/*
  TYPOGRAPHY & LAYOUT SYSTEM
  Inspired by Loup Brun's clean aesthetic
  Focus: tight spacing, readable measure, minimal chrome
*/

/* ============================================================================
   CUSTOM FONTS - GC North Sans
   ========================================================================= */

@font-face {
    font-family: 'GC North Sans';
    src: url('/fonts/gc-north-sans-extra-light.woff') format('woff');
    font-weight: 200;
    font-style: normal;
}

@font-face {
    font-family: 'GC North Sans';
    src: url('/fonts/gc-north-sans-light.woff') format('woff');
    font-weight: 300;
    font-style: normal;
}

@font-face {
    font-family: 'GC North Sans';
    src: url('/fonts/gc-north-sans-regular.woff') format('woff');
    font-weight: 400;
    font-style: normal;
}

@font-face {
    font-family: 'GC North Sans';
    src: url('/fonts/gc-north-sans-medium.woff') format('woff');
    font-weight: 500;
    font-style: normal;
}

@font-face {
    font-family: 'GC North Sans';
    src: url('/fonts/gc-north-sans-bold.woff') format('woff');
    font-weight: 700;
    font-style: normal;
}

@font-face {
    font-family: 'GC North Sans';
    src: url('/fonts/gc-north-sans-extra-bold.woff') format('woff');
    font-weight: 800;
    font-style: normal;
}

/* ============================================================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ========================================================================= */

:root {
  /* Layout */
  --measure: 34em;
  --container-width: 80rem;
  --container-gutter: 1.5rem;
  
  /* Type scale - responsive */
  --font-size-xsmall: 0.875rem;
  --font-size-small: 0.9375rem;
  --font-size-base: 1.25rem;
  --font-size-medium: 1.125rem;
  --font-size-large: 1.25rem;
  --font-size-xl: 1.75rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.3rem;
  --font-size-6xl: 4rem;
  
  --body-copy-size: 1.25rem;
  --title-font-size: var(--font-size-xl);
  
  /* Line heights */
  --line-height-none: 1;
  --line-height-tight: 0.875;
  --line-height-base: 1.12;
  --line-height-snug: 1.375;
  
  /* Letter spacing */
  --letter-spacing-tight: -0.015em;
  --letter-spacing-wider: 0.05em;
  
  /* Font weights */
  --font-weight-base: 200;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Font families */
  --font-display: 'GC North Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'GC North Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-nav: 'Urbanist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Spacing scale */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  --spacing-xxxl: 4rem;
  
  /* Fixed blue color scheme */
  --bg-color: #0074d9;
  --text-color: #f6f6f6;
  --accent-color: #ffffff;
  --muted-color: #b3d9ff;
  --border-color: rgba(246, 246, 246, 0.3);
}

/* Responsive type scaling */
@media (min-width: 36rem) {
  :root {
    --title-font-size: var(--font-size-4xl);
  }
}

@media (min-width: 48rem) {
  :root {
    --body-copy-size: 1.76rem;
    --title-font-size: var(--font-size-5xl);
    --container-gutter: 2.25rem;
  }
}

@media (min-width: 60rem) {
  :root {
    --body-copy-size: 1.65rem;
    --title-font-size: var(--font-size-6xl);
    --container-gutter: 3rem;
  }
}

/* ============================================================================
   RESET & BASE STYLES
   ========================================================================= */

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

html {
  font-size: 100%;
  line-height: var(--line-height-base);
  font-family: var(--font-body);
  color: var(--text-color);
  background: var(--bg-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.5s, color 0.3s;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  font-size: var(--body-copy-size);
  font-weight: var(--font-weight-base);
  letter-spacing: var(--letter-spacing-tight);
}

::selection {
  background-color: var(--accent-color);
  color: var(--bg-color);
}

/* ============================================================================
   LAYOUT
   ========================================================================= */

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-gutter);
}

/* Header - cleaner, tighter */
header {
  padding: var(--spacing-xl) var(--container-gutter);
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 48rem) {
  header {
    padding: var(--spacing-xxl) var(--container-gutter);
    margin-bottom: var(--spacing-xl);
  }
}

.header {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  align-items: baseline;
  gap: var(--spacing-md);
}

@media (min-width: 48rem) {
  .header {
    grid-template-columns: 1fr auto 1fr;
    grid-template-rows: 1fr;
    gap: var(--spacing-lg);
  }
}

/* Hero headline */
.hero-headline {
  grid-column: 1;
  grid-row: 1;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.03em;
  color: var(--accent-color);
}

/* Navigation */
.nav {
  grid-column: 1 / span 2;
  grid-row: 2;
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  font-size: var(--font-size-medium);
}

@media (min-width: 48rem) {
  .nav {
    grid-column: 2;
    grid-row: 1;
    justify-content: center;
  }
}

.nav a {
  font-family: var(--font-nav);
  font-weight: 500;
  color: var(--muted-color);
  text-decoration: none;
  padding: var(--spacing-xs) 0;
  transition: color 0.2s ease;
}

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

/* Main content area */
main {
  padding: var(--spacing-sm) var(--container-gutter) var(--spacing-xxxl);
}

@media (min-width: 60rem) {
  main {
    padding-bottom: calc(var(--spacing-xxxl) * 1.5);
  }
}

/* ============================================================================
   TYPOGRAPHY
   ========================================================================= */

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--title-font-size);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xl);
}

h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-top: 0.75em;
  margin-bottom: 0.75em;
  display: inline-block;
}

@media (min-width: 60rem) {
  h2 {
    font-size: var(--font-size-4xl);
  }
}

h3 {
  font-size: var(--font-size-large);
  font-weight: var(--font-weight-medium);
  margin-top: 0.75em;
  margin-bottom: 0.75em;
  display: inline-block;
}

h4 {
  font-size: var(--font-size-medium);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-md);
}

/* Paragraphs */
p {
  margin-bottom: var(--body-copy-size);
  max-width: var(--measure);
}

p:last-child {
  margin-bottom: 0;
}

/* Links */
a {
  color: var(--accent-color);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: all 0.2s ease;
}

a:hover {
  text-decoration: none;
}

/* Lists */
ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

li {
  margin-bottom: var(--spacing-xs);
}

/* ============================================================================
   SECTIONS
   ========================================================================= */

section {
  margin-bottom: var(--spacing-xxxl);
}

@media (min-width: 60rem) {
  section {
    margin-bottom: calc(var(--spacing-xxxl) * 1.5);
  }
}

section:last-child {
  margin-bottom: 0;
}

/* Intro / POV Statement */
.intro, .pov-statement {
  max-width: var(--measure);
  hyphens: auto;
}

.pov-statement p {
  margin-bottom: var(--spacing-lg);
}

/* ============================================================================
   SIDEQUESTS / CARDS
   ========================================================================= */

.sidequests {
  margin-top: var(--spacing-xxxl);
}

.sidequests h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  display: block;
}

.sidequests-grid {
  display: grid;
  gap: var(--spacing-xl);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .sidequests-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xxl);
  }
}

@media (min-width: 60rem) {
  .sidequests-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.sidequest-card {
  padding: var(--spacing-lg);
  border: 1px solid var(--border-color);
  border-radius: 0;
}

.sidequest-card h3 {
  font-size: var(--font-size-medium);
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-medium);
}

/* Media embeds */
.media-embed-card {
  border: 1px solid var(--border-color);
}

.embed-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  overflow: hidden;
}

.embed-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.embed-wrapper.spotify {
  padding-bottom: 152px;
}

.media-link-card {
  display: block;
  padding: var(--spacing-lg);
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.media-link-card:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.link-card-type {
  font-size: var(--font-size-xsmall);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--muted-color);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.link-card-content h4 {
  font-size: var(--font-size-medium);
  color: var(--accent-color);
  margin: 0;
}

/* Reading/Events lists */
.reading-item, .event-item {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--muted-color);
}

.reading-item:last-child,
.event-item:last-child {
  border-bottom: none;
}

.reading-item p {
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-small);
}

.event-item a {
  font-weight: var(--font-weight-medium);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.event-date {
  font-size: var(--font-size-xsmall);
  color: var(--muted-color);
  display: block;
}

.event-title-text {
  font-weight: var(--font-weight-medium);
  display: block;
  margin-bottom: var(--spacing-xs);
}

/* Blog feed */
#blog-feed {
  list-style: none;
}

#blog-feed li {
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--muted-color);
}

#blog-feed li:last-child {
  border-bottom: none;
}

#blog-feed a {
  font-size: var(--font-size-small);
}

/* Last.fm widget */
.lastfm-widget {
  width: 100%;
  height: auto;
  margin-top: var(--spacing-sm);
  border-radius: 0;
}

/* ============================================================================
   SOCIAL / CONTACT
   ========================================================================= */

.contact {
  margin-top: var(--spacing-xxxl);
}

.social-list {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  list-style: none;
}

.social-list a {
  font-size: var(--font-size-xl);
  color: var(--muted-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

.social-list a:hover {
  color: var(--accent-color);
}

/* ============================================================================
   FOOTER
   ========================================================================= */

.site-footer {
  padding: var(--spacing-xxl) var(--container-gutter);
  border-top: 1px solid var(--border-color);
  font-size: var(--font-size-xsmall);
  color: var(--muted-color);
  margin-top: var(--spacing-xxxl);
}

.footer-badges {
  margin: var(--spacing-md) 0;
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.colophon {
  margin-top: var(--spacing-md);
  font-style: italic;
}

/* ============================================================================
   COLOR SCHEME SELECTOR - REMOVED
   Color selector UI has been removed in favor of a fixed blue color scheme
   ========================================================================= */

/* Commented out - no longer needed
.color-schemes {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-xs);
  background: rgba(0, 0, 0, 0.1);
  padding: var(--spacing-xs);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  z-index: 1000;
}

.scheme-btn {
  width: 20px;
  height: 20px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s ease;
  font-size: 16px;
}

.scheme-btn:hover {
  transform: scale(1.2);
}

.scheme-btn[data-scheme="off-white"] { background: #f5f5f0; }
.scheme-btn[data-scheme="pink-dark"] { background: #fb74a9; }
.scheme-btn[data-scheme="navy-yellow"] { background: #facc15; }
.scheme-btn[data-scheme="purple-cream"] { background: #fefce4; }
.scheme-btn[data-scheme="brown-burgundy"] { background: #e0cb57; }
.scheme-btn[data-scheme="teal-purple"] { background: #c3a8f5; }
*/

/* ============================================================================
   RESPONSIVE ADJUSTMENTS
   ========================================================================= */

@media (max-width: 768px) {
  body {
    font-size: 1.125rem;
  }
  
  .container {
    max-width: 100%;
  }
  
  header {
    margin-bottom: var(--spacing-xl);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  section {
    margin-bottom: var(--spacing-xl);
  }
  
  .sidequests-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .social-list {
    gap: var(--spacing-md);
  }
  
  .color-schemes {
    position: static;
    margin: var(--spacing-lg) auto;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .nav {
    gap: var(--spacing-md);
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
}

/* ============================================================================
   CONTENT STYLES (for blog posts / journal notes)
   Based on Loup Brun's approach to long-form content with footnotes
   ========================================================================= */

.content {
  hyphens: auto;
  max-width: var(--measure);
  letter-spacing: var(--letter-spacing-tight);
}

/* Margin for common block elements */
.content p,
.content blockquote,
.content figure,
.content aside,
.content > img {
  margin-bottom: var(--body-copy-size);
}

.content details {
  margin-top: calc(var(--body-copy-size) * 1.5);
  margin-bottom: calc(var(--body-copy-size) * 1.5);
}

.content mark {
  background-color: transparent;
  background-image: linear-gradient(to left, var(--accent-color), var(--accent-color));
  background-size: 100% 0.6em;
  background-repeat: no-repeat;
  background-position: 0 88%;
  color: var(--text-color);
}

@media (prefers-color-scheme: dark) {
  .content mark {
    background-size: 100% 0.88em;
  }
}

.content b,
.content strong {
  font-weight: var(--font-weight-bold);
}

.content em {
  font-style: italic;
}

.content del {
  opacity: 0.7;
}

.content ins {
  text-decoration: underline;
  background-color: transparent;
  background-image: linear-gradient(to left, var(--accent-color), var(--accent-color));
  background-size: 100% 0.3em;
  background-repeat: no-repeat;
  background-position: 0 94%;
}

@media (prefers-color-scheme: dark) {
  .content ins {
    background-size: 100% 0.18em;
  }
}

.content dt {
  font-weight: var(--font-weight-bold);
}

.content dd {
  margin-bottom: 1rem;
}

.content h2,
.content h3,
.content h4,
.content h5,
.content h6 {
  display: inline-block;
  line-height: var(--line-height-tight);
  margin-top: 0.75em;
  margin-bottom: 0.75em;
  padding-bottom: 0.15em;
  font-weight: var(--font-weight-medium);
}

.content h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  display: inline-block;
}

@media (min-width: 60rem) {
  .content h2 {
    font-size: var(--font-size-4xl);
  }
}

.content h3 {
  font-size: var(--font-size-large);
  font-weight: var(--font-weight-medium);
}

.content a {
  color: var(--accent-color);
  text-decoration: underline;
}

.content a:hover {
  text-decoration: none;
}

/* Footnote references in text */
.content a.footnote-ref {
  text-decoration: none;
}

.content a.footnote-ref:hover {
  text-decoration: underline;
}

.content abbr {
  cursor: help;
}

.content sup {
  font-size: 0.85em;
  vertical-align: baseline;
  top: -0.25em;
  margin-left: 0.08em;
  position: relative;
  line-height: 0.8;
}

/* Footnote references specifically */
.content sup[id*="fnref:"] {
  margin-left: 0.12em;
  font-size: 0.65em;
  font-weight: var(--font-weight-medium);
  top: -0.35em;
}

.content ol {
  list-style-position: outside;
  list-style-type: decimal;
  margin-left: 1.35em;
  margin-bottom: 1em;
}

.content ul {
  margin-bottom: 1em;
  padding-left: 1.35em;
  position: relative;
}

.content ul li::before {
  left: 0.15rem;
  position: absolute;
  content: '–';
  margin-right: 0.5rem;
}

.content table {
  margin-bottom: 1.5em;
  font-size: 0.75em;
  width: 100%;
}

.content th {
  border-bottom: 3px solid currentColor;
}

.content td,
.content th {
  padding: 0.5rem;
  text-align: left;
}

@media (min-width: 60rem) {
  .content td,
  .content th {
    padding: 0.75rem 0;
  }
}

.content blockquote {
  padding-left: 1em;
  margin-left: 0;
  border-left: 2px solid var(--accent-color);
  color: var(--muted-color);
}

@media (min-width: 60rem) {
  .content blockquote {
    padding-left: 1.25em;
  }
}

.content blockquote footer::before {
  content: '(';
}

.content blockquote footer::after {
  content: ')';
}

.content hr {
  margin-top: 2em;
  margin-bottom: 2em;
  color: inherit;
  border-top: 1px solid currentColor;
}

.content code {
  font-family: 'SFMono-Regular', 'Menlo', monospace;
  font-size: 0.9em;
  background: rgba(0, 0, 0, 0.05);
  padding: 2px 6px;
  border-radius: 3px;
}

@media (prefers-color-scheme: dark) {
  .content code {
    background: rgba(255, 255, 255, 0.05);
  }
}

.content pre {
  background: rgba(0, 0, 0, 0.05);
  padding: var(--spacing-md);
  border-radius: 4px;
  overflow-x: auto;
  margin-bottom: var(--spacing-lg);
}

@media (prefers-color-scheme: dark) {
  .content pre {
    background: rgba(255, 255, 255, 0.05);
  }
}

.content pre code {
  background: none;
  padding: 0;
}

/* Details - summary block (expandable) */
.content details {
  border: 1px solid var(--muted-color);
  border-radius: 0.5rem;
  font-size: var(--font-size-medium);
}

.content details > :not(summary) {
  margin-left: 0.75rem;
  margin-right: 0.75rem;
}

.content details > :last-child {
  margin-bottom: 0.75rem;
}

.content details[open] summary {
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--muted-color);
}

.content details[open] > :not(summary) {
  opacity: 0;
  animation-name: detailsFadeIn;
  animation-duration: 0.3s;
  animation-delay: 0.15s;
  animation-timing-function: ease-out;
  animation-fill-mode: forwards;
}

.content summary {
  font-weight: var(--font-weight-medium);
  padding: 0.75rem;
  cursor: pointer;
  user-select: none;
}

.content aside {
  font-size: var(--font-size-4xl);
  line-height: var(--line-height-base);
  max-width: 42rem;
  width: 92%;
}

@media (min-width: 48rem) {
  .content aside {
    font-size: var(--font-size-5xl);
  }
}

@keyframes detailsFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ============================================================================
   FOOTNOTES SECTION
   ========================================================================= */

.footnotes {
  margin-top: 3rem;
  color: var(--muted-color);
  font-size: var(--font-size-small);
}

.footnotes hr {
  border-top: 1px solid var(--border-color);
  max-width: 10rem;
  margin-bottom: 1.5rem;
}

.footnotes ol {
  list-style-type: decimal;
  list-style-position: inside;
  padding: 0;
  margin-left: 0;
  margin-right: 0;
}

.footnotes ol li {
  margin-bottom: 0.75rem;
}

.footnotes ol p {
  display: inline;
}

/* ============================================================================
   ARTICLE / NOTE PAGE STRUCTURE
   ========================================================================= */

.note {
  max-width: var(--measure);
  margin: 0 auto;
}

.note-header {
  margin-bottom: var(--spacing-xxl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.note-meta {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-small);
}

.note-number {
  font-family: var(--font-display);
  font-weight: var(--font-weight-medium);
  color: var(--accent-color);
}

.note-date {
  color: var(--muted-color);
}

.note-title {
  font-size: var(--title-font-size);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
  display: block;
}

.note-tags {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-top: var(--spacing-md);
}

.tag {
  color: var(--accent-color);
  text-decoration: none;
  font-size: var(--font-size-xsmall);
  padding: 2px 6px;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.05);
  transition: background-color 0.2s ease;
}

@media (prefers-color-scheme: dark) {
  .tag {
    background: rgba(255, 255, 255, 0.05);
  }
}

.tag:hover {
  background: rgba(0, 0, 0, 0.1);
  text-decoration: none;
}

@media (prefers-color-scheme: dark) {
  .tag:hover {
    background: rgba(255, 255, 255, 0.1);
  }
}

.note-content {
  margin-bottom: var(--spacing-xxxl);
}

.note-footer {
  margin-top: var(--spacing-xxxl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
}

.back-to-notes {
  font-size: var(--font-size-medium);
  color: var(--accent-color);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}

.back-to-notes:hover {
  text-decoration: underline;
}

/* ============================================================================
   PAGE-SPECIFIC STYLES
   ========================================================================= */

/* Photo headers for speaking/tennis pages */
.photo-header {
  position: relative;
  width: 100%;
  height: 300px;
  margin-bottom: var(--spacing-xxl);
  overflow: hidden;
  border-radius: 0;
}

@media (min-width: 48rem) {
  .photo-header {
    height: 400px;
  }
}

.photo-header img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-header-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-xl);
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
}

.photo-header-overlay h1 {
  color: white;
  margin: 0;
  font-size: var(--font-size-4xl);
}

/* Section styling */
.section {
  margin-bottom: var(--spacing-xxxl);
  max-width: var(--measure);
}

.section:last-child {
  margin-bottom: 0;
}

.section h3 {
  margin-bottom: var(--spacing-lg);
}

.section ul {
  list-style: none;
  padding-left: 0;
}

.section ul li {
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
}

.section ul li:last-child {
  border-bottom: none;
}

/* Media sections */
.media-section {
  margin-bottom: var(--spacing-xxxl);
}

.media-grid {
  display: grid;
  gap: var(--spacing-md);
}

.media-item {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-color);
}

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

.media-item a {
  font-weight: var(--font-weight-medium);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.media-source {
  font-size: var(--font-size-xsmall);
  color: var(--muted-color);
  font-style: italic;
  display: block;
}

.media-title {
  font-weight: var(--font-weight-medium);
  display: block;
  margin-bottom: var(--spacing-xs);
}

/* Featured media grid */
.featured-media {
  margin-bottom: var(--spacing-xxxl);
}

.media-embed-grid {
  display: grid;
  gap: var(--spacing-xl);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .media-embed-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 60rem) {
  .media-embed-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.embed-info {
  padding: var(--spacing-md) 0;
}

.embed-info h4 {
  font-size: var(--font-size-medium);
  margin-bottom: var(--spacing-xs);
}

.embed-info p {
  font-size: var(--font-size-small);
  color: var(--muted-color);
  margin: 0;
}

/* Talks grid */
.talks-grid {
  display: grid;
  gap: var(--spacing-md);
}

.talk-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-color);
}

@media (min-width: 48rem) {
  .talk-item {
    grid-template-columns: 80px 1fr auto;
    gap: var(--spacing-md);
    align-items: start;
  }
}

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

.talk-date {
  font-family: var(--font-display);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--accent-color);
}

.talk-title {
  font-size: var(--font-size-small);
  line-height: var(--line-height-snug);
  color: var(--text-color);
}

.talk-venue {
  font-size: var(--font-size-xsmall);
  color: var(--muted-color);
  font-style: italic;
}

@media (min-width: 48rem) {
  .talk-venue {
    text-align: right;
  }
}

/* Photo layouts for tennis page */
.photo-aside {
  float: right;
  margin: 0 0 var(--spacing-md) var(--spacing-lg);
  max-width: 300px;
  width: 100%;
  border-radius: 0;
}

@media (max-width: 768px) {
  .photo-aside {
    float: none;
    margin: var(--spacing-md) 0;
    max-width: 100%;
  }
}

.clearfix::after {
  content: "";
  display: table;
  clear: both;
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

@media (min-width: 48rem) {
  .photo-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.photo-grid img {
  width: 100%;
  height: auto;
  border-radius: 0;
}

.photo-block {
  margin: var(--spacing-xl) 0;
}

.photo-block img {
  width: 100%;
  height: auto;
  margin-bottom: var(--spacing-md);
  border-radius: 0;
}

.photo-caption {
  font-size: var(--font-size-small);
  color: var(--muted-color);
  font-style: italic;
}

.thumbnail-gallery {
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  padding: var(--spacing-md) 0;
  -webkit-overflow-scrolling: touch;
}

.thumbnail-gallery img {
  flex-shrink: 0;
  width: 200px;
  height: 100px;
  object-fit: cover;
  border-radius: 0;
}

/* Books page */
.books-intro {
  max-width: var(--measure);
  margin-bottom: var(--spacing-xxxl);
}

.books-section {
  margin-bottom: var(--spacing-xxxl);
}

.books-section h2 {
  margin-bottom: var(--spacing-lg);
}

.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 48rem) {
  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  }
}

.book-card {
  display: flex;
  flex-direction: column;
}

.book-cover-wrapper {
  aspect-ratio: 2/3;
  margin-bottom: var(--spacing-sm);
  background: var(--muted-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.book-cover-placeholder {
  padding: var(--spacing-md);
  text-align: center;
  font-size: var(--font-size-xsmall);
  color: var(--bg-color);
  font-weight: var(--font-weight-medium);
}

.book-info {
  flex: 1;
}

.book-title {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xs);
  line-height: var(--line-height-snug);
}

.book-title a {
  text-decoration: none;
  color: var(--text-color);
}

.book-title a:hover {
  color: var(--accent-color);
}

.book-author {
  font-size: var(--font-size-xsmall);
  color: var(--muted-color);
  margin: 0;
}

.loading-message {
  text-align: center;
  padding: var(--spacing-xl) 0;
  color: var(--muted-color);
  font-size: var(--font-size-small);
}

/* ============================================================================
   UTILITY CLASSES
   ========================================================================= */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}