:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  --color-bg: #f7f6f2;
  --color-surface: #ffffff;
  --color-surface-dim: #eeece6;
  --color-text: #191817;
  --color-muted: #5e5b56;
  --color-border: #dcd8d0;
  --color-border-dark: #191817;
  --color-accent: #2c332d;
  --color-accent-soft: #e2e6e3;
  --color-white: #ffffff;
  --color-danger: #a32d2d;
  --color-focus: #191817;
  
  --spacing-4: 4px;
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-24: 24px;
  --spacing-40: 40px;
  --spacing-64: 64px;

  --max-width: 1200px;
  --frame-offset: 8px;
  --transition-speed: 0.2s;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6, .brand-text {
  font-family: var(--font-sans);
  color: var(--color-text);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.03em;
  overflow-wrap: anywhere;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 600;
  letter-spacing: -0.04em;
}

h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
}

h3 {
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
}

p, li, dd, dt, td, th {
  color: var(--color-text);
  font-size: 1rem;
  overflow-wrap: anywhere;
}

p.lead {
  font-size: 1.2rem;
  line-height: 1.5;
  color: var(--color-muted);
}

a {
  color: var(--color-text);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-muted);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--spacing-24);
}

/* Header */
.site-header {
  height: 64px;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  position: relative;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-wrapper {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-8);
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.brand-text {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-24);
}

.nav-link {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-muted);
  transition: color var(--transition-speed);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--color-text);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-text);
  color: var(--color-white);
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 0;
  border: 1px solid var(--color-text);
  transition: background-color var(--transition-speed), color var(--transition-speed);
  white-space: nowrap;
}

.header-cta:hover {
  background-color: transparent;
  color: var(--color-text);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  width: 40px;
  height: 40px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

.mobile-nav-toggle svg {
  width: 20px;
  height: 20px;
}

/* Framed Canvas Card System */
.framed-canvas {
  position: relative;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-dark);
  padding: var(--spacing-24);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-speed);
  min-width: 0;
}

.framed-canvas::before {
  content: "";
  position: absolute;
  top: var(--frame-offset);
  left: var(--frame-offset);
  right: calc(var(--frame-offset) * -1);
  bottom: calc(var(--frame-offset) * -1);
  background-color: var(--color-surface-dim);
  border: 1px solid var(--color-border);
  z-index: -1;
  pointer-events: none;
  transition: transform var(--transition-speed);
}

.framed-canvas:hover {
  transform: translate(-3px, -3px);
}

.framed-canvas:hover::before {
  transform: translate(3px, 3px);
}

.card-media {
  position: relative;
  background-color: var(--color-surface-dim);
  aspect-ratio: 16 / 10;
  overflow: hidden;
  margin-bottom: var(--spacing-24);
  border: 1px solid var(--color-border);
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-category {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--spacing-8);
}

.card-title {
  margin-bottom: var(--spacing-16);
}

.card-excerpt {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: var(--spacing-24);
  flex-grow: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-8);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--color-text);
  border-bottom: 2px solid var(--color-text);
  align-self: flex-start;
  padding-bottom: 2px;
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-speed);
}

.card-link:hover svg {
  transform: translateX(4px);
}

/* Sections */
.section {
  padding-block: var(--spacing-64);
}

.hero {
  padding-block: var(--spacing-64) var(--spacing-40);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-40);
  align-items: end;
}

.hero-content {
  min-width: 0;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background-color: var(--color-surface-dim);
  padding: 4px 10px;
  margin-bottom: var(--spacing-24);
  border: 1px solid var(--color-border);
}

.hero-description {
  margin-top: var(--spacing-24);
  font-size: 1.15rem;
  color: var(--color-muted);
  max-width: 60ch;
}

.hero-sidebar {
  min-width: 0;
  padding: var(--spacing-24);
  background: var(--color-surface);
  border: 1px solid var(--color-border-dark);
}

.stat-item {
  display: flex;
  flex-direction: column;
  padding-bottom: var(--spacing-16);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-16);
}

.stat-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
  margin-bottom: 0;
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 600;
  line-height: 1;
  color: var(--color-text);
  margin-bottom: var(--spacing-12);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-40);
  margin-top: var(--spacing-40);
}

/* Supporting Section */
.principles-section {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-40);
  margin-top: var(--spacing-40);
}

.principle-item {
  min-width: 0;
}

.principle-num {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: var(--spacing-16);
  display: block;
}

/* Sub-page Article Layout */
.page-header {
  padding-block: var(--spacing-64) var(--spacing-40);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

.article-content {
  max-width: 760px;
  margin-inline: auto;
  padding-block: var(--spacing-64);
}

.article-content h2 {
  margin-top: var(--spacing-40);
  margin-bottom: var(--spacing-16);
}

.article-content h3 {
  margin-top: var(--spacing-24);
  margin-bottom: var(--spacing-12);
}

.article-content p {
  margin-bottom: var(--spacing-24);
  line-height: 1.7;
}

.article-content ul, 
.article-content ol {
  margin-bottom: var(--spacing-24);
  padding-left: var(--spacing-24);
}

.article-content li {
  margin-bottom: var(--spacing-8);
  line-height: 1.6;
}

.quote-box {
  margin-block: var(--spacing-40);
  padding: var(--spacing-24);
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-border-dark);
}

.quote-box p {
  font-style: italic;
  font-size: 1.15rem;
  margin-bottom: var(--spacing-8);
}

.quote-box cite {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-muted);
  display: block;
}

/* Tables */
.table-wrapper {
  overflow-x: auto;
  margin-block: var(--spacing-40);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

th, td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-surface-dim);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--color-text);
}

tr:last-child td {
  border-bottom: none;
}

/* Contact & Forms */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-40);
  align-items: start;
}

.contact-card {
  min-width: 0;
}

.form-group {
  margin-bottom: var(--spacing-24);
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--spacing-8);
  color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border-dark);
  background-color: var(--color-surface);
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text);
  border-radius: 0;
}

.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid {
  border-color: var(--color-danger);
  background-color: #fff8f8;
}

.form-error {
  display: none;
  font-size: 0.8rem;
  color: var(--color-danger);
  margin-top: var(--spacing-4);
}

.form-error.is-visible {
  display: block;
}

.form-success-banner {
  display: none;
  padding: var(--spacing-16);
  background-color: #f0f7f1;
  border: 1px solid #3c763d;
  color: #2b542c;
  margin-bottom: var(--spacing-24);
}

.form-success-banner.is-visible {
  display: block;
}

.btn-submit {
  width: 100%;
  padding: 14px 24px;
  background-color: var(--color-text);
  color: var(--color-white);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--color-text);
  cursor: pointer;
  transition: background-color var(--transition-speed), color var(--transition-speed);
}

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

.map-placeholder {
  width: 100%;
  height: 240px;
  background-color: var(--color-surface-dim);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-8);
  padding: var(--spacing-16);
  text-align: center;
  margin-top: var(--spacing-24);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  border-top: 2px solid var(--color-border-dark);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
  padding: var(--spacing-24);
  z-index: 999;
  display: none;
}

.cookie-banner.is-visible {
  display: block;
}

.cookie-banner-inner {
  max-width: var(--max-width);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-24);
  flex-wrap: wrap;
}

.cookie-text {
  font-size: 0.88rem;
  color: var(--color-muted);
  max-width: 700px;
}

.cookie-buttons {
  display: flex;
  gap: var(--spacing-8);
  flex-wrap: wrap;
}

.btn-cookie {
  padding: 10px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--color-border-dark);
  cursor: pointer;
  background-color: transparent;
  color: var(--color-text);
  transition: all var(--transition-speed);
}

.btn-cookie[data-cookie-choice="accept"] {
  background-color: var(--color-text);
  color: var(--color-white);
}

.btn-cookie[data-cookie-choice="accept"]:hover {
  background-color: transparent;
  color: var(--color-text);
}

.btn-cookie[data-cookie-choice="reject"]:hover,
.btn-cookie[data-cookie-choice="preferences"]:hover {
  background-color: var(--color-surface-dim);
}

/* Footer */
.site-footer {
  margin-top: auto;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: var(--spacing-64) var(--spacing-40);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-40);
  margin-bottom: var(--spacing-64);
}

.footer-brand {
  min-width: 0;
}

.footer-brand p {
  color: var(--color-muted);
  margin-top: var(--spacing-16);
  font-size: 0.9rem;
  max-width: 420px;
}

.footer-col-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: var(--spacing-16);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-8);
}

.footer-links a {
  text-decoration: none;
  font-size: 0.9rem;
  color: var(--color-muted);
  transition: color var(--transition-speed);
}

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

.footer-legal-bar {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-24);
  font-size: 0.82rem;
  color: var(--color-muted);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
}

/* Media Queries */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .principles-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-24);
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-24);
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 52px;
  }
  
  .mobile-nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 52px;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 2px solid var(--color-border-dark);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-24);
    gap: var(--spacing-16);
    display: none;
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    z-index: 100;
  }

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

  .header-cta {
    display: none;
  }

  /* Reduce offset to 0 below 768px per responsive guidelines */
  .framed-canvas::before {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }

  .framed-canvas:hover {
    transform: none;
  }

  .framed-canvas:hover::before {
    transform: none;
  }
}

@media (max-width: 400px) {
  .container {
    padding-inline: var(--spacing-16);
  }
  .cards-grid {
    grid-template-columns: 1fr;
  }
  .btn-cookie {
    width: 100%;
    text-align: center;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}