/* ==========================================================================
   Syed Yaseen — Portfolio Stylesheet
   Table of contents:
     1. Reset & base
     2. Navigation
     3. Hero
     4. Marquee
     5. Section shell (shared heading/reveal styles)
     6. About
     7. Experience timeline
     8. Projects
     9. Stack
     10. Education
     11. Contact
     12. Footer
     13. Keyframes & motion preferences
   ========================================================================== */

/* 1. Reset & base
   ========================================================================== */
:root {
  --ink: #151311;
  --surface: #1e1b18;
  --hairline: rgba(255, 255, 255, 0.09);
  --fg: #f3efe9;
  --muted: #a9a49c;
  --ember: #f0a24a;
  --ember-ink: #231a10;
  --maxw: 64rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--ink);
  color: var(--fg);
  font-family: "DM Sans", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: -0.02em;
  font-weight: 500;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: var(--ember);
  color: var(--ember-ink);
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  width: 100%;
  padding: 0 1.5rem;
}

@media (min-width: 768px) {
  .wrap {
    padding: 0 2.5rem;
  }
}

/* Shared underline hover effect (nav links, footer link, ghost CTA) */
.ul {
  position: relative;
}

.ul::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  height: 1px;
  width: 100%;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.ul:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Shared label style used by <dt> (About facts) and .k (Contact cards) */
dt,
.k {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ember);
  margin-bottom: 0.35rem;
  display: block;
}

/* Shared meta text style (dates, locations, footer copy) */
.meta {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
}

/* Shared "arrow" icon used on links/cards/projects */
.arrow {
  width: 20px;
  height: 20px;
  stroke: var(--muted);
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: 0.5s;
}

/* Scroll-reveal animation base state */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.vis {
  opacity: 1;
  transform: none;
}

/* 2. Navigation
   ========================================================================== */
header.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background 0.5s, border-color 0.5s;
  border-bottom: 1px solid transparent;
}

header.nav.scrolled {
  background: rgba(21, 19, 17, 0.8);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--hairline);
}

.navbar {
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.875rem;
}

.dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 99px;
  background: var(--ember);
  position: relative;
}

.dot::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 99px;
  background: var(--ember);
  animation: ember 6s ease-in-out infinite;
}

nav.links {
  display: none;
  gap: 2rem;
}

@media (min-width: 768px) {
  nav.links {
    display: flex;
  }
}

nav.links a,
.ghost {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
  transition: color 0.3s;
}

nav.links a:hover {
  color: var(--fg);
}

/* Scroll progress bar */
#bar {
  height: 1px;
  background: var(--ember);
  width: 0;
}

/* 3. Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding: 8rem 0 4rem;
  overflow: hidden;
}

.atmos {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.grid {
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image: linear-gradient(var(--hairline) 1px, transparent 1px),
    linear-gradient(90deg, var(--hairline) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 80% at 50% 0%, #000, transparent);
  mask-image: radial-gradient(120% 80% at 50% 0%, #000, transparent);
}

.glow {
  position: absolute;
  border-radius: 99px;
  filter: blur(120px);
  animation: drift 18s ease-in-out infinite;
}

.glow.a {
  right: -8rem;
  top: -8rem;
  width: 36rem;
  height: 36rem;
  background: rgba(240, 162, 74, 0.1);
}

.glow.b {
  left: -6rem;
  bottom: -10rem;
  width: 28rem;
  height: 28rem;
  background: rgba(240, 190, 140, 0.06);
}

.eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--ember);
}

h1 {
  font-size: clamp(3.1rem, 11vw, 7.5rem);
  line-height: 0.92;
  margin-top: 2rem;
}

h1 .line {
  display: block;
  overflow: hidden;
}

h1 .line > span {
  display: block;
  animation: rise 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}

h1 .dim {
  color: var(--muted);
}

.caret {
  display: inline-block;
  width: 0.06em;
  height: 0.7em;
  background: var(--ember);
  vertical-align: middle;
  margin-left: 0.15em;
  animation: blink 1.2s steps(1) infinite;
}

.herogrid {
  display: grid;
  gap: 2.5rem;
  margin-top: 3rem;
}

@media (min-width: 768px) {
  .herogrid {
    grid-template-columns: 1.2fr 1fr;
    align-items: end;
  }
}

.lede {
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 99px;
  padding: 0.85rem 1.6rem;
  font-size: 0.9rem;
  font-weight: 500;
  background: var(--ember);
  color: var(--ember-ink);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.btn.outline {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--hairline);
}

.btn:hover {
  transform: translateY(-4px);
}

.socials {
  display: flex;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.socials a {
  color: var(--muted);
  transition: color 0.3s;
}

.socials a:hover {
  color: var(--ember);
}

.socials svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* 4. Marquee
   ========================================================================== */
.marquee {
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  background: rgba(30, 27, 24, 0.4);
  padding: 1.15rem 0;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    #000 12%,
    #000 88%,
    transparent
  );
  mask-image: linear-gradient(
    to right,
    transparent,
    #000 12%,
    #000 88%,
    transparent
  );
}

.marquee .track {
  display: flex;
  gap: 2.5rem;
  width: max-content;
  align-items: center;
  animation: marq 32s linear infinite;
  white-space: nowrap;
}

.marquee span.i {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.marquee i {
  width: 4px;
  height: 4px;
  border-radius: 99px;
  background: rgba(240, 162, 74, 0.6);
  display: inline-block;
}

/* 5. Section shell
   ========================================================================== */
section.s {
  border-top: 1px solid var(--hairline);
  padding: 6rem 0;
}

@media (min-width: 768px) {
  section.s {
    padding: 8rem 0;
  }
}

.head {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.head .no {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--ember);
}

.head h2 {
  font-size: clamp(1.9rem, 5vw, 3rem);
}

.head .rule {
  flex: 1;
  height: 1px;
  background: var(--hairline);
  margin-left: auto;
  display: none;
}

@media (min-width: 768px) {
  .head .rule {
    display: block;
  }
}

/* 6. About
   ========================================================================== */
.about {
  display: grid;
  gap: 3.5rem;
}

@media (min-width: 768px) {
  .about {
    grid-template-columns: 1.15fr 1fr;
  }
}

.about p {
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.about p.lead {
  color: var(--fg);
}

dl.facts {
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

dl.facts > div {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--hairline);
}

dl.facts > div:last-child {
  border-bottom: 0;
}

dd {
  font-size: 0.95rem;
}

/* 7. Experience timeline
   ========================================================================== */
ol.tl {
  list-style: none;
  border-left: 1px solid var(--hairline);
  padding-left: 2rem;
  position: relative;
}

@media (min-width: 768px) {
  ol.tl {
    padding-left: 3rem;
  }
}

ol.tl li {
  position: relative;
  padding-bottom: 3.5rem;
}

ol.tl li:last-child {
  padding-bottom: 0;
}

ol.tl li .pin {
  position: absolute;
  left: -2.28rem;
  top: 0.55rem;
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: var(--ember);
}

@media (min-width: 768px) {
  ol.tl li .pin {
    left: -3.28rem;
  }
}

.role {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

@media (min-width: 768px) {
  .role {
    flex-direction: row;
    justify-content: space-between;
    align-items: baseline;
  }
}

.role h3 {
  font-size: 1.3rem;
}

.role h3 em {
  font-style: normal;
  color: var(--ember);
}

ul.pts {
  list-style: none;
  margin-top: 1.5rem;
  display: grid;
  gap: 0.75rem;
}

ul.pts li {
  display: flex;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

ul.pts li::before {
  content: "";
  margin-top: 0.65rem;
  width: 1rem;
  height: 1px;
  background: rgba(240, 162, 74, 0.7);
  flex: none;
}

/* 8. Projects
   ========================================================================== */
.projects {
  border-top: 1px solid var(--hairline);
}

.proj {
  display: grid;
  gap: 1.5rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--hairline);
  transition: background 0.5s;
}

@media (min-width: 768px) {
  .proj {
    grid-template-columns: auto 1fr auto;
    gap: 2.5rem;
    align-items: start;
    padding: 3rem 0;
  }
}

.proj:hover {
  background: rgba(30, 27, 24, 0.6);
}

.proj .no {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--ember);
}

.proj h3 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.proj:hover h3 {
  transform: translateX(4px);
}

.proj p {
  margin-top: 1rem;
  max-width: 42rem;
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.98rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.tag {
  border: 1px solid var(--hairline);
  border-radius: 99px;
  padding: 0.25rem 0.75rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  transition: 0.3s;
}

.proj:hover .tag {
  border-color: rgba(240, 162, 74, 0.4);
  color: var(--fg);
}

.side {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .side {
    flex-direction: column;
    align-items: flex-end;
  }
}

.proj:hover .arrow {
  stroke: var(--ember);
  transform: translate(3px, -3px);
}

/* 9. Stack
   ========================================================================== */
.stack {
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: 0.5rem;
  overflow: hidden;
}

@media (min-width: 640px) {
  .stack {
    grid-template-columns: 1fr 1fr;
  }
}

.cell {
  background: var(--ink);
  padding: 1.75rem;
  transition: background 0.5s;
}

@media (min-width: 768px) {
  .cell {
    padding: 2.25rem;
  }
}

.cell:hover {
  background: var(--surface);
}

.cell h3 {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ember);
  font-weight: 500;
}

.cell ul {
  list-style: none;
  margin-top: 1.25rem;
  display: grid;
  gap: 0.65rem;
}

.cell li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.3s;
}

.cell li::before {
  content: "";
  width: 12px;
  height: 1px;
  background: var(--hairline);
  transition: 0.3s;
}

.cell li:hover {
  color: var(--fg);
}

.cell li:hover::before {
  width: 24px;
  background: var(--ember);
}

/* 10. Education
   ========================================================================== */
.edu {
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.edu .row {
  padding: 2rem 0;
  border-bottom: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.edu .row:last-child {
  border-bottom: 0;
}

@media (min-width: 768px) {
  .edu .row {
    flex-direction: row;
    justify-content: space-between;
    align-items: baseline;
  }
}

.edu h3 {
  font-size: 1.35rem;
}

.edu .sub {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 0.25rem;
}

/* 11. Contact
   ========================================================================== */
.contact {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--hairline);
  padding: 7rem 0;
}

@media (min-width: 768px) {
  .contact {
    padding: 10rem 0;
  }
}

.contact h2 {
  font-size: clamp(2.25rem, 7vw, 4.5rem);
  line-height: 1.02;
  max-width: 48rem;
  margin-top: 2rem;
}

.contact .glow {
  left: 50%;
  transform: translateX(-50%);
  bottom: -10rem;
  width: 30rem;
  height: 30rem;
  background: rgba(240, 162, 74, 0.1);
}

.ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 3rem;
}

.cards {
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: 0.5rem;
  overflow: hidden;
  margin-top: 4rem;
}

@media (min-width: 640px) {
  .cards {
    grid-template-columns: 1fr 1fr;
  }
}

.card {
  background: var(--ink);
  padding: 1.5rem;
  transition: background 0.5s;
}

@media (min-width: 768px) {
  .card {
    padding: 2rem;
  }
}

.card:hover {
  background: var(--surface);
}

.card .val {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
  font-size: 1.05rem;
}

.card:hover .arrow {
  stroke: var(--ember);
  transform: translate(3px, -3px);
}

/* 12. Footer
   ========================================================================== */
footer {
  border-top: 1px solid var(--hairline);
  padding: 2.5rem 0;
}

footer .inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (min-width: 640px) {
  footer .inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* 13. Keyframes & motion preferences
   ========================================================================== */
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(110%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes blink {
  0%,
  45% {
    opacity: 1;
  }
  50%,
  95% {
    opacity: 0;
  }
}

@keyframes marq {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@keyframes drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(2%, -3%, 0);
  }
}

@keyframes ember {
  0%,
  100% {
    opacity: 0.35;
    transform: scale(1);
  }
  50% {
    opacity: 0.65;
    transform: scale(1.12);
  }
}

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