/* =========================================================
   Rehan Ali Shah — portfolio
   Vanilla CSS. No build step, no framework.
   ========================================================= */

:root {
  /* redash palette — dark with coral-red accent */
  --bg: #1f1f1f;
  --bg-raise: #282828;
  --bg-inset: #171717;
  --ink: #ededeb;
  --muted: #b5b3b0;
  --faint: #8d8b88;
  --accent: #ff6b5e;
  --accent-deep: #d63a30;
  --accent-soft: rgba(255, 107, 94, 0.14);
  --mark: #e8a33d;
  --mark-soft: rgba(232, 163, 61, 0.16);
  --line: rgba(240, 240, 238, 0.14);
  --line-faint: rgba(240, 240, 238, 0.08);

  --display: 'Bricolage Grotesque', system-ui, sans-serif;
  --sans: 'Instrument Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Consolas, monospace;

  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  font-family: var(--display);
  line-height: 1.15;
  margin: 0;
}

p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

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

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

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

/* Skip link — visible only on keyboard focus. */
.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  z-index: 20;
  padding: 0.6rem 1rem;
  background: var(--bg-raise);
  border: 1px solid var(--accent);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 0.8rem;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0.75rem;
  text-decoration: none;
}

.page {
  max-width: 68rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.prompt {
  color: var(--accent);
}

.accent {
  color: var(--accent);
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-faint);
}

.nav-name {
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
}

.nav-name:hover {
  text-decoration: none;
  color: var(--accent);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.4rem;
  font-size: 0.8rem;
}

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

.nav-links a:hover {
  color: var(--accent);
  text-decoration: none;
}

/* ---------- hero ---------- */

.hero {
  padding: clamp(4rem, 12vh, 8rem) 0 clamp(3rem, 8vh, 5rem);
}

.hero-intro {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.75rem;
}

.hero-headline {
  font-size: clamp(2.1rem, 6.5vw, 4.4rem);
  font-weight: 640;
  letter-spacing: -0.02em;
  max-width: 18ch;
  min-height: 2.3em;
}

.filler {
  display: inline-block;
  white-space: pre;
  overflow: hidden;
  vertical-align: bottom;
  max-width: 7ch;
  color: var(--muted);
  font-weight: 400;
  transition:
    max-width 0.45s ease,
    opacity 0.45s ease,
    background-color 0.3s ease;
}

.filler.marked {
  background: var(--mark-soft);
  color: var(--mark);
  text-decoration: line-through;
  text-decoration-thickness: 2px;
}

.filler.trimmed {
  max-width: 0;
  opacity: 0;
}

.caret {
  display: inline-block;
  width: 0.5ch;
  height: 0.95em;
  margin-left: 0.08em;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

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

.trim-log {
  margin-top: 1.25rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--faint);
  transition: opacity 0.6s ease;
}

/* The reveal only exists when JS can undo it. */
.js .trim-log {
  opacity: 0;
}

.js .trim-log.show {
  opacity: 1;
}

.hero-sub {
  margin-top: 1.5rem;
  max-width: 46ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.25rem;
}

.btn {
  display: inline-block;
  background: none;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.65rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease;
}

.btn:hover {
  text-decoration: none;
  border-color: var(--accent);
  color: var(--accent);
}

.btn.primary {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  color: #fff;
  font-weight: 500;
}

.btn.primary:hover {
  background: color-mix(in srgb, var(--accent-deep) 88%, white);
  color: #fff;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.nav-toggle {
  padding: 0.45rem 0.9rem;
  font-size: 0.78rem;
}

/* ---------- simple view ---------- */

.simple-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
}

.simple-main {
  max-width: 42rem;
  margin: 0 auto;
  padding: clamp(3rem, 10vh, 6rem) 0 4rem;
}

.simple-name {
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  font-weight: 640;
  letter-spacing: -0.02em;
}

.simple-name-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
}

.simple-socials {
  display: flex;
  gap: 0.6rem;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  transition:
    border-color 0.2s ease,
    color 0.2s ease;
}

.icon-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.simple-role {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--accent);
}

.simple-desc {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.simple-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.simple-section {
  margin-top: 3rem;
}

.simple-heading {
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.simple-projects {
  display: grid;
  gap: 0.5rem;
}

.simple-projects li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem;
}

.simple-project-name {
  color: var(--ink);
  font-weight: 600;
  font-size: 1.05rem;
}

.simple-project-tag {
  color: var(--muted);
}

.simple-project-link {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--accent);
}

.simple-project-link:hover {
  text-decoration: underline;
}

.simple-skills {
  display: grid;
  gap: 0.5rem;
}

.simple-skills p {
  color: var(--muted);
  font-size: 0.95rem;
}

.simple-skills strong {
  color: var(--ink);
  font-weight: 600;
}

.simple-foot {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-faint);
  font-size: 0.82rem;
  color: var(--muted);
}

.simple-foot a {
  color: var(--muted);
}

.simple-foot a:hover {
  color: var(--accent);
}

/* ---------- sections ---------- */

.section {
  padding: clamp(3rem, 8vh, 5rem) 0;
  border-top: 1px solid var(--line-faint);
}

/* Sections are visible by default so the page reads fine without JS
   (and for crawlers). JS opts into the scroll reveal. */
.js .section {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

.js .section.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .js .section {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.eyebrow {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 2.25rem;
}

.eyebrow .stamp {
  color: var(--accent);
  letter-spacing: 0;
}

/* ---------- about ---------- */

.about {
  max-width: 42rem;
  display: grid;
  gap: 1.1rem;
  color: var(--muted);
}

.about .lede {
  color: var(--ink);
  font-size: 1.2rem;
}

.about strong {
  color: var(--ink);
  font-weight: 600;
}

/* ---------- projects ---------- */

.projects {
  display: grid;
  gap: 1.75rem;
}

.project {
  background: var(--bg-raise);
  border: 1px solid var(--line-faint);
  border-radius: 10px;
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.project-name {
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.project-tag {
  color: var(--muted);
  font-weight: 400;
  font-size: 1.15rem;
}

.project-meta {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.status.live {
  color: var(--accent);
}

.project-problem {
  margin-top: 1.25rem;
  max-width: 60ch;
  color: var(--muted);
}

.project-built {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-faint);
}

.built-item h4 {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.built-item p {
  font-size: 0.92rem;
  color: var(--muted);
}

.project-hard {
  margin-top: 1.5rem;
  padding: 0.9rem 1.1rem;
  background: var(--bg-inset);
  border-left: 2px solid var(--mark);
  border-radius: 0 6px 6px 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.hard-label {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mark);
  margin-bottom: 0.3rem;
}

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

.chip {
  font-size: 0.72rem;
  color: var(--muted);
  border: 1px solid var(--line-faint);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
}

/* ---------- experience ---------- */

.experience {
  display: grid;
  gap: 3rem;
}

.job {
  display: grid;
  grid-template-columns: 13rem 1fr;
  gap: 1.5rem;
}

.job-when {
  font-size: 0.8rem;
  color: var(--accent);
}

.job-where {
  color: var(--faint);
  margin-top: 0.35rem;
}

.job-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

.job-body .at {
  color: var(--muted);
  font-weight: 400;
}

.edu-line {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.job-points {
  margin-top: 1rem;
  display: grid;
  gap: 0.6rem;
}

.job-points li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.job-points li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
}

.job-points.certs li::before {
  content: '✓';
  font-size: 0.8rem;
}

/* ---------- skills ---------- */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.25rem;
}

.skill-group {
  border: 1px solid var(--line-faint);
  border-radius: 10px;
  padding: 1.25rem 1.4rem;
}

.skill-group h3 {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.skill-group p {
  font-size: 0.92rem;
  color: var(--muted);
}

.skill-group.learning {
  border-style: dashed;
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

/* ---------- footer ---------- */

.footer {
  display: grid;
  gap: 2rem;
}

.footer-pitch {
  max-width: 46rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.footer-headline {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 640;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.footer-headline a {
  color: var(--accent);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.footer-links a {
  color: var(--muted);
}

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

.footer-note {
  padding-top: 2rem;
  border-top: 1px solid var(--line-faint);
  font-size: 0.78rem;
  color: var(--faint);
}

/* ---------- 404 ---------- */

.notfound {
  max-width: 42rem;
  margin: 0 auto;
  padding: clamp(5rem, 18vh, 10rem) 0 6rem;
  display: grid;
  gap: 1.25rem;
}

.notfound h1 {
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  font-weight: 640;
  letter-spacing: -0.02em;
}

.notfound p {
  color: var(--muted);
}

/* ---------- responsive ---------- */

@media (max-width: 44rem) {
  .job {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .job-when {
    display: flex;
    gap: 1rem;
    align-items: baseline;
  }

  .job-where {
    margin-top: 0;
  }

  .nav-links {
    gap: 0.25rem 0.9rem;
    font-size: 0.75rem;
  }
}