@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ===== CSS Variables ===== */
:root {
  --bg: #060811;
  --bg-card: #0d1117;
  --border: rgba(255,255,255,0.07);
  --accent: #5b5fc7;
  --accent-light: rgba(91,95,199,0.15);
  --accent-glow: rgba(91,95,199,0.08);
  --text: #f0f2f8;
  --muted: #7a8099;
  --mono: 'Inter', monospace;
  --heading: 'Inter', sans-serif;
  --body: 'Inter', sans-serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===== Progress Bar ===== */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent);
  z-index: 200;
  transition: width 0.1s linear;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2.5rem;
  background: rgba(6, 8, 17, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transform: translateY(-100%);
  opacity: 0;
  animation: navSlideIn 0.7s cubic-bezier(0.16,1,0.3,1) 0.2s forwards;
}

@keyframes navSlideIn {
  to { transform: translateY(0); opacity: 1; }
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-avatar {
  width: 2.25rem;
  height: 2.25rem;
  background: var(--accent);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
}

.nav-name {
  font-family: var(--heading);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.02em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

.nav-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--muted);
  font-family: var(--body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
}

/* ===== Mobile Menu ===== */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 99;
  background: var(--bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}
.mobile-menu a {
  font-family: var(--heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--muted);
  transition: color 0.2s;
}
.mobile-menu a:hover { color: var(--text); }

/* ===== Section Shared ===== */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2.5rem;
}

.section-header {
  margin-bottom: 4rem;
}

.section-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--heading);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--text);
}

/* ===== Reveal Animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  animation: revealUp 0.9s cubic-bezier(0.16,1,0.3,1) forwards;
}
.delay-1 { animation-delay: 0.18s; }
.delay-2 { animation-delay: 0.36s; }
.delay-3 { animation-delay: 0.54s; }

@keyframes revealUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal-scroll {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1);
}
.reveal-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-scroll.delay-1 { transition-delay: 0.12s; }
.reveal-scroll.delay-2 { transition-delay: 0.24s; }

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 2.5rem 5rem;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
}

.hero-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 1.5rem;
}

.hero-name {
  font-family: var(--heading);
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.95;
  background: linear-gradient(135deg, #f0f2f8 30%, #4a4e6a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 2rem;
}

.hero-bio {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 480px;
  font-weight: 300;
  margin-bottom: 2.5rem;
}

.hero-cta { display: flex; gap: 1rem; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  background: var(--text);
  color: var(--bg);
  font-family: var(--heading);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 0.75rem;
  transition: background 0.2s, transform 0.2s;
}
.btn-primary:hover {
  background: #d8dae8;
  transform: translateY(-1px);
}
.btn-primary svg { transition: transform 0.2s; }
.btn-primary:hover svg { transform: translate(2px, 2px); }

/* Hero Visual */
.hero-visual {
  position: relative;
  width: 320px;
  height: 320px;
  flex-shrink: 0;
}

.hero-card {
  position: relative;
  width: 100%;
  height: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transform: rotate(3deg);
  box-shadow: 0 40px 80px rgba(0,0,0,0.5);
}

.hero-card-text {
  font-family: var(--heading);
  font-size: 5rem;
  font-weight: 800;
  color: rgba(255,255,255,0.04);
  letter-spacing: -0.06em;
  text-transform: uppercase;
  user-select: none;
}

.hero-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(91,95,199,0.12) 0%, transparent 60%);
}

.hero-glow {
  position: absolute;
  inset: -30%;
  background: radial-gradient(circle, var(--accent-light) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

/* Background decorative glows */
.bg-glow {
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}
.bg-glow-tr {
  top: -10%;
  right: -10%;
  background: rgba(91,95,199,0.08);
}
.bg-glow-bl {
  bottom: -10%;
  left: -10%;
  background: rgba(60,100,180,0.07);
}

/* ===== Experience ===== */
.experience {
  padding: 7rem 0;
}

.exp-card {
  background: rgba(13,17,23,0.5);
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  padding: 3rem;
}

.exp-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.exp-period {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.5rem;
}

.exp-company {
  font-family: var(--heading);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
}

.exp-role {
  color: var(--muted);
  font-size: 1rem;
  margin-top: 0.25rem;
}

.exp-badge {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  background: var(--accent-light);
  border: 1px solid rgba(91,95,199,0.2);
  color: #8b8fdf;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

.exp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.timeline-block {
  position: relative;
  padding-left: 2rem;
  border-left: 2px solid var(--border);
}

.timeline-dot {
  position: absolute;
  left: -9px;
  top: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 4px solid var(--bg);
}

.block-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(240,242,248,0.4);
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.resp-list li {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
  padding-left: 1.25rem;
  position: relative;
  margin-bottom: 0.75rem;
}
.resp-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--accent);
}

.exp-projects { display: flex; flex-direction: column; gap: 1.25rem; }

.project-card {
  padding: 1.5rem;
  background: rgba(6,8,17,0.6);
  border: 1px solid var(--border);
  border-radius: 1rem;
  transition: background 0.2s, border-color 0.2s;
  cursor: default;
}
.project-card:hover {
  background: rgba(20,24,40,0.8);
  border-color: rgba(91,95,199,0.25);
}
.project-card h5 {
  font-family: var(--heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 0.5rem;
  transition: color 0.2s;
}
.project-card:hover h5 { color: #8b8fdf; }
.project-card p {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 1rem;
}
.project-impact {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 500;
}

/* ===== Skills ===== */
.skills {
  padding: 7rem 0;
  background: rgba(13,17,23,0.35);
}

.skills .section-title {
  margin-bottom: 3.5rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.skill-card {
  background: rgba(13,17,23,0.5);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  padding: 2rem;
  transition: border-color 0.3s;
}
.skill-card:hover { border-color: rgba(91,95,199,0.3); }

.skill-cat {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.skill-tags span {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.3rem 0.75rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.4rem;
  color: #aab0cc;
  transition: border-color 0.2s;
}
.skill-card:hover .skill-tags span {
  border-color: rgba(255,255,255,0.13);
}

/* ===== Contact ===== */
.contact {
  padding: 7rem 0;
  border-top: 1px solid var(--border);
}

.contact-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 3rem;
  margin-bottom: 5rem;
  flex-wrap: wrap;
}

.contact-title {
  font-family: var(--heading);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1.05;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.contact-sub {
  color: var(--muted);
  font-style: italic;
  font-size: 1rem;
  opacity: 0.7;
}

.contact-links {
  display: flex;
  gap: 0.75rem;
}

.contact-icon {
  width: 3rem;
  height: 3rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: color 0.2s, border-color 0.2s;
}
.contact-icon:hover {
  color: var(--text);
  border-color: rgba(91,95,199,0.5);
}

.contact-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.6;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .navbar { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  .nav-menu-btn { display: block; }
  .mobile-menu { display: flex; }

  .hero { padding: 7rem 1.5rem 4rem; }
  .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { width: 240px; height: 240px; margin: 0 auto; }
  .hero-name { font-size: clamp(3rem, 12vw, 5rem); }

  .section-inner { padding: 0 1.5rem; }

  .exp-card { padding: 2rem 1.5rem; }
  .exp-grid { grid-template-columns: 1fr; gap: 2.5rem; }

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

  .contact-top { flex-direction: column; align-items: flex-start; }
  .contact-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 600px) {
  .section-title { font-size: 2rem; }
  .hero-name { font-size: clamp(2.5rem, 14vw, 4rem); }
}