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

:root {
  --bg:        #f0f2f5;
  --surface:   #ffffff;
  --border:    #e4e7ec;
  --primary:   #3b82f6;
  --primary-l: #eff6ff;
  --text:      #1a1a2e;
  --muted:     #6b7280;
  --radius:    12px;
  --shadow:    0 2px 12px rgba(0,0,0,0.07);
  --tr:        0.22s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Be Vietnam Pro', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  gap: 24px;
  padding: 24px;
  align-items: flex-start;
}

/* ========== SIDEBAR ========== */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 28px 20px 24px;
  box-shadow: var(--shadow);
  position: sticky;
  top: 24px;
}

/* Avatar */
.avatar-wrap { display: flex; flex-direction: column; align-items: center; margin-bottom: 14px; }

.avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  box-shadow: 0 4px 16px rgba(99,102,241,0.3);
}

.status-dot {
  font-size: 0.72rem;
  color: #22c55e;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  padding: 2px 10px;
  border-radius: 100px;
}

.profile-name {
  text-align: center;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.profile-role {
  text-align: center;
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 6px;
}

.profile-school {
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 18px 0;
}

.sidebar-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

/* Contact list */
.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
}

.c-icon { font-size: 0.85rem; }

.contact-list a {
  color: var(--text);
  text-decoration: none;
  word-break: break-all;
  transition: color var(--tr);
}
.contact-list a:hover { color: var(--primary); }

/* Social list */
.social-list { list-style: none; display: flex; flex-direction: column; gap: 6px; }

.social-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.83rem;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--tr), color var(--tr), transform var(--tr);
  color: var(--text);
}
.social-link:hover { transform: translateX(3px); }

.social-link.fb { background: #f0f4ff; }
.social-link.fb:hover { background: #1877f2; color: #fff; }

.social-link.yt { background: #fff5f5; }
.social-link.yt:hover { background: #ff0000; color: #fff; }

.social-link.tt { background: #f5f5f5; }
.social-link.tt:hover { background: #010101; color: #fff; }

/* ========== MAIN ========== */
.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ========== TABS ========== */
.tab-nav {
  display: flex;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px;
  box-shadow: var(--shadow);
}

.tab-btn {
  flex: 1;
  padding: 9px 16px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--tr), color var(--tr);
}
.tab-btn:hover { background: var(--bg); color: var(--text); }
.tab-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(59,130,246,0.3);
}

/* Tab panes */
.tab-pane {
  display: none;
  flex-direction: column;
  gap: 16px;
  animation: fadeIn 0.25s ease;
}
.tab-pane.active { display: flex; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ========== CARD ========== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

/* Info grid */
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--bg);
  border-radius: 8px;
  padding: 10px 14px;
}

.info-lbl {
  font-size: 0.7rem;
  color: var(--muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ========== SKILLS ========== */
.skill-list { display: flex; flex-direction: column; gap: 14px; }

.skill-row { display: flex; flex-direction: column; gap: 5px; }

.skill-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.83rem;
  font-weight: 500;
}

.skill-pct { color: var(--muted); font-size: 0.78rem; }

.skill-bar {
  height: 7px;
  background: var(--bg);
  border-radius: 100px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.skill-fill {
  height: 100%;
  width: var(--w);
  background: var(--clr);
  border-radius: 100px;
  transform-origin: left;
  animation: growBar 0.9s cubic-bezier(0.4,0,0.2,1) both;
}

@keyframes growBar {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* Badge wrap */
.badge-wrap { display: flex; flex-wrap: wrap; gap: 8px; }

.badge {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.76rem;
  font-weight: 600;
  background: color-mix(in srgb, var(--bc) 12%, white);
  color: color-mix(in srgb, var(--bc) 80%, #000);
  border: 1px solid color-mix(in srgb, var(--bc) 25%, white);
}

/* ========== TOOLS ========== */
.tools-note {
  font-size: 0.85rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 18px;
  box-shadow: var(--shadow);
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: box-shadow var(--tr), transform var(--tr);
}
.tool-card:hover {
  box-shadow: 0 6px 24px rgba(0,0,0,0.1);
  transform: translateY(-2px);
}

.tool-top {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tool-icon {
  font-size: 1.6rem;
  width: 48px; height: 48px;
  background: var(--bg);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.tool-info { flex: 1; }
.tool-name  { font-size: 1rem; font-weight: 700; }
.tool-type  { font-size: 0.78rem; color: var(--muted); }

.tool-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
}
.tool-badge.green { background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }
.tool-badge.blue  { background: #eff6ff; color: #2563eb; border: 1px solid #bfdbfe; }

.tool-desc { font-size: 0.85rem; color: var(--muted); }

.tool-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tool-tags span {
  background: var(--primary-l);
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid #bfdbfe;
}

.toggle-btn {
  align-self: flex-start;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 14px;
  font-family: inherit;
  font-size: 0.78rem;
  color: var(--muted);
  cursor: pointer;
  transition: background var(--tr), color var(--tr);
}
.toggle-btn:hover { background: var(--bg); color: var(--text); }
.toggle-btn.open  { color: var(--primary); border-color: var(--primary); }

.tool-detail {
  display: none;
  background: var(--bg);
  border-radius: 8px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  animation: fadeIn 0.2s ease;
}
.tool-detail.show { display: block; }

.tool-detail ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.tool-detail li { font-size: 0.84rem; }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  body { flex-direction: column; padding: 16px; gap: 16px; }
  .sidebar { width: 100%; position: static; }
  .info-grid { grid-template-columns: 1fr; }
  .tab-btn { font-size: 0.78rem; padding: 8px 10px; }
}