:root {
  --color-bg: #0a0a0a;
  --color-bg-alt: #131313;
  --color-surface: #181818;
  --color-border: #2e2a20;
  --color-text: #f5f5f0;
  --color-text-muted: #a8a49a;
  --color-accent: #d4af37;
  --color-accent-strong: #e8c968;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 960px;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

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

a:hover {
  color: var(--color-accent-strong);
  text-decoration: underline;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.nav-brand:hover {
  text-decoration: none;
  color: var(--color-accent);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
  text-decoration: none;
}

.nav-login {
  padding: 8px 16px;
  font-size: 0.9rem;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  padding: 6px 10px;
  cursor: pointer;
}

/* Main sections */
main {
  padding: 64px 0 96px;
}

.hero {
  padding: 40px 0 24px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.hero .tagline {
  color: var(--color-accent);
  font-weight: 600;
  margin: 0 0 20px;
}

.hero p.lede {
  color: var(--color-text-muted);
  max-width: 640px;
  font-size: 1.05rem;
}

.button-row {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--color-accent);
  color: #0a0a0a;
}

.btn-primary:hover {
  background: var(--color-accent-strong);
  text-decoration: none;
  color: #0a0a0a;
}

.btn-secondary {
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  text-decoration: none;
  color: var(--color-text);
}

section {
  margin-top: 72px;
}

section h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

section .section-intro {
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

/* Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.card p {
  color: var(--color-text-muted);
  margin: 0 0 16px;
  font-size: 0.95rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tag {
  font-size: 0.75rem;
  color: var(--color-accent);
  background: rgba(212, 175, 55, 0.12);
  border: 1px solid rgba(212, 175, 55, 0.3);
  padding: 3px 10px;
  border-radius: 999px;
}

.card-links {
  display: flex;
  gap: 16px;
  font-size: 0.9rem;
}

/* Resume */
.timeline-item {
  border-left: 2px solid var(--color-border);
  padding-left: 20px;
  margin-bottom: 32px;
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
}

.timeline-item .meta {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin: 2px 0 10px;
}

.timeline-item h3 {
  margin: 0;
  font-size: 1.05rem;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
}

@media (max-width: 720px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.form-field {
  margin-bottom: 18px;
}

.form-field label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--color-text-muted);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.95rem;
}

.form-field textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-info-item {
  margin-bottom: 20px;
}

.contact-info-item .label {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: 4px;
}

/* Login / Members */
.auth-card {
  max-width: 420px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
}

.auth-error {
  color: #f87171;
  font-size: 0.9rem;
  margin-top: 4px;
  min-height: 1.2em;
}

.auth-success {
  color: var(--color-accent);
  font-size: 0.9rem;
  margin-top: 4px;
  min-height: 1.2em;
}

.auth-hint {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-top: 20px;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
}

.member-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 32px;
}

.member-banner span {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.btn-link {
  background: none;
  border: none;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0;
}

.btn-link:hover {
  color: var(--color-accent-strong);
  text-decoration: underline;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (max-width: 640px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav-right {
    gap: 12px;
  }

  .nav-login {
    padding: 6px 12px;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    display: none;
  }

  .nav-links.open {
    display: flex;
  }
}