/* ============================================
   PORTFOLIO STYLESHEET
   Neutral warm + earthy accent palette
   Cormorant Garamond + DM Sans
   ============================================ */

/* -------- TOKENS -------- */
:root {
  --bg:          #F6F1EB;
  --bg-alt:      #EDE7DC;
  --surface:     #E6DDD0;
  --ink:         #1C1814;
  --ink-muted:   #6B6058;
  --ink-faint:   #A89E94;
  --accent:      #9A6B3F;
  --accent-light:#C49A72;
  --accent-bg:   #F0E6D6;
  --border:      #D6CEC4;

  --font-serif:  'Cormorant Garamond', Georgia, serif;
  --font-sans:   'DM Sans', system-ui, sans-serif;

  --max-w:       1120px;
  --gap:         clamp(2rem, 5vw, 4rem);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* -------- RESET -------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, textarea, button { border: none; outline: none; background: none; font-family: inherit; font-size: inherit; }

/* -------- UTILITY -------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 2.5rem);
}
.section { padding: clamp(5rem, 10vw, 8rem) 0; }
.hidden { display: none !important; }
.section-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.section-heading {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 500;
  line-height: 1.15;
  color: var(--ink);
}
.section-heading em {
  font-style: italic;
  color: var(--accent);
}

/* -------- BUTTONS -------- */
.btn-primary {
  display: inline-block;
  padding: 0.85rem 2rem;
  background: var(--ink);
  color: var(--bg);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: 2px;
  transition: background 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}
.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

/* -------- NAV -------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(246, 241, 235, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.site-header.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 2.5rem);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink);
  transition: color 0.2s;
}
.nav-logo:hover { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}
.nav-links a {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  position: relative;
  transition: color 0.2s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.25s var(--ease-out);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { width: 100%; }

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  background: none;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s var(--ease-out), opacity 0.2s;
}
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child  { transform: translateY(-6.5px) rotate(-45deg); }

/* -------- HERO -------- */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 64px;
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 2.5rem);
  padding-top: clamp(4rem, 10vw, 7rem);
  padding-bottom: clamp(4rem, 10vw, 7rem);
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.7s var(--ease-out) 0.1s forwards;
}
.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-light);
}
.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 500;
  line-height: 1.0;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 1.5rem;
  max-width: 14ch;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.25s forwards;
}
.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--ink-muted);
  max-width: 52ch;
  margin-bottom: 2rem;
  line-height: 1.6;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.4s forwards;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.5s forwards;
}
.tag {
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--ink-muted);
  background: var(--bg);
}
.hero .btn-primary {
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.6s forwards;
}

/* Hero decorative shape */
.hero-deco {
  position: absolute;
  top: 10%;
  right: -5%;
  width: clamp(280px, 40vw, 560px);
  aspect-ratio: 1;
  border-radius: 60% 40% 50% 50% / 50% 60% 40% 50%;
  background: radial-gradient(ellipse at 40% 40%, var(--accent-bg), transparent 70%);
  opacity: 0.7;
  pointer-events: none;
}

/* -------- ABOUT -------- */
.about { background: var(--bg-alt); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: start;
}
.about-left { position: sticky; top: 90px; }
.about-right p {
  color: var(--ink-muted);
  margin-bottom: 1.25rem;
  max-width: 58ch;
}
.about-lead {
  font-family: var(--font-serif);
  font-size: 1.35rem !important;
  font-weight: 500;
  color: var(--ink) !important;
  line-height: 1.5;
}
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}
.skill-group h3 {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.85rem;
}
.skill-group li {
  font-size: 0.9rem;
  color: var(--ink-muted);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--surface);
  transition: color 0.2s, padding-left 0.2s var(--ease-out);
}
.skill-group li:hover {
  color: var(--ink);
  padding-left: 0.4rem;
}

/* -------- PROJECTS -------- */
.section-header {
  margin-bottom: 2.5rem;
}
.filter-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--ink-muted);
  background: var(--bg);
  transition: all 0.2s var(--ease-out);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 480px), 1fr));
  gap: 1.5px;
  background: var(--border);
  border: 1.5px solid var(--border);
}
.project-card {
  background: var(--bg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: background 0.2s;
}
.project-card:hover { background: var(--accent-bg); }
.project-card.hidden-card { display: none; }
.project-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.project-type {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
.project-year {
  font-size: 0.8rem;
  color: var(--ink-faint);
}
.project-title {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 500;
  line-height: 1.2;
  color: var(--ink);
}
.project-desc {
  font-size: 0.9rem;
  color: var(--ink-muted);
  line-height: 1.65;
  flex: 1;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.project-tags li {
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  background: var(--surface);
  border-radius: 2px;
  color: var(--ink-muted);
  letter-spacing: 0.03em;
}
.project-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.02em;
  margin-top: 0.25rem;
  transition: gap 0.2s;
  align-self: flex-start;
}
.project-link:hover { color: var(--ink); }

/* -------- CONTACT -------- */
.contact { background: var(--bg-alt); }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: start;
}
.contact-left p {
  margin-top: 1.5rem;
  color: var(--ink-muted);
  font-size: 0.95rem;
  max-width: 34ch;
}
.contact-links {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.contact-link {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.2s, padding-left 0.2s var(--ease-out);
}
.contact-link:hover { color: var(--ink); padding-left: 0.3rem; }
.contact-link::before {
  content: '→';
  font-size: 0.75rem;
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.form-group label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.form-group input,
.form-group textarea {
  padding: 0.8rem 1rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg);
  color: var(--ink);
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-light);
  box-shadow: 0 0 0 3px rgba(154, 107, 63, 0.1);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--ink-faint); }
.contact-form .btn-primary { align-self: flex-start; }

/* Success state */
.form-success {
  padding: 1.5rem;
  background: var(--accent-bg);
  border: 1px solid var(--accent-light);
  border-radius: 2px;
  font-size: 0.9rem;
  color: var(--accent);
  display: none;
}

/* -------- FOOTER -------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  background: var(--bg);
}
.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-name {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
}
.footer-copy {
  font-size: 0.78rem;
  color: var(--ink-faint);
}

/* -------- ANIMATIONS -------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* -------- RESPONSIVE -------- */
@media (max-width: 768px) {
  /* Nav mobile */
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem clamp(1.25rem, 5vw, 2.5rem);
    gap: 1.25rem;
    transform: translateY(-110%);
    transition: transform 0.35s var(--ease-out);
    z-index: 99;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { font-size: 1rem; }

  /* Layout stacks */
  .about-grid       { grid-template-columns: 1fr; }
  .about-left       { position: static; }
  .skills-grid      { grid-template-columns: 1fr; }
  .contact-inner    { grid-template-columns: 1fr; }
  .form-row         { grid-template-columns: 1fr; }
  .hero-deco        { opacity: 0.4; }
}