/* =============================================
   Holly Huey — stylesheet.css
   Single source of truth for all styles.
   Breakpoints: ≤1000px | ≤768px | ≤576px
   ============================================= */

/* BASE & TYPOGRAPHY ========================== */
html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
}

p, h1, .text {
  font-family: "Proxima Nova", "Roboto", sans-serif;
  font-weight: 400;
}

.text { line-height: 1.5em; }
.small-text { font-size: 1em; }

h1 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  line-height: 1.2;
  text-align: left;
}

h3 { color: #999; }
strong { font-weight: bold; }

span {
  display: inline-block;
  vertical-align: bottom;
  line-height: normal;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

img { vertical-align: middle; }

/* LAYOUT ===================================== */
.line-transition {
  border-bottom: 1px solid #e8e8e8;
  padding-bottom: 5em;
  padding-top: 2em;
}

#bio-research {
  padding-top: 0;
}

/* SCROLL TARGETS — offset for sticky nav height */
a#about,
a#research,
a#publications {
  scroll-margin-top: 72px;
}

a#about {
  display: block;
  height: 0;
  line-height: 0;
  font-size: 0;
  overflow: hidden;
}

/* STICKY NAV ================================= */
#sticky-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid #e8e8e8;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  height: 52px;
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  box-sizing: border-box;
}

#sticky-nav.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

#sticky-name {
  font-family: "Proxima Nova", "Roboto", sans-serif;
  font-size: 1rem;
  font-weight: 400;
  white-space: nowrap;
}

.sticky-dot { color: #09AD94; }

#sticky-nav nav ul {
  display: flex;
  flex-direction: row;
  margin: 0;
  padding: 0;
  width: auto;
  line-height: normal;
  font-size: 0.9rem;
}

#sticky-nav nav ul li {
  display: inline;
  margin-right: 4px;
}

/* FADE-IN SECTIONS =========================== */
.fade-section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}


.fade-section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* SCROLL HINT ================================ */
.hero-gradient {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 22vh;
  background: linear-gradient(to bottom, transparent, white);
  pointer-events: none;
  z-index: 9;
  transition: opacity 0.5s ease;
}

.scroll-hint {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  transition: opacity 0.5s ease;
}

.scroll-chevron {
  width: 18px;
  height: 18px;
  border-right: 2px solid #bbb;
  border-bottom: 2px solid #bbb;
  transform: rotate(45deg);
  animation: chevronPulse 1.6s ease-in-out infinite;
}

@keyframes chevronPulse {
  0%, 100% { transform: rotate(45deg) translate(0, 0); opacity: 0.3; }
  50%       { transform: rotate(45deg) translate(3px, 3px); opacity: 0.9; }
}

.hero-gradient.hidden,
.scroll-hint.hidden {
  opacity: 0;
  pointer-events: none;
}

/* LANDING / HERO ============================= */
#background {
  background-image: url(norm-site-icons/scribble5.png);
  background-position: center top;
  background-repeat: repeat-y;
  background-size: 100% auto;
}

#landing_background {
  position: relative;
  z-index: 0;
}


/* Animate the illustration in as a separate layer */
#landing_background::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url(norm-site-icons/trans_landing.png);
  background-size: 78%;
  background-position: 50% 0%;
  background-repeat: no-repeat;
  animation: heroReveal 1.8s ease-out both;
  z-index: -1;
  pointer-events: none;
}

@keyframes heroReveal {
  from { opacity: 0; }
  to   { opacity: 1; }
}

#landing-page-content {
  text-align: center;
  height: 120vh;
  display: flex;
  justify-content: center;
}

#hero-content {
  margin-bottom: 15%;
  align-self: center;
}

#hero-header {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.2;
}

.period-dot {
  font-size: 7em;
  color: #09AD94;
}

.hero-desc-sep { padding: 0 4px; }

#hero-description,
#hero-navigation-bar {
  font-size: clamp(1rem, 2.5vw, 1.7rem);
}

.landing-text {
  line-height: 1.25em;
  font-family: "Proxima Nova", "Roboto", sans-serif;
}

/* NAV ======================================== */
nav ul {
  padding: 0;
  list-style: none;
  font-size: 1.1em;
  text-align: center;
  margin: 20px auto;
  width: 97%;
  z-index: 1;
  position: relative;
  line-height: 50px;
}

footer ul {
  padding: 0;
  list-style: none;
  font-size: 1.1em;
  font-weight: bold;
  text-align: center;
}

nav ul li,
footer ul li {
  display: inline;
  margin-right: 20px;
}

a.nav {
  position: relative;
  text-decoration: none;
  color: black;
  padding: 10px;
}

a.nav::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 10px;
  right: 10px;
  height: 2px;
  background: #09AD94;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

a.nav:hover { color: #0E907C; }
a.nav:hover::after { transform: scaleX(1); }
a.nav:active { color: #333; }

a.external {
  text-decoration: none;
  color: #49A2A0;
  font-weight: normal;
}
a.external:hover { text-decoration: underline; }
a.external:active { color: #333; }

/* BIO / ABOUT ================================ */
headshot-span {
  float: right;
  margin-left: 2em;
  margin-top: 1.5em;
}

#headshot {
  cursor: pointer;
  height: 20em;
  display: block;
}

#wrapper {
  font-size: 1.25em;
  margin-left: 10%;
  margin-right: 10%;
  margin-bottom: 5%;
}

#bio-header {
  display: block;
  text-align: left;
  font-size: 1.5em;
}

#about {
  display: block;
  position: relative;
  height: 2em;
}

#bio-text { display: block; }

.bio-text-desc { font-size: 1em; }

#typing-text {
  color: #09AD94;
  font-weight: 600;
  font-size: 25px;
}

#typing-wrapper {
  height: 2em;
  overflow: hidden;
}

/* Hide the <br> before typing text on desktop — show only on mobile */
typy br { display: none; }

/* Mobile illustration in hero — hidden on desktop */
.hero-illustration-mobile { display: none; }

/* RESEARCH =================================== */


.sub-research {
  font-size: 125%;
  font-weight: 600;
  text-align: left;
  color: #09AD94;
}

.grid-container {
  display: grid;
  grid-template-columns: 30% 30% 30%;
  text-align: left;
  justify-content: space-around;
}

.text-footer {
  font-size: 14px;
  line-height: 20px;
  margin-top: 10px;
  color: #666;
}

.extra-research { margin-top: 20px; }
.research-text { margin-top: 20px; }

.research-img {
  display: block;
  width: 90%;
  max-width: 100%;
  margin: 1em auto 0.5em;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  padding: 12px;
  background-color: white;
  box-sizing: border-box;
}

.research-figures {
  width: 20em;
  max-width: 100%;
  border-radius: 2%;
  border: 0.1em solid #D3D5D7;
  padding: 0.25em;
  margin-top: -1em;
  margin-bottom: 1em;
  background-color: white;
}

.research-images {
  width: 50%;
  border: 0.125em solid #BABCBD;
}

/* Slideshow */
.mySlides,
.mySlides_2 { text-align: center; }

.slideshow-container {
  position: relative;
  margin: auto;
}

.prev:hover, .next:hover { background-color: rgba(0, 0, 0, 0.8); }

.dot_4, .dot_2, .dot_3 {
  cursor: pointer;
  height: 0.5em;
  width: 0.5em;
  margin: 0 2px;
  background-color: white;
  border: 1.5px solid #bbb;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.2s ease;
}

.active,
.dot_4:hover,
.dot_2:hover,
.dot_3:hover {
  background-color: #0E907C;
  opacity: 0.75;
}

.fade {
  animation-name: fade;
  animation-duration: 0.5s;
}

/* PUBLICATIONS =============================== */

.publication-text { font-size: 0.75em; }
.indiv-pub-text { font-size: 0.75em; }
.sub-pubs { font-size: 125%; color: #09AD94; }

ul.publications {
  margin: 10px 0;
  font-size: 1.4em;
  line-height: 1.6em;
  padding: 0;
  margin-left: 2.2em;
  list-style-position: inside;
  text-indent: -1.5em;
}

ul.publications li {
  list-style: none;
  margin: 22px 0;
}

.grid-container-publications {
  display: grid;
  grid-template-columns: 15% 5% 80%;
  grid-template-rows: auto;
  justify-content: space-around;
}

.container-publications {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
}

.figures {
  max-width: 100%;
  max-height: 100%;
}

/* Publication link pills */
.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
  text-indent: 0;
}

.pub-links a.external {
  display: inline-block;
  padding: 1px 8px;
  border: 1px solid #09AD94;
  border-radius: 10px;
  color: #09AD94;
  font-size: 0.7em;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.pub-links a.external:hover {
  background: #09AD94;
  color: white;
  text-decoration: none;
}

/* FOOTER / CONTACT =========================== */
.social-button {
  border: none;
  background-color: transparent;
}

.btn {
  display: inline-block;
  font-weight: 400;
  color: #212529;
  text-align: center;
  vertical-align: middle;
  user-select: none;
  background-color: transparent;
  border: 1px solid transparent;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: 0.25rem;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out,
              border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

button,
[type="button"],
[type="reset"],
[type="submit"] {
  appearance: button;
}

button, select { text-transform: none; }
button, input { overflow: visible; }

input, button, select, optgroup, textarea {
  margin: 0;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

#social-wrappper {
  display: block;
  text-align: center;
  padding-bottom: 0;
}

.social-icons { width: 30px; opacity: 0.4; transition: opacity 0.2s ease; }
.social-icons:hover { opacity: 0.8; }

.site-footer {
  border-top: 1px solid #e8e8e8;
  padding: 30px 0;
  margin-left: 10%;
  margin-right: 10%;
}

#design-credit {
  text-align: center;
  font-size: 12px;
  font-style: italic;
}

/* =============================================
   MEDIUM DESKTOP  ≤1000px
   ============================================= */
@media (max-width: 1000px) {
  .bio-text-desc {
    font-size: 1em;
    margin-top: 2em;
  }

  .grid-container { grid-template-columns: 100%; }

  .research-figures { width: 8em; }
}

/* =============================================
   TABLET  ≤768px
   ============================================= */
@media (max-width: 768px) {
  #hero-content { margin-bottom: 50%; }

  #landing_background { background-position: 50% 35%; }

  #headshot {
    height: 14em;
    padding-left: 3em;
  }

  .bio-text-desc {
    font-size: 0.8em;
    line-height: 1.5em;
    margin-top: 2em;
  }

  typy {
    font-size: 22px;
    line-height: 1em;
  }

  #typing-text { font-size: 20px; }

  #typing-wrapper { height: 6em; }

  .text-footer {
    font-size: 13px;
    line-height: 18px;
    margin-top: 15px;
  }

  .indiv-pub-text { font-size: 0.65em; }

  .sub-pubs { font-size: 115%; }

  .research-figures { width: 15em; }

  nav ul { font-size: 1em; }

  #sticky-nav { padding: 0 4%; }
}

/* =============================================
   MOBILE  ≤576px
   ============================================= */
@media (max-width: 576px) {
  /* 1. Illustration — wider on mobile */
  #landing_background::before {
    background-size: 95%;
  }

  /* 2. Period dot — smaller so it reads as a period, not a floating blob */
  .period-dot {
    font-size: 2.5rem;
    vertical-align: baseline;
  }

  #hero-header { line-height: 1em; }

  /* 3. Nav — single line */
  nav ul li { margin-right: 4px; }

  /* 4. Reduce hero height so gap below landing isn't so large */
  #landing-page-content { height: 100vh; }
  #hero-content { margin-bottom: 8%; }

  #background { background-size: 200%; }

  headshot-span {
    float: none;
    display: block;
    text-align: center;
  }

  /* 5. Headshot — tighter bottom margin */
  #headshot {
    float: none;
    display: block;
    height: 8em;
    margin: 1em auto 0;
    padding: 0;
  }

  /* 6. Typing text — bigger, centered, green text on its own line */
  #bio-header { text-align: center; }

  #typing-wrapper {
    height: 50px;
    overflow: hidden;
  }

  typy {
    font-size: 15px;
    display: block;
  }

  #typing-text {
    font-size: 17px;
    display: block;
    margin-top: 4px;
  }

  /* 7. Section spacing — less padding between sections */
  .line-transition {
    padding-top: 1em;
    padding-bottom: 2em;
  }

  /* 8. Consistent paragraph sizes across bio & research */
  .bio-text-desc {
    font-size: 0.9rem;
    line-height: 1.5em;
  }

  #bio-research p:not(.text-footer),
  #bio-publications p:not(.text-footer) {
    font-size: 0.9rem;
    line-height: 1.5;
  }

  .text-footer {
    font-size: 11px;
    line-height: 16px;
  }

  /* 2. Header hierarchy — h1 bigger than sub-research */
  h1 { font-size: 1.6rem; }
  .sub-research { font-size: 0.95rem; }
  .sub-pubs { font-size: 0.95rem; }

  /* Publications — consistent size, reduce double-spacing */
  ul.publications { font-size: 0.9rem; }
  ul.publications li { margin: 12px 0; line-height: 1.5; }
  .indiv-pub-text { font-size: 0.9rem; }
  .publication-text { font-size: 0.9rem; }

  /* 3. Hero description — tighter spacing on mobile */
  .hero-desc-item { margin-bottom: 6px; }

  /* Tap feedback — show underline on click, JS removes .tapped after delay */
  #hero-navigation-bar a.nav.tapped::after {
    transform: scaleX(1);
  }

  /* 4. Landing nav — inline-block so underline only spans word width */
  #hero-navigation-bar nav ul { line-height: normal; gap: 0; }
  #hero-navigation-bar nav ul li { width: 100%; text-align: center; }
  #hero-navigation-bar a.nav {
    display: inline-block;
    font-size: 1.35rem;
    padding: 12px 10px;
  }

  /* Mobile illustration — show between description and nav, hide ::before */
  .hero-illustration-mobile {
    display: block;
    width: 82%;
    margin: -30px auto 0;
  }
  #landing_background::before { background-image: none; }

  /* Show <br> before typing text on mobile */
  typy br { display: inline; }

  /* Tighten scroll offset for #about on mobile — anchor sits just above headshot */
  a#about { scroll-margin-top: 56px; }

  /* 1. Headshot — fully centered (zero out base margin-left on headshot-span) */
  headshot-span {
    margin-left: 0;
    margin-right: 0;
  }
  #headshot-content { text-align: center; }

  /* 2. Reduce gap between typing text and bio text */
  #bio-header { margin-bottom: 0; }
  .bio-text-desc { margin-top: 0.5em; }

  /* 3. Nav overlaps illustration so resume stays fully visible */
  #hero-navigation-bar { margin-top: -120px; }
  #landing_background::before { background-position: 50% 8%; }

  /* 4. Research figure captions — same as bio footer (11px, #666) */
  /* Removed override — global .text-footer { font-size: 11px } applies */

  /* 4. Sticky nav — show name, hamburger visible, links hidden until toggled */
  #sticky-name { display: block; }
  #hamburger { display: flex; }
  #sticky-nav-links { display: none; }

  /* 5. Landing nav — vertical stacked list */
  #hero-navigation-bar nav ul {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 2.2em;
    margin: 0;
  }
  #hero-navigation-bar nav ul li {
    display: block;
    margin-right: 0;
  }

  /* 6. Hero description — hide separators, stack lines */
  .hero-desc-sep { display: none; }
  .hero-desc-item { display: block; }
}

/* =============================================
   HAMBURGER + DROPDOWN (base styles, all sizes)
   ============================================= */
#hamburger {
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

#hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #333;
  border-radius: 2px;
}

/* Hide hamburger on desktop */
@media (min-width: 577px) {
  #hamburger { display: none; }
}

/* Dropdown panel when open */
#sticky-nav-links.open {
  display: block;
  position: absolute;
  top: 52px;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid #e8e8e8;
  padding: 8px 0;
  z-index: 99;
}

#sticky-nav-links.open ul {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0;
  padding: 0;
  width: 100%;
  line-height: normal;
  font-size: 1rem;
}

#sticky-nav-links.open ul li {
  display: block;
  margin: 0;
  width: 100%;
  text-align: center;
  padding: 10px 0;
}