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

:root {
  --navy: #1A2332;
  --navy-light: #243347;
  --navy-lighter: #2e3f57;
  --blue: #4A6FA5;
  --blue-light: #5a82bb;
  --blue-glow: rgba(74, 111, 165, 0.25);
  --text-primary: #e8edf4;
  --text-secondary: #8fa3bc;
  --text-muted: #5c7494;
  --border: rgba(74, 111, 165, 0.2);
  --card-bg: rgba(255, 255, 255, 0.03);
  --sidebar-width: 280px;
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: #111c29;
  color: var(--text-primary);
  line-height: 1.65;
  min-height: 100vh;
}

/* ─── LAYOUT ─────────────────────────────────── */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ─── SIDEBAR ────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--navy);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.sidebar::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--blue), transparent);
  opacity: 0.5;
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 48px 24px;
  height: 100%;
}

.avatar-wrap {
  margin-bottom: 20px;
  position: relative;
}

.avatar-wrap::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: conic-gradient(var(--blue), var(--navy-lighter), var(--blue));
  z-index: -1;
  animation: spin 8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  display: block;
  position: relative;
}

.name {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  letter-spacing: 0.3px;
}

.tagline {
  font-size: 13px;
  color: var(--blue-light);
  text-align: center;
  margin-top: 6px;
  margin-bottom: 40px;
  font-weight: 400;
}

/* NAV */
.nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 12px 18px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
  letter-spacing: 0.2px;
}

.nav-link::before {
  content: '';
  width: 3px;
  height: 0;
  background: var(--blue);
  border-radius: 0 3px 3px 0;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  transition: height var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(74, 111, 165, 0.12);
}

.nav-link:hover::before,
.nav-link.active::before {
  height: 60%;
}

.nav-link.active {
  color: #fff;
}

/* SIDEBAR FOOTER */
.sidebar-footer {
  margin-top: auto;
  text-align: center;
  padding-top: 32px;
}

.social-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 16px;
}

.social-link {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.social-link svg {
  width: 16px;
  height: 16px;
}

.social-link:hover {
  color: var(--blue-light);
  border-color: var(--blue);
  background: var(--blue-glow);
  transform: translateY(-2px);
}

.location {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
  justify-content: center;
}

.location svg {
  color: var(--blue);
}

/* ─── MAIN CONTENT ───────────────────────────── */
.content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 0;
}

/* ─── SECTIONS ───────────────────────────────── */
.section {
  padding: 80px 64px;
  border-bottom: 1px solid var(--border);
  max-width: 900px;
}

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

.section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
}

.section-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
  letter-spacing: 1px;
}

.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--border), transparent);
  max-width: 300px;
}

/* ─── ABOUT ──────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 15px;
}

.about-text p.lead {
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.7;
}

.skills-wrap h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 20px;
}

.skills {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.skill-name {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.skill-bar {
  height: 4px;
  background: var(--navy-lighter);
  border-radius: 4px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(to right, var(--blue), var(--blue-light));
  border-radius: 4px;
  width: 0;
  animation: fillBar 1.2s ease forwards;
  animation-delay: 0.3s;
}

@keyframes fillBar {
  from { width: 0; }
}

/* ─── LANGUAGES ──────────────────────────────── */
.languages-wrap {
  margin-top: 28px;
}

.languages-wrap h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 14px;
}

.lang-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lang-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.lang-name {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.lang-level {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
  letter-spacing: 0.3px;
}

.lang-fluent {
  color: var(--blue-light);
  background: rgba(74, 111, 165, 0.15);
  border: 1px solid rgba(74, 111, 165, 0.3);
}

.lang-good {
  color: #7ab3d4;
  background: rgba(122, 179, 212, 0.1);
  border: 1px solid rgba(122, 179, 212, 0.25);
}

.lang-basic {
  color: var(--text-muted);
  background: rgba(92, 116, 148, 0.1);
  border: 1px solid rgba(92, 116, 148, 0.2);
}

/* ─── TIMELINE ───────────────────────────────── */
.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--blue), var(--navy-lighter) 80%, transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -20px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--blue);
  border: 2px solid var(--navy);
  box-shadow: 0 0 12px var(--blue-glow);
  z-index: 1;
}

.timeline-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.timeline-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--blue), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.timeline-card:hover {
  border-color: rgba(74, 111, 165, 0.4);
  background: rgba(74, 111, 165, 0.06);
  transform: translateX(4px);
}

.timeline-card:hover::before {
  opacity: 1;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 12px;
}

.job-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.company {
  font-size: 13px;
  color: var(--blue-light);
  font-weight: 500;
}

.date-badge {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--navy-lighter);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
  font-weight: 500;
}

.job-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

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

.tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--blue-light);
  background: rgba(74, 111, 165, 0.12);
  border: 1px solid rgba(74, 111, 165, 0.25);
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.3px;
}

/* ─── CONTACT ────────────────────────────────── */
.contact-wrap {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.contact-intro p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 540px;
}

/* FORM */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
}

.form-group input,
.form-group textarea {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: all var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  background: var(--navy-lighter);
  box-shadow: 0 0 0 3px var(--blue-glow);
}

.btn-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 14px 28px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  align-self: flex-start;
}

.btn-submit:hover {
  background: var(--blue-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(74, 111, 165, 0.35);
}

.btn-submit:active {
  transform: translateY(0);
}

.form-feedback {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
}

.form-feedback.success {
  background: rgba(74, 165, 120, 0.12);
  border: 1px solid rgba(74, 165, 120, 0.3);
  color: #5bbd8d;
}

/* CONTACT CARDS */
.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.contact-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: rgba(74, 111, 165, 0.4);
  background: rgba(74, 111, 165, 0.06);
}

.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(74, 111, 165, 0.15);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--blue-light);
}

.contact-icon svg {
  width: 18px;
  height: 18px;
}

.contact-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 2px;
}

.contact-value {
  font-size: 13px;
  color: var(--blue-light);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.contact-value:hover {
  color: #fff;
}

/* ─── LANGUAGE SWITCHER ──────────────────────── */
.lang-switcher {
  position: fixed;
  top: 20px;
  right: 24px;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 4px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(8px);
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.8px;
  padding: 5px 12px;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition);
}

.lang-btn:hover {
  color: var(--text-secondary);
}

.lang-btn.active {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 2px 8px rgba(74, 111, 165, 0.4);
}

.lang-sep {
  width: 1px;
  height: 14px;
  background: var(--border);
  flex-shrink: 0;
}

/* ─── SCROLLBAR ──────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--navy);
}
::-webkit-scrollbar-thumb {
  background: var(--navy-lighter);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--blue);
}

/* ─── RESPONSIVE ─────────────────────────────── */
@media (max-width: 900px) {
  .sidebar {
    width: 100%;
    height: auto;
    position: relative;
    flex-direction: row;
  }
  .sidebar-inner {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 24px;
    gap: 20px;
    align-items: center;
  }
  .avatar-wrap { margin-bottom: 0; }
  .tagline { margin-bottom: 0; }
  .sidebar-footer { margin-top: 0; padding-top: 0; }
  .content { margin-left: 0; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 48px 32px; }
  .contact-cards { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .section { padding: 40px 20px; }
  .layout { flex-direction: column; }
}