/* ============================================================
   SIGNAL — portfolio stylesheet
   Palette: "magma" colormap ramp on an instrument-panel dark
   ============================================================ */

:root {
  /* Magma ramp */
  --m-violet: #3b0f70;
  --m-plum:   #8c2981;
  --m-rose:   #de4968;
  --m-amber:  #fe9f6d;
  --m-cream:  #fcfdbf;

  /* Surfaces */
  --bg:        #0b0a10;
  --bg-raise:  #14121c;
  --bg-card:   #161423;
  --line:      rgba(252, 253, 191, 0.09);
  --line-hot:  rgba(254, 159, 109, 0.35);

  /* Text */
  --text:      #efecf4;
  --text-dim:  #a49db6;
  --text-mute: #6f6884;

  /* Type */
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body:    "Albert Sans", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, monospace;

  --max-w: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--m-rose); color: var(--bg); }

img { max-width: 100%; display: block; }
a { color: inherit; }

.mono {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- focus visibility ---------- */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--m-amber);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ============ NAV ============ */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem clamp(1.25rem, 4vw, 3rem);
  background: rgba(11, 10, 16, 0.6);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s var(--ease), background 0.4s var(--ease);
}
.nav.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(11, 10, 16, 0.85);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
}
.nav__logo {
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 8px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.nav__brand:hover .nav__logo {
  transform: rotate(-6deg) scale(1.06);
  box-shadow: 0 6px 20px -6px rgba(222, 73, 104, 0.6);
}
.nav__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.nav__links { display: flex; gap: 1.8rem; }
.nav__links a {
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-dim);
  padding: 0.3rem 0;
  transition: color 0.25s;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, var(--m-rose), var(--m-amber));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav__links a:hover, .nav__links a.is-active { color: var(--text); }
.nav__links a:hover::after, .nav__links a.is-active::after { transform: scaleX(1); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}
.nav__toggle span {
  width: 22px; height: 2px;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.nav__toggle.is-open span:first-child { transform: translateY(4px) rotate(45deg); }
.nav__toggle.is-open span:last-child  { transform: translateY(-4px) rotate(-45deg); }

.nav__mobile {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.4rem;
  padding: 0 2rem;
  background: rgba(11, 10, 16, 0.97);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}
.nav__mobile.is-open { opacity: 1; pointer-events: auto; }
.nav__mobile a {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 8vw, 2.6rem);
  font-weight: 600;
  text-decoration: none;
  color: var(--text);
}
.nav__mobile a:hover { color: var(--m-amber); }

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 7rem clamp(1.25rem, 4vw, 3rem) 4rem;
}
.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--m-amber);
  border: 1px solid var(--line-hot);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  margin: 0 0 1.6rem;
  background: rgba(254, 159, 109, 0.05);
}
.hero__eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--m-amber);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(254, 159, 109, 0.5); }
  50%      { box-shadow: 0 0 0 7px rgba(254, 159, 109, 0); }
}

.hero__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 750;
  font-size: clamp(2.9rem, 8.5vw, 6.2rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  background: linear-gradient(100deg, var(--text) 35%, var(--m-amber) 70%, var(--m-rose) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__role {
  margin: 1.1rem 0 0;
  font-family: var(--font-display);
  font-weight: 450;
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  color: var(--text-dim);
}
.hero__tagline {
  margin: 1.4rem 0 0;
  max-width: 38rem;
  color: var(--text-dim);
  font-size: clamp(1rem, 1.6vw, 1.1rem);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.3rem;
}
.hero__socials {
  display: flex;
  gap: 0.6rem;
  margin-top: 1.6rem;
}

/* hero entry animation */
.hero__inner > * {
  opacity: 0;
  transform: translateY(22px);
  animation: rise 0.85s var(--ease) forwards;
}
.hero__inner > *:nth-child(1) { animation-delay: 0.05s; }
.hero__inner > *:nth-child(2) { animation-delay: 0.15s; }
.hero__inner > *:nth-child(3) { animation-delay: 0.27s; }
.hero__inner > *:nth-child(4) { animation-delay: 0.39s; }
.hero__inner > *:nth-child(5) { animation-delay: 0.51s; }
.hero__inner > *:nth-child(6) { animation-delay: 0.63s; }
@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-mute);
  text-decoration: none;
  z-index: 1;
}
.hero__scroll-line {
  width: 1px;
  height: 42px;
  background: linear-gradient(var(--m-amber), transparent);
  animation: drip 2s var(--ease) infinite;
  transform-origin: top;
}
@keyframes drip {
  0%   { transform: scaleY(0); }
  50%  { transform: scaleY(1); }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
              background 0.25s, border-color 0.25s, color 0.25s;
}
.btn--primary {
  color: var(--bg);
  background: linear-gradient(120deg, var(--m-rose), var(--m-amber));
  font-weight: 700;
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px -8px rgba(222, 73, 104, 0.55);
}
.btn--ghost {
  color: var(--text);
  border-color: var(--line);
  background: rgba(252, 253, 191, 0.02);
}
.btn--ghost:hover {
  border-color: var(--line-hot);
  background: rgba(254, 159, 109, 0.07);
  transform: translateY(-2px);
}
.btn--lower {
  text-transform: none;
  letter-spacing: 0.02em;
  font-size: 0.88rem;
}

.icon-link {
  display: grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--text-dim);
  transition: color 0.25s, border-color 0.25s, transform 0.25s var(--ease), background 0.25s;
}
.icon-link:hover {
  color: var(--m-amber);
  border-color: var(--line-hot);
  background: rgba(254, 159, 109, 0.06);
  transform: translateY(-3px);
}
.icon-link svg { width: 1.15rem; height: 1.15rem; }

/* ============ SECTIONS ============ */
.section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(4rem, 9vw, 7.5rem) clamp(1.25rem, 4vw, 3rem) 0;
}
.section__head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: clamp(2rem, 4vw, 3.2rem);
}
.section__index {
  color: var(--m-rose);
  font-weight: 700;
}
.section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 4.5vw, 2.8rem);
  letter-spacing: -0.02em;
}
.section__head::after {
  content: "";
  flex: 1;
  height: 1px;
  align-self: center;
  background: linear-gradient(90deg, var(--line-hot), transparent);
}

/* ---------- scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ ABOUT ============ */
.about {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.about__heading {
  margin: 0 0 1.4rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  line-height: 1.3;
  color: var(--m-cream);
}
.about__text p {
  margin: 0 0 1.1rem;
  color: var(--text-dim);
}
.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}
.stat {
  background: var(--bg-raise);
  padding: 1.4rem 1.2rem;
  transition: background 0.3s;
}
.stat:hover { background: var(--bg-card); }
.stat__value {
  font-family: var(--font-display);
  font-weight: 750;
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  background: linear-gradient(120deg, var(--m-amber), var(--m-rose));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat__label {
  margin-top: 0.4rem;
  font-size: 0.82rem;
  color: var(--text-mute);
  line-height: 1.45;
}

/* ============ EXPERIENCE TIMELINE ============ */
.timeline {
  position: relative;
  display: grid;
  gap: 1.4rem;
}
.xp {
  position: relative;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 1.5rem;
  padding: 1.7rem 1.7rem 1.7rem 2rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(180deg, var(--bg-raise), rgba(20, 18, 28, 0.4));
  transition: border-color 0.35s, transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
  overflow: hidden;
}
.xp::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(var(--m-violet), var(--m-rose), var(--m-amber));
  opacity: 0.45;
  transition: opacity 0.35s;
}
.xp:hover {
  border-color: var(--line-hot);
  transform: translateY(-3px);
  box-shadow: 0 18px 50px -18px rgba(140, 41, 129, 0.45);
}
.xp:hover::before { opacity: 1; }

.xp__meta { display: flex; flex-direction: column; gap: 0.35rem; }
.xp__period { color: var(--m-amber); }
.xp__location { color: var(--text-mute); font-size: 0.72rem; }
.xp__summary {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: var(--text-mute);
  font-style: italic;
}
.xp__role {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 1.25rem;
}
.xp__company {
  color: var(--m-rose);
  font-weight: 600;
  margin: 0.15rem 0 0.9rem;
}
.xp__points {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-dim);
  display: grid;
  gap: 0.55rem;
  font-size: 0.96rem;
}
.xp__points li::marker { color: var(--m-amber); }
.xp__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.1rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  color: var(--m-amber);
  background: rgba(254, 159, 109, 0.07);
  border: 1px solid rgba(254, 159, 109, 0.16);
  white-space: nowrap;
}

/* ============ OPEN SOURCE ============ */
.oss {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
}
.oss__card {
  display: block;
  text-decoration: none;
  padding: 1.6rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-raise);
  transition: border-color 0.35s, transform 0.35s var(--ease), background 0.35s;
}
.oss__card:hover {
  border-color: var(--line-hot);
  background: var(--bg-card);
  transform: translateY(-3px);
}
.oss__name {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--m-cream);
}
.oss__name svg { width: 1.05rem; height: 1.05rem; color: var(--m-amber); }
.oss__desc { margin: 0 0 1rem; color: var(--text-dim); font-size: 0.95rem; }

/* ============ PROJECTS ============ */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.4rem;
}
.project {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.7rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-raise);
  transition: border-color 0.35s, transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
  overflow: hidden;
}
.project::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: linear-gradient(90deg, var(--m-violet), var(--m-plum), var(--m-rose), var(--m-amber), var(--m-cream));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}
.project:hover {
  border-color: var(--line-hot);
  transform: translateY(-4px);
  box-shadow: 0 22px 55px -20px rgba(59, 15, 112, 0.7);
}
.project:hover::after { transform: scaleX(1); }
.project.is-hidden { display: none; }

.project__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.8rem;
  margin-bottom: 0.9rem;
}
.project__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 1.18rem;
  line-height: 1.3;
}
.project__links { display: flex; gap: 0.4rem; flex-shrink: 0; }
.project__links .icon-link { width: 2.1rem; height: 2.1rem; border-radius: 8px; }
.project__links svg { width: 0.95rem; height: 0.95rem; }
.project__desc {
  margin: 0;
  flex: 1;
  color: var(--text-dim);
  font-size: 0.94rem;
}
.project__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.2rem;
}
.projects__more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 2.2rem;
}

/* ============ SKILLS ============ */
.skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.4rem;
}
.skill-group {
  padding: 1.6rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-raise);
  transition: border-color 0.35s;
}
.skill-group:hover { border-color: var(--line-hot); }
.skill-group__name {
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--m-amber);
}
.skill-group__items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.skill-chip {
  font-size: 0.84rem;
  padding: 0.38rem 0.78rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--text-dim);
  background: rgba(252, 253, 191, 0.02);
  transition: color 0.25s, border-color 0.25s, background 0.25s, transform 0.25s var(--ease);
  cursor: default;
}
.skill-chip:hover {
  color: var(--m-cream);
  border-color: var(--line-hot);
  background: rgba(254, 159, 109, 0.07);
  transform: translateY(-2px);
}

/* ============ ACHIEVEMENTS ============ */
.achievements { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.ach {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 1.2rem;
  padding: 1.4rem 1.6rem;
  background: var(--bg-raise);
  transition: background 0.3s;
}
.ach:hover { background: var(--bg-card); }
.ach__year { color: var(--m-rose); font-weight: 700; }
.ach__title { margin: 0 0 0.3rem; font-weight: 600; font-family: var(--font-display); font-size: 1.05rem; }
.ach__detail { margin: 0; color: var(--text-mute); font-size: 0.92rem; }

/* ============ EDUCATION ============ */
.education { display: grid; gap: 1.4rem; }
.edu {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem 1.5rem;
  padding: 1.5rem 1.7rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-raise);
  transition: border-color 0.35s;
}
.edu:hover { border-color: var(--line-hot); }
.edu__inst { margin: 0; font-family: var(--font-display); font-weight: 650; font-size: 1.15rem; }
.edu__degree { margin: 0.3rem 0 0; color: var(--text-dim); font-size: 0.95rem; }
.edu__period { color: var(--m-amber); }

/* ============ CONTACT ============ */
.section--contact {
  padding-bottom: clamp(4rem, 9vw, 7rem);
  text-align: center;
}
.contact {
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 5vw, 4rem);
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    radial-gradient(ellipse 70% 90% at 50% 110%, rgba(140, 41, 129, 0.22), transparent),
    var(--bg-raise);
}
.contact__eyebrow { color: var(--m-amber); margin: 0 0 1rem; }
.contact__heading {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 750;
  font-size: clamp(1.9rem, 5vw, 3.2rem);
  letter-spacing: -0.02em;
  background: linear-gradient(110deg, var(--text), var(--m-amber));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.contact__blurb {
  max-width: 34rem;
  margin: 1.2rem auto 0;
  color: var(--text-dim);
}
.contact__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.9rem;
  margin-top: 2.2rem;
}

/* ============ FOOTER ============ */
.footer {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.8rem clamp(1.25rem, 4vw, 3rem) 2.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  color: var(--text-mute);
}
.footer .mono { margin: 0; text-transform: none; letter-spacing: 0.04em; }
.footer__socials { display: flex; gap: 0.5rem; }

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .about { grid-template-columns: 1fr; }
  .oss { grid-template-columns: 1fr; }
  .xp { grid-template-columns: 1fr; gap: 0.9rem; }
  .xp__meta { flex-direction: row; flex-wrap: wrap; align-items: baseline; gap: 0.4rem 1rem; }
  .xp__summary { display: none; }
}

@media (max-width: 700px) {
  .nav__links { display: none; }
  .nav__toggle { display: flex; }
  .nav__name { display: none; }
  .ach { grid-template-columns: 1fr; gap: 0.3rem; }
  .hero__scroll { display: none; }
  .about__stats { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 420px) {
  .about__stats { grid-template-columns: 1fr; }
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero__inner > * { opacity: 1; transform: none; animation: none; }
  .reveal { opacity: 1; transform: none; }
  .hero__canvas { display: none; }
}