@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&display=swap");

:root {
  --bg: #ffffff;
  --surface: #fafafa;
  --text: #1a1a1a;
  --muted: #6b6b6b;
  --line: #e6e6e6;
  --accent: #0a8f4c;
  --accent-dark: #076c3a;
  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ─── NAVIGATION ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 2.5rem;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--text);
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--text);
}

/* ─── ABOUT ─── */
.about {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 7.5rem 2rem 5rem;
}

.about-inner {
  max-width: 720px;
  width: 100%;
  text-align: center;
}

.about-role {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.5rem;
}

.about-portrait {
  position: relative;
  width: 168px;
  height: 168px;
  margin: 0 auto 2rem;
  border-radius: 50%;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 3.4rem;
  color: #d0d0d0;
}

.about-portrait img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-name {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 1.1rem;
}

.about-bio {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 auto 2rem;
  max-width: 58ch;
}

.about-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.4rem;
}

.about-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.about-links a:hover {
  color: var(--accent-dark);
  border-bottom-color: var(--accent-dark);
}

/* ─── TOAST ─── */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  z-index: 2000;
  max-width: min(90vw, 460px);
  padding: 0.65rem 1.15rem;
  border-radius: 99px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.12);
  font-size: 0.85rem;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}

.toast.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.toast .toast-label {
  color: var(--muted);
  margin-right: 0.4rem;
}

.toast .toast-value {
  font-weight: 600;
}

@media (max-width: 640px) {
  .nav {
    padding: 1rem 1.4rem;
  }

  .nav-links {
    gap: 1.2rem;
  }

  .nav-links a {
    font-size: 0.9rem;
  }

  .about {
    padding: 6rem 1.4rem 4rem;
  }
}