/* ============================================================
   chrisalrahi.com - single-page site stylesheet
   Tokens carried over from the original FolioOne theme (main.css)
   ============================================================ */

:root {
  --bg: #101a20;
  --surface: #141f26;
  --text: #e7f2f7;
  --heading: #ffffff;
  --accent: #ac23ff;
  --contrast: #ffffff;
  --muted: color-mix(in srgb, #e7f2f7, transparent 30%);
  --border: color-mix(in srgb, #e7f2f7, transparent 88%);
  --accent-soft: color-mix(in srgb, #ac23ff, transparent 88%);
  /* AA-compliant tint (~6.6:1 on --bg) for accent-colored SMALL text; pure accent stays for large text/graphics */
  --accent-text: color-mix(in srgb, #ac23ff, #ffffff 40%);
  --heading-font: "Raleway", sans-serif;
  --body-font: "Roboto", sans-serif;
  --nav-font: "Poppins", sans-serif;
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--body-font);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  color: var(--heading);
  font-family: var(--heading-font);
  margin: 0 0 0.75rem;
  line-height: 1.2;
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: 0.3s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: min(1140px, 100% - 3rem);
  margin-inline: auto;
}

section {
  padding: 60px 0;
  scroll-margin-top: var(--header-h);
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 3.5rem;
  font-weight: 400;
  letter-spacing: -1px;
  margin-bottom: 0.5rem;
}

.section-title p {
  color: var(--muted);
  font-size: 1.125rem;
  max-width: 900px;
  margin: 0 auto;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: 50px;
  background: var(--accent);
  color: var(--contrast);
  font-family: var(--nav-font);
}

.skip-link:focus {
  top: 12px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 10px 26px;
  border-radius: 50px;
  border: 2px solid var(--accent);
  font-family: var(--nav-font);
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  transition: 0.3s ease;
}

.btn svg {
  flex: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--contrast);
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--accent), #ffffff 12%);
  border-color: color-mix(in srgb, var(--accent), #ffffff 12%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent), transparent 65%);
}

.btn-outline {
  background: transparent;
  color: var(--text);
}

.btn-outline:hover {
  background: var(--accent);
  color: var(--contrast);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent), transparent 65%);
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background-color: rgba(16, 26, 32, 0.9);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: var(--header-h);
}

.wordmark {
  font-family: var(--heading-font);
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--heading);
  white-space: nowrap;
}

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

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav ul a {
  position: relative;
  color: var(--text);
  font-family: var(--nav-font);
  font-size: 15px;
  padding: 4px 2px;
  white-space: nowrap;
}

.site-nav ul a::before {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  height: 2px;
  width: 0;
  background: var(--accent);
  visibility: hidden;
  transition: 0.3s ease;
}

.site-nav ul a:hover::before,
.site-nav ul a.active::before {
  visibility: visible;
  width: 25px;
}

.site-nav ul a:hover,
.site-nav ul a.active {
  color: var(--accent-text);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.nav-cta .btn {
  padding: 6px 20px;
}

.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--text);
}

.icon-link:hover {
  color: var(--contrast);
  background: var(--accent);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  color: var(--heading);
  cursor: pointer;
}

/* ---------- Hero ---------- */

.hero {
  display: flex;
  align-items: center;
  min-height: 100svh;
  padding: calc(var(--header-h) + 40px) 0 60px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.availability {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 6px 16px;
  border-radius: 50px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent), transparent 60%);
  color: var(--text);
  font-family: var(--nav-font);
  font-size: 0.8125rem;
  margin-bottom: 1.25rem;
}

.availability::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero h1 .highlight {
  color: var(--accent);
  position: relative;
  white-space: nowrap;
}

.hero h1 .highlight::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent), transparent 50%));
  border-radius: 2px;
}

.hero .tagline {
  font-size: 1.375rem;
  font-family: var(--heading-font);
  font-weight: 400;
  color: var(--heading);
  margin-bottom: 0.5rem;
}

.hero .subline {
  color: var(--muted);
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.875rem;
}

.hero-photo img {
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

/* ---------- Shared: tags, meta rows, links ---------- */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 0 0 1.25rem;
  list-style: none;
}

.tags li {
  padding: 4px 14px;
  border-radius: 50px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent), transparent 70%);
  font-family: var(--nav-font);
  font-size: 0.75rem;
  color: var(--text);
}

.meta {
  margin: 0 0 1.25rem;
}

.meta div {
  display: flex;
  gap: 0.625rem;
  margin-bottom: 0.5rem;
}

.meta dt {
  flex: none;
  width: 76px;
  font-family: var(--nav-font);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent-text);
  padding-top: 3px;
}

.meta dd {
  margin: 0;
  font-size: 0.9375rem;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.project-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--nav-font);
  font-size: 0.875rem;
  color: var(--text);
  border-bottom: 1px solid color-mix(in srgb, var(--accent), transparent 50%);
  padding-bottom: 2px;
}

.project-links a:hover {
  color: var(--accent-text);
  border-bottom-color: var(--accent);
  transform: translateY(-2px);
}

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

.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
  padding: 3rem 0;
  scroll-margin-top: var(--header-h);
}

.feature + .feature {
  border-top: 1px solid var(--border);
}

.feature:nth-child(even) .feature-media {
  order: 2;
}

.feature-media {
  border-radius: 20px;
  overflow: hidden;
  background: var(--surface);
}

.feature-media img {
  width: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.feature-media:hover img {
  transform: scale(1.05);
}

.feature-media.duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  background: none;
  overflow: visible;
}

.feature-media.duo figure {
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  background: var(--surface);
  display: flex;
  align-items: center;
}

.feature h3 {
  font-size: 1.875rem;
  font-weight: 700;
}

.feature .hook {
  font-size: 1.0625rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

/* ---------- Small project cards ---------- */

.more-title {
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: -0.5px;
  text-align: center;
  margin: 3.5rem 0 0.5rem;
}

.more-sub {
  text-align: center;
  color: var(--muted);
  margin-bottom: 2rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--surface);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.card-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.card:hover .card-media img {
  transform: scale(1.1);
}

.card-media.collage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 2px;
}

/* min-width/height 0 override the grid items' intrinsic minimum so all
   four quadrants stay inside the fixed-aspect box instead of clipping */
.card-media.collage img {
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  object-fit: cover;
}

.card-body {
  padding: 1.25rem 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  flex: 1;
}

.card h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.card p {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.card .tags {
  margin: auto 0 0;
}

/* ---------- Experience ---------- */

.xp-list {
  max-width: 860px;
  margin: 0 auto;
}

.xp {
  position: relative;
  padding: 0 0 2rem 2rem;
  border-left: 2px solid var(--border);
}

.xp:last-of-type {
  padding-bottom: 0.5rem;
}

.xp::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px color-mix(in srgb, var(--accent), transparent 40%);
}

.xp-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.375rem 1rem;
  margin-bottom: 0.375rem;
}

.xp h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  margin: 0;
}

.xp .when {
  font-family: var(--nav-font);
  font-size: 0.8125rem;
  color: var(--muted);
}

.xp p {
  color: var(--muted);
  font-size: 0.9375rem;
  margin: 0;
}

.edu {
  margin: 2.5rem auto 0;
  max-width: 860px;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border-radius: 10px;
  border: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.edu p {
  margin: 0;
  font-size: 0.9375rem;
}

.edu strong {
  color: var(--heading);
}

/* ---------- About ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
  max-width: 1000px;
  margin: 0 auto;
}

.about-grid h2 {
  font-size: 2.5rem;
  font-weight: 300;
  letter-spacing: -1px;
  margin-bottom: 1.25rem;
}

.about-grid .lede {
  font-size: 1.0625rem;
}

.about-photo img {
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

/* ---------- Contact ---------- */

.contact-block {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.contact-block p {
  color: var(--muted);
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.contact-form {
  max-width: 720px;
  margin: 2.5rem auto 0;
}

.contact-form .form-intro {
  text-align: center;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.contact-form .form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-form .full {
  grid-column: 1 / -1;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--body-font);
  font-size: 0.9375rem;
  transition: border-color 0.3s ease;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--muted);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form .form-actions {
  text-align: center;
  margin-top: 1.25rem;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.875rem;
}

.site-footer p {
  margin: 0;
}

/* ---------- Scroll top ---------- */

.scroll-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 90;
  width: 44px;
  height: 44px;
  border-radius: 50px;
  background: var(--accent);
  color: var(--contrast);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: 0.3s ease;
}

.scroll-top.show {
  opacity: 1;
  visibility: visible;
}

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

/* ---------- Reveal animation ---------- */

/* Hidden state only applies when JS is running (html.js set inline in <head>) */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js .reveal.visible {
  opacity: 1;
  transform: none;
}

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

  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ---------- Breakpoints ---------- */

@media (max-width: 1199px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem 1.5rem 1.75rem;
    background: rgba(16, 26, 32, 0.97);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    display: none;
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .site-nav ul a {
    display: block;
    padding: 0.75rem 0;
    font-size: 17px;
  }

  .nav-cta {
    margin-top: 1rem;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section-title h2 {
    font-size: 2.5rem;
  }

  .hero {
    min-height: 0;
  }

  .hero-grid,
  .feature,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-grid .hero-photo {
    order: -1;
  }

  .hero-photo img {
    max-width: min(320px, 100%);
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .feature {
    padding: 2.5rem 0;
  }

  .feature:nth-child(even) .feature-media {
    order: 0;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .about-grid h2 {
    font-size: 2rem;
  }

  .about-photo {
    order: -1;
  }

  .about-photo img {
    max-width: min(340px, 100%);
  }

  .contact-form .form-grid {
    grid-template-columns: 1fr;
  }
}