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

:root {
  --bg: #0a0a0a;
  --text: #f0f0f0;
  --muted: #888;
  --accent: #0af;
  --accent2: #a0f;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fff;
    --text: #111;
    --muted: #666;
    --accent: #06f;
    --accent2: #60f;
  }
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Layout ── */
main {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
}

/* ── Nav ── */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 1.1rem 1rem;
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.site-nav.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.site-nav a {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.site-nav a.active { color: var(--accent); }

/* ── Hero ── */
.hero {
  min-height: 100vh; /* fallback for browsers without dvh support */
  min-height: 100dvh; /* tracks the real visible viewport as mobile browser chrome collapses/expands */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.scroll-cue {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--muted);
  text-decoration: none;
  font-size: 1.3rem;
  line-height: 1;
  opacity: 0.6;
  animation: scrollCueBounce 2.2s ease-in-out infinite;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.scroll-cue:hover {
  opacity: 1;
  color: var(--accent);
}

@keyframes scrollCueBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-cue { animation: none; }
}

.hero-label {
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero-name {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 3rem;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

.hero-link {
  display: inline-block;
  padding: 0.75rem 2rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 4px;
}

.hero-link:hover {
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 0 40px rgba(10, 170, 255, 0.3);
}

/* ── Sections ── */
section {
  padding: 6rem 0;
}

.section-label {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.section-text {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 520px;
  line-height: 1.8;
}

/* ── Skills grid ── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.skill-card {
  padding: 1.25rem;
  border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  border-radius: 8px;
  text-align: center;
}

.skill-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 30px rgba(10, 170, 255, 0.1);
}

.skill-card .icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.skill-card .name {
  font-size: 0.85rem;
  font-weight: 500;
}

/* ── Contact ── */
.contact-section {
  text-align: center;
  padding: 6rem 0 8rem;
}

.contact-section .section-title {
  font-size: clamp(2rem, 5vw, 3rem);
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.contact-links a {
  padding: 0.6rem 1.5rem;
  border: 1px solid color-mix(in srgb, var(--text) 15%, transparent);
  border-radius: 4px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.85rem;
}

.contact-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Footer ── */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
}

.back-to-top {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.8rem;
  transition: color 0.2s ease;
}

.back-to-top:hover { color: var(--accent); }

/* ── CV / Experience section ── */
.cv-section {
  margin-bottom: 2rem;
}

.cv-section-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
}

/* ── Gradient timeline bar ── */
.cv-timeline {
  position: relative;
  padding-left: 2rem;
}

.cv-timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent2), transparent);
}

.cv-timeline .cv-entry {
  margin-bottom: 2rem;
  position: relative;
}

.cv-timeline.stagger > .cv-entry {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.cv-timeline.stagger.visible > .cv-entry:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.cv-timeline.stagger.visible > .cv-entry:nth-child(2) { transition-delay: 0.06s; opacity: 1; transform: translateY(0); }
.cv-timeline.stagger.visible > .cv-entry:nth-child(3) { transition-delay: 0.12s; opacity: 1; transform: translateY(0); }
.cv-timeline.stagger.visible > .cv-entry:nth-child(4) { transition-delay: 0.18s; opacity: 1; transform: translateY(0); }
.cv-timeline.stagger.visible > .cv-entry:nth-child(5) { transition-delay: 0.24s; opacity: 1; transform: translateY(0); }
.cv-timeline.stagger.visible > .cv-entry:nth-child(6) { transition-delay: 0.30s; opacity: 1; transform: translateY(0); }
.cv-timeline.stagger.visible > .cv-entry:nth-child(7) { transition-delay: 0.36s; opacity: 1; transform: translateY(0); }
.cv-timeline.stagger.visible > .cv-entry:nth-child(8) { transition-delay: 0.42s; opacity: 1; transform: translateY(0); }
.cv-timeline.stagger.visible > .cv-entry:nth-child(9) { transition-delay: 0.48s; opacity: 1; transform: translateY(0); }
.cv-timeline.stagger.visible > .cv-entry:nth-child(10) { transition-delay: 0.54s; opacity: 1; transform: translateY(0); }

.cv-timeline .cv-entry::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 1.1rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: var(--bg);
  z-index: 1;
}

.cv-timeline .cv-entry:first-child::before {
  background: var(--accent);
  box-shadow: 0 0 10px rgba(10, 170, 255, 0.4);
}

.cv-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.cv-entry {
  position: relative;
  padding: 1.25rem 1.5rem;
  border: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
  border-radius: 8px;
  background: color-mix(in srgb, var(--text) 2%, transparent);
  transition: all 0.3s ease;
}

.cv-entry:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(10, 170, 255, 0.08);
}

.cv-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.4rem;
}

.cv-role {
  font-weight: 600;
  font-size: 1rem;
}

.cv-company {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
}

.cv-date {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.cv-desc {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 0.5rem;
}

.cv-tags {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.cv-tag {
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  background: color-mix(in srgb, var(--text) 6%, transparent);
  color: var(--muted);
  letter-spacing: 0.02em;
}

.cv-image {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  width: 56px;
  height: 56px;
  object-fit: contain;
  border-radius: 6px;
  pointer-events: none;
}

.show-more-wrapper {
  text-align: center;
  margin-top: 2rem;
}

.show-more-btn {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  border: 1px solid color-mix(in srgb, var(--text) 15%, transparent);
  border-radius: 4px;
  background: transparent;
  color: var(--text);
  font-size: 0.85rem;
  cursor: pointer;
  transition: opacity 0.4s ease, border-color 0.3s ease, color 0.3s ease;
}

.show-more-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Floating particles background ── */
.particles {
  position: fixed; inset: 0; z-index: -1;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 2px; height: 2px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  0%   { opacity: 0; transform: translateY(100vh) scale(0); }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.6; }
  100% { opacity: 0; transform: translateY(-10vh) scale(1); }
}

/* ── Smooth entrance animations ── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Staggered children ── */
.stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.stagger.visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(2) { transition-delay: 0.06s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(3) { transition-delay: 0.12s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(4) { transition-delay: 0.18s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(5) { transition-delay: 0.24s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(6) { transition-delay: 0.30s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(7) { transition-delay: 0.36s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(8) { transition-delay: 0.42s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(9) { transition-delay: 0.48s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(10) { transition-delay: 0.54s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(11) { transition-delay: 0.60s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(12) { transition-delay: 0.66s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(13) { transition-delay: 0.72s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(14) { transition-delay: 0.78s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(15) { transition-delay: 0.84s; opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(16) { transition-delay: 0.90s; opacity: 1; transform: translateY(0); }