:root {
  --bg: #fafaf7;
  --bg-surface: #ffffff;
  --text: #2d2d2d;
  --text-secondary: #666670;
  --accent: #1a3a5c;
  --accent-hover: #0f2840;
  --highlight: #c0392b;
  --highlight-hover: #a93226;
  --border: #e0e0dc;
  --toggle-bg: #e5e5e0;
}

[data-theme="dark"] {
  --bg: #1c1c1e;
  --bg-surface: #2a2a2d;
  --text: #e8e4df;
  --text-secondary: #9a958e;
  --accent: #6b9fd4;
  --accent-hover: #5588bb;
  --highlight: #c0392b;
  --highlight-hover: #a93226;
  --border: #3a3a3d;
  --toggle-bg: #3a3a3d;
}

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

body {
  font-family: "Source Sans 3", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  transition: background 0.3s, color 0.3s;
  -webkit-font-smoothing: antialiased;
}

/* Layout */

.hero,
.section {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Nav icons (top-right) */

.game-link {
  position: fixed;
  top: 1.25rem;
  right: 4.5rem;
  background: none;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  text-decoration: none;
  transition: background 0.3s, color 0.3s;
  z-index: 10;
}

.game-link:hover {
  opacity: 0.8;
  text-decoration: none;
}

.game-link img {
  display: block;
  border-radius: 4px;
}

/* Theme toggle */

.theme-toggle {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--toggle-bg);
  border: none;
  border-radius: 50%;
  width: 42px;
  height: 42px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: background 0.3s, color 0.3s;
  z-index: 10;
}

.theme-toggle:hover {
  opacity: 0.8;
}

.icon-sun { display: none; }
.icon-moon { display: block; }

[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

/* Hero — text left, photo right */

.hero {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 2.5rem;
  padding-top: 6rem;
  padding-bottom: 4rem;
}

.profile-photo {
  border-radius: 50%;
  object-fit: cover;
}

.hero-text {
  text-align: left;
}

h1 {
  font-family: "Merriweather", Georgia, serif;
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 0.3rem;
  color: var(--accent);
}

.tagline {
  font-family: "Merriweather", Georgia, serif;
  font-size: 1.2rem;
  font-weight: 400;
  font-style: italic;
  color: var(--highlight);
  margin-bottom: 1rem;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 480px;
}

/* Section labels */

.section-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--highlight);
  margin-bottom: 0.3rem;
}

/* Sections */

.section {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
  border-top: 1px solid var(--border);
}

h2 {
  font-family: "Merriweather", Georgia, serif;
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.section > p {
  margin-bottom: 0.75rem;
}

.section > p:last-of-type {
  margin-bottom: 0;
}

/* Links */

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--border);
  text-underline-offset: 2px;
  transition: color 0.2s, text-decoration-color 0.2s;
}

a:hover {
  color: var(--highlight);
  text-decoration-color: var(--highlight);
}

/* Timeline */

.timeline {
  position: relative;
  padding-left: 1.5rem;
  border-left: 2px solid var(--border);
}

.timeline-entry {
  position: relative;
  padding: 1.25rem;
  margin-bottom: 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.timeline-entry:last-child {
  margin-bottom: 0;
}

.timeline-entry::before {
  content: "";
  position: absolute;
  left: -1.9375rem;
  top: 1.5rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--highlight);
}

.timeline-period {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  background: var(--highlight);
  color: #fff;
  letter-spacing: 0.03em;
  margin-bottom: 0.35rem;
}

.timeline-entry h3 {
  font-family: "Source Sans 3", sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0.15rem 0 0.15rem;
}

.timeline-company {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

/* Tags */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tags span {
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  background: var(--bg);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* Grid — 3 columns */

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.grid-item {
  padding: 1.25rem;
  border-radius: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--highlight);
}

.grid-item h3 {
  font-family: "Source Sans 3", sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.grid-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Education */

.education-entry {
  margin-bottom: 1rem;
}

.education-entry:last-child {
  margin-bottom: 0;
}

.education-entry h3 {
  font-family: "Source Sans 3", sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent);
}

.education-entry p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* 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);
}

/* Responsive */

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    padding-top: 4rem;
    padding-bottom: 3rem;
    gap: 1.5rem;
  }

  .hero-text {
    text-align: center;
    order: 2;
  }

  .profile-photo {
    order: 1;
  }

  .subtitle {
    max-width: 100%;
  }

  h1 {
    font-size: 2rem;
  }

  .tagline {
    font-size: 1.05rem;
  }

  .subtitle {
    font-size: 0.95rem;
  }

  h2 {
    font-size: 1.5rem;
  }

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

  .hero,
  .section {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
}