/* -----------------------------------
   VARIABLES & BASE STYLES
----------------------------------- */
:root {
  --accent: #49C485;
  --text: #111;
  --muted: #555;
  --bg: #ffffff;
  --max-width: 1000px;
  --radius: 10px;
  --font-body: 'Inter', sans-serif;
  --font-heading: 'Merriweather', serif;
  --transition: 0.2s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover, a:focus {
  color: #2f8c5d;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  z-index: 999;
}

/* -----------------------------------
   HEADER & NAVIGATION
----------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #eee;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.8rem 1.25rem;
}

/* Brand */
.brand-link {
  text-decoration: none;
  color: inherit;
}

.brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0;
}

.brand-sub {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 600;
}

/* Language switch */
.lang-switch {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  margin-right: 1rem;
}

.lang-switch a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.2rem 0.4rem;
}

.lang-switch a.active {
  color: var(--accent);
  font-weight: 700;
}

/* Nav */
.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.nav-list a {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.95rem;
}

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

/* Hamburger menu for mobile */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger {
  width: 24px;
  height: 2px;
  background: var(--text);
  position: relative;
  display: block;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

/* -----------------------------------
   LAYOUT SECTIONS
----------------------------------- */
.section {
  padding: 3rem 1rem;
}

.section-muted {
  background: #fafafa;
}

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

.narrow {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Typography */
.section-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
}

.section-lead {
  margin: 0.3rem 0 1rem;
  color: var(--muted);
}

.eyebrow {
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.1rem;
  margin: 0.3rem 0 0.8rem;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text);
  max-width: 65ch;
}

.hero-links {
  display: flex;
  gap: 1rem;
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.hero-links a {
  color: var(--muted);
  font-weight: 600;
  text-decoration: none;
}

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

/* Reduced space between sections */
.section + .section {
  padding-top: 2.2rem;
}

/* -----------------------------------
   PUBLICATIONS
----------------------------------- */
.pub-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.pub-item {
  border-left: 3px solid transparent;
  padding-left: 1rem;
  transition: border-color var(--transition);
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--text);
}

.pub-item:hover {
  border-left-color: var(--accent);
}

.pub-meta {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-block;
  margin-bottom: 0.2rem;
}

.pub-title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  margin: 0;
  line-height: 1.4;
}

.pub-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.more {
  margin-top: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: background var(--transition);
}

.btn:hover {
  background: #3da76d;
}


/* -----------------------------------
   CV & SKILLS
----------------------------------- */
.cv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.cv-list, .skills-list {
  margin: 0;
  padding-left: 1rem;
  color: var(--text);
}

.cv-list li, .skills-list li {
  margin: 0.4rem 0;
}

/* -----------------------------------
   SPEAKING, TEACHING, RESOURCES
----------------------------------- */
.simple-list {
  list-style: none;
  padding-left: 0;
}

.simple-list li {
  margin: 0.4rem 0;
}

.cards-grid {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.card {
  border: 1px solid #eee;
  border-radius: var(--radius);
  padding: 1rem;
  background: #fff;
  box-shadow: 0 8px 20px rgba(0,0,0,0.03);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.06);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  margin: 0 0 0.4rem;
}

.card-excerpt {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* -----------------------------------
   CONTACT & FOOTER
----------------------------------- */
.site-footer {
  background: #fafafa;
  border-top: 1px solid #eee;
  padding: 2.5rem 1rem;
  text-align: center;
}

.section-lead {
  margin-bottom: 1rem;
}

.contact-line a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.contact-line a:hover {
  color: #2f8c5d;
}

.copyright {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 1.2rem;
}

.legal {
  color: var(--muted);
  font-size: 0.6rem;
  margin-top: 1.2rem;
}

/* -----------------------------------
   RESPONSIVE
----------------------------------- */
@media (max-width: 900px) {
  .nav-list {
    display: none;
    position: absolute;
    right: 1rem;
    top: 100%;
    flex-direction: column;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    padding: 0.75rem 1rem;
  }

  .nav-list.show {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .lang-switch {
    position: absolute;
    top: 1rem;
    right: 3.5rem;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .hero-title {
    font-size: 1.6rem;
  }

  .section {
    padding: 2.2rem 1rem;
  }
}

@media (max-width: 480px) {
  .hero-lead {
    font-size: 1rem;
  }

  .hero-links {
    flex-direction: column;
    gap: 0.4rem;
  }

  .nav-list {
    right: 0.5rem;
  }
}