/* ============================================================
   Alexandra Bremers — Portfolio Site
   ============================================================ */

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

:root {
  --bg: #F5F1EB;
  --bg-alt: #EDE8E0;
  --text: #1a1a1a;
  --text-light: #5c5c5c;
  --accent: #1B4332;
  --accent-light: rgba(27, 67, 50, 0.08);
  --border: #d4cfc7;
  --card-bg: #FDFBF7;
  --card-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --card-shadow-hover: 0 10px 25px rgba(0,0,0,0.1), 0 4px 10px rgba(0,0,0,0.05);
  --radius: 6px;
  --font: 'Georgia', 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --max-width: 960px;
  --nav-height: 56px;
}

[data-theme="dark"] {
  --bg: #0f1a14;
  --bg-alt: #162419;
  --text: #e4e4e0;
  --text-light: #9ca39c;
  --accent: #6db88a;
  --accent-light: rgba(109, 184, 138, 0.1);
  --border: #2a3a30;
  --card-bg: #162419;
  --card-shadow: 0 1px 3px rgba(0,0,0,0.3);
  --card-shadow-hover: 0 10px 25px rgba(0,0,0,0.4);
}

/* --- Base --- */
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 1rem); }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
h1, h2, h3 { line-height: 1.3; }

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-name {
  font-size: 0.95rem;
  font-family: var(--font-sans);
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav-name strong { font-weight: 700; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.nav-links a {
  font-size: 0.85rem;
  font-family: var(--font-sans);
  color: var(--text-light);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); text-decoration: none; }

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem;
  cursor: pointer;
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }
:root .icon-sun { display: none; }
:root .icon-moon { display: block; }

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  padding-top: var(--nav-height);
}

/* --- Hero --- */
.hero {
  text-align: center;
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
}
.hero-name {
  font-size: 2.2rem;
  font-weight: 300;
  letter-spacing: -0.03em;
  margin-bottom: 0.6rem;
}
.hero-name .bold { font-weight: 700; }
.hero-tagline {
  font-size: 1.2rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.75rem;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
}
.hero-sub {
  font-size: 0.95rem;
  color: var(--text-light);
  max-width: 640px;
  margin: 0 auto 1.5rem;
  line-height: 1.65;
}
.hero-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}
.btn {
  display: inline-block;
  padding: 0.4rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  color: var(--accent);
  font-size: 0.82rem;
  font-family: var(--font-sans);
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
}
.btn:hover {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  opacity: 0.85;
}

/* --- About --- */
.about {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}
.about h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.about-grid {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 2rem;
  align-items: start;
}
.about-photo img {
  border-radius: 50%;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}
.about-text p {
  margin-bottom: 0.75rem;
  font-size: 0.93rem;
  line-height: 1.7;
}

/* --- Section headers --- */
section > h2, .section-header h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 2rem;
}

/* --- Featured Work --- */
.featured {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}
.featured-project {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.featured-project:last-child { border-bottom: none; padding-bottom: 0; margin-bottom: 0; }
.featured-project.reverse .featured-img { order: 2; }
.featured-project.reverse .featured-info { order: 1; }

.featured-img img {
  border-radius: var(--radius);
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.featured-img img:hover { transform: scale(1.02); }

.featured-meta {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
  font-size: 0.75rem;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.theme-label { color: var(--accent); font-weight: 600; }
.year { color: var(--text-light); }

.featured-info h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.featured-info p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text);
  margin-bottom: 0.6rem;
}
.featured-info .venue {
  font-size: 0.82rem;
  color: var(--text-light);
  font-style: italic;
  margin: 0;
}
.featured-info .venue a { font-style: normal; }

/* --- Tags --- */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-bottom: 0.5rem;
}
.tags span {
  display: inline-block;
  padding: 0.12rem 0.5rem;
  background: var(--accent-light);
  border-radius: 3px;
  font-size: 0.7rem;
  font-family: var(--font-sans);
  color: var(--accent);
  font-weight: 500;
}

/* --- All Projects --- */
.all-projects {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}

.filter-section {
  margin-bottom: 1.5rem;
}
.filter-group {
  margin-bottom: 0.75rem;
}
.filter-label {
  font-size: 0.7rem;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-light);
  font-weight: 600;
  margin-bottom: 0.35rem;
}
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.filter-btn {
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: transparent;
  color: var(--text-light);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: var(--font-sans);
}
.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* --- Project Grid --- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.project-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: all 0.2s ease;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
  text-decoration: none;
}
.project-card img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}
.card-body {
  padding: 0.9rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.3rem;
}
.card-cat { color: var(--accent); font-weight: 600; }
.card-meta span:last-child { color: var(--text-light); }
.card-body h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  line-height: 1.35;
  color: var(--text);
}
.card-body p {
  font-size: 0.8rem;
  color: var(--text-light);
  line-height: 1.5;
  margin-bottom: 0.5rem;
  flex: 1;
}

.project-card.hidden {
  display: none;
}

/* --- Themes Grid --- */
.themes {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}
.themes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.theme-card {
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s ease;
}
.theme-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
}
.theme-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.35rem;
}
.theme-card p {
  font-size: 0.82rem;
  color: var(--text-light);
  line-height: 1.5;
}

/* --- Experience --- */
.experience {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}
.exp-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}
.exp-item {
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding: 0.5rem 0;
}
.exp-org {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--accent);
}
.exp-role {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text);
}
.exp-year {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--text-light);
  text-align: right;
}
.exp-education {
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.exp-education h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.edu-items {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* --- Contact --- */
.contact {
  text-align: center;
  padding: 3rem 0;
}
.contact h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.contact p {
  color: var(--text-light);
  margin-bottom: 1rem;
  font-size: 0.93rem;
}
.contact-links a {
  font-weight: 500;
}
.sep {
  color: var(--text-light);
  margin: 0 0.4rem;
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.78rem;
  font-family: var(--font-sans);
  color: var(--text-light);
  border-top: 1px solid var(--border);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  .hero-name { font-size: 1.7rem; }
  .hero-tagline { font-size: 1.05rem; }

  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .about-photo {
    max-width: 160px;
    margin: 0 auto;
  }

  .featured-project {
    grid-template-columns: 1fr;
  }
  .featured-project.reverse .featured-img,
  .featured-project.reverse .featured-info { order: unset; }

  .project-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .exp-item {
    grid-template-columns: 1fr;
    gap: 0.1rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border);
  }
  .exp-item:last-child { border-bottom: none; }
  .exp-year { text-align: left; }

  .nav-links a { font-size: 0.78rem; }
  .nav-links { gap: 0.75rem; }
}

@media (max-width: 480px) {
  .project-grid {
    grid-template-columns: 1fr;
  }
  .hero { padding: 3rem 0 2rem; }
  .hero-name { font-size: 1.5rem; }
}