/* ==========================================================================
   Emanuele Paolo Farina — shared stylesheet
   Used by the main site and by the REQUIEM sub-site, which adds its own
   colours and reading layout in requiem/css/requiem.css.

   Contents
     1. Theme variables
     2. Base elements
     3. Grid
     4. Icons
     5. Navigation (desktop)
     6. Navigation (mobile off-canvas menu)
     7. Hero header
     8. Sections and headings
     9. Home page cards
    10. Feature lists (icon + text)
    11. Profile cards (education, REQUIEM links)
    12. Contact details
    13. Buttons
    14. Image carousel
    15. Back-to-top button
    16. Scroll-reveal animations
   ========================================================================== */


/* 1. Theme variables
   Colours come from the colour-blind-safe Okabe-Ito palette. Its bluish
   green is the main colour; the others are used as secondary accents.
   Blue and vermillion are dark enough for headings and bold text; orange,
   sky blue, yellow and purple are too light for text on white, so they are
   only used for markers and decoration.
   ========================================================================== */

:root {
  /* Okabe-Ito palette */
  --oi-orange: #e69f00;
  --oi-sky: #56b4e9;
  --oi-green: #009e73;
  --oi-yellow: #f0e442;
  --oi-blue: #0072b2;
  --oi-vermillion: #d55e00;
  --oi-purple: #cc79a7;
  --oi-black: #000;

  --accent: var(--oi-green);  /* main colour: icons, rules, dots */
  --accent-text: #007656;     /* same green, 25% darker: links on light backgrounds */
  --hero-overlay: rgba(0, 48, 35, 0.86); /* Okabe-Ito black mixed with 30% of the green */

  /* The three home-page cards use progressively darker shades of the green,
     dark enough for white body text. */
  --card-1: #008662;
  --card-1-icon: #007858;
  --card-2: #007e5c;
  --card-2-icon: #007153;
  --card-3: #007656;
  --card-3-icon: #006a4d;

  --text: #777;
  --heading: #000;
  --muted: #bfbfbf;
  --section-grey: #efefef;
  --border: #d9d9d9;

  --font: "Droid Sans", Arial, sans-serif;
  --container: 1140px;
  --gutter: 15px;
  --mobile: 768px; /* reference only: media queries below use this value */
}


/* 2. Base elements
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: #fff;
}

a {
  color: var(--accent-text);
  text-decoration: none;
  transition: color 0.5s;
}

h1,
h2,
h3 {
  margin: 0 0 20px;
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.1;
  color: var(--heading);
}
h1 { font-size: 36px; }
h2 { font-size: 30px; }
h3 { font-size: 24px; }

p {
  margin: 0 0 20px;
}

ul {
  margin: 0 0 10px;
}

img {
  vertical-align: middle;
}

sub,
sup {
  position: relative;
  font-size: 75%;
  line-height: 0;
  vertical-align: baseline;
}
sup { top: -0.5em; }
sub { bottom: -0.25em; }

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

/* Utilities */
.text-center  { text-align: center; }
.text-justify { text-align: justify; }

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

.container {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Wrapper that slides aside when the mobile menu opens. */
.page {
  position: relative;
  width: 100%;
  overflow-x: hidden;
}


/* 3. Grid
   A minimal subset of the Bootstrap 3 grid: columns are full width on
   phones and take their fraction of the row from the named breakpoint up.
   sm >= 768px, md >= 992px, lg >= 1200px.
   ========================================================================== */

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(-1 * var(--gutter));
}

.row > * {
  position: relative;
  width: 100%;
  padding: 0 var(--gutter);
}

.row--spaced {
  padding-bottom: 4em;
}

@media (min-width: 768px) {
  .col-sm-4 { width: 33.3333%; }
  .col-sm-6 { width: 50%; }
}

@media (min-width: 992px) {
  .col-md-3 { width: 25%; }
  .col-md-4 { width: 33.3333%; }
  .col-md-5 { width: 41.6667%; }
  .col-md-6 { width: 50%; }
  .push-md-1 { left: 8.3333%; }

  /* Centred reading column (two thirds of the container). */
  .narrow {
    max-width: 66.6667%;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (min-width: 1200px) {
  .col-lg-3 { width: 25%; }
  .col-lg-4 { width: 33.3333%; }
}


/* 4. Icons
   Two icon fonts, subset to the handful of glyphs the site uses.
   To add an icon, re-subset the original font with the new code point.
   ========================================================================== */

@font-face {
  font-family: "icomoon";
  src: url("../fonts/icomoon.woff2") format("woff2");
  font-display: block;
}

@font-face {
  font-family: "themify";
  src: url("../fonts/themify.woff2") format("woff2");
  font-display: block;
}

[class^="icon-"],
[class*=" icon-"],
[class^="ti-"],
[class*=" ti-"] {
  font-style: normal;
  font-weight: normal;
  line-height: 1;
  speak: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

[class^="icon-"],
[class*=" icon-"] { font-family: "icomoon"; }

[class^="ti-"],
[class*=" ti-"] { font-family: "themify"; }

.icon-mail2::before    { content: "\e9da"; }
.icon-arrow-up::before { content: "\e096"; }
.icon-check::before    { content: "\e116"; }

.ti-user::before         { content: "\e602"; }
.ti-search::before       { content: "\e610"; }
.ti-layers::before       { content: "\e62f"; }
.ti-arrow-right::before  { content: "\e628"; }
.ti-arrow-left::before   { content: "\e629"; }
.ti-announcement::before { content: "\e64f"; }
.ti-book::before         { content: "\e6b7"; }
.ti-linkedin::before     { content: "\e735"; }


/* 5. Navigation (desktop)
   ========================================================================== */

.site-nav {
  position: absolute;
  top: 0;
  z-index: 1001;
  width: 100%;
  padding: 20px 0;
}

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

.site-nav li {
  display: inline;
}

/* Row 1: e-mail / LinkedIn / ORCID icons */
.site-nav .nav-social {
  margin-bottom: 20px;
  text-align: right;
}

.nav-social a {
  padding: 5px 10px;
  font-size: 14px;
  color: var(--accent);
}

.nav-social a:hover {
  color: #fff;
}

/* Row 2: optional site name on the left, page links on the right */
.nav-bar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.nav-logo {
  font-size: 20px;
  font-weight: bold;
  line-height: 1.2;
  text-transform: uppercase;
}

.nav-logo a {
  color: #fff;
}

.site-nav .nav-menu {
  margin-left: auto;
  text-align: right;
}

.site-nav .nav-menu a {
  padding: 30px 10px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.5);
}

.site-nav .nav-menu a:hover,
.site-nav .nav-menu a:focus,
.site-nav .nav-menu .active > a {
  color: #fff;
}

/* Drop-down sub-menus, opened on hover or keyboard focus. */
.has-dropdown {
  position: relative;
}

.site-nav .dropdown {
  position: absolute;
  top: 40px;
  left: 0;
  z-index: 1002;
  width: 130px;
  padding: 20px;
  text-align: left;
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 4px 5px rgba(0, 0, 0, 0.15);
  visibility: hidden;
  opacity: 0;
}

/* Small arrow pointing at the parent link */
.site-nav .dropdown::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 32px;
  border: 8px solid transparent;
  border-bottom-color: #fff;
  pointer-events: none;
}

.has-dropdown:hover > .dropdown,
.has-dropdown:focus-within > .dropdown {
  visibility: visible;
  animation: dropdown-in 0.5s both;
}

.site-nav .dropdown li {
  display: block;
  margin-bottom: 7px;
}

.site-nav .dropdown li:last-child {
  margin-bottom: 0;
}

.site-nav .dropdown a {
  display: block;
  padding: 2px 0;
  font-size: 15px;
  line-height: 1.2;
  color: #999;
}

.site-nav .dropdown a:hover {
  color: #000;
}

@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: none; }
}

@media (max-width: 768px) {
  .site-nav .nav-menu {
    display: none;
  }
  .site-nav .nav-social {
    text-align: left;
  }
}


/* 6. Navigation (mobile off-canvas menu)
   js/site.js copies .nav-menu into #offcanvas and adds the burger button.
   ========================================================================== */

.nav-toggle,
#offcanvas {
  display: none;
}

@media (max-width: 768px) {
  .nav-toggle,
  #offcanvas {
    display: block;
  }
}

.nav-toggle {
  position: absolute;
  top: 10px;
  right: 0;
  z-index: 2001;
  width: 44px;
  height: 44px;
  padding: 6px 0 0;
  background: none;
  border: 0;
  cursor: pointer;
}

/* Three-bar "burger" drawn with one <i> and its two pseudo-elements. */
.nav-toggle i,
.nav-toggle i::before,
.nav-toggle i::after {
  position: absolute;
  left: 0;
  width: 25px;
  height: 2px;
  background: #fff;
  transition: all 0.2s ease-out;
}

.nav-toggle i {
  position: relative;
  display: inline-block;
}

.nav-toggle i::before,
.nav-toggle i::after {
  content: "";
}

.nav-toggle i::before { top: -7px; }
.nav-toggle i::after  { bottom: -7px; }
.nav-toggle:hover i::before { top: -10px; }
.nav-toggle:hover i::after  { bottom: -10px; }

/* Open state: the burger becomes a cross. */
.menu-open .nav-toggle i { background: transparent; }
.menu-open .nav-toggle i::before { top: 0; transform: rotate(45deg); }
.menu-open .nav-toggle i::after  { bottom: 0; transform: rotate(-45deg); }

#offcanvas {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 1901;
  width: 270px;
  padding: 45px 40px 40px;
  overflow-y: auto;
  background: #000;
  transform: translateX(270px);
  transition: transform 0.5s;
}

.menu-open #offcanvas {
  transform: none;
}

/* Dim the page behind the open menu. */
.menu-open .page {
  position: absolute;
  overflow: hidden;
}

.menu-open .page::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 101;
  background: rgba(0, 0, 0, 0.7);
}

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


#offcanvas a {
  display: block;
  color: rgba(255, 255, 255, 0.5);
}

#offcanvas a:hover {
  color: rgba(255, 255, 255, 0.8);
}

#offcanvas .has-dropdown {
  position: relative;
}

#offcanvas .has-dropdown > a {
  padding-right: 30px;
}

/* In the off-canvas menu sub-menus are expanded with a toggle button. */
#offcanvas .dropdown {
  position: static;
  display: none;
  width: auto;
  padding: 0 0 0 20px;
  background: none;
  box-shadow: none;
  visibility: visible;
  opacity: 1;
  animation: none;
}

#offcanvas .dropdown::before {
  display: none;
}

#offcanvas .has-dropdown.open > .dropdown {
  display: block;
}

.submenu-toggle {
  position: absolute;
  top: 2px;
  right: 0;
  padding: 0;
  font-family: "icomoon";
  font-size: 20px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.2);
  background: none;
  border: 0;
  cursor: pointer;
  transition: transform 0.5s;
}

.submenu-toggle::before {
  content: "\e921";
}

.open > .submenu-toggle {
  transform: rotate(-180deg);
}


/* 7. Hero header
   Full-width banner with a background image and a coloured overlay.
   ========================================================================== */

.hero {
  position: relative;
  height: 900px;
  background-image: url("../images/img_bg_1.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--hero-overlay);
}

.hero > .container {
  z-index: 10;
  height: 100%;
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
}

.hero h1,
.hero h2 {
  margin: 0;
  padding: 0;
  color: #fff;
}

.hero h1 {
  font-size: 59px;
  line-height: 1.5;
}

.hero h2 {
  margin-bottom: 30px;
  font-size: 22px;
  line-height: 1.5;
}

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

.hero a:hover {
  color: #fff;
}

/* Shorter, centred variant used on every page except the home page. */
.hero--small {
  height: 500px;
  text-align: center;
}

.hero--small .hero-content {
  margin: 0 auto;
}

/* REQUIEM pages show their logo inside the banner. */
.hero-logo {
  display: block;
  width: 100%;
  max-height: 260px;
  object-fit: contain;
}

@media (max-width: 768px) {
  .hero {
    height: 600px;
  }
  .hero h1 {
    margin-bottom: 10px;
    font-size: 34px;
    line-height: 1.2;
  }
  .hero--small {
    height: auto;
    padding: 9em 0 3em;
  }
}

@media (max-width: 480px) {
  .hero {
    text-align: center;
  }
}


/* 8. Sections and headings
   ========================================================================== */

.section {
  position: relative;
  padding: 7em 0;
}

.section--grey {
  background: var(--section-grey);
}

.section--bordered {
  border-bottom: 1px solid var(--border);
}

.section-heading {
  margin-bottom: 5em;
}

.section-heading h2 {
  position: relative;
  margin-bottom: 20px;
  padding-bottom: 10px;
  font-size: 36px;
  font-weight: bold;
  line-height: 1.5;
  text-transform: uppercase;
}

/* Short accent-coloured underline below every section title. */
.section-heading h2::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 50px;
  height: 2px;
  margin-left: -25px;
  background: var(--section-color, var(--accent));
}

.section-heading p {
  font-size: 20px;
  line-height: 1.5;
  color: #1a1a1a;
}

/* Research page: each topic has its own colour for title, underline,
   list markers and carousel dots. */
.theme-green      { --section-color: var(--accent-text); }
.theme-blue       { --section-color: var(--oi-blue); }
.theme-vermillion { --section-color: var(--oi-vermillion); }

.section-heading--accent h2 {
  color: var(--section-color, var(--accent-text));
}

/* Bulleted list with coloured round markers */
.dot-list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

/* Inside a section heading block, match the paragraph text. */
.section-heading .dot-list {
  font-size: 20px;
  line-height: 1.5;
  color: #1a1a1a;
}

.dot-list li {
  position: relative;
  margin-bottom: 8px;
  padding-left: 28px;
}

.dot-list li::before {
  content: "";
  position: absolute;
  top: 0.55em;
  left: 4px;
  width: 10px;
  height: 10px;
  background: var(--oi-green);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(0, 158, 115, 0.18);
}

.dot-list li:nth-child(3n + 2)::before {
  background: var(--oi-sky);
  box-shadow: 0 0 0 4px rgba(86, 180, 233, 0.22);
}

.dot-list li:nth-child(3n + 3)::before {
  background: var(--oi-orange);
  box-shadow: 0 0 0 4px rgba(230, 159, 0, 0.2);
}

/* Secondary title inside a section (no capitals, no underline). */
.section-heading .subheading {
  margin-top: 20px;
  padding: 0;
  font-size: 36px;
  font-weight: 400;
  text-transform: none;
}

.section-heading .subheading::before {
  display: none;
}

@media (max-width: 768px) {
  .section {
    padding: 3em 0;
  }
}


/* 9. Home page cards
   Three coloured cards that overlap the bottom of the hero banner.
   The middle one is raised and casts a shadow.
   ========================================================================== */

.home-cards {
  position: relative;
  top: -7em;
  display: flex;
  flex-wrap: wrap;
}

.home-card {
  position: relative;
  z-index: 7;
  width: 33.33%;
  padding: 30px;
  text-align: center;
  background: var(--card-1);
}

.home-card h3 {
  margin-bottom: 15px;
  font-size: 18px;
  color: #fff;
  text-transform: uppercase;
}

.home-card p {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.92);
}

/* Links inside the green cards: white and underlined. */
.home-card p a:not(.btn) {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.home-card .card-icon {
  position: relative;
  top: -3em;
  display: block;
  width: 90px;
  height: 90px;
  margin: 0 auto 10px;
  background: var(--card-1-icon);
  border-radius: 50%;
}

.home-card .card-icon i {
  display: block;
  font-size: 40px;
  line-height: 90px;
  color: #fff;
}

.home-card:nth-child(2) {
  z-index: 10;
  background: var(--card-2);
  box-shadow: 0 0 30px 10px rgba(0, 0, 0, 0.25);
}

.home-card:nth-child(2) .card-icon {
  background: var(--card-2-icon);
}

.home-card:nth-child(2) .card-body {
  position: relative;
  top: -3em;
}

/* Extend the middle card 50px above and 30px below its neighbours. */
.home-card:nth-child(2)::before,
.home-card:nth-child(2)::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  background: var(--card-2);
}
.home-card:nth-child(2)::before { top: -50px; height: 50px; }
.home-card:nth-child(2)::after  { bottom: -30px; height: 30px; }

.home-card:nth-child(3) {
  background: var(--card-3);
}

.home-card:nth-child(3) .card-icon {
  background: var(--card-3-icon);
}

@media (max-width: 768px) {
  .home-cards {
    top: -2em;
  }
  .home-card {
    width: 100%;
    margin-bottom: 30px;
  }
  .home-card:nth-child(2) {
    box-shadow: none;
  }
  .home-card:nth-child(2) .card-body {
    top: 0;
  }
  .home-card:nth-child(2)::before,
  .home-card:nth-child(2)::after {
    display: none;
  }
}


/* 10. Feature lists (icon + text)
   ========================================================================== */

.feature {
  display: flex;
  justify-content: space-between;
  margin-bottom: 30px;
}

.feature-icon {
  flex: 0 0 15%;
  text-align: center;
  font-size: 40px;
  color: var(--accent);
}

.feature-icon--blue {
  color: var(--oi-blue);
}

.feature-text {
  flex: 0 0 80%;
}

/* Items without an icon (e.g. REQUIEM images page) use the full width. */
.feature-text:only-child {
  flex-basis: 100%;
}

/* Captioned images and videos (REQUIEM images page) */
figure.feature {
  margin: 0 0 30px;
}


/* CV page: dates of each position */
.career b {
  color: var(--oi-blue);
}


/* 11. Profile cards (education, REQUIEM links)
   ========================================================================== */

.profile {
  margin-bottom: 7em;
  text-align: center;
}

.profile img {
  width: 100px;
  margin-bottom: 20px;
  border-radius: 50%;
}

.profile h3 {
  margin-bottom: 5px;
  font-size: 24px;
}

.profile .role {
  display: block;
  margin-bottom: 30px;
  font-weight: normal;
  color: var(--muted);
}

.profile p {
  margin-bottom: 30px;
}

@media (max-width: 768px) {
  .profile {
    margin-bottom: 3em;
  }
}


/* 12. Contact details
   ========================================================================== */

.contact-info {
  margin: 0 0 30px;
  padding: 7em 0 0;
  list-style: none;
}

.contact-info li {
  position: relative;
  margin: 0 0 30px;
  padding-left: 50px;
}

.contact-info li::before {
  position: absolute;
  top: 0.05em;
  left: 0;
  font-family: "icomoon";
  font-size: 23px;
  line-height: 1;
  color: #ccc;
}

.contact-info .address::before { content: "\e9d1"; font-size: 30px; color: var(--oi-vermillion); }
.contact-info .email::before   { content: "\e9da"; color: var(--oi-blue); }
.contact-info .url::before     { content: "\e9af"; color: var(--oi-green); }

@media (max-width: 992px) {
  .contact-info {
    padding-top: 2em;
  }
}


/* 13. Buttons
   ========================================================================== */

.btn {
  display: inline-block;
  padding: 8px 30px;
  font-size: 16px;
  line-height: 1.42857;
  text-align: center;
  white-space: nowrap;
  color: #fff;
  background: none;
  border: 2px solid #fff;
  border-radius: 4px;
  transition: 0.3s;
}

.btn:hover,
.btn:focus {
  color: #000;
  background: #fff;
}


/* 14. Image carousel
   Horizontal scroll-snap strip: 1 / 2 / 3 images per view depending on the
   screen width. js/site.js adds the arrows and the page dots.
   ========================================================================== */

.carousel {
  position: relative;
}

.carousel-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
}

.carousel-track::-webkit-scrollbar {
  display: none;
}

.carousel-item {
  flex: 0 0 100%;
  scroll-snap-align: start;
}

.carousel-item img {
  display: block;
  width: 100%;
}

@media (min-width: 600px) {
  .carousel-item { flex-basis: calc((100% - 20px) / 2); }
}

@media (min-width: 1000px) {
  .carousel-item { flex-basis: calc((100% - 40px) / 3); }
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  z-index: 5;
  margin-top: -39px;
  padding: 12px;
  font-size: 24px;
  color: #000;
  background: rgba(255, 255, 255, 0.5);
  border: 0;
  cursor: pointer;
  transition: 0.2s;
}

.carousel-arrow:hover {
  background: #fff;
}

.carousel-arrow.prev { left: 20px; }
.carousel-arrow.next { right: 20px; }
.carousel-arrow.prev:hover { margin-left: -10px; }
.carousel-arrow.next:hover { margin-right: -10px; }

.carousel-dots {
  margin-top: 10px;
  text-align: center;
}

.carousel-dots button {
  width: 10px;
  height: 10px;
  margin: 5px 4px;
  padding: 0;
  background: none;
  border: 2px solid var(--section-color, var(--accent));
  border-radius: 50%;
  cursor: pointer;
}

.carousel-dots button.active {
  background: var(--section-color, var(--accent));
}

@media (max-width: 768px) {
  .carousel-arrow {
    display: none;
  }
}


/* 15. Back-to-top button
   ========================================================================== */

.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  color: #fff;
  background: var(--accent);
  border-radius: 4px;
  opacity: 0;
  visibility: hidden;
  transition: 0.5s;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  color: #fff;
}


/* 16. Scroll-reveal animations
   Elements with .reveal fade in when they scroll into view (js/site.js).
   data-reveal="fade" | "left" | "right"; the default slides up.
   ========================================================================== */

@media (scripting: enabled) and (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
  }
}

.reveal.revealed {
  animation: reveal-up 0.5s both;
}

.reveal.revealed[data-reveal="fade"]  { animation-name: reveal-fade; }
.reveal.revealed[data-reveal="left"]  { animation-name: reveal-left; }
.reveal.revealed[data-reveal="right"] { animation-name: reveal-right; }

@keyframes reveal-fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes reveal-up {
  from { opacity: 0; transform: translate3d(0, 100%, 0); }
  to   { opacity: 1; transform: none; }
}

@keyframes reveal-left {
  from { opacity: 0; transform: translate3d(-100%, 0, 0); }
  to   { opacity: 1; transform: none; }
}

@keyframes reveal-right {
  from { opacity: 0; transform: translate3d(100%, 0, 0); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal.revealed {
    animation: none;
  }
  html {
    scroll-behavior: auto;
  }
}