/* =============================================
================== CSS Styles ==================
================================================ */
footer.footer .nav-footer,
#quarto-header>nav {
  padding-left: 1em;
  padding-right: 1em;
  padding-bottom: 0.5em;
}

#quarto-content {
  padding: 0;
  padding-top: 2em;
  grid-column: screen-start / screen-end;
  grid-row: contents-top / contents-bottom;
}

/* ==============================================================
=== BIODAS NAVBAR – DESKTOP CÓ HIỆU ỨNG / MOBILE TĨNH ===
================================================================= */

.navbar .container-fluid {
  display: flex;
  align-items: center;
  width: 100%;
  position: relative;
}

.navbar {
  background-size: 300% 300%;
  animation: navbarGradient 18s ease infinite;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
}

@keyframes navbarGradient {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

body {
  padding-top: 50px !important;
}

/* --- Logo --- */
.navbar-brand {
  display: flex;
  align-items: center;
  margin-right: 1rem;
  position: relative;
  z-index: 2;
}

.navbar-brand img {
  max-height: 36px !important;
  width: auto;
  transition: transform 0.3s ease, filter 0.3s ease;
}

.navbar-brand img:hover {
  transform: scale(1.05);
  filter: brightness(1.15);
}

/* --- Menu chính ở giữa (DESKTOP) --- */
@media (min-width: 992px) {
  .navbar .navbar-nav:first-of-type {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.1rem;
    flex-wrap: nowrap;
    z-index: 1;
  }
}

.navbar .navbar-nav:first-of-type>li>a {
  color: #ffffff !important;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 6px;
  position: relative;
  text-decoration: none;
  transition: all 0.3s ease-in-out;
  white-space: nowrap;
}

.navbar .navbar-nav:first-of-type>li>a:hover {
  background: #bd2740;
  color: #ffffff !important;
}



/* --- Dropdown menu --- */
.navbar .dropdown-menu {
  background: linear-gradient(145deg, #313d5d, #2a344d);
  border: none;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.25);
  border-radius: 8px;
  padding: 0.75rem 0;
  min-width: 12rem;
  transform: translateY(10px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease-in-out;
}

.navbar .dropdown-menu.show {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.navbar .dropdown-item {
  color: #e0e0e0 !important;
  padding: 0.6rem 1.25rem;
  font-weight: 400;
  transition: all 0.2s ease-in-out;
  white-space: nowrap;
}

.navbar .dropdown-item:hover {
  background: linear-gradient(90deg, rgba(217, 67, 87, 0.65), rgba(217, 67, 87, 0.3));
  color: #ffffff !important;
  padding-left: 1.5rem;
}

.navbar .nav-item.dropdown:hover>.dropdown-menu {
  display: block;
}



/* --- ICON + SEARCH --- */
.navbar .navbar-nav:last-of-type,
.navbar .quarto-navbar-tools {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-left: auto;
  gap: 1.5px;
  position: relative;
  z-index: 2;
}

.navbar .navbar-nav:last-of-type a {
  color: #ffffff !important;
  font-size: 1.15rem;
  transition: transform 0.25s ease, color 0.25s ease, opacity 0.25s ease;
}

.navbar .navbar-nav:last-of-type a:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}



/* =====================================================
   ✅ MOBILE: KHÔNG HIỆU ỨNG, GIAO DIỆN TĨNH
   ===================================================== */
@media (max-width: 991.98px) {

  /* Bố cục */
  .navbar .container-fluid {
    flex-direction: row;
    align-items: center;
  }

  .navbar-collapse {
    width: 100%;
  }

  .navbar .navbar-nav {
    width: 100%;
  }

  .navbar .navbar-nav:first-of-type,
  .navbar .navbar-nav:last-of-type {
    position: relative;
    left: 0;
    transform: none;
    display: block;
    margin: 0;
  }

  /* Tắt animation & shadow & hover */
  .navbar {
    background: #a01e34 !important;
    animation: none !important;
    box-shadow: none !important;
  }

  .navbar .navbar-nav a,
  .navbar .dropdown-item {
    transition: none !important;
    background: none !important;
    box-shadow: none !important;
    color: #ffffff !important;
    text-shadow: none !important;
  }

  .navbar .navbar-nav:first-of-type>li>a::after {
    display: none !important;
  }

  .navbar .dropdown-menu {
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    box-shadow: none !important;
    transition: none !important;
    background: #a01e34 !important;
  }

  .navbar .dropdown-item:hover,
  .navbar .navbar-nav a:hover {
    background: none !important;
    color: #ffffff !important;
    transform: none !important;
  }

  /* Icon: xếp ngang, không hiệu ứng */
  .navbar .navbar-nav:last-of-type {
    display: flex;
    flex-direction: row !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 10px;
    padding: 10px 0;
  }

  .navbar .navbar-nav:last-of-type a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    transform: none !important;
    opacity: 1 !important;
  }
}

/* Responsive tech icons row */
.tech-icons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.25rem 0;
  margin: 0 auto;
}

.tech-icons img {
  width: 28px;
  height: auto;
  max-width: 9%;
  padding-right: 10px;
  display: inline-block;
}

/* Make hero/about images fluid */
.quarto-about-jolla img,
.about img,
#hero-heading img,
img[alt="headshot.webp"],
img[alt="headshot"] {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Make embedded iframes (Credly badges, etc.) responsive inside column containers */
.column-margin iframe,
.column-margin embed,
.column-margin object {
  width: 100%;
  max-width: 340px;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* Small-screen tweaks: stack columns and reduce paddings to prevent horizontal overflow */
@media (max-width: 768px) {
  .column-margin {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
  }

  .tech-icons img {
    width: 24px;
    max-width: 12%;
    padding-right: 8px;
  }

  #quarto-content {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    padding-top: 1.25rem;
  }

  /* reduce spacing for the navbar offset on small screens if needed */
  body {
    padding-top: 56px !important;
  }
}

/* Extra-tight screens */
@media (max-width: 420px) {
  .tech-icons img {
    width: 20px;
    max-width: 14%;
    padding-right: 6px;
  }
}

/* Center the subtitle block and keep it responsive */
.line-block {
  display: block;
  text-align: center;
  max-width: 68ch;
  /* keep lines a readable length */
  margin: 0.5rem auto;
  word-break: break-word;
  hyphens: auto;
  font-size: 1rem;
}

/* Ensure inline elements (e.g. citation span) don't break alignment */
.line-block .citation {
  display: inline;
  font-style: normal;
  color: #0b7366;
}

/* Slightly reduce subtitle size on very small screens */
@media (max-width: 420px) {
  .line-block {
    max-width: 40ch;
    font-size: 0.92rem;
  }
}