  font-size: 1.05rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.project-demo {
  margin-bottom: 1.5rem;
}

.project-demo img {
  width: 100%;
  border: 1px solid var(--gray-200);
}

.link-read-more {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--black);
  border-bottom: 1px solid var(--black);
  padding-bottom: 2px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: opacity 0.2s;
}

.link-read-more:hover {
  opacity: 0.55;
}

.project-art {
  position: relative;
  margin: 0;
  background: transparent;
  border: none;
}

.project-art img {
  display: block;
  width: 100%;
  height: auto;
  max-height: none;
  object-fit: contain;
  object-position: center;
}

.project-art-caption {
  margin-top: 0.65rem;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gray-600);
  text-align: right;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.project-art-caption-line,
.project-art-caption-brand {
  display: block;
}

.project-art-caption-brand {
  white-space: nowrap;
}

@media (min-width: 900px) {
  .project-row:not(.project-row--reverse) .project-art-caption {
    position: absolute;
    top: 50%;
    right: clamp(1.5rem, 5vw, 3rem);
    margin-top: 0;
    transform: translateY(-50%);
  }
}

@media (min-width: 900px) {
  .project-row {
    grid-template-columns: 1fr 1.75fr;
  }

  .project-row--reverse {
    grid-template-columns: 1.75fr 1fr;
  }

  /* Bleed art toward viewport edge for a larger, frameless look */
  .project-row:not(.project-row--reverse) .project-art {
    width: calc(100% + clamp(3rem, 12vw, 10rem));
    margin-right: calc(-1 * clamp(3rem, 12vw, 10rem));
  }

  .project-row--reverse .project-art {
    width: calc(100% + clamp(3rem, 12vw, 10rem));
    margin-left: calc(-1 * clamp(3rem, 12vw, 10rem));
  }
}

/* --- Contact --- */
.section-contact {
  padding: clamp(4rem, 12vh, 8rem) clamp(1.5rem, 5vw, 4rem);
  background: var(--white);
}

.section-contact .section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-list a {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--black);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: opacity 0.2s;
}

.contact-list a:hover {
  opacity: 0.55;
}

@media (max-width: 899px) {
  .contact-list a {
    font-size: 0.9rem;
    word-break: break-word;
  }
}

/* --- Legal --- */
.page-legal {
  padding: clamp(3rem, 8vh, 5rem) clamp(1.5rem, 5vw, 4rem) clamp(5rem, 12vh, 8rem);
}

.page-legal .legal-inner {
  max-width: 42rem;
  margin: 0 auto;
}

.page-legal h1 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  color: var(--black);
  margin-bottom: 0.5rem;
}

.page-legal .legal-meta {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-bottom: 2rem;
}

.page-legal .legal-note {
  font-size: 0.9rem;
  color: var(--gray-600);
  padding: 1rem 1.25rem;
  border: 1px solid var(--gray-200);
  background: var(--gray-100);
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.page-legal nav.legal-toc {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--gray-200);
}

.page-legal nav.legal-toc p {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 0.75rem;
}

.page-legal nav.legal-toc ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-legal nav.legal-toc a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-600);
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}

.page-legal nav.legal-toc a:hover {
  color: var(--black);
}

.page-legal section {
  margin-bottom: 3rem;
}

.page-legal h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 1rem;
  padding-top: 0.5rem;
}

.page-legal h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--black);
  margin: 1.5rem 0 0.75rem;
}

.page-legal p,
.page-legal li {
  font-size: 0.95rem;
  color: var(--gray-600);
  margin-bottom: 0.85rem;
}

.page-legal ul,
.page-legal ol {
  margin: 0 0 1rem 1.25rem;
  color: var(--gray-600);
}

.page-legal li {
  margin-bottom: 0.4rem;
}

.page-legal a {
  color: var(--black);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-legal a:hover {
  opacity: 0.6;
}

/* --- Stub / minimal pages --- */
.page-stub {
  min-height: calc(100svh - var(--topbar-h));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem clamp(1.5rem, 5vw, 4rem);
}

.page-stub p {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-500);
}

/* --- Mobile --- */
@media (max-width: 899px) {
  .topbar-toggle {
    display: block;
  }

  .topbar-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem clamp(1.5rem, 5vw, 4rem) 1.5rem;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
  }

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

  .topbar-nav a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--gray-200);
  }

  .topbar-nav a:last-child {
    border-bottom: none;
  }

  .topbar {
    flex-wrap: wrap;
  }

  .project-row,
  .project-row--reverse {
    grid-template-columns: 1fr;
  }

  .project-row--reverse .project-content,
  .project-row--reverse .project-art {
    order: unset;
  }

  .project-art {
    display: none;
  }

  .hero {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
  }

  .hero-inner {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .hero-copy {
    position: static;
    margin-top: auto;
    padding-top: 2rem;
    text-align: center;
    align-self: center;
  }
}