@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;900&family=JetBrains+Mono:wght@400;700&display=swap');

:root {
  --black: #000000;
  --white: #ffffff;
  --off-white: #f4f4f0;
  --red: #e53935;
  --yellow: #ffeb3b;
  --blue: #1e88e5;
  --gray: #888888;
  --light-gray: #dddddd;

  --font-sans: 'Inter', Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --border-thick: 4px solid var(--black);
  --border-thin: 1px solid var(--black);
}

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

body {
  background-color: var(--off-white);
  color: var(--black);
  font-family: var(--font-sans);
  line-height: 1.4;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* AI Banner */
.ai-banner-grid {
  background: var(--red);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  border-bottom: var(--border-thick);
  position: sticky;
  top: 0;
  z-index: 100;
}

.ai-banner-grid a {
  color: var(--white);
  text-decoration: none;
  font-weight: bold;
}

.ai-banner-grid a:hover {
  text-decoration: underline;
}

/* Layout */
.swiss-grid-container {
  max-width: 1400px;
  margin: 0 auto;
  border-left: var(--border-thick);
  border-right: var(--border-thick);
  min-height: 100vh;
  background: var(--white);
}

/* Header */
.swiss-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: var(--border-thick);
}

.header-logo-block {
  padding: 40px;
  border-right: var(--border-thick);
  background: var(--yellow);
}

.logo-title {
  font-size: 4rem;
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -2px;
  margin-bottom: 20px;
}

.logo-subtitle {
  font-family: var(--font-mono);
  font-size: 1rem;
  text-transform: uppercase;
  font-weight: 700;
}

.swiss-nav {
  display: flex;
  flex-direction: column;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 20px 40px;
  border-bottom: var(--border-thin);
  text-decoration: none;
  color: var(--black);
  transition: background-color 0.2s, color 0.2s;
}

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

.nav-item:hover {
  background-color: var(--black);
  color: var(--white);
}

.nav-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  margin-right: 30px;
  color: var(--gray);
}
.nav-item:hover .nav-num {
  color: var(--white);
}

.nav-text {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -1px;
}

/* Main Content */
.swiss-content {
  /* No padding here, let sections handle it */
}

/* Typography */
h1 {
  font-size: 5rem;
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -3px;
  margin-bottom: 20px;
  text-transform: uppercase;
}
h2 {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -1px;
  text-transform: uppercase;
}
h3 {
  font-size: 2rem;
  font-weight: 900;
}

p {
  margin-bottom: 1.5em;
  font-size: 1.1rem;
}

a {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}
a:hover {
  color: var(--red);
}

/* Home Grid Sections */
.grid-section {
  border-bottom: var(--border-thick);
}

.section-heading {
  padding: 20px 40px;
  background: var(--black);
  color: var(--white);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.heading-meta {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* Apps */
.apps-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.app-block {
  position: relative;
  display: block;
  height: 400px;
  border-right: var(--border-thick);
  text-decoration: none;
  color: var(--black);
  overflow: hidden;
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: transform 0.3s;
}

.app-block:last-child {
  border-right: none;
}

.bg-red { background: var(--red); color: var(--white); }
.bg-yellow { background: var(--yellow); }
.bg-blue { background: var(--blue); color: var(--white); }

.app-block:hover {
  transform: scale(0.98);
}

.app-bg-num {
  position: absolute;
  top: -20px;
  right: -20px;
  font-size: 15rem;
  font-weight: 900;
  line-height: 1;
  opacity: 0.2;
  letter-spacing: -10px;
}

.app-info h3 {
  margin-bottom: 10px;
}
.app-info p {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin: 0;
}

/* Writing Table */
.writing-table {
  width: 100%;
}

.writing-header {
  display: grid;
  grid-template-columns: 150px 1fr 100px;
  border-bottom: var(--border-thick);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: bold;
  background: var(--light-gray);
}

.w-col {
  padding: 20px 40px;
  border-right: var(--border-thin);
}
.w-col:last-child {
  border-right: none;
}

.writing-row {
  display: grid;
  grid-template-columns: 150px 1fr 100px;
  border-bottom: var(--border-thin);
  text-decoration: none;
  color: var(--black);
  transition: background-color 0.2s;
}

.writing-row:hover {
  background: var(--black);
  color: var(--white);
}

.w-date {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}
.w-title {
  font-weight: 900;
  font-size: 1.2rem;
}
.w-action {
  font-family: var(--font-mono);
  font-weight: bold;
  text-align: right;
}

/* Button */
.btn-primary {
  display: block;
  text-align: center;
  padding: 20px;
  background: var(--black);
  color: var(--white);
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: bold;
  text-transform: uppercase;
  transition: background-color 0.2s;
}
.btn-primary:hover {
  background: var(--blue);
}

/* Reading Index */
.reading-index {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--light-gray);
  gap: 4px; /* Border thickness essentially */
  padding: 4px;
}

.index-card {
  background: var(--white);
  padding: 40px;
  text-decoration: none;
  color: var(--black);
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s;
}
.index-card:hover {
  background: var(--yellow);
}

.card-status {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: bold;
  margin-bottom: 40px;
  border-bottom: 2px solid var(--black);
  padding-bottom: 10px;
  display: inline-block;
}

.card-title {
  font-weight: 900;
  font-size: 1.5rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.card-author {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* Pages Layouts */
.page-container {
  padding: 60px 40px;
  max-width: 900px;
}

.page-header {
  margin-bottom: 60px;
  padding-bottom: 40px;
  border-bottom: var(--border-thick);
}

.page-meta {
  font-family: var(--font-mono);
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 20px;
  font-weight: bold;
}

.meta-tag {
  background: var(--black);
  color: var(--white);
  padding: 5px 10px;
  font-size: 0.8rem;
}

.page-content {
  font-size: 1.2rem;
  line-height: 1.6;
}

.page-content p {
  margin-bottom: 1.5em;
}

.page-content h2, .page-content h3 {
  margin-top: 2em;
  margin-bottom: 1em;
}

.page-content blockquote {
  border-left: var(--border-thick);
  padding-left: 20px;
  font-style: italic;
  font-size: 1.4rem;
  margin: 2em 0;
  font-weight: 600;
}

.page-content img {
  max-width: 100%;
  height: auto;
  border: var(--border-thick);
  display: block;
  margin: 2em 0;
}

.page-content pre {
  background: var(--black);
  color: var(--white);
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  overflow-x: auto;
  margin: 2em 0;
  border-left: 10px solid var(--red);
}

.page-content code {
  font-family: var(--font-mono);
  background: var(--light-gray);
  padding: 2px 5px;
}
.page-content pre code {
  background: transparent;
  padding: 0;
}

/* App Download */
.app-download-btn {
  display: inline-block;
  background: var(--blue);
  color: var(--white);
  font-family: var(--font-mono);
  font-weight: bold;
  font-size: 1.2rem;
  padding: 20px 40px;
  text-decoration: none;
  text-transform: uppercase;
  margin: 40px 0;
  border: var(--border-thick);
  transition: transform 0.1s, box-shadow 0.1s;
  box-shadow: 8px 8px 0 var(--black);
}
.app-download-btn:hover {
  transform: translate(2px, 2px);
  box-shadow: 6px 6px 0 var(--black);
  color: var(--white);
}
.app-download-btn:active {
  transform: translate(8px, 8px);
  box-shadow: 0 0 0 var(--black);
}

/* Takeaway Box */
.takeaway-block {
  border: var(--border-thick);
  padding: 40px;
  margin: 40px 0;
  background: var(--yellow);
  font-weight: 600;
  font-size: 1.3rem;
  position: relative;
}
.takeaway-label {
  position: absolute;
  top: -15px;
  left: 20px;
  background: var(--black);
  color: var(--white);
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: bold;
}

/* Footer */
.swiss-footer {
  border-top: var(--border-thick);
  background: var(--black);
  color: var(--white);
  padding: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.footer-col strong {
  display: block;
  margin-bottom: 20px;
  color: var(--gray);
}

.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.footer-links a:hover {
  border-color: var(--white);
}

/* Book Item Component (for /reading page) */
.tome-item-swiss {
  display: block;
  border: var(--border-thick);
  padding: 20px;
  text-decoration: none;
  color: var(--black);
  background: var(--white);
  transition: background-color 0.2s, transform 0.2s;
  margin-bottom: -4px; /* overlap borders */
}
.tome-item-swiss:hover {
  background: var(--yellow);
  transform: translateX(10px);
  z-index: 10;
  position: relative;
}

.tome-title-s {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 10px;
}
.tome-meta-s {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
}
.tome-rating-s {
  font-weight: bold;
}

/* Archive List */
.archive-list {
  display: grid;
  gap: 20px;
  margin-top: 40px;
}
.archive-item {
  border: var(--border-thick);
  padding: 20px;
  text-decoration: none;
  color: var(--black);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s;
}
.archive-item:hover {
  background: var(--black);
  color: var(--white);
}
.archive-date {
  font-family: var(--font-mono);
  font-weight: bold;
}
.archive-theme {
  font-size: 1.5rem;
  font-weight: 900;
}

/* Mobile */
@media (max-width: 900px) {
  .swiss-header { grid-template-columns: 1fr; }
  .header-logo-block { border-right: none; border-bottom: var(--border-thick); }
  .apps-container { grid-template-columns: 1fr; }
  .app-block { border-right: none; border-bottom: var(--border-thick); height: 300px; }
  .app-block:last-child { border-bottom: none; }
  
  .writing-header { display: none; }
  .writing-row { grid-template-columns: 1fr; padding: 20px; border-bottom: var(--border-thick); }
  .w-col { padding: 5px 0; border: none; }
  .w-date { margin-bottom: 10px; color: var(--gray); }
  .w-action { text-align: left; margin-top: 10px; }
  
  .reading-index { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; text-align: left !important; }
  .footer-col { text-align: left !important; }
}