/* ============================================================
   base.css  —  Layout and structure styles shared by all themes.
   Theme-specific colors (backgrounds, text, accents) live in
   static/css/themes/light.css and static/css/themes/dark.css.
   ============================================================ */

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

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

/* ----- Site header ----- */
.site-header {
  padding: 2rem 1.5rem 1rem;
  text-align: center;
}

.header-name {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.header-tagline {
  font-size: 1.05rem;
  margin-top: 0.25rem;
  opacity: 0.8;
}

/* ----- Navigation ----- */
.site-nav {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  gap: 2rem;
  font-size: 0.95rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ----- Main content area ----- */
.site-main {
  flex: 1;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ----- Generic section spacing ----- */
.section {
  margin-bottom: 3.5rem;
}

.section h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid;
}

/* ----- About section ----- */
.about-text {
  font-size: 1.05rem;
}

.about-text p + p {
  margin-top: 1rem;
}

/* ----- Project grid ----- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.75rem;
}

/* ----- Project card ----- */
.project-card {
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.2s ease;
}

.project-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.14);
}

.project-image-wrapper {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.project-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;

}

.project-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}

.project-title {
  font-size: 1.2rem;
  font-weight: 600;
}

.project-summary {
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ----- Tech stack badges ----- */
.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tech-badge {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

/* ----- Collapsible project details ----- */
.project-details {
  font-size: 0.9rem;
}

.project-details summary {
  cursor: pointer;
  font-weight: 500;
  padding: 0.25rem 0;
  list-style: none;
}

.project-details summary::-webkit-details-marker {
  display: none;
}

.project-details summary::before {
  content: "▶  ";
  font-size: 0.7em;
}

details[open] summary::before {
  content: "▼  ";
}

.detail-block {
  margin-top: 0.75rem;
}

.detail-block h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.25rem;
  font-weight: 600;
}

/* ----- Project link buttons ----- */
.project-links {
  display: flex;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 0.5rem;
}

.btn {
  display: inline-block;
  padding: 0.45rem 1rem;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: opacity 0.15s ease;
}

.btn:hover {
  opacity: 0.85;
  text-decoration: none;
}

/* ----- Contact section ----- */
.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.98rem;
}

.contact-label {
  font-weight: 600;
  margin-right: 0.4rem;
}

/* ----- Footer ----- */
.site-footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.85rem;
  opacity: 0.7;
}

/* ----- Responsive tweaks ----- */
@media (max-width: 500px) {
  .project-grid {
    grid-template-columns: 1fr;
  }
  .header-name {
    font-size: 1.5rem;
  }
}