/* Post-Internet — Design System */
/* Based on Hyperstudio monochrome + amber system, adapted for Post-Internet */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700&family=IBM+Plex+Mono:wght@400&display=swap');

:root {
  /* Colors */
  --color-midnight-void: #101010;
  --color-deep-space: #080808;
  --color-polar-white: #F3F3F3;
  --color-absolute-zero: #FFFFFF;
  --color-ash-gray: #949494;
  --color-dark-carbon: #333333;
  --color-slate: #C1C1C1;
  --color-amber-glow: #E7C59A;
  --color-neon-green: #00AC5C;

  /* Fonts */
  --font-aeonik: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-input: 'IBM Plex Mono', ui-monospace, monospace;

  /* Type Scale */
  --text-caption: 13px;
  --text-subheading: 18px;
  --text-heading-sm: 21px;
  --text-heading: 23px;
  --text-heading-lg: 34px;
  --text-display: 44px;
  --text-display-lg: 63px;

  /* Spacing */
  --spacing-4: 4px;
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-20: 20px;
  --spacing-24: 24px;
  --spacing-40: 40px;

  /* Layout */
  --section-gap: 64px;
  --card-padding: 24px;
  --element-gap: 10px;
  --max-width: 800px;

  /* Radius */
  --radius-md: 4.5px;
  --radius-lg: 8px;
  --radius-full: 99px;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-aeonik);
  font-weight: 400;
  color: var(--color-polar-white);
  background: var(--color-midnight-void);
  line-height: 1.5;
}

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

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

/* ---- HEADER ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-midnight-void);
  border-bottom: 1px solid var(--color-dark-carbon);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-16) var(--spacing-24);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: var(--text-subheading);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-polar-white);
}

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

.main-nav a {
  font-size: 16px;
  font-weight: 400;
  color: var(--color-polar-white);
  transition: color 0.15s;
}

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

.chat-btn {
  background: #000;
  color: var(--color-absolute-zero) !important;
  padding: var(--spacing-8) var(--spacing-16);
  border-radius: var(--radius-lg);
  font-size: 14px !important;
}

.chat-btn:hover {
  background: var(--color-dark-carbon) !important;
  color: var(--color-absolute-zero) !important;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-polar-white);
  font-size: 24px;
  cursor: pointer;
}

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--section-gap) var(--spacing-24);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.display-lg {
  font-size: var(--text-display-lg);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.011em;
  color: var(--color-polar-white);
  margin-bottom: var(--spacing-24);
}

.hero-sub {
  font-size: var(--text-subheading);
  color: var(--color-ash-gray);
  margin-bottom: var(--spacing-40);
  max-width: 480px;
  line-height: 1.35;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-16);
  flex-wrap: wrap;
}

.hero-graphic {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 50%;
  z-index: 1;
  opacity: 0.4;
}

.dot-grid {
  width: 100%;
  height: 100%;
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-block;
  font-family: var(--font-aeonik);
  font-weight: 400;
  font-size: 16px;
  border-radius: var(--radius-lg);
  padding: var(--spacing-12) var(--spacing-24);
  cursor: pointer;
  transition: all 0.15s;
  border: none;
}

.btn-primary {
  background: transparent;
  color: var(--color-polar-white);
  border: 1px solid var(--color-polar-white);
}

.btn-primary:hover {
  background: var(--color-polar-white);
  color: var(--color-midnight-void);
}

.btn-secondary {
  background: transparent;
  color: var(--color-ash-gray);
}

.btn-secondary:hover {
  color: var(--color-polar-white);
}

.btn-ghost {
  background: transparent;
  color: var(--color-amber-glow);
  padding: var(--spacing-8) 0;
}

.btn-ghost:hover {
  text-decoration: underline;
}

.btn-manifesto {
  background: var(--color-dark-carbon);
  color: var(--color-absolute-zero);
  border-radius: var(--radius-md);
}

.btn-manifesto:hover {
  background: var(--color-ash-gray);
  color: var(--color-midnight-void);
}

/* ---- SECTIONS ---- */
.section {
  padding: var(--section-gap) var(--spacing-24);
}

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

.heading-lg {
  font-size: var(--text-heading-lg);
  font-weight: 700;
  line-height: 1.07;
  margin-bottom: var(--spacing-40);
}

.heading {
  font-size: var(--text-heading);
  font-weight: 700;
  line-height: 1.11;
  margin-bottom: var(--spacing-12);
}

/* ---- ESSAYS GRID ---- */
.essays-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-24);
}

.essay-card {
  background: var(--color-deep-space);
  padding: var(--card-padding);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: var(--element-gap);
}

.essay-card p {
  color: var(--color-ash-gray);
  font-size: 16px;
  line-height: 1.35;
  flex-grow: 1;
}

.tag {
  display: inline-block;
  font-size: var(--text-caption);
  font-weight: 400;
  color: var(--color-amber-glow);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ---- WORKS GRID ---- */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-24);
}

.work-thumb {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-deep-space);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.work-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.3s;
}

.work-thumb:hover img {
  opacity: 0.7;
}

.work-label {
  position: absolute;
  bottom: var(--spacing-16);
  left: var(--spacing-16);
  font-size: var(--text-caption);
  font-weight: 400;
  color: var(--color-polar-white);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(16,16,16,0.8);
  padding: var(--spacing-4) var(--spacing-12);
  border-radius: var(--radius-lg);
  opacity: 0;
  transition: opacity 0.3s;
}

.work-thumb:hover .work-label {
  opacity: 1;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: var(--section-gap) var(--spacing-24);
  border-top: 1px solid var(--color-dark-carbon);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-16);
}

.footer-inner p {
  color: var(--color-ash-gray);
  font-size: 16px;
}

.footer-links {
  display: flex;
  gap: var(--spacing-24);
}

.footer-links a {
  color: var(--color-ash-gray);
  font-size: 16px;
}

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

.footer-note {
  font-size: var(--text-caption) !important;
  color: var(--color-dark-carbon) !important;
}

/* ---- WORKS PAGE ---- */
.works-full-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--spacing-24);
}

.work-full-card {
  background: var(--color-deep-space);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.work-full-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.work-full-card .work-info {
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
}

.work-full-card .work-title {
  font-size: var(--text-heading);
  font-weight: 700;
}

.work-full-card .work-medium {
  font-family: var(--font-input);
  font-size: var(--text-caption);
  color: var(--color-amber-glow);
  letter-spacing: -0.037em;
}

.work-full-card .work-desc {
  font-size: 16px;
  color: var(--color-ash-gray);
  line-height: 1.35;
}

/* ---- ESSAY PAGE ---- */
.essay-body {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--section-gap) var(--spacing-24);
}

.essay-body h1 {
  font-size: var(--text-display);
  font-weight: 700;
  line-height: 1.03;
  margin-bottom: var(--spacing-24);
}

.essay-body .essay-meta {
  font-family: var(--font-input);
  font-size: var(--text-caption);
  color: var(--color-ash-gray);
  margin-bottom: var(--spacing-40);
  letter-spacing: -0.022em;
}

.essay-body .pull-quote {
  font-size: var(--text-heading-lg);
  font-weight: 700;
  line-height: 1.07;
  color: var(--color-polar-white);
  border-left: 3px solid var(--color-amber-glow);
  padding-left: var(--spacing-24);
  margin: var(--spacing-40) 0;
}

.essay-body p {
  font-size: 18px;
  line-height: 1.35;
  color: var(--color-ash-gray);
  margin-bottom: var(--spacing-24);
}

.essay-body .essay-image {
  margin: var(--spacing-40) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.essay-body .essay-image img {
  width: 100%;
}

.essay-body .essay-image figcaption {
  font-family: var(--font-input);
  font-size: var(--text-caption);
  color: var(--color-dark-carbon);
  margin-top: var(--spacing-8);
  letter-spacing: -0.022em;
}

/* ---- NOTES PAGE ---- */
.notes-list {
  max-width: 720px;
  margin: 0 auto;
}

.note-item {
  padding: var(--spacing-24) 0;
  border-bottom: 1px solid var(--color-dark-carbon);
}

.note-item .note-date {
  font-family: var(--font-input);
  font-size: var(--text-caption);
  color: var(--color-dark-carbon);
  letter-spacing: -0.022em;
  margin-bottom: var(--spacing-8);
}

.note-item .note-text {
  font-size: 16px;
  color: var(--color-ash-gray);
  line-height: 1.35;
}

/* ---- SHOP PAGE ---- */
.shop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-24);
}

.shop-card {
  background: var(--color-deep-space);
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-12);
}

.shop-card img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.shop-card .shop-title {
  font-size: var(--text-heading);
  font-weight: 700;
}

.shop-card .shop-price {
  font-family: var(--font-input);
  font-size: var(--text-caption);
  color: var(--color-amber-glow);
  letter-spacing: -0.037em;
}

.shop-card .shop-detail {
  font-size: 14px;
  color: var(--color-ash-gray);
}

/* ---- ABOUT PAGE ---- */
.about-body {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--section-gap) var(--spacing-24);
}

.about-body h1 {
  font-size: var(--text-display);
  font-weight: 700;
  line-height: 1.03;
  margin-bottom: var(--spacing-40);
}

.about-body p {
  font-size: 18px;
  color: var(--color-ash-gray);
  line-height: 1.35;
  margin-bottom: var(--spacing-24);
}

.about-body .against {
  margin-top: var(--spacing-40);
  padding: var(--card-padding);
  background: var(--color-deep-space);
  border-radius: var(--radius-lg);
}

.about-body .against h2 {
  font-size: var(--text-heading);
  font-weight: 700;
  margin-bottom: var(--spacing-16);
}

.about-body .against ul {
  list-style: none;
  padding: 0;
}

.about-body .against li {
  font-size: 16px;
  color: var(--color-ash-gray);
  padding: var(--spacing-8) 0;
  border-bottom: 1px solid var(--color-dark-carbon);
}

.about-body .against li::before {
  content: '—';
  color: var(--color-amber-glow);
  margin-right: var(--spacing-12);
}

/* ---- CONTACT PAGE ---- */
.contact-body {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--section-gap) var(--spacing-24);
}

.contact-body h1 {
  font-size: var(--text-display);
  font-weight: 700;
  line-height: 1.03;
  margin-bottom: var(--spacing-40);
}

.contact-body p {
  font-size: 18px;
  color: var(--color-ash-gray);
  line-height: 1.35;
  margin-bottom: var(--spacing-24);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-16);
}

.contact-form input,
.contact-form textarea {
  background: var(--color-deep-space);
  border: 1px solid var(--color-dark-carbon);
  border-radius: var(--radius-lg);
  color: var(--color-polar-white);
  font-family: var(--font-aeonik);
  font-size: 16px;
  padding: var(--spacing-16);
  outline: none;
  transition: border-color 0.15s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--color-amber-glow);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .display-lg {
    font-size: 36px;
  }

  .hero {
    min-height: 80vh;
  }

  .hero-graphic {
    display: none;
  }

  .main-nav {
    display: none;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-midnight-void);
    padding: var(--spacing-24);
    border-bottom: 1px solid var(--color-dark-carbon);
    gap: var(--spacing-16);
  }

  .mobile-toggle {
    display: block;
  }

  .essays-grid,
  .works-full-grid,
  .shop-grid {
    grid-template-columns: 1fr;
  }
}