/* ==========================================================================
   SANGUINE STUDIO — Design System
   Dark brown (#372D2D) + warm cream/off-white. Editorial, technical, flat.
   ========================================================================== */

:root {
  /* Palette */
  --color-bg: #372D2D;
  --color-bg-alt: #3f3432;
  --color-cream: #f2ece2;
  --color-cream-dim: rgba(242, 236, 226, 0.62);
  --color-cream-faint: rgba(242, 236, 226, 0.4);
  --color-border: rgba(242, 236, 226, 0.16);
  --color-border-strong: rgba(242, 236, 226, 0.32);

  /* Type */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', ui-monospace, monospace;

  /* Layout */
  --container-max: 1440px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section-py: clamp(4.5rem, 10vw, 8.5rem);

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-cream);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ------------------------- Layout helpers ------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-cream-dim);
  margin-bottom: 1rem;
}

.card-index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--color-cream-faint);
}

h1,
h2,
h3 {
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.08;
}

h1 em,
h2 em {
  font-style: italic;
  font-weight: 300;
  color: var(--color-cream-dim);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

/* ------------------------- Buttons ------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.btn-outline {
  border: 1px solid var(--color-border-strong);
  color: var(--color-cream);
}

.btn-outline:hover {
  background: var(--color-cream);
  color: var(--color-bg);
  border-color: var(--color-cream);
}

.btn-solid {
  background: var(--color-cream);
  color: var(--color-bg);
  border: 1px solid var(--color-cream);
}

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

/* ------------------------- Header ------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(55, 45, 45, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.logo {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

.site-nav a:not(.btn) {
  position: relative;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--color-cream-dim);
  padding-bottom: 0.2rem;
  transition: color 0.25s var(--ease);
}

.site-nav a:not(.btn)::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--color-cream);
  transition: right 0.3s var(--ease);
}

.site-nav a:not(.btn):hover {
  color: var(--color-cream);
}

.site-nav a:not(.btn):hover::after {
  right: 0;
}

.nav-toggle {
  display: none;
  width: 32px;
  height: 22px;
  position: relative;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-cream);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), top 0.3s var(--ease);
}

.nav-toggle span {
  top: 50%;
}

.nav-toggle span::before {
  top: -8px;
}

.nav-toggle span::after {
  top: 8px;
}

.nav-toggle.is-open span {
  background: transparent;
}

.nav-toggle.is-open span::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle.is-open span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ------------------------- Hero ------------------------- */
.hero {
  padding-top: clamp(3rem, 8vw, 5.5rem);
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: flex;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 640px;
}

.hero-heading {
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  margin-bottom: 1.75rem;
}

.hero-copy {
  max-width: 34ch;
  font-size: 1.05rem;
  color: var(--color-cream-dim);
  margin-bottom: 2.25rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-cream-faint);
  margin-bottom: 2.5rem;
}

.hero-meta .divider {
  width: 1px;
  height: 12px;
  background: var(--color-border-strong);
}

/* ------------------------- Fixed 3D background ------------------------- */
#canvas-container {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  opacity: 0.24;
  pointer-events: none;
}

#canvas-container canvas {
  width: 100% !important;
  height: 100% !important;
}

.bg-mark {
  position: fixed;
  z-index: 0;
  left: 1.5rem;
  bottom: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cream-faint);
  opacity: 0.5;
  pointer-events: none;
}

/* Header, main content, and footer sit above the fixed background */
.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

/* ------------------------- Section heading ------------------------- */
.section-heading {
  max-width: 42ch;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.section-heading h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.75rem);
}

/* ------------------------- Capabilities ------------------------- */
.capabilities {
  padding-block: var(--section-py);
  border-bottom: 1px solid var(--color-border);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.capability-card {
  padding: 2.25rem 1.75rem;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.3s var(--ease);
}

.capability-card:hover {
  background: rgba(242, 236, 226, 0.03);
}

.capability-card h3 {
  font-size: 1.15rem;
  margin: 1.25rem 0 0.85rem;
}

.capability-card p {
  font-size: 0.92rem;
  color: var(--color-cream-dim);
  line-height: 1.6;
}

/* ------------------------- Studio ------------------------- */
.studio {
  padding-block: var(--section-py);
  border-bottom: 1px solid var(--color-border);
}

.studio-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(2rem, 6vw, 5rem);
}

.studio-copy h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.75rem);
  margin-bottom: 1.5rem;
}

.studio-copy p {
  max-width: 52ch;
  font-size: 1.02rem;
  color: var(--color-cream-dim);
}

.studio-list {
  display: flex;
  flex-direction: column;
  align-self: start;
}

.studio-list li {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--color-border);
  font-size: 1rem;
}

.studio-list li:last-child {
  border-bottom: 1px solid var(--color-border);
}

/* ------------------------- Contact ------------------------- */
.contact {
  padding-block: var(--section-py);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
}

.contact-intro h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.75rem);
  margin-bottom: 1.5rem;
}

.contact-intro p {
  max-width: 42ch;
  color: var(--color-cream-dim);
  margin-bottom: 2.5rem;
}

.contact-details {
  display: flex;
  gap: 3rem;
}

.contact-details dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cream-faint);
  margin-bottom: 0.5rem;
}

.contact-details dd a {
  border-bottom: 1px solid var(--color-border-strong);
  transition: opacity 0.25s var(--ease);
}

.contact-details dd a:hover {
  opacity: 0.7;
}

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

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.form-row label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cream-faint);
}

.form-row input,
.form-row textarea {
  border: 1px solid var(--color-border);
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  transition: border-color 0.25s var(--ease);
  resize: vertical;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-border-strong);
}

.contact-form .btn {
  align-self: flex-start;
  margin-top: 0.5rem;
}

.form-status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--color-cream-dim);
  min-height: 1em;
}

/* ------------------------- News / article pages ------------------------- */
.site-nav a[aria-current='page'] {
  color: var(--color-cream);
}

.site-nav a[aria-current='page']::after {
  right: 0;
}

.page-intro {
  padding-top: clamp(3rem, 8vw, 5.5rem);
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
  border-bottom: 1px solid var(--color-border);
}

.page-heading {
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  margin-bottom: 1.75rem;
}

.page-copy {
  max-width: 44ch;
  font-size: 1.05rem;
  color: var(--color-cream-dim);
}

.news-section {
  padding-block: var(--section-py);
}

.news-list {
  border-bottom: 1px solid var(--color-border);
}

.news-item {
  display: grid;
  grid-template-columns: 200px 1fr auto;
  gap: clamp(1rem, 4vw, 3rem);
  align-items: start;
  padding: 2.25rem 0;
  border-top: 1px solid var(--color-border);
  transition: background-color 0.3s var(--ease);
}

.news-item:hover {
  background: rgba(242, 236, 226, 0.03);
}

.news-meta,
.article-meta {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cream-faint);
}

.news-text h2 {
  font-size: clamp(1.25rem, 2.2vw, 1.75rem);
  margin-bottom: 0.75rem;
}

.news-text p {
  max-width: 56ch;
  font-size: 0.95rem;
  color: var(--color-cream-dim);
  line-height: 1.6;
}

.news-arrow {
  font-family: var(--font-mono);
  color: var(--color-cream-faint);
  transition: transform 0.3s var(--ease), color 0.3s var(--ease);
}

.news-item:hover .news-arrow {
  transform: translateX(6px);
  color: var(--color-cream);
}

.news-empty {
  padding: 2.25rem 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-cream-dim);
}

.article {
  padding-top: clamp(3rem, 8vw, 5.5rem);
  padding-bottom: var(--section-py);
}

.article[hidden],
#newsListView[hidden] {
  display: none;
}

.back-link {
  display: inline-block;
  margin-bottom: 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-cream-dim);
  transition: color 0.25s var(--ease);
}

.back-link:hover {
  color: var(--color-cream);
}

.article-meta {
  flex-direction: row;
  gap: 1.5rem;
  margin-bottom: 1.25rem;
}

.article-title {
  max-width: 24ch;
  font-size: clamp(2.2rem, 4.6vw, 3.8rem);
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.article-body {
  max-width: 68ch;
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-cream-dim);
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.article-body > * + * {
  margin-top: 1.4rem;
}

.article-body h2 {
  font-size: 1.5rem;
  color: var(--color-cream);
  margin-top: 2.5rem;
}

.article-body h3 {
  font-size: 1.2rem;
  color: var(--color-cream);
  margin-top: 2rem;
}

.article-body a {
  color: var(--color-cream);
  border-bottom: 1px solid var(--color-border-strong);
}

.article-body strong {
  font-weight: 500;
  color: var(--color-cream);
}

.article-body ul {
  list-style: none;
}

.article-body li {
  padding: 0.6rem 0;
  border-top: 1px solid var(--color-border);
}

.article-body li:last-child {
  border-bottom: 1px solid var(--color-border);
}

.article-body blockquote {
  padding-left: 1.5rem;
  border-left: 1px solid var(--color-border-strong);
  font-style: italic;
  color: var(--color-cream);
}

/* ------------------------- Footer ------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: 2.5rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

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

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-cream-dim);
  transition: color 0.25s var(--ease);
}

.footer-links a:hover {
  color: var(--color-cream);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--color-cream-faint);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .capabilities-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .studio-list {
    margin-top: 0.5rem;
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 84px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s var(--ease);
  }

  .site-nav.is-open {
    max-height: 320px;
  }

  .site-nav a:not(.btn) {
    width: 100%;
    padding: 1rem var(--gutter);
    border-bottom: 1px solid var(--color-border);
  }

  .nav-cta {
    margin: 1.25rem var(--gutter) 1.5rem;
  }

  .hero-content {
    align-items: flex-start;
    max-width: none;
  }

  .news-item {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .news-meta {
    flex-direction: row;
    gap: 1.25rem;
  }

  .news-arrow {
    display: none;
  }

  .bg-mark {
    display: none;
  }
}

@media (max-width: 640px) {
  .capabilities-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: none;
  }

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