/* CSS Variables - Dark Theme (default) */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border-primary: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --spotify-green: #1db954;
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-tertiary: #eaeef2;
  --border-primary: #d0d7de;
  --text-primary: #1f2328;
  --text-secondary: #656d76;
  --text-muted: #8c959f;
  --accent: #0969da;
  --accent-hover: #0550ae;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-hover);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

/* Theme Toggle */
.theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-primary);
  border-radius: 50%;
  background: var(--bg-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s;
  z-index: 100;
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-secondary);
}

.theme-toggle .icon {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

/* Header / Profile */
.profile {
  text-align: center;
  margin-bottom: 3rem;
}

.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 3px solid var(--border-primary);
  margin-bottom: 1rem;
}

.name {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.username {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.tagline {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.location {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Links */
.links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: background 0.2s, border-color 0.2s;
}

.link-btn:hover {
  background: var(--border-primary);
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

.link-btn .icon {
  width: 16px;
  height: 16px;
}

/* Section */
.section {
  margin-bottom: 2.5rem;
}

.section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--bg-tertiary);
}

/* Project Cards */
.projects {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  display: block;
  padding: 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 8px;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-title .icon {
  width: 18px;
  height: 18px;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.card-meta {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.card-lang {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.lang-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.lang-shell { background: #89e051; }
.lang-js { background: #f1e05a; }
.lang-html { background: #e34c26; }

/* Tracks */
.tracks {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.track {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: 8px;
  transition: border-color 0.2s, transform 0.2s;
}

.track:hover {
  border-color: var(--spotify-green);
  transform: translateY(-2px);
}

.track .icon-music {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.track-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.track-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-artist {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.track .icon-spotify {
  width: 22px;
  height: 22px;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: color 0.2s;
}

.track:hover .icon-spotify {
  color: var(--spotify-green);
}

/* Footer */
.footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--bg-tertiary);
  text-align: center;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 1rem;
}

.social-links a {
  color: var(--text-secondary);
  transition: color 0.2s;
}

.social-links a:hover {
  color: var(--text-primary);
}

.social-links .icon {
  width: 22px;
  height: 22px;
}

.copyright {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Icons */
.icon {
  display: inline-block;
  background-color: currentColor;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
}

.icon-globe {
  -webkit-mask-image: url('icons/globe.svg');
  mask-image: url('icons/globe.svg');
}

.icon-github {
  -webkit-mask-image: url('icons/github.svg');
  mask-image: url('icons/github.svg');
}

.icon-repo {
  -webkit-mask-image: url('icons/repo.svg');
  mask-image: url('icons/repo.svg');
}

.icon-linkedin {
  -webkit-mask-image: url('icons/linkedin.svg');
  mask-image: url('icons/linkedin.svg');
}

.icon-email {
  -webkit-mask-image: url('icons/email.svg');
  mask-image: url('icons/email.svg');
}

.icon-sun {
  -webkit-mask-image: url('icons/sun.svg');
  mask-image: url('icons/sun.svg');
}

.icon-moon {
  -webkit-mask-image: url('icons/moon.svg');
  mask-image: url('icons/moon.svg');
}

.icon-music {
  -webkit-mask-image: url('icons/music.svg');
  mask-image: url('icons/music.svg');
}

.icon-spotify {
  -webkit-mask-image: url('icons/spotify.svg');
  mask-image: url('icons/spotify.svg');
}