:root {
  --bg:      #FFFFFF;
  --surface: #F8F8F8;
  --border:  #E0E0E0;
  --text:    #111111;
  --muted:   #888888;
  --shadow:  0 2px 16px rgba(0,0,0,0.08);
}

[data-theme="dark"] {
  --bg:      #1A1A1A;
  --surface: #222222;
  --border:  #333333;
  --text:    #F0F0F0;
  --muted:   #888888;
  --shadow:  0 2px 16px rgba(0,0,0,0.4);
}

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

body {
  font-family: 'Roboto', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
}

/* Toggle */
.toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  width: 40px;
  height: 40px;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: background 0.3s, border-color 0.3s;
}

/* Layout */
main {
  max-width: 560px;
  margin: 0 auto;
  padding: 5rem 1.5rem 3rem;
  text-align: center;
}

/* Avatar */
.avatar {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1.2rem;
  box-shadow: var(--shadow);
}

/* Text */
h1 { font-size: 2rem; font-weight: 700; margin-bottom: 0.25rem; }

.title {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.9rem;
}

.bio {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 2rem;
}

/* Nav Buttons */
nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.1rem;
  border-radius: 8px;
  border: 1.5px solid var(--border);
  color: var(--text);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}

nav a:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
  transform: translateY(-2px);
}

nav a.cv {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

nav a.cv:hover { opacity: 0.8; transform: translateY(-2px); }

/* Email Row */
.email-row {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.email-greeting { font-size: 0.88rem; color: var(--muted); font-weight: 300; }

.email-address { font-size: 0.88rem; font-weight: 500; letter-spacing: 0.02em; }

.copy-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  color: var(--muted);
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.copy-btn:hover { background: var(--text); color: var(--bg); border-color: var(--text); }
.copy-btn.copied { background: #22c55e; color: #fff; border-color: #22c55e; }

/* Footer */
footer {
  font-size: 0.82rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}

@media (max-width: 480px) {
  h1 { font-size: 1.6rem; }
  nav a { padding: 0.5rem 0.85rem; font-size: 0.84rem; }
}