/* ============================================
   Michael Cutajar — Personal Site
   Editorial Minimalism
   ============================================ */

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

:root {
  --bg: #f9f8f6;
  --bg-alt: #f1f0ec;
  --text: #1a1a1a;
  --text-secondary: #5a5a5a;
  --accent: #047857;
  --accent-hover: #065f46;
  --max-width: 1200px;
  --reading-width: 700px;
  --nav-height: 72px;
  --font-serif: 'Newsreader', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

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

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
}

h3 {
  font-size: clamp(1.3rem, 2vw, 1.6rem);
}

p {
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(249, 248, 246, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

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

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: all 0.3s ease;
}

/* --- Sections --- */
section {
  padding: 6rem 2rem;
}

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

.container--narrow {
  max-width: var(--reading-width);
  margin: 0 auto;
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
}

.hero-content {
  max-width: 800px;
}

.hero h1 {
  margin-bottom: 1.5rem;
  font-style: italic;
}

.hero-sub {
  font-size: clamp(1.1rem, 1.8vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 650px;
  margin-bottom: 2.5rem;
}

.hero-ctas {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  padding: 0.85rem 2rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

.btn-secondary svg {
  width: 18px;
  height: 18px;
}

/* --- Thesis Section --- */
.thesis {
  background: var(--bg-alt);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.thesis h2 {
  margin-bottom: 2.5rem;
}

.thesis-body p {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 1.6vw, 1.2rem);
  color: var(--text);
  line-height: 1.9;
}

.thesis-body p:last-child {
  margin-bottom: 0;
}

.thesis-body em {
  font-style: italic;
  color: var(--accent);
}

/* --- Writing Section --- */
.writing {
  padding-bottom: 4rem;
}

.writing h2 {
  margin-bottom: 3rem;
}

.writing-list {
  list-style: none;
}

.writing-item {
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.writing-item:first-child {
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.writing-link {
  display: block;
  padding: 2rem 0;
  color: var(--text);
  transition: padding-left 0.3s ease;
}

.writing-link:hover {
  padding-left: 1rem;
  color: var(--text);
}

.writing-link:hover .writing-title {
  color: var(--accent);
}

.writing-date {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-variant-numeric: tabular-nums;
}

.writing-title {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.5vw, 1.6rem);
  font-weight: 400;
  margin-bottom: 0.5rem;
  transition: color 0.2s ease;
  letter-spacing: -0.01em;
}

.writing-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}

.writing-coming-soon {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  border: 1px solid rgba(0, 0, 0, 0.15);
  padding: 0.15rem 0.6rem;
  border-radius: 3px;
  margin-left: 0.75rem;
  vertical-align: middle;
  font-family: var(--font-sans);
  letter-spacing: 0.03em;
}

/* --- Credentials Section --- */
.credentials {
  padding-top: 4rem;
}

.credentials h2 {
  margin-bottom: 2.5rem;
}

.credentials-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.credential-item {
  font-size: 1rem;
  color: var(--text-secondary);
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.credential-item strong {
  color: var(--text);
  font-weight: 500;
}

/* --- Media / Speaking Section --- */
.media h2 {
  margin-bottom: 2.5rem;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.media-item {
  margin: 0;
}

.media-item img,
.media-item iframe {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 4px;
  display: block;
  background: var(--bg-alt);
}

.media-item iframe {
  border: none;
}

.media-placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--bg-alt);
  border: 2px dashed rgba(0, 0, 0, 0.1);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.media-placeholder::after {
  content: attr(data-label);
  font-size: 0.85rem;
  color: var(--text-secondary);
  opacity: 0.5;
}

.media-item figcaption {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* --- Connect Section --- */
.connect {
  padding-bottom: 8rem;
}

.connect h2 {
  margin-bottom: 2rem;
}

.connect-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.connect-links a {
  font-size: 1.05rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.connect-links a::after {
  content: '\2197';
  font-size: 0.85rem;
  opacity: 0.5;
  transition: opacity 0.2s ease;
}

.connect-links a:hover::after {
  opacity: 1;
}

/* --- Book Teaser --- */
.book-teaser {
  background: var(--bg-alt);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  padding: 4rem 2rem;
}

.book-teaser h3 {
  font-style: italic;
  margin-bottom: 1rem;
}

.book-teaser p {
  color: var(--text-secondary);
  max-width: 550px;
  margin-bottom: 1.5rem;
}

.email-form {
  display: flex;
  gap: 0.75rem;
  max-width: 440px;
  flex-wrap: wrap;
}

.email-form input[type="email"] {
  flex: 1;
  min-width: 200px;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 4px;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s ease;
}

.email-form input[type="email"]:focus {
  border-color: var(--accent);
}

.email-form button {
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background 0.2s ease;
}

.email-form button:hover {
  background: var(--accent-hover);
}

.email-form-msg {
  display: none;
  width: 100%;
  font-size: 0.9rem;
  color: var(--accent);
  margin-top: 0.5rem;
}

/* --- Footer --- */
.footer {
  padding: 2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* --- Fade-in animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Blog Post Layout --- */
.post {
  padding-top: calc(var(--nav-height) + 4rem);
  padding-bottom: 6rem;
}

.post-header {
  margin-bottom: 3rem;
}

.post-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.post-back:hover {
  color: var(--accent);
}

.post-date {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.post-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.post-body {
  font-size: 1.1rem;
  line-height: 1.85;
}

.post-body p {
  margin-bottom: 1.75rem;
  font-size: 1.1rem;
}

.post-body h2 {
  font-size: 1.6rem;
  margin-top: 3rem;
  margin-bottom: 1.25rem;
}

.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--text-secondary);
}

.post-body a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.post-body hr {
  border: none;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  margin: 3rem 0;
}

.post-footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.post-footer a {
  font-weight: 500;
}

/* --- Writing Index (Blog listing page) --- */
.writing-index {
  padding-top: calc(var(--nav-height) + 4rem);
  padding-bottom: 6rem;
}

.writing-index h1 {
  margin-bottom: 3rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  section {
    padding: 4rem 1.5rem;
  }

  .nav-inner {
    padding: 0 1.5rem;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(249, 248, 246, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 1.5rem 2rem 2rem;
    gap: 1.25rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-mobile-toggle {
    display: block;
  }

  .nav-mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-mobile-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-height) + 3rem);
    padding-bottom: 3rem;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: flex-start;
  }

  .credentials-list {
    grid-template-columns: 1fr;
  }

  .email-form {
    flex-direction: column;
  }

  .email-form input[type="email"],
  .email-form button {
    width: 100%;
  }

  .post {
    padding-top: calc(var(--nav-height) + 2rem);
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }

  section {
    padding: 3rem 1.25rem;
  }
}