/* ============================
   TOKENS & RESET
   ============================ */
:root {
  --bg: #0d0d0f;
  --bg-alt: #111115;
  --surface: #18181d;
  --surface-2: #22222a;
  --border: rgba(255,255,255,0.08);
  --text: #e8e8f0;
  --text-muted: #7a7a8c;
  --accent: #7c6af7;
  --accent-2: #a78bfa;
  --accent-glow: rgba(124,106,247,0.25);
  --green: #4ade80;
  --radius: 12px;
  --radius-sm: 8px;
  --nav-h: 68px;
  --transition: 0.3s ease;
  --font-body: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --shadow: 0 4px 32px rgba(0,0,0,0.4);
}

[data-theme="light"] {
  --bg: #f7f7fb;
  --bg-alt: #eeeef6;
  --surface: #ffffff;
  --surface-2: #f0f0f8;
  --border: rgba(0,0,0,0.08);
  --text: #18181d;
  --text-muted: #6b6b80;
  --accent: #6354e8;
  --accent-2: #7c6af7;
  --accent-glow: rgba(99,84,232,0.15);
  --shadow: 0 4px 32px rgba(0,0,0,0.08);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; }

.mono { font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.04em; }
.accent { color: var(--accent); }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* ============================
   BUTTONS
   ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-2); transform: translateY(-2px); box-shadow: 0 8px 24px var(--accent-glow); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-full { width: 100%; justify-content: center; padding: 14px; font-size: 1rem; }

/* ============================
   NAV
   ============================ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: var(--bg);
  box-shadow: 0 1px 0 var(--border);
  backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}
.logo {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.dot { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
  border-radius: 2px;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
#theme-toggle {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: border-color var(--transition);
}
#theme-toggle:hover { border-color: var(--accent); }
[data-theme="dark"] .sun { display: none; }
[data-theme="light"] .moon { display: none; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all var(--transition); }
.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 16px 24px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
  gap: 16px;
}
.mobile-menu a { font-size: 1rem; font-weight: 500; color: var(--text-muted); transition: color var(--transition); }
.mobile-menu a:hover { color: var(--text); }
.mobile-menu.open { display: flex; }

/* ============================
   HERO
   ============================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-h);
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.18;
}
.blob-1 {
  width: 600px; height: 600px;
  background: var(--accent);
  top: -200px; right: -100px;
  animation: float 8s ease-in-out infinite;
}
.blob-2 {
  width: 400px; height: 400px;
  background: #a78bfa;
  bottom: -100px; left: -100px;
  animation: float 10s ease-in-out infinite reverse;
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
                    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 80%);
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-30px); }
}
.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding: 40px 24px;
}
.hero-eyebrow {
  color: var(--text-muted);
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.hero-name {
  font-size: clamp(3.5rem, 10vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.0;
  margin-bottom: 20px;
}
.hero-role {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-muted);
  margin-bottom: 20px;
  height: 2em;
  font-family: var(--font-mono);
}
.cursor {
  display: inline-block;
  color: var(--accent);
  animation: blink 1s step-end infinite;
  font-weight: 300;
}
@keyframes blink { 0%,100% { opacity:1; } 50% { opacity:0; } }
.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-num {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}
.stat-label { font-size: 0.78rem; color: var(--text-muted); font-family: var(--font-mono); }
.stat-divider { width: 1px; height: 40px; background: var(--border); }
.scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  animation: fadeInUp 1s ease 1s both;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}
@keyframes fadeInUp { from { opacity:0; transform: translate(-50%,16px); } to { opacity:1; transform: translate(-50%,0); } }

/* ============================
   SECTIONS
   ============================ */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-alt); }
.section-label {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 48px;
}

/* ============================
   ABOUT
   ============================ */
.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 64px;
  align-items: center;
}
.image-frame { position: relative; display: inline-block; }
.avatar-placeholder {
  width: 260px; height: 260px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem;
  font-weight: 700;
  color: white;
  position: relative;
  z-index: 1;
}
.image-border {
  position: absolute;
  inset: -8px;
  border-radius: calc(var(--radius) + 4px);
  border: 2px solid var(--accent);
  opacity: 0.4;
  transform: rotate(3deg);
}
.about-text p { color: var(--text-muted); margin-bottom: 16px; line-height: 1.8; font-size: 1.02rem; }
.about-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 100px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}
.tag::before { content: '●'; color: var(--green); font-size: 0.5rem; }

/* ============================
   SKILLS
   ============================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}
.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color var(--transition), transform var(--transition);
}
.skill-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.skill-icon { font-size: 1.8rem; margin-bottom: 12px; }
.skill-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 14px; }
.skill-card ul { display: flex; flex-direction: column; gap: 7px; }
.skill-card li { font-size: 0.87rem; color: var(--text-muted); }
.skill-card li::before { content: '→ '; color: var(--accent); }

.skills-bar-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 24px; }
.skill-bars { display: flex; flex-direction: column; gap: 18px; }
.skill-bar-item {}
.skill-bar-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.88rem;
  font-weight: 500;
}
.skill-bar-track {
  height: 6px;
  background: var(--surface-2);
  border-radius: 100px;
  overflow: hidden;
}
.skill-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 100px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ============================
   PROJECTS
   ============================ */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.filter-btn {
  padding: 7px 18px;
  border-radius: 100px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  transition: border-color var(--transition), transform var(--transition), opacity 0.3s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.project-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.project-card.hidden { display: none; }
.project-card.featured { border-color: var(--accent); }
.featured-badge {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.project-icon { font-size: 1.6rem; }
.project-links { display: flex; gap: 12px; }
.project-links a { color: var(--text-muted); transition: color var(--transition); }
.project-links a:hover { color: var(--accent); }
.project-card h3 { font-size: 1.05rem; font-weight: 600; }
.project-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; flex: 1; }
.project-tags {
  display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px;
}
.project-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--surface-2);
  color: var(--accent);
  border: 1px solid var(--border);
}

/* ============================
   TIMELINE
   ============================ */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  border-radius: 2px;
}
.timeline-item {
  position: relative;
  padding-bottom: 48px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -38px; top: 6px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}
.timeline-date {
  color: var(--accent);
  font-size: 0.78rem;
  margin-bottom: 10px;
}
.timeline-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: border-color var(--transition);
}
.timeline-card:hover { border-color: var(--accent); }
.timeline-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
.company { font-size: 0.88rem; color: var(--text-muted); display: block; margin-bottom: 14px; }
.location { font-style: italic; }
.timeline-card ul { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.timeline-card li {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
  line-height: 1.65;
}
.timeline-card li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
}
.timeline-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.timeline-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--surface-2);
  color: var(--accent);
  border: 1px solid var(--border);
}

/* ============================
   CONTACT
   ============================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact-left p { color: var(--text-muted); font-size: 1.02rem; line-height: 1.8; margin-bottom: 32px; }
.contact-links { display: flex; flex-direction: column; gap: 16px; }
.contact-link {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color var(--transition);
}
.contact-link:hover { color: var(--accent); }
.contact-icon { font-size: 1.1rem; display: flex; }

.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-group label { font-size: 0.85rem; font-weight: 500; color: var(--text-muted); }
.form-group input,
.form-group textarea {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-success {
  padding: 14px;
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.3);
  border-radius: var(--radius-sm);
  color: var(--green);
  font-size: 0.9rem;
  text-align: center;
}

/* ============================
   FOOTER
   ============================ */
footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-copy { color: var(--text-muted); font-size: 0.78rem; }
.footer-socials { display: flex; gap: 16px; }
.footer-socials a { color: var(--text-muted); transition: color var(--transition); }
.footer-socials a:hover { color: var(--accent); }

/* ============================
   REVEAL ANIMATIONS
   ============================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 900px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn-outline { display: none; }
  .hamburger { display: flex; margin-left: auto; }
  .nav-actions { gap: 8px; }
  .section { padding: 72px 0; }
  .section-title { margin-bottom: 32px; }
}

@media (max-width: 560px) {
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 16px; }
  .stat-num { font-size: 1.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}