/* =========================================================
   Light Beige Theme – Consistent Academic Palette
   ========================================================= */
   :root{
    /* Base neutrals */
    --bg-1: rgba(222,216,204,1);     
    --bg-2: rgba(240,236,228,1);     
    --bg: #ffffff;
    --surface: rgba(255,255,255,0.95);
    --fg: #2b2b2b;
    --muted:#6a6259;                 
    --line: rgba(0,0,0,0.08);
  
    /* Brand (warm, academic) */
    --brand:  #b08968;   /* primary accent */
    --brand2: #d4a373;   /* lighter accent */
    --brand3: #e6b17e;   /* lightest accent */
  
    /* Brand tints for UI states (use these everywhere) */
    --brand-tint-weak:    rgba(176,137,104,.08);  /* default chip/pill */
    --brand-tint-medium:  rgba(176,137,104,.16);  /* hover */
    --brand-tint-strong:  rgba(176,137,104,.22);  /* active/current */
    --brand-border-weak:  rgba(176,137,104,.25);
    --brand-border-strong:rgba(176,137,104,.35);
  
    /* Shadows */
    --shadow-sm: 0 2px 6px rgba(0,0,0,.06);
    --shadow-md: 0 4px 14px rgba(0,0,0,.10);
    --shadow-lg: 0 10px 28px rgba(0,0,0,.12);
  
    /* Layout tokens */
    --radius: 14px;
    --container: 90%;
    --blur: 14px;
    --fast: 160ms cubic-bezier(.2,.8,.2,1);
  
    /* Polaroid */
    --pol-paper: linear-gradient(180deg, rgba(255,255,255,.95), rgba(255,255,255,.88));
    --pol-tint:  var(--brand-tint-weak);
    --pol-line:  rgba(0,0,0,.12);
  }
  
  /* =========================================================
     Base / Background
     ========================================================= */
  *,
  *::before,
  *::after { box-sizing: border-box; }
  html, body { height: 100%; }
  
  body{
    margin: 0;
    color: var(--fg);
    font-family: 'IBM Plex Sans', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    line-height: 1.5;
    font-size: 0.9rem;
    background: var(--bg-2);
  }
  
  /* =========================================================
     Typography
     ========================================================= */
  h1, h2, h3{
    margin: .2rem 0 .4rem;
    line-height: 1.2;
    font-family: 'Lora', Georgia, serif;
    font-weight: 600;
    letter-spacing: 0.2px;
  }
  h1{ font-size: clamp(1.8rem, 1.2rem + 1.8vw, 2.6rem); }
  h2{ font-size: clamp(1.2rem, 0.9rem + 0.8vw, 1.6rem); }
  h3{ font-size: clamp(1rem, 0.8rem + 0.6vw, 1.3rem); }
  
  .hero-tagline {
    margin: .2rem 0 .6rem;
    color: var(--muted);
    font-style: normal;
    font-weight: 400;
    font-size: 0.95rem;
    font-family: 'IBM Plex Sans', sans-serif;
    line-height: 1.4;
  }
  
  /* =========================================================
     Layout Containers
     ========================================================= */
  .container{
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: 12px;
    position: relative;
  }
  .hero, .section{ margin-top: clamp(12px, 2vw, 24px); }
  .hero .inner, .section .inner{
    background: var(--surface);
    border: 1px solid rgba(176,137,104,.2);
    border-radius: var(--radius);
    backdrop-filter: blur(var(--blur));
    box-shadow: var(--shadow-lg);
    padding: 14px;
    overflow: hidden;
    position: relative;
  }
  
  /* =========================================================
     Header / Navigation
     ========================================================= */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    background: rgba(240,236,228,.95);
    border-bottom: 1px solid rgba(176,137,104,.3);
    box-shadow: var(--shadow-md);
    min-height: 6vh;
    display: flex;
    align-items: center;
  }
  
  .nav {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.8rem 12px;
    max-width: var(--container);
    margin-inline: auto;
    width: 100%;
  }
  
  /* Wordmark / Logo */
  .nav-logo {
    font-weight: 600;
    font-size: 0.85rem;
    font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
    letter-spacing: 0.3px;
    color: var(--fg);
    text-decoration: none;
  
    display: flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 32px;
  
    border-radius: 8px;
    background: linear-gradient(135deg, var(--surface), #f0f0f0);
    box-shadow: var(--shadow-sm), inset 0 1px 2px rgba(255,255,255,.6);
  
    transition: box-shadow .3s ease, transform .25s ease, background .25s ease;
    cursor: pointer;
  }
  .nav-logo:hover {
    box-shadow: var(--shadow-md), inset 0 1px 3px rgba(255,255,255,.7);
    transform: translateY(-2px);
  }
  
  /* Social Icons in Logo */
  .logo-icons {
    display: flex;
    gap: 8px;
    align-items: center;
  }
  
  .social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    color: var(--brand);
    transition: all 0.2s ease;
    border-radius: 4px;
  }
  
  .social-icon:hover {
    color: var(--brand2);
    background: var(--brand-tint-weak);
    transform: scale(1.1);
  }
  
  /* Mobile toggle */
  .nav-toggle {
    margin-left: auto;
    display: none;
    background: linear-gradient(135deg, var(--surface), rgba(240,236,228,.98));
    color: var(--fg);
    border: 2px solid var(--brand-border-weak);
    padding: .65rem 1rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: .95rem;
    box-shadow: var(--shadow-sm);
    transition: all .25s ease;
    position: relative;
    overflow: hidden;
  }
  .nav-toggle::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--brand-tint-weak), var(--brand-tint-medium));
    opacity: 0;
    transition: opacity .25s ease;
  }
  .nav-toggle:hover {
    background: linear-gradient(135deg, rgba(255,255,255,.98), var(--surface));
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--brand-border-strong);
  }
  .nav-toggle:hover::before {
    opacity: 1;
  }
  .nav-toggle:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
  }
  
  /* Menu */
  .nav-menu {
    margin-left: auto;
    display: flex;
    gap: 10px;
    list-style: none;
    padding: 0;
  }
  
  /* Academic link style with consistent brand tint usage */
  .nav-menu a {
    text-decoration: none;
    padding: .4rem .7rem;
    border-radius: 999px;
    background: var(--brand-tint-weak);
    color: var(--fg);
    font-weight: 400;
    font-size: 0.85rem;
    border: 1px solid transparent;
    transition: background .2s ease, border-color .2s ease, transform .18s ease, box-shadow .2s ease;
  }
  .nav-menu a:hover {
    background: var(--brand-tint-medium);
    border-color: var(--brand-border-weak);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
  }
  .nav-menu a[aria-current="page"] {
    background: linear-gradient(180deg, var(--brand-tint-strong), rgba(212,163,115,.18));
    border-color: var(--brand-border-strong);
    font-weight: 600;
  }
  
  @media (max-width: 860px) {
    .nav-toggle { display: inline-block; }
    .nav-menu {
      position: absolute;
      inset-inline: 0;
      top: 100%;
      display: none;
      flex-direction: column;
      gap: 8px;
      background: linear-gradient(135deg, 
        rgba(255,255,255,.98), 
        rgba(240,236,228,.96),
        rgba(222,216,204,.94));
      padding: 20px 20px 24px;
      margin: 0 12px;
      border: 2px solid var(--brand-border-weak);
      border-top: none;
      border-radius: 0 0 16px 16px;
      box-shadow: var(--shadow-lg), 0 12px 30px rgba(176,137,104,.15);
      backdrop-filter: blur(12px);
    }
    .nav-menu.open {
      display: flex;
      animation: slideDown .35s cubic-bezier(.2,.8,.2,1);
    }
    .nav-menu li {
      opacity: 0;
      animation: fadeInUp .4s cubic-bezier(.2,.8,.2,1) forwards;
    }
    .nav-menu li:nth-child(1) { animation-delay: .05s; }
    .nav-menu li:nth-child(2) { animation-delay: .1s; }
    .nav-menu li:nth-child(3) { animation-delay: .15s; }
    .nav-menu li:nth-child(4) { animation-delay: .2s; }
    .nav-menu li:nth-child(5) { animation-delay: .25s; }
    .nav-menu a {
      display: block;
      padding: .75rem 1.2rem;
      border-radius: 12px;
      font-size: 1.05rem;
      text-align: center;
      background: var(--brand-tint-weak);
      border: 2px solid transparent;
      position: relative;
      overflow: hidden;
    }
    .nav-menu a::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, var(--brand-tint-medium), var(--brand-tint-strong));
      opacity: 0;
      transition: opacity .2s ease;
    }
    .nav-menu a:hover::before {
      opacity: 1;
    }
    .nav-menu a span {
      position: relative;
      z-index: 1;
    }
    .nav-menu a[aria-current="page"] {
      background: linear-gradient(135deg, var(--brand-tint-strong), rgba(212,163,115,.22));
      border-color: var(--brand-border-strong);
      box-shadow: 0 2px 8px rgba(176,137,104,.2);
    }
  }
  
  @keyframes slideDown {
    from { 
      opacity: 0; 
      transform: translateY(-20px) scaleY(0.95);
      transform-origin: top;
    }
    to { 
      opacity: 1; 
      transform: translateY(0) scaleY(1);
    }
  }
  
  @keyframes fadeInUp {
    from { 
      opacity: 0; 
      transform: translateY(10px);
    }
    to { 
      opacity: 1; 
      transform: translateY(0);
    }
  }
  
  /* =========================================================
     Hero with Polaroid
     ========================================================= */
  .hero-flex{ display: flex; align-items: flex-start; gap: 30px; }
  
  /* Polaroid */
  .polaroid{
    position: relative;
    background:
      radial-gradient(120% 100% at 20% 0%, var(--pol-tint), transparent 60%),
      var(--pol-paper);
    color: #283146;
    padding: 8px 8px 20px;
    border-radius: 6px;
    border: 1px solid var(--pol-line);
    box-shadow: 0 10px 20px rgba(0,0,0,.12), 0 3px 8px rgba(0,0,0,.06) inset;
    max-width: 200px;
    min-height: 280px;
    flex-shrink: 0;
    display: grid;
    grid-template-rows: auto 1fr;
    align-items: start;
    margin-top: 0;
    margin-bottom: 0;
    transform: rotate(-0.4deg);
    transform-origin: left top;
    transition: transform 0.3s ease, min-height 0.3s ease, box-shadow 0.3s ease;
  }
  .polaroid img{
    width: 100%; height: auto; display: block; border-radius: 4px;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,.06);
  }
  .polaroid-caption{
    margin-top: auto; padding-top: 8px;
    font-size: 1rem; font-weight: 600; letter-spacing: .02em;
    color: #3f3f3f; text-align: center;
  }
  .polaroid::after{
    content:""; position:absolute; inset:0; border-radius:8px;
    background: linear-gradient(180deg, rgba(255,255,255,.28), transparent 55%);
    pointer-events:none;
  }
  .polaroid:hover{
    transform: scale(1.03) rotate(0deg);
    /* min-height: 375px; */
    box-shadow: 0 20px 48px rgba(0,0,0,.25), 0 6px 14px rgba(0,0,0,.1) inset;
  }
  
  /* =========================================================
     Typewriter Tagline
     ========================================================= */
.hero-tagline {
    margin: .25rem 0 .8rem;
    color: var(--muted);
    font-style: italic;
    font-weight: 500;
    font-size: 1.2rem;
    font-family: 'Inter', sans-serif;
  }

.typewriter{
    display: inline;
    font-family: inherit;
    font-variant-ligatures: none;
  font-feature-settings: "liga" 0;
    white-space: normal;
    word-break: break-word;
}

/* Blinking caret inserted by JS as <span class="tw-caret">|</span> */
.tw-caret{
  display: inline-block;
  width: 1px;
  background: currentColor;
  margin-left: 2px;
  height: 1em;
  vertical-align: -0.1em;
  animation: tw-caret-blink 1s step-end infinite;
}
@keyframes tw-caret-blink{
  0%,49% { opacity: 1; }
  50%,100% { opacity: 0; }
}
@media (prefers-reduced-motion: reduce){
  .tw-caret{ display:none !important; }
}
  
  /* =========================================================
     Buttons
     ========================================================= */
  .cta-row{ display: flex; flex-wrap: wrap; gap: 10px; }
  .btn{
    display: inline-block; padding: .55rem .9rem; border-radius: 12px;
    color: #fff; background: var(--brand);
    box-shadow: var(--shadow-md);
    transition: transform var(--fast), filter var(--fast);
  }
  .btn:hover{ transform: translateY(-1px); filter: brightness(1.05); }
  .btn-primary{ background: linear-gradient(135deg, var(--brand), var(--brand2)); }
  
  /* =========================================================
     Sections
     ========================================================= */
  .section h2{
    margin-top: 0;
    margin-bottom: 1rem;
    padding-bottom: .3rem;
    border-bottom: 2px solid var(--brand-border-weak);
    position: relative;
  }
  
  .section h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--brand);
  }
  .pill-list{
    list-style: none; padding: 0; margin: 6px 0 0;
    display: flex; flex-wrap: wrap; gap: 6px;
  }
  .pill-list li{
    padding: .25rem .5rem; border-radius: 999px;
    background: linear-gradient(180deg, var(--brand-tint-weak), rgba(212,163,115,.08));
    border: 1px solid var(--line);
    font-size: 0.8rem;
  }
  .highlights{
    list-style: none; padding: 0; margin: 6px 0 0;
    display: grid; gap: 6px;
  }
  .highlights li{
    padding: .4rem .6rem; border-radius: 8px;
    background: #fdfdfb;
    border: 1px dashed rgba(0,0,0,.14);
    color: #3f3f3f;
    font-size: 0.85rem;
    line-height: 1.4;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
  }
  
  .highlights li.animate {
    opacity: 1;
    transform: translateY(0);
  }
  
  .highlights li:nth-child(1) { transition-delay: 0.1s; }
  .highlights li:nth-child(2) { transition-delay: 0.2s; }
  .highlights li:nth-child(3) { transition-delay: 0.3s; }
  .highlights li:nth-child(4) { transition-delay: 0.4s; }
  
  /* Cards */
/* Featured Projects Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
    margin-top: 12px;
    align-items: stretch; /* equal height */
  }
  
  .card {
    border: 1px solid rgba(176,137,104,.15);
    border-radius: var(--radius, 12px);
    background: var(--surface, #fff);
    overflow: hidden;
    transition: all var(--fast, .2s ease);
    box-shadow: 0 4px 12px rgba(0,0,0,.06);
    display: flex;
    flex-direction: column;
  }
  
  .card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 26px rgba(0,0,0,.12);
    border-color: rgba(176,137,104,.25);
  }
  
  /* --- FIXED SQUARE IMAGE BOX --- */
  .card-cover {
    width: 100%;
    aspect-ratio: 1 / 1;      /* always square */
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(176,137,104,.05); /* subtle backdrop */
    overflow: hidden;
  }
  
  .card-cover img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;       /* keep full image visible */
    border-radius: var(--radius, 8px);
    transition: transform var(--fast, .2s ease);
  }
  
  .card:hover .card-cover img {
    transform: scale(1.05);
  }
  
  /* --- Body --- */
  .card-body {
    padding: 12px;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 6px;
  }
  
  .card-title {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.35;
    margin: 0;
  }
  
  .card-text {
    font-size: 0.85rem;
    color: var(--muted, #666);
    line-height: 1.45;
    margin: 0;
    flex: 1 1 auto;
  }
  
  
  /* Quick links */
  .link-list{ list-style: none; padding: 0; margin: 6px 0 0; display: grid; gap: 4px; }
  .link-list a{ font-size: 0.85rem; }
  .link-list a::after{ content:" ↗"; opacity:.7; }
  
  /* =========================================================
     Footer
     ========================================================= */
  .site-footer{
    color: var(--muted); text-align: center;
    padding: 0.8rem 12px;
    margin-top: 1rem;
    margin-inline: auto;
    background: rgba(240,236,228,.95);
    border-top: 1px solid rgba(176,137,104,.3);
    box-shadow: 0 -2px 12px rgba(0,0,0,.06);
    min-height: 6vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
  }
  
  /* =========================================================
     Academic Education Section
     ========================================================= */
  .education-grid {
    display: grid;
    gap: 12px;
    margin-top: 8px;
  }
  
  .education-item {
    padding: 12px;
    background: linear-gradient(135deg, 
      rgba(255,255,255,.98), 
      rgba(240,236,228,.95));
    border: 1px solid var(--brand-border-weak);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    transition: all var(--fast);
  }
  
  .education-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--brand-border-strong);
  }
  
  .education-header {
    margin-bottom: 6px;
  }
  
  .institution {
    margin: 0 0 4px;
    color: var(--brand);
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.2;
  }
  
  .degree {
    display: block;
    font-weight: 500;
    font-size: 0.85rem;
    color: var(--fg);
    margin-bottom: 4px;
  }
  
  .education-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 0.8rem;
    color: var(--muted);
  }
  
  .duration, .location, .gpa {
    padding: 2px 6px;
    background: var(--brand-tint-weak);
    border-radius: 4px;
    font-weight: 500;
  }
  
  .gpa {
    background: var(--brand-tint-medium);
    color: var(--brand);
    font-weight: 600;
  }
  
  .education-achievements {
    margin-top: 8px;
  }
  
  .achievement-list {
    margin: 0;
    padding-left: 16px;
    color: var(--muted);
    line-height: 1.4;
    font-size: 0.8rem;
  }
  
  .achievement-list li {
    margin-bottom: 2px;
  }
  
  .achievement-list li:last-child {
    margin-bottom: 0;
  }
  
  /* =========================================================
     3D Tilt Effect for Cards
     ========================================================= */
  .card {
    transform-style: preserve-3d;
    perspective: 1000px;
  }
  
  .card.tilt {
    transition: transform .1s ease;
  }
  
  .card-body {
    transform: translateZ(20px);
  }
  
  /* =========================================================
     Animated Stats Counter
     ========================================================= */
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-top: 20px;
  }
  
  .stat-box {
    text-align: center;
    padding: 1.5rem 1rem;
    background: linear-gradient(135deg, 
      rgba(255,255,255,.95), 
      rgba(240,236,228,.92));
    border: 2px solid var(--brand-border-weak);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    transition: all var(--fast);
    position: relative;
    overflow: hidden;
  }
  
  .stat-box::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--brand-tint-weak), var(--brand-tint-medium));
    opacity: 0;
    transition: opacity .3s ease;
  }
  
  .stat-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--brand-border-strong);
  }
  
  .stat-box:hover::before {
    opacity: 1;
  }
  
  .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--brand);
    font-family: 'Lora', Georgia, serif;
    position: relative;
    z-index: 1;
  }
  
  .stat-label {
    font-size: .95rem;
    color: var(--muted);
    margin-top: .5rem;
    font-weight: 500;
    position: relative;
    z-index: 1;
  }
  
  /* =========================================================
     Progress/Skill Bars
     ========================================================= */
  .skill-bar {
    margin: 1rem 0;
    position: relative;
  }
  
  .skill-bar-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: .5rem;
    font-weight: 500;
    font-size: .95rem;
  }
  
  .skill-bar-track {
    height: 12px;
    background: rgba(0,0,0,.08);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0,0,0,.1);
  }
  
  .skill-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--brand), var(--brand2), var(--brand3));
    border-radius: 999px;
    width: 0;
    transition: width 1.5s cubic-bezier(.2,.8,.2,1);
    position: relative;
    box-shadow: 0 2px 8px rgba(176,137,104,.4);
  }
  
  .skill-bar-fill::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, 
      transparent, 
      rgba(255,255,255,.3), 
      transparent);
    animation: shimmer 2s infinite;
  }
  
  @keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
  }
  
  .skill-bar.animate .skill-bar-fill {
    width: var(--skill-width);
  }
  
  /* =========================================================
     Professional Timeline - Improved Alignment
     ========================================================= */
  .timeline {
    position: relative;
    padding: 0.5rem 0;
    margin-top: 8px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    align-items: start;
  }
  
  .timeline-item {
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    transition: all .5s cubic-bezier(.2,.8,.2,1);
    z-index: 1;
  }
  
  .timeline-item.animate {
    opacity: 1;
    transform: translateY(0);
  }
  
  .timeline-item:nth-child(1) { transition-delay: .05s; }
  .timeline-item:nth-child(2) { transition-delay: .1s; }
  .timeline-item:nth-child(3) { transition-delay: .15s; }
  .timeline-item:nth-child(4) { transition-delay: .2s; }
  
  .timeline-content {
    padding: 12px;
    background: linear-gradient(135deg, 
      rgba(255,255,255,.98), 
      rgba(240,236,228,.95));
    border: 1px solid var(--brand-border-weak);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    transition: all var(--fast);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
  }
  
  .timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--brand-border-strong);
  }
  
  .timeline-dot {
    width: 10px;
    height: 10px;
    background: var(--brand);
    border: 2px solid var(--surface);
    border-radius: 50%;
    position: absolute;
    left: 8px;
    top: 12px;
    z-index: 2;
    box-shadow: 0 0 0 2px var(--brand-tint-medium);
    transition: all .3s ease;
  }
  
  .timeline-item:hover .timeline-dot {
    transform: scale(1.25);
    box-shadow: 0 0 0 6px var(--brand-tint-medium);
  }
  
  .timeline-date {
    font-weight: 600;
    color: var(--brand);
    font-size: 0.75rem;
    margin-bottom: 6px;
    /* padding-left: 20px; */
    background: var(--brand-tint-weak);
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
    width: fit-content;
    border: 1px solid var(--brand-border-weak);
  }
  
  .timeline-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 6px;
    line-height: 1.3;
    /* padding-left: 20px; */
    color: var(--fg);
  }
  
  .timeline-description {
    color: var(--muted);
    line-height: 1.4;
    font-size: 0.8rem;
    margin: 0;
    /* padding-left: 20px; */
    flex-grow: 1;
  }
  
  /* Tablet: Single column */
  @media (max-width: 980px) {
    .timeline {
      grid-template-columns: 1fr;
      gap: 8px;
    }
  }
  
  /* Mobile: Even more compact */
  @media (max-width: 640px) {
    .timeline {
      gap: 6px;
    }
    
    .timeline-content {
      padding: 8px;
    }
    
    .timeline-dot {
      width: 8px;
      height: 8px;
      left: 6px;
      top: 6px;
    }
    
    .timeline-date,
    .timeline-title,
    .timeline-description {
      padding-left: 16px;
    }
    
    .timeline-title {
      font-size: 0.85rem;
    }
    
    .timeline-description {
      font-size: 0.75rem;
    }
  }
  
  /* =========================================================
     Scroll Progress Bar
     ========================================================= */
  .scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(0,0,0,.05);
    z-index: 100;
  }
  
  .scroll-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--brand), var(--brand2), var(--brand3));
    width: 0%;
    transition: width .1s ease;
    box-shadow: 0 0 10px rgba(176,137,104,.5);
  }
  
  /* =========================================================
     Tooltip System
     ========================================================= */
  .tooltip-wrapper {
    position: relative;
    display: inline-block;
  }
  
  .tooltip {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(-5px);
    background: var(--fg);
    color: #fff;
    padding: .5rem .8rem;
    border-radius: 8px;
    font-size: .85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all .25s ease;
    z-index: 1000;
  }
  
  .tooltip::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--fg);
  }
  
  .tooltip-wrapper:hover .tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  
  /* =========================================================
     Back to Top Button
     ========================================================= */
  .back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--brand), var(--brand2));
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all .3s ease;
    z-index: 50;
  }
  
  .back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
  }
  
  .back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(176,137,104,.3);
  }
  
  .back-to-top:active {
    transform: translateY(-2px);
  }
  
  /* =========================================================
     Responsive
     ========================================================= */
  @media (max-width: 980px){
    .card-grid{ grid-template-columns: repeat(2,1fr); }
  }
  @media (max-width: 640px){
    .hero-flex{ flex-direction: column; text-align: center; }
    .polaroid{
      transform: rotate(0deg);
      margin-top: 0; margin-bottom: 0;
      max-width: 280px; min-height: 340px;
    }
    .card-grid{ grid-template-columns: 1fr; }
  }

/* =========================================================
   Research Page Styles - Academic Publication Layout
   ========================================================= */

/* Section note for equal contribution */
.section-note {
  font-size: 0.8rem;
  color: var(--muted);
  font-style: italic;
  margin: 0.5rem 0 1rem;
}

/* Publication Item */
.publication-item {
  margin-top: 16px;
  padding: 14px;
  background: linear-gradient(135deg, 
    rgba(255,255,255,.98), 
    rgba(240,236,228,.95));
  border: 1px solid var(--brand-border-weak);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  transition: all var(--fast);
}

.publication-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-border-strong);
}

/* Preprint / Under Review styling */
.publication-preprint {
  border-style: dashed;
  box-shadow: var(--shadow-sm);
}

/* Publication title */
.pub-title {
  margin: 0 0 8px;
  font-size: 1.05rem;
  color: var(--fg);
  line-height: 1.4;
  font-weight: 600;
}

/* Authors */
.pub-authors {
  margin: 0 0 8px;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

/* Venue row */
.pub-venue-row {
  margin-bottom: 8px;
}

/* Venue badges */
.venue-badge {
  padding: 3px 8px;
  background: var(--brand-tint-medium);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--brand);
  display: inline-block;
}

.venue-badge-preprint {
  background: rgba(176,137,104,.12);
  color: var(--muted);
}

/* Abstract */
.pub-abstract {
  margin: 0 0 12px;
  line-height: 1.6;
  color: var(--fg);
  font-size: 0.9rem;
}

/* Publication links */
.pub-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pub-link {
  padding: 6px 12px;
  color: white;
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.85rem;
  transition: all var(--fast);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.pub-link-code {
  background: var(--brand);
}

.pub-link-code:hover {
  background: var(--brand2);
  transform: translateY(-1px);
}

.pub-link-paper {
  background: var(--brand2);
}

.pub-link-paper:hover {
  background: var(--brand);
  transform: translateY(-1px);
}

/* =========================================================
   Project Metadata
   ========================================================= */
.project-meta {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0 0 6px;
  font-weight: 500;
}

.project-tech {
  margin-top: auto;
  padding-top: 8px;
}

/* =========================================================
   Internship Grid & Items
   ========================================================= */
.internship-grid {
  margin-top: 12px;
  display: grid;
  gap: 12px;
}

.internship-item {
  padding: 14px;
  background: linear-gradient(135deg, 
    rgba(255,255,255,.98), 
    rgba(240,236,228,.95));
  border: 1px solid var(--brand-border-weak);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  transition: all var(--fast);
}

.internship-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-border-strong);
}

/* Internship header with title and date */
.internship-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.internship-title {
  margin: 0;
  font-size: 1rem;
  color: var(--fg);
  font-weight: 600;
}

.internship-date {
  padding: 3px 8px;
  background: var(--brand-tint-weak);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--brand);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Organization info */
.internship-org {
  margin: 0 0 8px;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

/* Description */
.internship-description {
  margin: 0 0 8px;
  line-height: 1.6;
  color: var(--fg);
  font-size: 0.9rem;
}

/* =========================================================
   About Page Styles - Academic & Clean
   ========================================================= */

/* Text blocks with consistent academic styling */
.about-text {
  line-height: 1.7;
  color: var(--fg);
  margin-top: 0.1rem;
  margin-bottom: 0.1rem;
}

.about-text:last-child {
  margin-bottom: 0;
}

/* Academic list styling */
.about-list {
  line-height: 1.8;
  color: var(--fg);
  margin-left: 0.05rem;
  margin-bottom: 0;
  margin-top: 0;
}

.about-list li {
  margin-bottom: 0.1rem;
}

.about-list li:last-child {
  margin-bottom: 0;
}

/* Contact box */
.contact-box {
  padding: 14px;
  background: linear-gradient(135deg, 
    rgba(255,255,255,.98), 
    rgba(240,236,228,.95));
  border: 1px solid var(--brand-border-weak);
  border-radius: var(--radius);
  margin-top: 12px;
}

.contact-info {
  margin: 0;
  line-height: 1.8;
  color: var(--fg);
}

.contact-link {
  color: var(--brand);
  text-decoration: none;
  transition: color var(--fast);
}

.contact-link:hover {
  color: var(--brand2);
  text-decoration: underline;
}

/* =========================================================
   Responsive adjustments
   ========================================================= */
@media (max-width: 640px) {
  .pub-title {
    font-size: 0.95rem;
  }
  
  .pub-abstract,
  .internship-description {
    font-size: 0.85rem;
  }
  
  .internship-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .internship-date {
    align-self: flex-start;
  }
  
  .about-list {
    margin-left: 0.05rem;
  }
}

/* ============================================
   CV PAGE STYLES (responsive + mobile-friendly)
   ============================================ */

/* Make the CV page container a bit wider on desktop for readability */
.cv-page .container {
  max-width: 1200px;
}

/* Header */
.cv-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.cv-header h2 {
  margin: 0;
}

.cv-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.2rem;
  background: #2563eb;
  color: #fff;
  text-decoration: none;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, background 0.2s ease;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.cv-download-btn:hover { background: #1d4ed8; transform: translateY(-1px); }
.cv-download-btn:active { transform: translateY(0); }

/* Viewer wrapper: remove clipping and center */
#cv .inner {
  overflow: visible; /* was hidden; can clip embedded PDF renderers */
}

/* CV Viewer:
   - Keep it centered
   - True A4 portrait aspect ratio (1 : 1.414)
   - Height derives from width so it scales nicely on any screen
*/
.cv-viewer {
  width: 100%;
  border-radius: 12px;
  border: 1px solid #e5e7eb;
  background: #f9fafb;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: 0;
}

/* The actual embed “box” that controls sizing */
.cv-frame {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 1 / 1.414;      /* A4 portrait */
  /* For very short viewports, don’t let it be absurdly tall */
  max-height: calc(100dvh - 20vh); /* leave room for header/footer */
}

/* Make all embed types fill the box */
.cv-frame iframe,
.cv-frame object,
.cv-frame embed {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Note under the viewer */
.cv-note {
  margin-top: 0.75rem;
  text-align: center;
  font-size: 0.9rem;
  color: #6b7280;
}
.cv-note a { color: #2563eb; text-decoration: none; }
.cv-note a:hover { text-decoration: underline; }

/* Mobile tweaks */
@media (max-width: 860px) {
  .cv-header { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .cv-download-btn { width: 100%; justify-content: center; }
  .cv-frame { max-height: calc(100dvh - 24vh); }
}

@media (max-width: 480px) {
  .cv-frame { max-height: calc(100dvh - 28vh); }
}