/* ============================================================
   Amal Shaji — personal site
   Theme: deep space / Interstellar. Dark navy field, Gargantua
   amber accent, ice-blue secondary.
   ============================================================ */

:root {
  --bg: #060911;
  --bg-raised: #0b1120;
  --bg-card: rgba(13, 19, 35, 0.72);
  --line: rgba(148, 170, 220, 0.14);
  --text: #d7deed;
  --text-dim: #8a96b0;
  --accent: #f0a84b;        /* accretion-disk amber */
  --accent-soft: rgba(240, 168, 75, 0.14);
  --ice: #9ec5ff;           /* secondary, used sparingly */
  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --max-w: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #16100a; }

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

a { color: var(--ice); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

strong { color: #f0f4fc; font-weight: 600; }
em { color: var(--ice); font-style: italic; }

/* ---------- starfield canvas ---------- */
#starfield {
  position: fixed;
  inset: 0;
  z-index: -1;
  display: block;
  background:
    radial-gradient(ellipse 80% 55% at 70% 12%, rgba(35, 52, 96, 0.35), transparent 60%),
    radial-gradient(ellipse 60% 45% at 15% 85%, rgba(64, 38, 14, 0.22), transparent 65%),
    var(--bg);
}

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem clamp(1.25rem, 4vw, 3rem);
  background: rgba(6, 9, 17, 0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--text);
}
.nav__logo:hover { text-decoration: none; color: var(--accent); }

.nav__logo-ring {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2.5px solid var(--accent);
  box-shadow: 0 0 10px rgba(240, 168, 75, 0.55);
  flex: none;
}

.nav__links {
  display: flex;
  gap: clamp(0.8rem, 2.2vw, 1.7rem);
  font-size: 0.92rem;
}
.nav__links a {
  color: var(--text-dim);
  transition: color 0.2s;
}
.nav__links a:hover,
.nav__links a.is-active { color: var(--text); text-decoration: none; }
.nav__links a.is-active { color: var(--accent); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.7rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  background: rgba(13, 19, 35, 0.5);
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
  white-space: nowrap;
}
.btn:hover {
  text-decoration: none;
  border-color: rgba(240, 168, 75, 0.6);
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a1206;
  font-weight: 600;
  box-shadow: 0 0 24px rgba(240, 168, 75, 0.28);
}
.btn--primary:hover { background: #f7b863; border-color: #f7b863; }

.btn--ghost { background: transparent; }

.btn--small { padding: 0.45rem 1rem; font-size: 0.85rem; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: calc(100vh - 62px);
  display: flex;
  align-items: center;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem clamp(1.25rem, 4vw, 3rem);
}

.hero__content { position: relative; z-index: 1; max-width: 640px; }

.hero__eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.4rem;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9vw, 5.5rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: #f5f8ff;
  margin-bottom: 1.4rem;
}

.hero__sub {
  font-size: clamp(1.1rem, 2.2vw, 1.3rem);
  color: var(--text-dim);
  margin-bottom: 2.2rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
}

.hero__scroll {
  position: absolute;
  bottom: -3rem;
  left: 0;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  opacity: 0.6;
  animation: drift 2.6s ease-in-out infinite;
}
@keyframes drift {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ---------- Gargantua (CSS black hole) ---------- */
.gargantua {
  position: absolute;
  top: 50%;
  right: clamp(-14rem, -6vw, -3rem);
  transform: translateY(-50%);
  width: clamp(380px, 46vw, 620px);
  aspect-ratio: 1;
  pointer-events: none;
  opacity: 0.9;
}
.gargantua > div { position: absolute; }

.gargantua__halo {
  inset: -12%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 168, 75, 0.16) 0%, rgba(240, 168, 75, 0.05) 42%, transparent 68%);
}

/* photon ring */
.gargantua__ring {
  inset: 26%;
  border-radius: 50%;
  box-shadow:
    0 0 18px 5px rgba(247, 196, 122, 0.85),
    0 0 70px 22px rgba(240, 168, 75, 0.4),
    inset 0 0 26px 7px rgba(247, 196, 122, 0.75);
  animation: pulse 7s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.22); }
}

/* accretion disk seen edge-on */
.gargantua__disk {
  top: 50%;
  left: -4%;
  right: -4%;
  height: 13%;
  transform: translateY(-50%) rotate(-7deg);
  border-radius: 50%;
  background: radial-gradient(ellipse 50% 50% at 50% 50%,
    rgba(255, 222, 168, 0.85) 0%,
    rgba(240, 168, 75, 0.5) 38%,
    rgba(214, 122, 38, 0.18) 68%,
    transparent 100%);
  filter: blur(6px);
}

/* event horizon */
.gargantua__core {
  inset: 30%;
  border-radius: 50%;
  background: #02040a;
  box-shadow: 0 0 36px 10px rgba(2, 4, 10, 0.95);
}

/* ---------- sections ---------- */
.section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(4.5rem, 9vw, 7.5rem) clamp(1.25rem, 4vw, 3rem) 0;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.6vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #f0f4fc;
  margin-bottom: 2.6rem;
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.section__num {
  font-size: 0.95rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.section__num::after { content: " /"; color: var(--text-dim); }

/* reveal-on-scroll */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- about ---------- */
.about {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
}

.about__text p + p { margin-top: 1.2rem; }

.about__stats {
  list-style: none;
  display: grid;
  gap: 1.1rem;
  align-content: start;
}

.about__stats li {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.05rem 1.3rem;
  background: var(--bg-card);
  display: grid;
  gap: 0.15rem;
}

.stat__value {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--accent);
}
.stat__label { font-size: 0.88rem; color: var(--text-dim); }

/* ---------- experience timeline ---------- */
.timeline { display: grid; gap: 3rem; }

.timeline__item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(1.2rem, 3vw, 2.6rem);
  position: relative;
}

.timeline__meta {
  font-size: 0.82rem;
  color: var(--text-dim);
  display: grid;
  gap: 0.3rem;
  align-content: start;
  padding-top: 0.35rem;
}
.timeline__period { color: var(--accent); }

.timeline__body {
  border-left: 1px solid var(--line);
  padding-left: clamp(1.2rem, 3vw, 2.2rem);
  position: relative;
}
.timeline__body::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.6rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(240, 168, 75, 0.8);
}

.timeline__body h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: #f0f4fc;
}

.timeline__team {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 0.8rem;
}

.timeline__body ul {
  list-style: none;
  display: grid;
  gap: 0.7rem;
  margin-top: 0.9rem;
}
.timeline__body ul li {
  padding-left: 1.3rem;
  position: relative;
  color: var(--text-dim);
  font-size: 0.97rem;
}
.timeline__body ul li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ---------- systems cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem;
}

.card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-card);
  padding: 1.7rem 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.card:hover {
  border-color: rgba(240, 168, 75, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45);
}

.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}
.card__head h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: #f0f4fc;
}

.card__tag {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  white-space: nowrap;
}

.card__sub {
  font-size: 0.88rem;
  color: var(--ice);
  margin-top: -0.5rem;
}

.card p { color: var(--text-dim); font-size: 0.96rem; }

.card__impact {
  border-top: 1px dashed var(--line);
  padding-top: 0.85rem;
  margin-top: auto;
  color: var(--text) !important;
  font-size: 0.93rem !important;
}
.card__impact .mono {
  color: var(--accent);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  margin-right: 0.5rem;
}

.card__stack {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  font-size: 0.74rem;
}
.card__stack li {
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.18rem 0.55rem;
}

/* ---------- skills ---------- */
.skills { display: grid; gap: 2.2rem; }

.skills__group h3 {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.9rem;
}

.chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.chips li {
  border: 1px solid var(--line);
  background: var(--bg-card);
  border-radius: 999px;
  padding: 0.42rem 1rem;
  font-size: 0.9rem;
  color: var(--text);
  transition: border-color 0.2s;
}
.chips li:hover { border-color: rgba(240, 168, 75, 0.5); }

/* ---------- education ---------- */
.edu {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
}

.edu__heading {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1rem;
}
.edu__col > .edu__heading:not(:first-child) { margin-top: 2.2rem; }

.edu__item + .edu__item { margin-top: 1.6rem; }
.edu__item h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: #f0f4fc;
}
.edu__inst { color: var(--ice); font-size: 0.92rem; }
.edu__note { color: var(--text-dim); font-size: 0.9rem; margin-top: 0.35rem; }

.edu__certs {
  list-style: none;
  display: grid;
  gap: 0.65rem;
}
.edu__certs li {
  padding-left: 1.3rem;
  position: relative;
  color: var(--text-dim);
  font-size: 0.95rem;
}
.edu__certs li::before {
  content: "✦";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8rem;
}

/* ---------- contact ---------- */
.section--contact { text-align: center; padding-bottom: 2rem; }
.section--contact .section__title { justify-content: center; }

.contact__lead {
  max-width: 560px;
  margin: 0 auto 2.2rem;
  color: var(--text-dim);
  font-size: 1.08rem;
}

.section--contact .hero__cta { justify-content: center; }

.contact__loc {
  margin-top: 2.4rem;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

/* ---------- footer ---------- */
.footer {
  margin-top: clamp(4rem, 8vw, 6.5rem);
  border-top: 1px solid var(--line);
  padding: 3rem clamp(1.25rem, 4vw, 3rem) 2.6rem;
  text-align: center;
}

.footer__quote {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  color: var(--text-dim);
  max-width: 620px;
  margin: 0 auto 1.2rem;
  font-style: italic;
}
.footer__quote cite {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  font-style: normal;
  color: var(--accent);
}

.footer__meta { font-size: 0.78rem; color: var(--text-dim); opacity: 0.75; }

/* ============================================================
   Creative layer — mission log planets, constellation, rail,
   TARS, decode effect
   ============================================================ */

/* section title decoration */
.section__hint {
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  font-weight: 400;
}

[data-decode] { white-space: pre-wrap; }

/* hero role line */
.hero__role {
  font-size: 0.92rem;
  color: var(--ice);
  letter-spacing: 0.06em;
  margin-bottom: 1.1rem;
}

/* ---------- trajectory rail ---------- */
.rail {
  position: fixed;
  right: 1.6rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 9;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.4rem;
  padding: 0.6rem 0;
}

.rail__line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--line) 12%, var(--line) 88%, transparent);
}

.rail a {
  position: relative;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-dim);
  opacity: 0.45;
  transition: opacity 0.25s, background 0.25s, box-shadow 0.25s, transform 0.25s;
}
.rail a:hover { opacity: 1; transform: scale(1.35); }
.rail a.is-active {
  opacity: 1;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(240, 168, 75, 0.9);
}

@media (max-width: 1180px) { .rail { display: none; } }

/* ---------- mission log ---------- */
.timeline__log {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  opacity: 0.85;
}

.planet {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  margin: 0.45rem 0;
  position: relative;
  flex: none;
}

/* Veracode — the new world: teal with a terminator shadow */
.planet--veracode {
  background:
    radial-gradient(circle at 32% 30%, #7fe3c8 0%, #2aa893 38%, #0d4f4a 72%, #062a28 100%);
  box-shadow: 0 0 18px rgba(63, 199, 172, 0.4), inset -7px -5px 14px rgba(2, 10, 12, 0.85);
}

/* AWS — ringed amber gas giant */
.planet--aws {
  background:
    radial-gradient(circle at 35% 30%, #ffd9a0 0%, #f0a84b 40%, #8a4f16 78%, #3a1f08 100%);
  box-shadow: 0 0 18px rgba(240, 168, 75, 0.45), inset -7px -5px 14px rgba(20, 8, 0, 0.8);
}
.planet--aws::after {
  content: "";
  position: absolute;
  inset: 42% -32%;
  border-radius: 50%;
  border: 2px solid rgba(240, 168, 75, 0.55);
  transform: rotate(-18deg);
  border-top-color: transparent;
}

/* TCS — home planet: blue marble */
.planet--tcs {
  background:
    radial-gradient(circle at 32% 30%, #b8d9ff 0%, #4d8fe0 42%, #16386e 76%, #081830 100%);
  box-shadow: 0 0 18px rgba(110, 160, 230, 0.4), inset -7px -5px 14px rgba(2, 6, 16, 0.85);
}

.timeline__via {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-dim);
}

.timeline__role {
  font-size: 0.95rem;
  color: var(--ice);
  margin-top: 0.15rem;
}
.role__dates {
  font-size: 0.74rem;
  color: var(--text-dim);
  margin-left: 0.45rem;
  letter-spacing: 0.04em;
}

/* ---------- skill constellations ---------- */
.skills__hint {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  opacity: 0.7;
  margin: -1.6rem 0 0.8rem;
}

.constellation {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    radial-gradient(ellipse 60% 70% at 25% 30%, rgba(240, 168, 75, 0.05), transparent 70%),
    radial-gradient(ellipse 50% 60% at 75% 40%, rgba(158, 197, 255, 0.05), transparent 70%),
    var(--bg-card);
  overflow: hidden;
}
.constellation svg { display: block; width: 100%; height: auto; }

.constellation .c-line {
  stroke-width: 1;
  stroke-dasharray: 3 4;
  opacity: 0.5;
}
.constellation .c-star circle {
  cursor: default;
  transition: r 0.2s, filter 0.2s;
}
.constellation .c-star text {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--text-dim);
  transition: fill 0.2s;
  pointer-events: none;
}
.constellation .c-star:hover circle { filter: brightness(1.6) drop-shadow(0 0 6px currentColor); }
.constellation .c-star:hover text { fill: #f0f4fc; }
.constellation .c-group-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  opacity: 0.85;
}

/* chips become the mobile fallback */
@media (min-width: 881px) {
  .skills--chips { display: none; }
}
@media (max-width: 880px) {
  .constellation, .skills__hint { display: none; }
}

/* ---------- TARS ---------- */
.tars {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.7rem;
}

.tars__bot {
  display: flex;
  gap: 3px;
  padding: 6px;
  background: rgba(13, 19, 35, 0.85);
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.tars__bot:hover {
  border-color: rgba(240, 168, 75, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
}
.tars__bot span {
  width: 9px;
  height: 38px;
  border-radius: 2px;
  background: linear-gradient(180deg, #3a4763 0%, #1c2538 55%, #2c3850 100%);
  border: 1px solid rgba(148, 170, 220, 0.25);
  transition: transform 0.25s ease;
}
.tars__bot:hover span:nth-child(1) { transform: translateY(-3px); }
.tars__bot:hover span:nth-child(3) { transform: translateY(2px); }
.tars__bot:hover span:nth-child(4) { transform: translateY(-2px); }

.tars__bubble {
  max-width: 270px;
  background: rgba(13, 19, 35, 0.95);
  border: 1px solid rgba(240, 168, 75, 0.4);
  border-radius: 12px 12px 2px 12px;
  padding: 0.7rem 0.9rem;
  font-size: 0.74rem;
  line-height: 1.55;
  color: var(--text);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  animation: bubble-in 0.25s ease;
}
@keyframes bubble-in {
  from { opacity: 0; transform: translateY(6px) scale(0.97); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 640px) { .tars { display: none; } }

/* morse ring dim state */
.nav__logo-ring { transition: opacity 0.12s, box-shadow 0.12s; }
.nav__logo-ring.morse-off { opacity: 0.4; box-shadow: none; }

/* cards get tilt perspective */
.cards { perspective: 1100px; }
.card { transform-style: preserve-3d; will-change: transform; }

/* gargantua parallax vars */
.gargantua {
  transform: translateY(calc(-50% + var(--py, 0px))) translateX(var(--px, 0px));
  transition: transform 0.08s linear;
}

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  .about, .edu { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .timeline__item { grid-template-columns: 1fr; gap: 0.6rem; }
  .timeline__meta { flex-direction: row; display: flex; gap: 1rem; }
  .gargantua {
    right: -38%;
    opacity: 0.45;
    width: min(86vw, 460px);
  }
}

@media (max-width: 640px) {
  .nav__links { display: none; }
  .hero { min-height: 88vh; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__scroll, .gargantua__ring { animation: none; }
  .card:hover, .btn:hover { transform: none; }
}