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

:root {
  --bg: #0b0e14;
  --sb-bg: #0d1118;
  --card: #111620;
  --border: #1e2636;
  --border2: #2a3548;
  --cyan: #00d4ff;
  --cyan-dim: rgba(0, 212, 255, 0.18);
  --cyan-glow: rgba(0, 212, 255, 0.08);
  --green: #00ff99;
  --purple: #c084fc;
  --amber: #ffbb44;
  --text: #d8e4f0;
  --muted: #5a7090;
  --muted2: #3a4d62;
  --accent: #f5c84b;
  --sidebar-w: 320px;
}

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

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
  z-index: 0;
}

/* ── LAYOUT ── */
.container {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  gap: 24px;
  padding: 24px;
  position: relative;
  z-index: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

/* ── SIDEBAR ── */
aside.sidebar {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  height: fit-content;
  position: sticky;
  top: 24px;
  border: 1px solid var(--border);
}

.sb-sys-label {
  font-size: 12px; /* 10 × 1.20 */
  letter-spacing: 4px;
  text-transform: uppercase;
  color: rgba(0, 212, 255, 0.35);
}

.avatar-wrap {
    width: 118px;
    height: 118px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border2);
    background: var(--card);
    position: relative;
    flex-shrink: 0;
    margin: 0 auto;
}

.avatar-wrap::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), var(--purple), transparent);
    background-size: 200% 100%;
    animation: scanflow 3s linear infinite;
}

@keyframes scanflow {
    0% { background-position: 100% 0 }
    100% { background-position: -100% 0 }
}

.avatar-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sb-name {
    font-family: 'Syne', sans-serif;
    font-size: 1.5rem; /* 1.25 × 1.20 */
    font-weight: 800;
    color: #e8f4ff;
    text-align: center;
    margin-top: 16px;
    letter-spacing: -0.01em;
}

.sb-role {
    font-size: 13px; /* 11 × 1.20 */
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--cyan);
    opacity: 0.65;
    text-align: center;
    margin-top: 6px;
}

.sb-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border2), transparent);
  flex-shrink: 0;
}

.sb-section-label {
  font-size: 12px; /* 10 × 1.20 */
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(0, 212, 255, 0.35);
}

.contact-list {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
  list-style: none;
}

.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 10px;
  transition: border-color 0.2s;
}

.contact-list li:hover {
  border-color: var(--border2);
}

.c-icon {
  color: var(--muted);
  flex-shrink: 0;
  margin-top: 1px;
}

.c-icon svg {
  width: 16px; /* 13 × 1.20 */
  height: 16px;
}

.c-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.c-label {
  font-size: 11px; /* 9 × 1.20 */
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted);
}

.c-value {
  font-size: 14px; /* 12 × 1.20 */
  color: var(--text);
  line-height: 1.5;
  word-break: break-all;
}

.social-row {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.social-btn {
  width: 100%;
  height: 38px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.social-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.15);
}

.social-btn svg {
  width: 17px; /* 14 × 1.20 */
  height: 17px;
}

/* ── MAIN ── */
main {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
}

/* NAV */
nav.nav {
  display: flex;
  justify-content: flex-end;
  gap: 28px;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
}

nav.nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 13px; /* 11 × 1.20 */
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  padding-bottom: 16px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

nav.nav a:hover {
  color: var(--cyan);
}

nav.nav a.active {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* SECTIONS */
section {
  margin-bottom: 48px;
  animation: fadeUp 0.4s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.section-title,
h2 {
  font-size: 13px; /* 11 × 1.20 */
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::after,
h2::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border2), transparent);
}

.about-text {
  font-size: 16px; /* 13.5 × 1.20 */
  line-height: 1.95;
  color: #7a96b4;
  margin-bottom: 12px;
}

/* TECH GRID */
.tech-grid {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  position: relative;
  overflow: hidden;
}

.tech-grid::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--purple), transparent);
  background-size: 200% 100%;
  animation: scanflow 4s linear infinite;
}

.tech-icon {
  width: 60px;
  height: 60px;
  background: #0d1420;
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
  cursor: default;
}

.tech-icon:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.15);
  transform: translateY(-2px);
}

.tech-icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.tech-icon .ti-text {
  font-size: 13px; /* 11 × 1.20 */
  font-weight: 700;
  color: var(--cyan);
}

/* SPEC CARDS */
.spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.spec-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}

.spec-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 2px;
  background: var(--cyan);
  opacity: 0;
  transition: opacity 0.2s;
}

.spec-card:hover {
  border-color: var(--border2);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.06);
}

.spec-card:hover::before {
  opacity: 0.6;
}

.spec-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.spec-icon {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  background: #0a1020;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px; /* 14 × 1.20 */
  flex-shrink: 0;
}

.spec-card h3 {
  font-size: 16px; /* 13 × 1.20 */
  font-weight: 700;
  color: #c8dcf0;
}

.spec-card p {
  font-size: 14px; /* 12 × 1.20 */
  color: var(--muted);
  line-height: 1.7;
}

/* SCROLLBAR */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 2px; }

/* RESPONSIVE */
@media (max-width: 800px) {
  .container {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  aside.sidebar {
    position: relative;
    top: unset;
  }

  .spec-grid {
    grid-template-columns: 1fr;
  }

  nav.nav {
    justify-content: flex-start;
    overflow-x: auto;
    gap: 16px;
  }
}

.doc-container {
  display: flex;
  justify-content: center; /* center horizontally */
  align-items: center;     /* center vertically if needed */
  width: 100%;
}

.doc-container img {
  max-width: 100%;
  width: 100%;
  height: auto;
}