/* ---------- Theme variables ---------- */
:root {
  --bg: #ffffff;
  --text: #1a1a2e;
  --muted: #5c6370;
  --accent: #0b6e4f;
  --accent-soft: #0b6e4f1a;
  --border: #e4e6ea;
  --nav-bg: #ffffffcc;
}

:root[data-theme="dark"] {
  --bg: #101418;
  --text: #e8eaed;
  --muted: #9aa3ad;
  --accent: #4ecf9d;
  --accent-soft: #4ecf9d1f;
  --border: #262c33;
  --nav-bg: #101418cc;
}

/* ---------- Base ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  transition: background 0.25s, color 0.25s;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

section { padding: 3.5rem 0 0.5rem; }

h1 { font-size: 2.4rem; line-height: 1.2; letter-spacing: -0.02em; }

h2 {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

h2::after {
  content: "";
  display: block;
  width: 3rem;
  height: 3px;
  margin-top: 0.4rem;
  background: var(--accent);
  border-radius: 2px;
}

p { margin-bottom: 1rem; }

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

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 1.5rem;
  backdrop-filter: blur(10px);
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
}

.nav nav { display: flex; gap: 1.5rem; }

.nav a {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
}
.nav a:hover { color: var(--accent); text-decoration: none; }

#theme-toggle {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
}

:root[data-theme="light"] .moon { display: none; }
:root[data-theme="dark"] .sun { display: none; }

/* ---------- Hero ---------- */
.hero { padding-top: 5rem; }

.tagline {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 38rem;
  margin-top: 1rem;
}

.links { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }

.links a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
}

.links svg { width: 1em; height: 1em; flex-shrink: 0; }

/* ---------- Wave ---------- */
.wave {
  display: inline-block;
  transform-origin: 70% 70%;
}
.hero h1:hover .wave { animation: wave 1.2s ease-in-out; }

@keyframes wave {
  0%, 100% { transform: rotate(0deg); }
  20% { transform: rotate(14deg); }
  40% { transform: rotate(-8deg); }
  60% { transform: rotate(14deg); }
  80% { transform: rotate(-4deg); }
}
.links a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
  text-decoration: none;
}

/* ---------- Experience ---------- */
.job {
  border-left: 2px solid var(--border);
  padding: 0 0 2rem 1.5rem;
  position: relative;
}

.job::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 0.45em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
}

.job-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.job h3 { font-size: 1.15rem; }

.dates { color: var(--muted); font-size: 0.9rem; }

.role { color: var(--muted); font-size: 0.95rem; margin-bottom: 0.6rem; }

.job ul { padding-left: 1.1rem; }
.job li { margin-bottom: 0.45rem; font-size: 0.97rem; }

/* ---------- Resume button ---------- */
.button {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.55rem 1.2rem;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  font-weight: 600;
}
.button:hover { opacity: 0.88; text-decoration: none; }
:root[data-theme="dark"] .button { color: #0e1113; }

/* ---------- Footer ---------- */
footer {
  margin-top: 4rem;
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
  border-top: 1px solid var(--border);
}

/* ---------- Small screens ---------- */
@media (max-width: 520px) {
  h1 { font-size: 1.9rem; }
  .hero { padding-top: 3rem; }
}