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

:root {
  --bg: #0f0f0f;
  --surface: #1a1a1a;
  --border: #2a2a2a;
  --text: #e8e8e8;
  --muted: #888;
  --accent: #7c9ef8;
  --accent-dim: #4a6fd4;
  --max-width: 720px;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  font-size: 15px;
  line-height: 1.7;
}

/* Nav */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  gap: 2rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

nav a:hover,
nav a.active {
  color: var(--accent);
}

#dev-mode-toggle {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.85rem;
  padding: 0.15rem 0.5rem;
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: color 0.2s, border-color 0.2s;
}

#dev-mode-toggle:hover,
body.dev-mode #dev-mode-toggle {
  color: var(--accent);
  border-color: var(--accent-dim);
}

/* Main layout */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border);
}

section:last-child {
  border-bottom: none;
}

/* Hero */
#hero {
  padding-top: 6rem;
  padding-bottom: 5rem;
}

#hero h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.tagline {
  margin-top: 0.5rem;
  font-size: 1rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

/* Section headings */
h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

/* About */
#about p {
  color: var(--text);
  max-width: 55ch;
}

/* Projects */
.section-note {
  font-size: 0.8rem;
  color: var(--muted);
  border-left: 2px solid var(--border);
  padding-left: 0.75rem;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.project-grid {
  display: grid;
  gap: 1rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  transition: border-color 0.2s;
}

.project-card:hover {
  border-color: var(--accent-dim);
}

.project-card h3 {
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.project-card p {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.project-links {
  display: flex;
  gap: 1rem;
}

.project-links a {
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid var(--accent-dim);
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  transition: background 0.2s, color 0.2s;
}

.project-links a:hover {
  background: var(--accent-dim);
  color: #fff;
}

/* Experience */
.experience-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.experience-item {
  border-left: 2px solid var(--border);
  padding-left: 1.25rem;
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.2rem;
}

.experience-role {
  font-size: 0.95rem;
  color: var(--text);
}

.experience-date {
  font-size: 0.78rem;
  color: var(--muted);
}

.experience-company {
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 0.4rem;
  letter-spacing: 0.03em;
}

.experience-item p {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Contact */
#contact p {
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.contact-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.contact-links a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.contact-links a:hover {
  color: #fff;
}

/* Footer */
footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  color: var(--muted);
  font-size: 0.8rem;
}

/* Terminal */
#terminal {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  width: min(720px, 100vw);
  height: 380px;
  background: #0a0a0a;
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
              width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              height 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              border-radius 0.3s;
  box-shadow: 0 -8px 40px rgba(0,0,0,0.6);
}

#terminal.open {
  transform: translateX(-50%) translateY(0);
}

body.dev-mode #terminal {
  width: 100vw;
  height: 100vh;
  border-radius: 0;
  border: none;
  transform: translateX(-50%) translateY(0);
}

body.dev-mode header,
body.dev-mode main,
body.dev-mode footer {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

header,
main,
footer {
  transition: opacity 0.2s;
}

#terminal-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#terminal-title {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

#terminal-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0.1rem 0.3rem;
  transition: color 0.15s;
}

#terminal-close:hover {
  color: var(--text);
}

#terminal-output {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 1rem;
  font-size: 0.82rem;
  line-height: 1.6;
}

#terminal-output::-webkit-scrollbar {
  width: 4px;
}
#terminal-output::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

.t-line {
  color: var(--muted);
  white-space: pre-wrap;
}

.t-cmd {
  color: var(--text);
  margin-top: 0.25rem;
}

.t-prompt {
  color: var(--accent-dim);
  margin-right: 0.5rem;
  user-select: none;
}

.t-accent {
  color: var(--accent);
}

.t-line a {
  color: var(--accent);
  text-decoration: none;
}

.t-line a:hover {
  text-decoration: underline;
}

#terminal-input-row {
  display: flex;
  align-items: center;
  padding: 0.6rem 1rem;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

#terminal-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: inherit;
  font-size: 0.82rem;
  caret-color: var(--accent);
}

.footer-hint {
  color: var(--muted);
  font-size: 0.75rem;
}

kbd {
  font-family: inherit;
  font-size: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.1rem 0.35rem;
  color: var(--text);
}

/* Responsive */
@media (max-width: 480px) {
  nav {
    gap: 1.25rem;
  }

  .contact-links {
    flex-direction: column;
    gap: 0.75rem;
  }
}