/* ===================== RESET & BASE ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0f0f1a;
  --surface:   #1a1a2e;
  --surface2:  #16213e;
  --border:    #2a2a4a;
  --accent:    #7c6af7;
  --accent2:   #56cfb2;
  --text:      #e2e2f0;
  --muted:     #8888aa;
  --radius:    14px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent2); }

/* ===================== HEADER ===================== */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.avatar-wrap { display: flex; align-items: center; gap: 1rem; }

.back-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: .95rem;
  transition: color .2s, border-color .2s;
  flex-shrink: 0;
}

.back-btn:hover {
  color: var(--accent2);
  border-color: var(--accent2);
}

.avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--accent);
}

.header-info h1 { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.3px; }
.header-info .tagline { font-size: .85rem; color: var(--muted); }

/* ===================== TOGGLE ===================== */
.view-toggle {
  display: flex;
  gap: .5rem;
  background: var(--bg);
  padding: .35rem;
  border-radius: 50px;
  border: 1px solid var(--border);
}

.toggle-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  padding: .45rem 1.1rem;
  border-radius: 50px;
  cursor: pointer;
  font-size: .9rem;
  font-weight: 500;
  transition: background .2s, color .2s;
  display: flex;
  align-items: center;
  gap: .4rem;
}

.toggle-btn.active {
  background: var(--accent);
  color: #fff;
}

.toggle-btn:hover:not(.active) {
  color: var(--text);
  background: var(--border);
}

/* ===================== VIEWS ===================== */
.view { display: none; }
.view.active { display: block; }

/* ===================== LAYOUT ===================== */
main {
  max-width: 900px;
  margin: 2.5rem auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ===================== CARDS ===================== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 2rem;
  box-shadow: var(--shadow);
}

.card h2 {
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--accent2);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: .6rem;
}

.card h2 i { font-size: .95rem; }

/* ===================== EDU ITEM ===================== */
.edu-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.edu-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
  color: var(--accent);
}

.edu-item strong { font-size: 1rem; display: block; }
.edu-item p { font-size: .875rem; color: var(--muted); margin-top: .2rem; }

/* ===================== CERT LIST ===================== */
.cert-list { list-style: none; display: flex; flex-direction: column; gap: .7rem; }

.cert-list li {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .95rem;
  padding: .5rem .8rem;
  background: var(--bg);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.cert-list li i { color: var(--accent); width: 18px; text-align: center; }

/* ===================== TWO-COL (big link btns) ===================== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 1.2rem;
}

.big-link-btn {
  display: flex;
  align-items: center;
  gap: .9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.2rem;
  color: var(--text);
  font-weight: 600;
  font-size: .95rem;
  transition: border-color .2s, background .2s;
}

.big-link-btn:hover {
  border-color: var(--accent);
  background: var(--surface2);
  color: var(--text);
}

.big-link-btn i:first-child { font-size: 1.3rem; color: var(--accent); }
.big-link-btn .arrow { margin-left: auto; color: var(--muted); font-size: .85rem; }

/* ===================== COMPANY LIST ===================== */
.company-list { list-style: none; display: flex; flex-direction: column; gap: .6rem; }

.company-link {
  display: flex;
  align-items: center;
  gap: .9rem;
  padding: .6rem .8rem;
  border-radius: 8px;
  border: 1px solid transparent;
  color: var(--text);
  transition: background .2s, border-color .2s;
}

.company-link:hover {
  background: var(--bg);
  border-color: var(--border);
  color: var(--text);
}

.company-link img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: contain;
  background: #fff;
  padding: 3px;
  flex-shrink: 0;
}

.company-info {
  display: flex;
  flex-direction: column;
  gap: .1rem;
}

.company-name {
  font-size: .95rem;
  font-weight: 600;
  color: var(--text);
}

.company-role {
  font-size: .85rem;
  color: var(--accent2);
}

.company-team {
  font-size: .75rem;
  color: var(--muted);
  letter-spacing: .03em;
}

/* ===================== LINK LIST ===================== */
.link-list { list-style: none; display: flex; flex-direction: column; gap: .55rem; }

.link-list li a {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .95rem;
  padding: .4rem .6rem;
  border-radius: 6px;
  transition: background .2s;
}

.link-list li a:hover { background: var(--bg); color: var(--accent2); }
.link-list li a i { font-size: .8rem; color: var(--muted); }

/* ===================== FLAG LIST ===================== */
.flag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.flag-list li a {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: .35rem .85rem;
  font-size: .9rem;
  color: var(--text);
  transition: border-color .2s, background .2s;
}

.flag-list li a:hover {
  border-color: var(--accent2);
  background: var(--surface2);
  color: var(--text);
}

/* ===================== STATE LIST ===================== */
.state-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.state-list li a {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: .35rem .85rem;
  font-size: .9rem;
  color: var(--text);
  transition: border-color .2s, background .2s;
}

.state-list li a:hover {
  border-color: var(--accent2);
  background: var(--surface2);
  color: var(--text);
}

.state-badge {
  background: var(--accent);
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  padding: .15rem .45rem;
  border-radius: 20px;
  line-height: 1.4;
}

/* ===================== TECH STACK ===================== */
.stack-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.stack-group { display: flex; flex-direction: column; gap: .4rem; }

.stack-label {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--muted);
}

.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}

.stack-tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .3rem .7rem;
  font-size: .82rem;
  color: var(--text);
  transition: border-color .2s, color .2s;
  cursor: default;
}

.stack-tag:hover {
  border-color: var(--accent);
  color: var(--accent2);
}

.stack-tag i { color: var(--accent); font-size: .85rem; }

/* ===================== CAREER TRACKS ===================== */
.career-track {
  margin-bottom: 1.4rem;
}

.career-track:last-child {
  margin-bottom: 0;
}

.career-label {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: .4rem;
  margin-bottom: .6rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--border);
}

/* ===================== CAREER COLUMNS ===================== */
.career-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .career-columns { grid-template-columns: 1fr; }
}

/* ===================== BOOK LANG COUNTER ===================== */
.book-lang-counter {
  display: flex;
  align-items: center;
  gap: .6rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.lang-count-total {
  font-size: .78rem;
  font-weight: 700;
  color: var(--accent2);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: .2rem .7rem;
}

.lang-count {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .78rem;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: .2rem .7rem;
}

/* ===================== BOOK GRID ===================== */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.2rem;
}

.book-category {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .9rem 1rem 1rem;
}

.cat-header {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--accent2);
  margin-bottom: .7rem;
  padding-bottom: .45rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: .45rem;
}

.book-category .link-list li a {
  font-size: .875rem;
  padding: .25rem .4rem;
}

.book-lang {
  font-size: .9rem;
  margin-right: .2rem;
  flex-shrink: 0;
}

.book-note {
  font-size: .72rem;
  color: var(--muted);
  font-style: italic;
  margin-left: .3rem;
}

/* ===================== FOOTER ===================== */
footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--muted);
  font-size: .85rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 640px) {
  header { padding: 1rem; }
  .header-inner { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .two-col { grid-template-columns: 1fr; }
  main { padding: 0 1rem; margin: 1.5rem auto; }
  .card { padding: 1.2rem 1.2rem; }
}