/* =============================================
   DESIGN TOKENS
   ============================================= */
:root {
  --bg-base:        #060608;
  --bg-primary:     #09090f;
  --bg-secondary:   #0d0d17;
  --bg-card:        #111120;
  --bg-card-hover:  #161628;

  --accent-cyan:    #00d4ff;
  --accent-purple:  #7c3aed;

  --text-primary:   #f0f2f5;
  --text-secondary: #8892a4;
  --text-muted:     #4b5563;

  --border:         rgba(255, 255, 255, 0.07);

  --sidebar-w:      230px;
  --radius:         10px;
  --transition:     all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  --glow-cyan:      0 0 20px rgba(0, 212, 255, 0.3), 0 0 40px rgba(0, 212, 255, 0.1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  overflow: hidden;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
img { max-width: 100%; display: block; }

/* =============================================
   SIDEBAR
   ============================================= */
.sidebar {
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--bg-base);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0; top: 0;
  z-index: 100;
  flex-shrink: 0;
}

.sidebar-brand {
  padding: 28px 20px 22px;
  border-bottom: 1px solid var(--border);
}

.brand-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.brand-role {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.67rem;
  color: var(--accent-cyan);
  margin-top: 6px;
  opacity: 0.85;
}

.sidebar-nav {
  flex: 1;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.side-btn {
  all: unset;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 12px;
  border-radius: var(--radius);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  width: 100%;
  border: 1px solid transparent;
}

.side-btn i {
  width: 18px;
  font-size: 0.8rem;
  opacity: 0.75;
  text-align: center;
  flex-shrink: 0;
}

.side-btn:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

.side-btn.active {
  background: rgba(0, 212, 255, 0.09);
  color: var(--accent-cyan);
  border-color: rgba(0, 212, 255, 0.18);
}

.side-btn.active i { opacity: 1; }

.side-btn.active::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 65%;
  background: var(--accent-cyan);
  border-radius: 0 2px 2px 0;
  box-shadow: var(--glow-cyan);
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 14px;
}

.sidebar-footer a {
  color: var(--text-muted);
  font-size: 1rem;
  transition: var(--transition);
}
.sidebar-footer a:hover { color: var(--accent-cyan); }

/* =============================================
   MAIN CONTENT
   ============================================= */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  height: 100vh;
  overflow-y: auto;
  scroll-behavior: smooth;
}

#page-content { min-height: 100vh; }

.page-enter {
  animation: pageEnter 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes pageEnter {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =============================================
   COMMON PAGE WRAPPER
   ============================================= */
.page-wrap {
  padding: 56px 60px;
  max-width: 960px;
}

.page-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 10px;
}

.page-heading {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 42px;
}

/* =============================================
   HERO / HOME
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 60px;
  position: relative;
  overflow: hidden;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
}
.hero-orb-1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.13), transparent 70%);
  top: -100px; right: -60px;
}
.hero-orb-2 {
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.09), transparent 70%);
  bottom: -40px; left: -40px;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 80px;
  width: 100%;
  max-width: 900px;
}

.hero-text { flex: 1; }

.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-eyebrow::before { content: '//'; opacity: 0.4; }

.hero-name {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 14px;
  background: linear-gradient(145deg, #f0f2f5 30%, #5a6578 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 22px;
  font-weight: 400;
}
.hero-subtitle strong { color: var(--accent-cyan); font-weight: 600; }

.hero-bio {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: 36px;
}

.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
}
.btn-cyan { background: var(--accent-cyan); color: #000; }
.btn-cyan:hover { background: #2ee0ff; box-shadow: var(--glow-cyan); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--text-primary); border-color: var(--border); }
.btn-outline:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); transform: translateY(-2px); }

.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 52px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}

.stat-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}
.stat-num em { color: var(--accent-cyan); font-style: normal; }
.stat-label { font-size: 0.72rem; color: var(--text-muted); margin-top: 5px; }

.hero-photo { flex-shrink: 0; }
.hero-photo img {
  width: 240px; height: 240px;
  object-fit: cover;
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow:
    0 0 0 4px rgba(0, 212, 255, 0.06),
    0 0 60px rgba(124, 58, 237, 0.12),
    0 20px 60px rgba(0, 0, 0, 0.5);
}

/* =============================================
   WORK TIMELINE
   ============================================= */
.timeline {
  position: relative;
  padding-left: 30px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 5px; top: 12px; bottom: 50px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent-cyan) 0%, rgba(0, 212, 255, 0.15) 70%, transparent 100%);
}

.timeline-item { position: relative; margin-bottom: 34px; }

.timeline-dot {
  position: absolute;
  left: -31px; top: 14px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}
.timeline-item:first-child .timeline-dot { background: var(--accent-cyan); }

.work-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
  transition: var(--transition);
}
.work-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  transform: translateY(-2px);
}

.work-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.work-company-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.work-logo {
  width: 38px; height: 38px;
  border-radius: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.work-logo img { width: 100%; height: 100%; object-fit: contain; }

.work-company { font-size: 1rem; font-weight: 600; color: var(--text-primary); }
.work-location { font-size: 0.74rem; color: var(--text-muted); margin-top: 2px; }

.work-period {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.07);
  border: 1px solid rgba(0, 212, 255, 0.18);
  padding: 4px 10px;
  border-radius: 100px;
  white-space: nowrap;
  flex-shrink: 0;
}

.work-role {
  font-size: 0.875rem;
  color: var(--accent-cyan);
  font-weight: 500;
  margin-bottom: 14px;
  opacity: 0.8;
}

.work-summary {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 14px;
}

.ach-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  margin-bottom: 10px;
}

.bullet-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.bullet-list li {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.65;
  padding-left: 18px;
  position: relative;
}
.bullet-list li::before {
  content: '▸';
  position: absolute; left: 0;
  color: var(--accent-cyan);
  font-size: 0.68rem; top: 3px;
}

.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.tag {
  font-size: 0.67rem;
  font-family: 'JetBrains Mono', monospace;
  padding: 3px 9px;
  border-radius: 100px;
  background: rgba(124, 58, 237, 0.1);
  color: #a78bfa;
  border: 1px solid rgba(124, 58, 237, 0.2);
}
.tag.cyan {
  background: rgba(0, 212, 255, 0.07);
  color: var(--accent-cyan);
  border-color: rgba(0, 212, 255, 0.18);
}

/* =============================================
   PROJECTS
   ============================================= */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(278px, 1fr));
  gap: 18px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.project-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.project-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  transform: translateY(-4px);
}
.project-card:hover::after { transform: scaleX(1); }

.proj-icon {
  width: 42px; height: 42px;
  border-radius: 9px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
  font-size: 1.1rem;
}
.proj-icon img { width: 100%; height: 100%; object-fit: contain; }

.proj-name { font-size: 0.95rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.proj-org {
  font-size: 0.69rem;
  font-family: 'JetBrains Mono', monospace;
  color: #a78bfa;
  margin-bottom: 10px;
  opacity: 0.85;
}
.proj-desc { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.65; flex: 1; }

.proj-links { display: flex; gap: 14px; margin-top: 16px; }
.proj-link {
  font-size: 0.78rem;
  color: var(--accent-cyan);
  display: flex; align-items: center; gap: 5px;
  transition: var(--transition);
}
.proj-link:hover { opacity: 0.7; }

.proj-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }

/* =============================================
   SKILLS
   ============================================= */
.skill-group { margin-bottom: 38px; }

.skill-group-title {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.skill-group-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }

.skill-chips { display: flex; flex-wrap: wrap; gap: 9px; }

.skill-chip {
  display: flex; align-items: center; gap: 7px;
  padding: 7px 13px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: var(--transition);
  cursor: default;
}
.skill-chip:hover {
  border-color: rgba(0, 212, 255, 0.25);
  background: var(--bg-card-hover);
}
.skill-chip img { width: 18px; height: 18px; object-fit: contain; }
.skill-chip span { font-size: 0.82rem; color: var(--text-secondary); font-weight: 500; }

/* =============================================
   EDUCATION
   ============================================= */
.edu-list { display: flex; flex-direction: column; gap: 18px; }

.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  transition: var(--transition);
}
.edu-card:hover { border-color: rgba(0, 212, 255, 0.2); transform: translateY(-2px); }

.edu-logo {
  width: 44px; height: 44px;
  border-radius: 9px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  overflow: hidden;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.edu-logo img { width: 100%; height: 100%; object-fit: contain; }

.edu-degree { font-size: 1rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.edu-school { font-size: 0.875rem; color: var(--accent-cyan); margin-bottom: 10px; }
.edu-meta { display: flex; gap: 18px; flex-wrap: wrap; }
.edu-meta-item {
  font-size: 0.76rem;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-muted);
  display: flex; align-items: center; gap: 5px;
}

/* =============================================
   CONTACT
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  margin-bottom: 40px;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: var(--transition);
}
.contact-card:hover { border-color: rgba(0, 212, 255, 0.25); transform: translateY(-2px); }

.contact-icon-wrap {
  width: 40px; height: 40px;
  border-radius: 9px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.15);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-cyan);
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-label { font-size: 0.69rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 3px; }
.contact-value { font-size: 0.875rem; color: var(--text-primary); font-weight: 500; }

/* =============================================
   RESUME
   ============================================= */
.resume-wrap {
  padding: 40px 60px;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.resume-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.resume-frame {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
}
.resume-frame embed,
.resume-frame iframe { width: 100%; height: 100%; }

/* =============================================
   SCROLLBAR
   ============================================= */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* =============================================
   MOBILE
   ============================================= */
@media (max-width: 768px) {
  html { height: 100%; overflow: hidden; }
  body {
    flex-direction: column;
    height: 100%;
    overflow: hidden;
  }

  /* ---- Bottom nav bar ---- */
  .sidebar {
    width: 100%;
    height: 62px;
    position: fixed; bottom: 0; top: auto;
    flex-direction: row;
    border-right: none;
    border-top: 1px solid var(--border);
    background: rgba(6, 6, 8, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 200;
  }

  .sidebar-brand, .sidebar-footer { display: none; }

  .sidebar-nav {
    flex-direction: row;
    padding: 0 2px;
    justify-content: space-around;
    align-items: stretch;
    width: 100%;
    gap: 0;
    overflow: hidden;
  }

  .side-btn {
    flex-direction: column;
    gap: 4px;
    padding: 8px 4px 6px;
    font-size: 0.56rem;
    min-width: 0;
    flex: 1;
    align-items: center;
    justify-content: center;
    border: none !important;
    border-radius: 0;
    letter-spacing: 0;
  }

  .side-btn i {
    font-size: 1.05rem;
    width: auto;
    opacity: 0.65;
  }

  .side-btn.active i { opacity: 1; }

  .side-btn.active {
    background: rgba(0, 212, 255, 0.07);
    color: var(--accent-cyan);
  }

  .side-btn.active::before {
    top: 0; bottom: auto; left: 50%;
    transform: translateX(-50%);
    width: 50%; height: 2px;
    border-radius: 0 0 3px 3px;
  }

  /* ---- Main content — must scroll ---- */
  .main-content {
    margin-left: 0;
    flex: none;
    width: 100%;
    height: 100%;
    overflow-y: scroll;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 62px;
  }

  /* ---- Prevent horizontal overflow everywhere ---- */
  .page-wrap,
  .timeline,
  .work-card,
  .work-header,
  .work-company-row { overflow-x: hidden; }

  .work-company,
  .work-role,
  .work-summary,
  .bullet-list li {
    word-break: break-word;
    overflow-wrap: break-word;
  }

  /* ---- Hero ---- */
  .hero {
    padding: 32px 20px 28px;
    min-height: auto;
    align-items: flex-start;
  }

  .hero-inner {
    flex-direction: row;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: nowrap;
  }

  .hero-text { flex: 1; min-width: 0; }

  .hero-photo { flex-shrink: 0; }
  .hero-photo img {
    width: 80px; height: 80px;
    border-radius: 12px;
    margin-top: 2px;
  }

  .hero-eyebrow { font-size: 0.72rem; margin-bottom: 10px; }
  .hero-name { font-size: clamp(1.7rem, 7vw, 2.2rem); }
  .hero-subtitle { font-size: 0.9rem; margin-bottom: 14px; }
  .hero-bio { font-size: 0.82rem; line-height: 1.7; margin-bottom: 22px; }

  .hero-cta { gap: 10px; }
  .btn { padding: 9px 16px; font-size: 0.8rem; }

  .hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 0;
    margin-top: 28px;
    padding-top: 22px;
  }

  .stat-num { font-size: 1.5rem; }
  .stat-label { font-size: 0.68rem; }

  /* ---- Pages ---- */
  .page-wrap { padding: 28px 20px 48px; }
  .page-heading { font-size: 1.6rem; margin-bottom: 28px; }

  /* ---- Work timeline ---- */
  .timeline { padding-left: 20px; overflow: visible; }
  .timeline::before { left: 3px; }
  .timeline-dot { left: -22px; width: 10px; height: 10px; top: 16px; }
  .timeline-item { margin-bottom: 24px; }
  .work-card { padding: 16px 14px; }
  .work-header { flex-direction: column; gap: 8px; align-items: flex-start; }
  .work-period { align-self: flex-start; font-size: 0.66rem; }
  .work-company { font-size: 0.9rem; }
  .work-role { font-size: 0.8rem; margin-bottom: 10px; }
  .work-summary { font-size: 0.8rem; }
  .tag-row { gap: 5px; margin-top: 14px; }
  .tag { font-size: 0.62rem; padding: 2px 7px; }

  /* ---- Projects ---- */
  .projects-grid { grid-template-columns: 1fr; }

  /* ---- Contact ---- */
  .contact-grid { grid-template-columns: 1fr; }

  /* ---- Education ---- */
  .edu-card { gap: 14px; padding: 18px 16px; }
  .edu-meta { gap: 10px; flex-wrap: wrap; }

  /* ---- Skills ---- */
  .skill-chips { gap: 7px; }
  .skill-chip { padding: 6px 10px; }

  /* ---- Resume ---- */
  .resume-wrap { padding: 20px 20px 28px; height: auto; }
}