:root {
  --bg: #fff1f2;
  --bg-secondary: #ffe4e6;
  --text: #1c1917;
  --text-secondary: #78716c;
  --accent: #e11d48;
  --accent-hover: #be123c;
  --border: #fecdd3;
  --shadow: rgba(225, 29, 72, 0.1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1917;
    --bg-secondary: #292524;
    --text: #fafaf9;
    --text-secondary: #a8a29e;
    --accent: #f43f5e;
    --accent-hover: #e11d48;
    --border: #44403c;
    --shadow: rgba(244, 63, 94, 0.2);
  }
}

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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: relative;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.nav__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}

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

.nav__links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--accent);
}

.nav__lang a {
  color: var(--text-secondary);
  font-weight: 700;
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.85rem;
}

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

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav__toggle-bar {
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: 0.3s;
}

/* Main */
main {
  flex: 1;
  padding: 4rem 2rem;
}

/* Hero */
.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero__content {
  max-width: 600px;
}

.hero__photo {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1.5rem;
  border: 3px solid var(--border);
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.hero__tagline {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.hero__socials {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.hero__socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--accent);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.hero__socials a:hover {
  color: var(--accent-hover);
  border-color: var(--accent-hover);
  background: var(--bg);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  border-radius: 0.5rem;
  font-weight: 500;
  transition: background 0.2s;
}

.btn:hover {
  background: var(--accent-hover);
}

/* Project Grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.project-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.project-card:hover {
  box-shadow: 0 4px 12px var(--shadow);
}

.project-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.project-card__content {
  padding: 1.5rem;
}

.project-card h3 {
  margin-bottom: 0.5rem;
}

.project-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.project-card .btn {
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
}

/* About */
.about {
  max-width: 700px;
  margin: 0 auto;
}

.about__photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 2rem;
  border: 3px solid var(--border);
}

.about h1 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.about h2 {
  font-size: 1.35rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.about p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.about a {
  color: var(--accent);
  text-decoration: none;
}

.about a:hover {
  text-decoration: underline;
}

.contact-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
}

.contact-list svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* Page title */
.page-title {
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
}

/* Publication list */
.pub-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.pub-card {
  display: flex;
  gap: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.pub-card:hover {
  box-shadow: 0 4px 12px var(--shadow);
}

.pub-card__img {
  width: 160px;
  min-height: 100%;
  object-fit: cover;
  flex-shrink: 0;
}

.pub-card__content {
  padding: 1.5rem;
  flex: 1;
}

.pub-card__content h3 {
  margin-bottom: 0.25rem;
}

.pub-card__venue {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.pub-card__content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.btn--sm {
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
}

/* Mobile pub cards */
@media (max-width: 768px) {
  .pub-card {
    flex-direction: column;
  }

  .pub-card__img {
    width: 100%;
    height: 160px;
  }
}

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

/* Mobile */
@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    padding: 1rem 2rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
  }

  .nav__links.active {
    display: flex;
  }

  .hero h1 {
    font-size: 1.75rem;
  }
}

/* CV Page */
.cv {
  max-width: 700px;
  margin: 0 auto;
}

.cv h1 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.cv__download {
  margin-bottom: 2rem;
}

.btn--download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.cv__section {
  margin-bottom: 2.5rem;
}

.cv__section h2 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.cv__item {
  margin-bottom: 1.5rem;
}

.cv__item h3 {
  font-size: 1.15rem;
  margin-bottom: 0.25rem;
  color: var(--accent);
  font-weight: 700;
}

.cv__meta {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.cv__item ul {
  list-style: disc;
  padding-left: 1.25rem;
  color: var(--text-secondary);
}

.cv__item ul li {
  margin-bottom: 0.35rem;
}

.cv__skills p {
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

.cv__section > ul {
  list-style: disc;
  padding-left: 1.25rem;
  color: var(--text-secondary);
}

.cv__section > ul li {
  margin-bottom: 0.5rem;
}