/* ============================================================
   LISA HAIR KONISHI — Personal Website
   Colors: #000000 (black) | #FFFFFF (white) | #002FA7 (Yves Klein Blue)
   Font: Charter
   ============================================================ */

:root {
  --black: #000000;
  --white: #ffffff;
  --blue: #1019EB;
  --serif: Charter, 'Bitstream Charter', 'Sitka Text', Cambria, serif;
}

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

html { font-size: 16px; }

body {
  font-family: var(--serif);
  color: var(--black);
  background: var(--white);
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ============================================================
   SITE BODY — left sidebar nav + main content
   ============================================================ */

.site-body {
  display: grid;
  grid-template-columns: 160px 1fr;
  flex: 1;
}

/* ---- LEFT SIDEBAR ---- */

.site-nav {
  padding: 2.5rem 1.5rem 2.5rem 2.5rem;
  border-right: 1px solid rgba(0, 0, 0, 0.08);
  align-self: start;
  position: sticky;
  top: 0;
}

.site-nav nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

.site-nav nav a {
  font-size: 0.8125rem;
  font-weight: normal;
  color: var(--black);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s ease;
  position: relative;
}

.site-nav nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--blue);
  transition: width 0.2s ease;
}

.site-nav nav a:hover { color: var(--blue); }
.site-nav nav a:hover::after { width: 100%; }
.site-nav nav a.active { color: var(--blue); }
.site-nav nav a.active::after { width: 100%; }

/* ---- MAIN CONTENT ---- */

main {
  padding: 2.5rem 3.5rem 6rem 3rem;
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */

/* Two-column: text left, image right */
.about-layout {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 4rem;
  align-items: center;
  min-height: calc(100vh - 6rem);
}

.about-text h1 {
  font-size: 2.5rem;
  font-weight: normal;
  line-height: 1.25;
  margin-bottom: 2.25rem;
}

.about-text h1 .name {
  color: var(--blue);
}

.about-text p {
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.about-accent {
  display: block;
  width: 2.25rem;
  height: 2px;
  background: var(--blue);
  margin: 2.25rem 0;
}

.about-section {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.about-section h2 {
  font-size: 0.7rem;
  font-weight: normal;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.4;
  margin-bottom: 1.25rem;
}

.about-section ul {
  list-style: none;
}

.about-section ul li {
  font-size: 0.9375rem;
  line-height: 1.6;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  margin-bottom: 0.6rem;
}

.about-section ul li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

/* Image column */
.about-image-wrap {
  width: 100%;
}

.about-image {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: rgba(0, 0, 0, 0.06);
  overflow: hidden;
  display: block;
  object-fit: cover;
  object-position: center center;
}

.image-credit {
  margin-top: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  opacity: 0.4;
  text-align: right;
}

.about-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.3;
}

/* ============================================================
   PROJECTS PAGE
   ============================================================ */

.projects-header {
  margin-bottom: 3.5rem;
}

.projects-header h1 {
  font-size: 1.5rem;
  font-weight: normal;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3.5rem 2.5rem;
}

.project-card {
  display: block;
}

.project-card:hover .project-image { opacity: 0.85; }
.project-card:hover .project-title { color: var(--blue); }

.project-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  margin-bottom: 1.1rem;
  transition: opacity 0.25s ease;
  position: relative;
  overflow: hidden;
}

.project-image.blue { background: var(--blue); }
.project-image.black { background: var(--black); }

.project-image-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  opacity: 0.35;
}

.project-meta {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.4;
  margin-bottom: 0.4rem;
}

.project-title {
  font-size: 1rem;
  font-weight: normal;
  margin-bottom: 0.45rem;
  transition: color 0.2s ease;
  line-height: 1.4;
}

.project-desc {
  font-size: 0.875rem;
  line-height: 1.65;
  opacity: 0.75;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  max-width: 860px;
}

.contact-intro h1 {
  font-size: 2rem;
  font-weight: normal;
  margin-bottom: 1.75rem;
  line-height: 1.3;
}

.contact-intro p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1.25rem;
  opacity: 0.8;
}

.contact-details {
  margin-top: 2.5rem;
}

.contact-details h2 {
  font-size: 0.7rem;
  font-weight: normal;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.4;
  margin-bottom: 1rem;
}

.contact-details a {
  font-size: 0.9375rem;
  color: var(--blue);
  display: block;
  margin-bottom: 0.5rem;
  transition: opacity 0.2s ease;
}

.contact-details a:hover { opacity: 0.7; }

.form-group {
  margin-bottom: 2rem;
}

.form-group label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.4;
  margin-bottom: 0.6rem;
}

.form-group input,
.form-group textarea {
  display: block;
  width: 100%;
  font-family: var(--serif);
  font-size: 0.9375rem;
  color: var(--black);
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(0, 0, 0, 0.25);
  padding: 0.5rem 0 0.75rem;
  outline: none;
  transition: border-color 0.2s ease;
  line-height: 1.6;
  resize: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--black);
  opacity: 0.3;
}

.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--blue);
}

.form-group textarea { height: 130px; }

.form-submit { margin-top: 2.5rem; }

.btn-submit {
  display: inline-block;
  font-family: var(--serif);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--blue);
  border: none;
  padding: 0.9rem 2.25rem;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.btn-submit:hover { opacity: 0.85; }

.form-note {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  opacity: 0.4;
}

.form-message {
  display: none;
  margin-top: 1.25rem;
  font-size: 0.9375rem;
}

.form-message.success { color: var(--blue); }
.form-message.error { opacity: 0.6; }

/* ============================================================
   FOOTER
   ============================================================ */

footer {
  padding: 1.75rem 3.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

footer p {
  font-size: 0.75rem;
  opacity: 0.35;
  letter-spacing: 0.04em;
}

/* ============================================================
   RESPONSIVE — TABLET (max 900px)
   ============================================================ */

@media (max-width: 900px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .about-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .about-image {
    position: static;
    aspect-ratio: 16 / 9;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE (max 640px)
   ============================================================ */

@media (max-width: 640px) {
  .site-body {
    grid-template-columns: 1fr;
  }

  .site-nav {
    padding: 1.25rem 1.5rem;
    position: static;
    border-right: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  }

  .site-nav nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
  }

  main {
    padding: 2.5rem 1.5rem 4rem;
  }

  .about-text h1 { font-size: 1.875rem; }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  footer {
    padding: 1.5rem;
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}