/* =============================================================================
   asadchattha.com — v3

   A faithful rebuild of the v3.brittanychiang.com layout with Muhammad Asad's
   content. The original is Jekyll + SCSS + gulp; this is plain static CSS, but
   the partial order, the class names and the breakpoint ladder are kept so the
   lineage stays readable:

     globals · fonts · base · switch · intro · skills · experience
     employment-status · featured-projects · other-projects · footer

   Breakpoints, all max-width, exactly as in _scss/partials/_globals.scss:
     1280 thirteen · 1024 desktop · 850 little-desktop · 768 tablet
     630 weird-medium · 550 phablet · 480 mobile · 360 small-mobile
     330 tiny-mobile

   NOTE: there is deliberately NO heading margin reset. The original relies on
   UA-default h1/h2/h3 margins, and the intro's `justify-content: space-around`
   spacing is wrong without them.
   ========================================================================== */

/* ------------------------------------------------------------------ globals */
:root {
  --night: #171c28;
  --black: #36363c;
  --dark-grey: #444452;
  --blue: #007bff;
  --slate: #afafbf;
  --off-white: #e7e7e7;
  --white: #ffffff;
  --green: #bae67e;
  --yellow: #ffdc00;

  /* Apercu is a retail licence. Hanken Grotesk is the substitute, chosen by
     measuring rendered ink rather than by eye: against Apercu on the same
     string, Hanken 300 is +2.2% ink / -0.7% width and Hanken 700 is +1.4% /
     -2.1%. Work Sans, the previous pick, was +14.1% ink at 300 — that is why
     the body read heavy and near-black and why bold looked like another
     family. Because the match holds at the SAME weight numbers, every rule
     below keeps her exact 300/400/500/700 values. */
  --font-stack: 'Hanken Grotesk', system-ui, -apple-system, BlinkMacSystemFont, Roboto,
    Helvetica, Arial, sans-serif;
  --mono: 'Inconsolata', monospace;
}

/* --------------------------------------------------------------------- base */
html {
  box-sizing: border-box;
}

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

::selection {
  background: var(--yellow);
}

html,
body {
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--white);
  color: var(--dark-grey);
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.5;
  width: 100%;
}

body.night {
  background-color: var(--night);
  color: var(--slate);
}

body.night ::selection {
  color: var(--black);
  background: var(--yellow);
}

body.night a,
body.night strong,
body.night .intro,
body.night .skills .skillz__category__label,
body.night .experience .job__time,
body.night .footer__copyright,
body.night .status {
  color: var(--off-white);
}

body.night .section__content .underline-link:after {
  background: var(--off-white);
}

a {
  transition: all 0.2s ease-in-out;
  text-decoration: none;
  font-weight: 700;
  color: inherit;
}

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

img {
  max-width: 100%;
  vertical-align: middle;
}

strong {
  font-weight: 700;
  color: var(--black);
}

/* Emoji-as-punctuation. The same Apple emoji PNGs the original ships in
   img/emojis/, painted as background-images on a span exactly as it did. */
.emoji {
  display: inline-block;
  vertical-align: text-top;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.section {
  display: flex;
  justify-content: center;
  padding: 100px 170px;
}

.section__title {
  flex-shrink: 0;
  width: 200px;
  margin: 0 70px 0 0;
  color: var(--blue);
  font-size: 1rem;
  text-transform: uppercase;
  text-align: right;
  font-weight: 700;
  letter-spacing: 2px;
}

.section__content {
  font-weight: 300;
  font-size: 1rem;
  width: 100%;
  max-width: 650px;
}

.section__content p {
  margin-top: 0;
  margin-bottom: 25px;
}

.section__content .underline-link {
  position: relative;
  display: inline-block;
}

.section__content .underline-link:after {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--black);
  content: '';
  opacity: 0;
  transition: height 0.3s, opacity 0.3s, transform 0.3s;
  transform: translateY(-5px);
}

.section__content .underline-link:hover:after,
.section__content .underline-link:focus:after {
  height: 2px;
  border-radius: 3px;
  opacity: 1;
  transform: translateY(-2px);
}

/* The chevron is a mask rather than a background image so it can be recoloured,
   but it is painted --blue, not currentColor: the original's arrow.png is a flat
   #007fff arrow and stays blue in BOTH themes. Inheriting currentColor made it
   read as body text in light and off-white in night, which is not her mark. */
.arrow-link {
  transition: all 0.2s ease-in-out;
  font-weight: 700;
  display: inline-block;
  background-color: transparent;
  white-space: nowrap;
}

.arrow-link:after {
  transition: all 0.2s ease-in-out;
  position: relative;
  bottom: 2px;
  margin-left: 15px;
  content: '';
  width: 15px;
  height: 15px;
  display: inline-block;
  vertical-align: middle;
  background-color: var(--blue);
  -webkit-mask: url('../img/arrow.svg') no-repeat center / 100%;
  mask: url('../img/arrow.svg') no-repeat center / 100%;
}

.arrow-link:hover:after,
.arrow-link:focus:after {
  transform: translateX(7px);
}

/* Her small print style. Nothing in this page uses it yet; it is carried over so
   the base layer stays a complete port of _base.scss. */
.small {
  font-family: var(--mono);
  font-size: 0.85rem;
  display: inline-block;
  margin-top: 15px;
}

.small:after {
  display: none;
}

#top-button {
  transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out,
    transform 0.2s ease-in-out;
  background: transparent;
  border: none;
  padding: 0;
  width: 40px;
  position: fixed;
  bottom: 25px;
  right: 10px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  z-index: 10;
}

#top-button.is-visible {
  opacity: 1;
  visibility: visible;
}

#top-button:hover,
#top-button:focus-visible {
  transform: translateY(-10px);
}

#top-button img {
  width: 100%;
}

/* Scroll reveal. These two rules were already in the original's _base.scss as an
   unused `.waypoint` / `.in-view` pair; the shipped site drove the same effect
   through an unversioned ScrollReveal CDN script. IntersectionObserver in
   js/main.js now adds `.in-view` with the original's own easing and offset. */
.waypoint {
  opacity: 0;
  transform: translate3d(0, 20px, 0);
  transition: opacity 0.6s cubic-bezier(0.694, 0, 0.335, 1),
    transform 0.6s cubic-bezier(0.694, 0, 0.335, 1);
}

.in-view {
  opacity: 1;
  transform: translateZ(0);
}

/* Nothing may stay invisible if the observer never runs or motion is unwanted. */
html.no-js .waypoint {
  opacity: 1;
  transform: none;
}

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

/* ------------------------------------------------------------------- switch */
.switch-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  top: 20px;
  right: 30px;
  z-index: 10;
}

.switch-wrapper .sun,
.switch-wrapper .moon {
  width: 17px;
  height: 17px;
}

.switch-wrapper .sun {
  background: url('../img/switch/sun.svg') no-repeat center;
  background-size: 100%;
}

.switch-wrapper .moon {
  background: url('../img/switch/moon.svg') no-repeat center;
  background-size: 100%;
}

body.night .switch-wrapper .sun {
  background: url('../img/switch/sun-white.svg') no-repeat center;
  background-size: 100%;
}

body.night .switch-wrapper .moon {
  background: url('../img/switch/moon-white.svg') no-repeat center;
  background-size: 100%;
}

.switch-wrapper .toggle-wrapper {
  margin: 10px;
}

.switch-wrapper #switch {
  height: 0;
  width: 0;
  visibility: hidden;
  position: absolute;
}

.switch-wrapper #switch:checked + label {
  background: var(--green);
}

.switch-wrapper #switch:checked + label:after {
  left: calc(100% - 3px);
  transform: translateX(-100%);
}

/* The input is visually hidden, so the focus ring has to be drawn on the rail. */
.switch-wrapper #switch:focus-visible + label {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.switch-wrapper label {
  cursor: pointer;
  text-indent: -9999px;
  width: 45px;
  height: 25px;
  background: grey;
  display: block;
  border-radius: 100px;
  position: relative;
}

.switch-wrapper label:after {
  transition: all 0.2s ease-in-out;
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 19px;
  height: 19px;
  background: #fff;
  border-radius: 100%;
}

/* -------------------------------------------------------------------- intro */
/* min-height, not height. The original's `height: 100vh` clips its own content
   on a short viewport, and three lines of tagline copy make that worse. */
.intro {
  padding: 120px 100px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  max-width: 1440px;
  margin: 0 auto;
}

.intro__hello,
.intro__tagline {
  font-size: 2.5rem;
  font-weight: 300;
}

.intro__hello .emoji,
.intro__tagline .emoji {
  width: 40px;
  height: 40px;
}

.intro__hello .wave-hand {
  background-image: url('../img/emojis/wave.png');
  margin-left: 10px;
  cursor: pointer;
}

.intro__hello .wave-hand.animated {
  animation-duration: 1s;
  animation-fill-mode: both;
}

.intro__hello .wave-hand.wave {
  animation-name: wave;
}

@keyframes wave {
  from { transform: none; }
  15%  { transform: translate3d(-20%, 0, 0) rotate3d(0, 0, 1, -10deg); }
  30%  { transform: translate3d(10%, 0, 0) rotate3d(0, 0, 1, 7deg); }
  45%  { transform: translate3d(-15%, 0, 0) rotate3d(0, 0, 1, -10deg); }
  60%  { transform: translate3d(10%, 0, 0) rotate3d(0, 0, 1, 5deg); }
  75%  { transform: translate3d(-5%, 0, 0) rotate3d(0, 0, 1, -2deg); }
  to   { transform: none; }
}

.intro__tagline {
  max-width: 700px;
}

.intro__tagline .name {
  font-weight: 700;
}

.intro__tagline .technologist {
  background-image: url('../img/emojis/technologist-man.png');
}

.intro__contact {
  font-size: 1.25rem;
  font-weight: 400;
}

.intro__contact .emoji.pointer {
  background-image: url('../img/emojis/pointright.png');
  width: 30px;
  height: 30px;
  margin: 0 5px;
  vertical-align: text-bottom;
}

/* The signature interaction: a highlighter wiping up over the address, not a
   text-decoration. :focus is added here — the original has no keyboard state at
   all, so the one interactive element in the hero was invisible to a tab user. */
.intro__contact .highlight-link {
  transition: all 0.2s ease-in-out;
  font-weight: 400;
  text-decoration: none;
  display: inline-block;
  padding: 2px 3px;
  box-shadow: inset 0 -3px 0 var(--blue);
}

.intro__contact .highlight-link:hover,
.intro__contact .highlight-link:focus-visible {
  box-shadow: inset 0 -33px 0 0 var(--blue);
  color: var(--white);
  outline: none;
}

body.night .intro__contact .highlight-link:hover,
body.night .intro__contact .highlight-link:focus-visible {
  color: var(--white);
}

/* ------------------------------------------------------------------- skills */
.skills .skillz {
  display: flex;
  justify-content: space-between;
}

.skills .skillz__category__label {
  font-weight: 700;
  color: var(--black);
  text-transform: uppercase;
  font-size: 1rem;
  /* Her label is a <div>; this is an <h3>, so the UA heading margin has to be
     taken back off to land in the same place. */
  margin: 0;
}

.skills .skillz__category__item {
  margin: 3px 0;
  font-size: 0.9rem;
  /* DeviceActivityMonitor is one 21-character word and the columns go to 47%
     below 630px. Without this it walks straight over the next column. */
  overflow-wrap: break-word;
}

/* --------------------------------------------------------------- experience */
.experience .jobs {
  margin-bottom: 100px;
}

.experience .job {
  margin-bottom: 25px;
}

.experience .job .time-place {
  display: flex;
  justify-content: space-between;
}

.experience .job__company {
  font-weight: 700;
}

.experience .job__time {
  font-size: 0.9rem;
  font-family: var(--mono);
}

.experience .arrow-link {
  font-size: 1.25rem;
}

.experience .arrow-link:after {
  width: 20px;
  height: 20px;
}

/* -------------------------------------------------------- employment status */
/* Present but commented out in the original (_includes/background.html). Wired
   up here for the relocation line. `position: relative` on the light is a fix,
   not a port: the ring and the LED are absolutely positioned with no positioned
   ancestor in the original, so they would have flown to the page corner. */
/* The whole row is the link. `align-items: center` centred the light against
   the WHOLE block, so once the sentence wrapped to two or three lines on a
   phone the dot floated in the middle with text beside and above it. Aligned
   to the top and nudged onto the first line's optical centre instead. */
.status {
  display: flex;
  align-items: flex-start;
  font-size: 1.1rem;
  margin-top: 70px;
}

.status__cta {
  white-space: nowrap;
  border-bottom: 1px solid currentColor;
}

@media (max-width: 550px) {
  .status { font-size: 1rem; }
}

.status__light {
  position: relative;
  width: 30px;
  /* matches the first line box so the dot sits beside line one, not the block */
  height: 1.5em;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.status__light__ring {
  position: absolute;
  width: 25px;
  height: 25px;
  animation: pulsate 2s ease-out;
  animation-iteration-count: infinite;
  opacity: 0;
  border: 3px solid var(--green);
  border-radius: 30px;
}

@keyframes pulsate {
  0%   { transform: scale(0.1, 0.1); opacity: 0; }
  50%  { opacity: 1; }
  100% { transform: scale(1.2, 1.2); opacity: 0; }
}

.status__light__led {
  position: absolute;
  width: 13px;
  height: 13px;
  background: var(--green);
  border-radius: 100%;
}

.status__message {
  margin-left: 15px;
}

@media (prefers-reduced-motion: reduce) {
  .status__light__ring {
    animation: none;
    opacity: 0.6;
  }
}

/* -------------------------------------------------- featured projects */
.featured-projects a:after {
  display: none;
}

.featured-projects .project {
  display: flex;
  margin-bottom: 100px;
  margin-left: -5%;
  width: 125%;
}

.featured-projects .project:last-of-type {
  margin-bottom: 0;
}

.featured-projects .project__pic {
  max-width: 700px;
  overflow: visible;
  margin: 0;
}

.featured-projects .project__pic a {
  display: block;
}

/* Three devices pulled into one row. The negative margins overlap the CANVASES,
   not the devices: each plate carries ~19% transparent padding per side (see
   tools/build_devices.py), which is more clear space than the overlap consumes. */
.featured-projects .project__pic.phones a {
  display: flex;
  justify-content: space-between;
}

.featured-projects .project__pic.phones .phone {
  margin: 0 -7%;
}

.featured-projects .project__pic.phones .phone:first-of-type {
  margin-left: -5%;
}

.featured-projects .project__pic img {
  width: 100%;
  max-width: 100%;
  /* The intrinsic width/height attributes are there to reserve space and stop
     the row jumping as the WebP loads. They also land as presentational
     height:900px, which would stretch every device once width goes fluid, so
     the height has to be handed back to the aspect ratio. */
  height: auto;
  vertical-align: bottom;
}

.featured-projects .project__caption {
  width: 125px;
  flex-shrink: 0;
  margin-left: 30px;
}

.featured-projects .project__name {
  margin-bottom: 10px;
}

.featured-projects .project__name a {
  font-weight: 700;
}

.featured-projects .project p {
  font-size: 0.85rem;
  line-height: 1.3;
}

/* ------------------------------------------------------------ other projects */
.other-projects .project {
  max-width: 600px;
  margin-bottom: 50px;
}

.other-projects .project:last-of-type {
  margin-bottom: 0;
}

.other-projects .project__name {
  margin-bottom: 10px;
}

.other-projects .project p {
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.other-projects .project__used__item {
  display: inline-block;
  margin: 3px 3px 3px 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 3px;
  color: var(--blue);
  border: 1px solid var(--blue);
  background: transparent;
}

.other-projects .project__used__item:first-of-type {
  margin-left: 0;
}

/* ------------------------------------------------------------------- footer */
.footer {
  padding: 50px 80px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__copyright {
  font-weight: 700;
  font-size: 16px;
  /* Hers is 200px, which is exactly wide enough for "Brittany Chiang 🤘 2018".
     "Muhammad Asad 🤘 2026" is a few px longer and broke onto a third line, so
     the box is widened rather than the line rewritten. */
  width: 215px;
}

.footer__copyright .emoji {
  width: 20px;
  height: 20px;
  margin: 0 3px;
  vertical-align: text-bottom;
}

.footer__links a {
  position: relative;
  display: inline-block;
  color: var(--blue) !important;
  text-transform: uppercase;
  font-weight: 700;
  margin: 0 15px;
}

.footer__links a:after {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--blue);
  content: '';
  opacity: 0;
  transition: height 0.3s, opacity 0.3s, transform 0.3s;
  transform: translateY(-5px);
}

.footer__links a:hover:after,
.footer__links a:focus:after {
  height: 2px;
  border-radius: 3px;
  opacity: 1;
  transform: translateY(0px);
}

.footer__links .text {
  font-size: 0.9rem;
  display: inline;
  letter-spacing: 1px;
}

.footer__links img {
  display: none;
  width: 22px;
}

/* ============================== breakpoints ============================== */

/* 1280 — thirteen */
@media screen and (max-width: 1280px) {
  .section {
    padding: 100px;
  }
  .featured-projects .project {
    width: 115%;
  }
}

/* 1024 — desktop */
@media screen and (max-width: 1024px) {
  .section {
    padding: 50px;
  }
  .section__title {
    margin-right: 50px;
  }
  .intro__hello,
  .intro__tagline {
    font-size: 2.25rem;
  }
  .intro__hello .emoji,
  .intro__tagline .emoji {
    width: 35px;
    height: 35px;
  }
  .featured-projects .project {
    width: 105%;
  }
  .footer {
    padding: 50px;
  }
  .footer__links a {
    margin: 0 10px;
  }
  #top-button {
    bottom: 20px;
    right: 7px;
    width: 35px;
  }
}

/* 850 — little-desktop. The footer trades text labels for marks here. */
@media screen and (max-width: 850px) {
  .section__title {
    width: 150px;
  }
  .footer__links a:after {
    display: none;
  }
  .footer__links .text {
    display: none;
  }
  .footer__links img {
    display: inline-block;
  }
}

/* 768 — tablet. The two-column section becomes a stack. */
@media screen and (max-width: 768px) {
  .section {
    display: block;
  }
  .section__title {
    text-align: left;
    width: auto;
    margin-right: 0;
  }
  .section__content {
    padding-top: 30px;
    padding-left: 50px;
  }
  .intro__hello,
  .intro__tagline {
    font-size: 2rem;
  }
  .intro__hello .emoji,
  .intro__tagline .emoji {
    width: 30px;
    height: 30px;
  }
  .featured-projects .project {
    width: 100%;
    display: block;
    margin-bottom: 70px;
  }
  .featured-projects .project__caption {
    width: 100%;
    margin-top: 25px;
    margin-left: 0;
  }
}

/* 630 — weird-medium */
@media screen and (max-width: 630px) {
  .intro {
    padding: 120px 70px;
  }
  .skills .skillz {
    flex-wrap: wrap;
  }
  .skills .skillz__category {
    width: 47%;
    min-width: 0;
    margin-right: 5px;
    margin-bottom: 25px;
  }
  .footer {
    display: block;
  }
  .footer__copyright {
    width: auto;
    text-align: center;
    margin-bottom: 25px;
  }
  .footer__copyright .top,
  .footer__copyright .bottom {
    display: inline-block;
  }
  .footer__links {
    display: flex;
    justify-content: center;
  }
}

/* 550 — phablet */
@media screen and (max-width: 550px) {
  .intro {
    padding: 120px 50px;
  }
  .intro__hello,
  .intro__tagline {
    font-size: 1.75rem;
  }
  .intro__contact {
    font-size: 1rem;
  }
  .intro__contact .emoji.pointer {
    width: 25px;
    height: 25px;
  }
}

/* 480 — mobile */
@media screen and (max-width: 480px) {
  .section {
    padding: 50px 35px;
  }
  .section__content {
    padding-left: 30px;
  }
  .intro {
    padding: 70px 50px;
  }
  .experience .job .time-place {
    display: block;
  }
  .experience .job__time {
    font-size: 0.8rem;
  }
  .footer {
    padding: 50px 30px;
  }
  .footer__copyright .top,
  .footer__copyright .bottom {
    display: block;
  }
  #top-button {
    bottom: 15px;
    right: 3px;
  }
}

/* 360 — small-mobile */
@media screen and (max-width: 360px) {
  .intro__hello,
  .intro__tagline {
    font-size: 1.5rem;
  }
  .intro__hello .emoji,
  .intro__tagline .emoji {
    width: 25px;
    height: 25px;
  }
}

/* 330 — tiny-mobile */
@media screen and (max-width: 330px) {
  .intro__hello,
  .intro__tagline {
    font-size: 1.4rem;
  }
}