/* -----------------------------------------------------------
  Tokens
----------------------------------------------------------- */
:root {
  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --radius: 14px;
  --radius-sm: 10px;
  --max-width: 1080px;
  --transition: 180ms ease;
}

html[data-theme="dark"] {
  --bg: #08090b;
  --text: #f2f3f5;
  --muted: #9aa1ac;
  --line: rgba(255, 255, 255, 0.5);

  --glass-bg: rgba(255, 255, 255, 0.055);
  --glass-bg-strong: rgba(255, 255, 255, 0.09);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);

  --accent: #4c8dff;
  --accent-strong: #2f6df0;
  --accent-soft: rgba(76, 141, 255, 0.18);
  --accent-text: #0a0e16;

  --glow-a: rgba(76, 141, 255, 0.35);
  --glow-b: rgba(120, 100, 255, 0.22);
  --glow-c: rgba(60, 190, 220, 0.16);
}

html[data-theme="light"] {
  --bg: #eef0f3;
  --text: #10131a;
  --muted: #5a6270;
  --line: rgba(0, 0, 0, 0.5);

  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-bg-strong: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.7);
  --glass-shadow: 0 12px 32px rgba(20, 30, 50, 0.12);

  --accent: #2f6df0;
  --accent-strong: #1d4fd1;
  --accent-soft: rgba(47, 109, 240, 0.12);
  --accent-text: #ffffff;

  --glow-a: rgba(76, 141, 255, 0.32);
  --glow-b: rgba(120, 100, 255, 0.2);
  --glow-c: rgba(60, 190, 220, 0.18);
}

/* -----------------------------------------------------------
  Reset & base
----------------------------------------------------------- */
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.45;
  transition:
    background var(--transition),
    color var(--transition);
  padding-bottom: 6.5rem; /* clearance for the fixed dock */
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  margin: 0;
  line-height: 1.2;
}
p {
  margin: 0;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
svg {
  width: 24px;
  height: 24px;
}

.mono {
  font-family: var(--font-mono);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* -----------------------------------------------------------
  Ambient background
----------------------------------------------------------- */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: var(--bg);
}
.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
}
.glow--a {
  width: 46vw;
  height: 46vw;
  top: -12vw;
  left: -8vw;
  background: var(--glow-a);
}
.glow--b {
  width: 38vw;
  height: 38vw;
  top: 20vh;
  right: -10vw;
  background: var(--glow-b);
}
.glow--c {
  width: 42vw;
  height: 42vw;
  bottom: -14vw;
  left: 20vw;
  background: var(--glow-c);
}
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--glass-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--glass-border) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse at 50% 0%, black 0%, transparent 70%);
}

/* -----------------------------------------------------------
  Glass utilities
----------------------------------------------------------- */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  box-shadow: var(--glass-shadow);
}

.glass-panel {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius);
  padding: 2rem;
}

/* -----------------------------------------------------------
  Layout helpers
----------------------------------------------------------- */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3.25rem 1.5rem;
  scroll-margin-top: 6rem;
}

.section__head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.section__head h2 {
  font-size: 1.4rem;
  white-space: nowrap;
}
.section__rule {
  flex: 1;
  height: 1px;
  background: var(--glass-border);
}

.divider {
  height: 1px;
  background: var(--glass-border);
  margin: 2.5rem 0;
}

/* -----------------------------------------------------------
  Top floating bar
----------------------------------------------------------- */
.topbar {
  position: fixed;
  top: 1.1rem;
  left: 1.25rem;
  right: 1.25rem;
  z-index: 60;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
}
.topbar > * {
  pointer-events: auto;
}

.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.theme-toggle {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--text);
  cursor: pointer;
  font-size: 1.05rem;
  transition: transform var(--transition);
}
.theme-toggle:hover {
  transform: translateY(-1px);
}

/* -----------------------------------------------------------
  Buttons
----------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.15rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform var(--transition),
    border-color var(--transition),
    background var(--transition);
}
.btn--primary {
  background: var(--accent);
  color: var(--accent-text);
}
.btn--primary.glass {
  background: var(--accent);
  border-color: var(--accent-strong);
}
.btn--primary:hover {
  transform: translateY(-1px);
  background: var(--accent-strong);
}

.btn--ghost {
  color: var(--text);
  background: var(--glass-bg);
  border-color: var(--glass-border);
}
.btn--ghost:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.btn--small {
  padding: 0.5rem 0.9rem;
  font-size: 0.82rem;
}

/* -----------------------------------------------------------
  Hero
----------------------------------------------------------- */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 7.5rem 1.5rem 3rem;
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.82rem;
  margin-bottom: 0.9rem;
}

.hero__name {
  font-size: clamp(2.1rem, 4.6vw, 3.1rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero__summary {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 50ch;
  margin-bottom: 2rem;
}

.hero__stats {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.stat {
  display: flex;
  flex-direction: column;
}
.stat__value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--accent);
}
.stat__label {
  color: var(--muted);
  font-size: 0.8rem;
}

.hero__cta {
  display: flex;
  gap: 0.9rem;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}
.hero__cta .btn--ghost {
  padding: 0.65rem 1.15rem;
  border-radius: 999px;
}

.hero__socials,
.footer-socials {
  display: flex;
  gap: 0.6rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: var(--text);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  transition:
    transform var(--transition),
    border-color var(--transition),
    color var(--transition);
}
.social-link:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--accent);
}
.social-link svg {
  width: 17px;
  height: 17px;
}

.hero__media {
  justify-self: center;
}
.hero__photo-ring {
  width: 240px;
  height: 240px;
  border-radius: 50%;
  padding: 8px;
}
.hero__photo-ring img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

/* -----------------------------------------------------------
  About / Education
----------------------------------------------------------- */
.edu__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}
.edu__degree {
  font-size: 1.2rem;
}
.edu__period {
  color: var(--accent);
  font-size: 0.85rem;
}
.edu__school {
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.edu__courses {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.edu__courses li {
  border: 1px solid var(--glass-border);
  background: var(--glass-bg-strong);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font-size: 0.83rem;
  color: var(--muted);
}

/* -----------------------------------------------------------
  Projects
----------------------------------------------------------- */
.projects {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.project {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 2rem;
  align-items: start;
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: var(--glass-shadow);
}

.project__media {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--glass-bg-strong);
}
.project__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project__heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}
.project__title {
  font-size: 1.2rem;
}
.project__stack {
  color: var(--accent);
  font-size: 0.8rem;
}

.project__bullets {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.project__bullets li {
  padding-left: 1.1rem;
  position: relative;
  color: var(--muted);
  font-size: 0.94rem;
}
.project__bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.project__embed {
  margin: 1rem 0 1.25rem;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--glass-bg-strong);
}
.project__embed iframe {
  width: 100%;
  aspect-ratio: 600 / 373.5;
  border: 0;
  display: block;
}

.project__links {
  display: flex;
  gap: 0.75rem;
}
.project__links .btn {
  padding: 0.55rem 1rem;
}

/* -----------------------------------------------------------
  Experience timeline
----------------------------------------------------------- */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1.5rem;
}
.timeline-item:not(:last-child) {
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--glass-border);
}

.timeline-item__period {
  color: var(--accent);
  font-size: 0.8rem;
}
.timeline-item__role {
  font-size: 1.08rem;
  margin-bottom: 0.2rem;
}
.timeline-item__org {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.9rem;
}
.timeline-item__bullets {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.timeline-item__bullets li {
  padding-left: 1.1rem;
  position: relative;
  color: var(--muted);
  font-size: 0.94rem;
}
.timeline-item__bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

/* -----------------------------------------------------------
  Skills
----------------------------------------------------------- */
.skills {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.skill-group__title {
  font-size: 0.85rem;
  color: var(--muted);
  font-family: var(--font-body);
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.skill-tag {
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font-size: 0.83rem;
  background: var(--glass-bg-strong);
}

/* -----------------------------------------------------------
  Certifications
----------------------------------------------------------- */
.certs {
  display: flex;
  flex-direction: column;
}
.cert {
  display: flex;
  gap: 1.1rem;
  align-items: center;
  padding: 1rem 0;
}
.cert:not(:last-child) {
  border-bottom: 1px solid var(--glass-border);
}
.cert__badge {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  border: 1px solid var(--glass-border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
}
.cert__title {
  font-size: 1rem;
  margin-bottom: 0.15rem;
}
.cert__meta {
  color: var(--muted);
  font-size: 0.82rem;
}

/* -----------------------------------------------------------
  Contact
----------------------------------------------------------- */
.contact__lead {
  color: var(--muted);
  margin-bottom: 1.75rem;
  max-width: 50ch;
}
.contact__list {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 2.5rem;
  margin: 0 0 2rem;
}
.contact__list dt {
  color: var(--muted);
  font-size: 0.78rem;
  margin-bottom: 0.3rem;
}
.contact__list dd {
  margin: 0;
  font-size: 0.95rem;
}
.contact__list a:hover {
  color: var(--accent);
}

/* -----------------------------------------------------------
  Footer
----------------------------------------------------------- */
.site-footer {
  max-width: var(--max-width);
  margin: 2rem auto 0;
  padding: 2rem 1.5rem 2.5rem;
  text-align: center;
}
.footer-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1.25rem;
}
.footer-nav a {
  color: var(--muted);
  font-size: 0.88rem;
  transition: color var(--transition);
}
.footer-nav a:hover {
  color: var(--accent);
}

.footer-socials {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.footer-copy {
  color: var(--muted);
  font-size: 0.82rem;
}

/* -----------------------------------------------------------
  Fixed floating dock (bottom nav)
----------------------------------------------------------- */
.dock {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  z-index: 70;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem;
  border-radius: 999px;
  max-width: calc(100vw - 1.5rem);
  overflow-x: auto;
  scrollbar-width: none;
}
.dock::-webkit-scrollbar {
  display: none;
}

.dock__item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
  white-space: nowrap;
  transition:
    color var(--transition),
    background var(--transition);
}
.dock__item svg {
  width: 24px;
  height: 24px;
  flex: none;
}
.dock__item:hover {
  color: var(--text);
  background: var(--glass-bg-strong);
}
.dock__item:focus {
  border-radius: 50%;
}
.dock__item.is-active {
  color: var(--accent-text);
  background: var(--accent);
}

/* -----------------------------------------------------------
  Responsive
----------------------------------------------------------- */
@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: left;
    padding-top: 6.5rem;
  }
  .hero__media {
    justify-self: start;
  }
  .hero__photo-ring {
    width: 150px;
    height: 150px;
  }
  .project {
    grid-template-columns: 1fr;
  }
  .contact__list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 700px) {
  .hero {
    padding-top: 5rem;
    gap: 1.2rem;
  }

  .contact__list {
    grid-template-columns: 1fr;
  }
  .timeline-item {
    grid-template-columns: 1fr;
  }
  .timeline-item__period {
    margin-bottom: 0.3rem;
  }
  .brand {
    font-size: 0.85rem;
    padding: 0.5rem 0.9rem;
  }
  .dock__item span {
    display: none;
  }
  .dock__item {
    padding: 0.6rem;
  }
  .dock__item svg {
    width: 24px;
    height: 24px;
  }
}