/* =======================================================
   Pedro — Engineering Portfolio
   Shared stylesheet across all pages
   ======================================================= */

:root{
  --paper:#FFFFFF;
  --paper-line:#E6E9EF;
  --paper-alt:#F7F8FB;
  --ink:#111111;
  --navy:#111111;          /* main text colour (black) */
  --navy-dim:#333333;
  --steel:#5A6270;         /* secondary text */
  --sage:#4169E1;          /* accent — royal blue */
  --sage-dim:#2F54C4;
  --royal:#4169E1;         /* header / footer background */
  --royal-deep:#14286B;    /* deep end of the blue gradient */
  --royal-bright:#5B8CFF;  /* bright end of the blue gradient */
  --blue-gradient:linear-gradient(115deg, var(--royal-deep) 0%, #2446B8 38%, var(--royal) 68%, var(--royal-bright) 100%);
  --blueprint-minor:rgba(65,105,225,0.07);
  --blueprint-major:rgba(65,105,225,0.16);
  --on-royal:#FFFFFF;
  --grid:#D9DEE7;
  --grid-soft:#EEF1F6;
  --rocket-body:#e7ecf1;
  --rocket-dark:#0e2038;
  --flame:#F2C879;
  --max:1040px;
}
*{box-sizing:border-box;}
[hidden]{display:none !important;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--navy);
  font-family:'IBM Plex Sans', sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.display{
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  letter-spacing:0.01em;
  color:var(--navy);
  margin:0;
}
p{margin:0 0 14px;}
a{color:var(--navy);}
img{max-width:100%; display:block;}
.wrap{max-width:var(--max); margin:0 auto; padding:0 28px;}

/* ---------- Title block (used on every page) ---------- */
.titleblock{
  position:relative;
  overflow:hidden;
  border-bottom:3px solid var(--royal-bright);
  /* faint white blueprint grid over a royal-to-navy gradient */
  background:
    linear-gradient(rgba(255,255,255,0.07) 1px, transparent 1px) 0 0/24px 24px,
    linear-gradient(90deg, rgba(255,255,255,0.07) 1px, transparent 1px) 0 0/24px 24px,
    radial-gradient(ellipse at 85% -20%, rgba(130,170,255,0.55), transparent 55%),
    var(--blue-gradient);
  color:var(--on-royal);
  box-shadow:0 6px 24px rgba(20,40,107,0.25);
}
.tb-name{text-shadow:0 2px 14px rgba(10,20,60,0.35);}
.titleblock .titleblock-inner{position:relative; z-index:3;}
.titleblock-inner{
  max-width:var(--max);
  margin:0 auto;
  padding:22px 28px 16px;
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  align-items:end;
}
.tb-name{
  font-size:clamp(2.2rem, 5.5vw, 3.6rem);
  line-height:0.92;
  font-family:'Space Grotesk', sans-serif;
}
.tb-name a{text-decoration:none; color:var(--on-royal);}
.tb-role{
  font-weight:500;
  color:var(--on-royal);
  font-size:0.95rem;
  margin-top:8px;
  font-family:'Space Grotesk', sans-serif;
}
.tb-meta{
  text-align:right;
  border-left:1px solid var(--grid);
  padding-left:16px;
  font-size:0.78rem;
  color:var(--steel);
  line-height:1.7;
  white-space:nowrap;
  display:none;
}
.tb-meta .row{display:flex; justify-content:space-between; gap:14px;}
.tb-meta .val{color:var(--navy); font-weight:600; margin-left:10px;}

/* ---------- Sheet-index nav (site nav, every page) ---------- */
nav.index{
  position:sticky; top:0; z-index:20;
  background:rgba(255,255,255,0.94);
  backdrop-filter:blur(4px);
  border-bottom:1px solid var(--grid);
}
nav.index .wrap{
  display:flex;
  flex-wrap:wrap;          /* wrap instead of scrolling — no scroll bars */
  padding:0 28px;
}
nav.index a{
  flex:0 0 auto;
  text-decoration:none;
  color:var(--steel);
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  font-size:0.98rem;
  letter-spacing:0.03em;
  padding:14px 18px;
  border-right:1px solid var(--grid);
  white-space:nowrap;
  transition:color 0.15s ease;
}
nav.index a:first-child{padding-left:0;}
nav.index a .num{color:var(--sage); margin-right:8px;}
nav.index a:hover, nav.index a.current{color:var(--navy);}
/* Underline drawn inside the link so it never pokes outside the bar */
nav.index a.current{box-shadow:inset 0 -2px 0 var(--sage);}

/* Projects page: main nav + sub-nav pinned together as one block, so the
   sub-nav sits under the main nav instead of covering it. */
.nav-stack{position:sticky; top:0; z-index:20;}
.nav-stack nav.index{position:static;}
/* Jump links (#research etc.) land below the pinned menus */
section.sheet[id]{scroll-margin-top:60px;}

/* Sub-nav on the Projects page (Formal Research / NDOT / BU) — deliberately
   lighter and smaller than the main site nav above it, so the two rows
   read as different levels of hierarchy rather than duplicates. */
nav.subnav a{
  font-family:'IBM Plex Sans', sans-serif;
  font-weight:500;
  font-size:0.78rem;
  letter-spacing:0.02em;
  text-transform:uppercase;
  color:var(--steel);
  padding:10px 16px;
}
nav.subnav a .num{
  font-weight:600;
  font-size:0.78rem;
}
nav.subnav a:hover, nav.subnav a.current{color:var(--sage);}
nav.subnav a.current{box-shadow:inset 0 -2px 0 var(--sage);}

/* ---------- Sheets (section wrappers, grid paper bg) ---------- */
/* Blueprint paper: fine 24px grid with a heavier line every 120px */
section.sheet{
  background-color:var(--paper);
  background-image:
    linear-gradient(var(--blueprint-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--blueprint-major) 1px, transparent 1px),
    linear-gradient(var(--blueprint-minor) 1px, transparent 1px),
    linear-gradient(90deg, var(--blueprint-minor) 1px, transparent 1px);
  background-size:120px 120px, 120px 120px, 24px 24px, 24px 24px;
  background-position:center top;
  border-bottom:1px solid var(--grid);
  padding:56px 0 64px;
}
section.sheet:nth-of-type(even){background-color:#F4F7FF;}

.sheet-header{
  display:flex;
  align-items:baseline;
  gap:16px;
  margin-bottom:8px;
  padding-bottom:14px;
  border-bottom:3px solid transparent;
  border-image:linear-gradient(90deg, var(--royal-deep), var(--royal) 55%, rgba(91,140,255,0.15)) 1;
}
.sheet-header .sheet-num{
  font-family:'Space Grotesk', sans-serif;
  font-weight:900;
  font-size:1.4rem;
  color:var(--sage);
}
.sheet-header h2{
  font-size:clamp(1.6rem, 4vw, 2.4rem);
  line-height:1;
  font-family:'Space Grotesk', sans-serif;
}
.sheet-sub{
  color:var(--steel);
  font-size:0.95rem;
  max-width:64ch;
  margin:14px 0 34px;
}

/* ---------- About Me quote (home page) ---------- */
.about-quote{
  margin:22px 0 20px;
  padding:4px 0 4px 18px;
  border-left:3px solid var(--sage);
  font-family:'Space Grotesk', sans-serif;
  font-size:1.15rem;
  font-style:italic;
  line-height:1.5;
  color:var(--navy);
  max-width:56ch;
}

.about-quote-cite{
  display:block;
  margin-top:8px;
  font-family:'IBM Plex Sans', sans-serif;
  font-size:0.88rem;
  font-style:normal;
  font-weight:600;
  letter-spacing:0.02em;
  color:var(--royal-deep);
}

/* ---------- Timeline Layout (Outside Hobbies section) ---------- */
.timeline-container{
  position:relative;
  padding:40px 0;
}
.timeline-line{
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:2px;
  background:linear-gradient(180deg, var(--royal-deep), var(--royal) 50%, var(--royal-bright));
  transform:translateX(-50%);
}
.timeline-card{
  display:flex;
  margin-bottom:40px;
  width:calc(50% - 20px);
}
.timeline-card-top{
  flex-direction:row;
  justify-content:flex-end;
  margin-right:auto;
}
.timeline-card-bottom{
  flex-direction:row-reverse;
  justify-content:flex-end;
  margin-left:auto;
}
.timeline-card .card{
  position:relative;
  box-shadow:0 2px 12px rgba(17,17,17,0.08);
  transition:all 0.3s ease;
}
.timeline-card .card:hover{
  box-shadow:0 8px 20px rgba(65,105,225,0.18);
  transform:translateY(-4px);
}
@media (max-width:768px){
  .timeline-line{left:20px;}
  .timeline-card,
  .timeline-card-top,
  .timeline-card-bottom{
    width:calc(100% - 50px);
    margin-left:60px !important;
    margin-right:0 !important;
  }
  .timeline-card-bottom{flex-direction:row;}
}

/* ---------- Project / hobby cards with 3D projection hover ---------- */
/* Flex rows so a short last row (e.g. 2 cards under 3) sits centered.
   3 per row on desktop, 2 on tablets, 1 on phones. */
.card-grid{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:20px;
  perspective:1000px;
}
.card-grid > *{flex:0 0 calc((100% - 40px) / 3); min-width:0;}
@media (max-width:900px){ .card-grid > *{flex-basis:calc((100% - 20px) / 2);} }
@media (max-width:560px){ .card-grid > *{flex-basis:100%;} }
.card{
  background:var(--paper);
  border:1px solid var(--grid);
  box-shadow:0 2px 10px rgba(20,40,107,0.06);
  padding:20px 20px 22px;
  display:flex;
  flex-direction:column;
  transition:all 0.3s cubic-bezier(0.23, 1, 0.320, 1);
  transform-style:preserve-3d;
  cursor:pointer;
  position:relative;
  text-decoration:none;
  color:inherit;
}
.card:hover,.card:visited,.card:active{text-decoration:none; color:inherit;}
.card::before{
  content:'';
  position:absolute;
  inset:0;
  background:radial-gradient(circle at 30% 30%, rgba(65,105,225,0.10), transparent 70%);
  opacity:0;
  transition:opacity 0.3s ease;
  pointer-events:none;
  border-radius:2px;
}
.card:hover{
  transform:translateY(-12px) translateZ(20px) rotateX(2deg) rotateY(2deg);
  box-shadow:
    0 20px 40px rgba(17,17,17,0.12),
    0 8px 20px rgba(65,105,225,0.16);
  border-color:var(--sage);
}
.card:hover::before{
  opacity:1;
}
.card .no{
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  font-size:0.85rem;
  color:var(--steel);
  letter-spacing:0.04em;
  transition:color 0.3s ease;
}
.card:hover .no{
  color:var(--sage);
}
.card h3{
  font-size:1.3rem;
  margin:8px 0 8px;
  line-height:1.05;
  transition:color 0.3s ease;
  font-family:'Space Grotesk', sans-serif;
  color:var(--navy);
}
.card:hover h3{
  color:var(--sage);
}
.card p{
  font-size:0.9rem;
  color:var(--navy);
}
.tags{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  margin-top:auto;
  padding-top:10px;
  transition:all 0.3s ease;
}
.tags span, .tags a{
  font-size:0.72rem;
  color:var(--royal-deep);
  background:#F2F6FF;
  border:1px solid #A9BBEA;
  padding:2px 8px;
  transition:all 0.3s ease;
}
.card:hover .tags span{
  background:var(--blue-gradient);
  color:var(--paper);
  border-color:var(--royal);
}

.card.placeholder{border-style:dashed; color:var(--steel);}
.card.placeholder .no{color:var(--grid);}
.card.placeholder h3{color:var(--steel);}
.card.filled{border-color:#C8D3EC; border-top:3px solid var(--royal);}
.card.filled .no{color:var(--sage);}

/* ---------- Photo slots (robust image handling) ----------
   Usage:
   <div class="photo-slot">
     <img class="photo" src="images/your-file.jpg" alt="Describe the photo"
          onerror="this.style.display='none'; this.nextElementSibling.style.display='flex';">
     <div class="photo-fallback">Drop images/your-file.jpg here</div>
   </div>
------------------------------------------------------------ */
.photo-slot{
  position:relative;
  border:1px solid var(--grid);
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--grid-soft);
  transition:all 0.3s cubic-bezier(0.23, 1, 0.320, 1);
  transform-style:preserve-3d;
}
.photo-slot:hover{
  transform:translateY(-8px) translateZ(15px) scale(1.02);
  box-shadow:0 15px 35px rgba(17,17,17,0.14), 0 0 24px rgba(65,105,225,0.12);
  border-color:var(--sage);
}
.photo-slot .photo{
  width:100%; height:100%;
  object-fit:cover;
  transition:transform 0.3s ease;
}
.photo-slot:hover .photo{
  transform:scale(1.05);
}
.photo-fallback{
  display:none;
  position:absolute; inset:0;
  align-items:center; justify-content:center;
  text-align:center;
  padding:16px;
  font-size:0.8rem;
  color:var(--steel);
  border:1px dashed var(--grid);
}
.photo-slot.wide{aspect-ratio:16/9;}
.photo-slot.square{aspect-ratio:1/1;}
.photo-slot.tall{aspect-ratio:3/4;}

.photo-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(220px, 1fr));
  gap:16px;
  perspective:1000px;
}

/* ---------- Buttons / links ---------- */
.btn{
  display:inline-block;
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  letter-spacing:0.02em;
  font-size:1rem;
  color:var(--paper);
  background:var(--navy);
  border:1px solid var(--navy);
  padding:11px 22px;
  text-decoration:none;
  transition:all 0.2s ease;
  cursor:pointer;
  position:relative;
  overflow:hidden;
}
.btn:hover{
  background:var(--navy-dim);
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(17,17,17,0.18), 0 0 16px rgba(65,105,225,0.2);
}
.btn.sage{background:var(--blue-gradient); background-size:160% 100%; background-position:0 0; border-color:var(--royal);}
.btn.sage:hover{background:var(--blue-gradient); background-size:160% 100%; background-position:100% 0; box-shadow:0 8px 22px rgba(36,70,184,0.35);}
.btn.outline{background:transparent; color:var(--navy); border-color:var(--navy);}
.btn.outline:hover{background:var(--navy); color:var(--paper);}

/* ---------- Forms (contact page) ---------- */
form.contact-form{
  display:grid;
  gap:16px;
  max-width:520px;
}
form.contact-form label{
  font-size:0.8rem;
  font-weight:600;
  color:var(--steel);
  display:block;
  margin-bottom:6px;
  font-family:'Space Grotesk', sans-serif;
}
form.contact-form input,
form.contact-form textarea{
  width:100%;
  font-family:'IBM Plex Sans', sans-serif;
  font-size:0.95rem;
  padding:10px 12px;
  border:1px solid var(--grid);
  background:var(--paper);
  color:var(--navy);
  transition:all 0.3s ease;
}
form.contact-form input:focus,
form.contact-form textarea:focus{
  outline:2px solid var(--sage);
  outline-offset:1px;
  box-shadow:0 0 0 4px rgba(65,105,225,0.15);
}
form.contact-form textarea{resize:vertical; min-height:130px;}
form.contact-form input[aria-invalid="true"],
form.contact-form textarea[aria-invalid="true"]{border-color:#C2412D; box-shadow:0 0 0 3px rgba(194,65,45,0.12);}
.field-error{display:block; min-height:0; margin-top:4px; font-size:0.8rem; color:#C2412D;}
.field-error:empty{display:none;}
.form-status{font-size:0.88rem; margin:4px 0 0; padding:10px 12px; border-left:3px solid var(--steel); background:#F4F7FF;}
.form-status.is-success{border-color:#1F8A4C; color:#14532D; background:#ECF8F1;}
.form-status.is-error{border-color:#C2412D; color:#7A1F12; background:#FDF1EE;}
.form-status a{color:inherit; font-weight:600;}
#contact-submit:disabled{opacity:0.7; cursor:wait; transform:none;}

.contact-list{list-style:none; margin:0; padding:0;}
.contact-list li{
  display:flex; gap:14px; align-items:baseline;
  padding:14px 0;
  border-bottom:1px solid var(--grid);
}
.contact-list .k{
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  color:var(--sage);
  font-size:0.85rem;
  min-width:110px;
}

/* Text that changes with layout (e.g. "to the right" vs "below") */
.only-narrow{display:none;}

/* ---------- Footer ---------- */
footer{
  position:relative;
  overflow:hidden;
  padding:36px 0 60px;
  background:
    linear-gradient(rgba(255,255,255,0.07) 1px, transparent 1px) 0 0/24px 24px,
    linear-gradient(90deg, rgba(255,255,255,0.07) 1px, transparent 1px) 0 0/24px 24px,
    radial-gradient(ellipse at 15% 120%, rgba(130,170,255,0.45), transparent 55%),
    var(--blue-gradient);
  border-top:3px solid var(--royal-bright);
  color:var(--on-royal);
}
footer .wrap{
  position:relative;
  z-index:3;
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  font-size:0.85rem;
  color:var(--on-royal);
}
footer a{color:var(--on-royal);}

/* ---------- Animated rocket + stars in the header and footer ----------
   site.js injects the stars and rocket into every .titleblock and footer. */
.strip-stars{position:absolute; inset:0; overflow:hidden; z-index:1; pointer-events:none;}
.strip-star{
  position:absolute;
  width:1.5px; height:1.5px;
  background:#fff;
  border-radius:50%;
  opacity:0.5;
  animation:stripTwinkle 3s ease-in-out infinite;
}
@keyframes stripTwinkle{0%,100%{opacity:0.15;} 50%{opacity:0.85;}}
.strip-rocket{
  position:absolute;
  width:28px; height:49px;
  z-index:2;
  pointer-events:none;
}
.strip-rocket-header{animation:stripDriftRight 12s linear infinite;}
.strip-rocket-footer{animation:stripDriftLeft 15s linear infinite;}
@keyframes stripDriftRight{
  0%{left:-6%; top:70%; transform:rotate(90deg);}
  100%{left:106%; top:25%; transform:rotate(90deg);}
}
@keyframes stripDriftLeft{
  0%{left:106%; top:25%; transform:rotate(-90deg);}
  100%{left:-6%; top:70%; transform:rotate(-90deg);}
}
.strip-flame{animation:flameFlicker 0.3s ease-in-out infinite alternate; transform-origin:center top;}
@keyframes flameFlicker{
  from{opacity:0.6; transform:scaleY(0.85);}
  to{opacity:1; transform:scaleY(1.15);}
}

/* ---------- Fade-in on scroll ----------
   site.js adds .reveal to content blocks and .is-visible once they scroll
   into view. Uses an animation on opacity/translate (not transform/transition)
   so it never fights the cards' existing hover effects. */
.reveal{opacity:0;}
.reveal.is-visible{animation:revealUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;}
@keyframes revealUp{
  from{opacity:0; translate:0 28px;}
  to{opacity:1; translate:0 0;}
}

/* Detail-page tags are links to the filtered Projects page */
.tags a{text-decoration:none; padding:2px 8px;}
.tags a:hover{background:var(--blue-gradient); color:#fff; border-color:var(--royal);}
/* Tag that matches the active filter */
.tags span.is-match{background:var(--blue-gradient); color:#fff; border-color:var(--royal);}

/* ---------- Projects page: filter by skill (collapsible) ---------- */
.filter-band{
  background:#FFFFFF;
  border-bottom:1px solid var(--grid);
  padding:12px 0;
}
.filter-head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 14px;
}
.filter-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  font-size:0.8rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--royal-deep);
  background:#F2F6FF;
  border:1px solid #A9BBEA;
  border-radius:999px;
  padding:7px 14px;
  cursor:pointer;
  transition:border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.filter-toggle:hover{border-color:var(--royal); box-shadow:0 2px 8px rgba(36,70,184,0.15);}
.filter-icon{width:14px; height:14px;}
.filter-caret{width:16px; height:16px; transition:transform 0.3s ease;}
.filter-band.is-open .filter-caret{transform:rotate(180deg);}
.filter-active{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:0.82rem;
  font-weight:500;
  color:#fff;
  background:var(--blue-gradient);
  border-radius:999px;
  padding:4px 6px 4px 12px;
}
.filter-clear{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:20px; height:20px;
  border:none;
  border-radius:50%;
  background:rgba(255,255,255,0.22);
  color:#fff;
  font-size:1rem;
  line-height:1;
  cursor:pointer;
}
.filter-clear:hover{background:rgba(255,255,255,0.4);}
.filter-status{font-size:0.85rem; color:var(--steel);}

/* Slide open/closed; collapsed chips are hidden from keyboard and screen readers */
.filter-panel{
  display:grid;
  grid-template-rows:0fr;
  visibility:hidden;
  transition:grid-template-rows 0.35s ease, visibility 0s linear 0.35s;
}
.filter-band.is-open .filter-panel{
  grid-template-rows:1fr;
  visibility:visible;
  transition:grid-template-rows 0.35s ease, visibility 0s;
}
.filter-panel-inner{overflow:hidden;}
.filter-chips{display:flex; flex-wrap:wrap; gap:8px; padding-top:14px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-family:'IBM Plex Sans', sans-serif;
  font-size:0.82rem;
  font-weight:500;
  color:var(--royal-deep);
  background:#F2F6FF;
  border:1px solid #A9BBEA;
  border-radius:999px;
  padding:6px 12px;
  cursor:pointer;
  transition:background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.chip:hover{border-color:var(--royal); box-shadow:0 2px 8px rgba(36,70,184,0.15);}
.chip-count{
  font-size:0.72rem;
  font-weight:600;
  min-width:20px;
  text-align:center;
  padding:1px 6px;
  border-radius:999px;
  background:#DCE5FB;
  color:var(--royal-deep);
}
.chip.is-active{background:var(--blue-gradient); color:#fff; border-color:var(--royal);}
.chip.is-active .chip-count{background:rgba(255,255,255,0.22); color:#fff;}
@media (max-width:640px){
  .chip{font-size:0.76rem; padding:5px 10px;}
}

/* ---------- Project page: main photo caption, gallery, viewer ---------- */
.detail-figure{margin:0;}
.detail-caption{
  margin-top:8px;
  font-size:0.82rem;
  color:var(--steel);
  font-style:italic;
}
.photo-slot.is-zoomable{cursor:zoom-in;}

.gallery{margin:44px 0 8px;}
.gallery-head{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding-bottom:10px;
  margin-bottom:18px;
  border-bottom:3px solid transparent;
  border-image:linear-gradient(90deg, var(--royal-deep), var(--royal) 55%, rgba(91,140,255,0.15)) 1;
}
.gallery-head h3{
  font-size:1rem;
  letter-spacing:0.04em;
  text-transform:uppercase;
  color:var(--sage);
}
.gallery-count{font-size:0.85rem; color:var(--steel);}
/* Gallery: 4 per row, rows fill from the left (not centered). */
.gallery-grid{
  display:flex;
  flex-wrap:wrap;
  justify-content:flex-start;
  gap:14px;
}
.gallery-grid > *{flex:0 0 calc((100% - 42px) / 4); min-width:0;}
@media (max-width:900px){ .gallery-grid > *{flex-basis:calc((100% - 28px) / 3);} }
.gallery-item{
  position:relative;
  display:block;
  padding:0;
  border:1px solid #C8D3EC;
  background:#fff;
  aspect-ratio:4/3;
  overflow:hidden;
  cursor:zoom-in;
  box-shadow:0 2px 10px rgba(20,40,107,0.06);
  transition:transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.gallery-item img{width:100%; height:100%; object-fit:cover; display:block; transition:transform 0.35s ease;}
.gallery-item:hover{transform:translateY(-4px); border-color:var(--royal); box-shadow:0 12px 26px rgba(20,40,107,0.16);}
.gallery-item:hover img{transform:scale(1.05);}
.gallery-item.is-video{cursor:pointer;}
.gallery-caption{
  position:absolute;
  left:0; right:0; bottom:0;
  padding:22px 10px 8px;
  font-size:0.76rem;
  line-height:1.3;
  text-align:left;
  color:#fff;
  background:linear-gradient(transparent, rgba(10,20,55,0.82));
}
.gallery-play{
  position:absolute;
  left:50%; top:45%;
  width:52px; height:52px;
  transform:translate(-50%,-50%);
  border-radius:50%;
  background:var(--blue-gradient);
  box-shadow:0 4px 16px rgba(10,20,55,0.45);
  border:2px solid rgba(255,255,255,0.85);
}
.gallery-play::after{
  content:'';
  position:absolute;
  left:54%; top:50%;
  transform:translate(-50%,-50%);
  border-style:solid;
  border-width:9px 0 9px 15px;
  border-color:transparent transparent transparent #fff;
}
.gallery-duration{
  position:absolute;
  top:8px; right:8px;
  font-size:0.7rem;
  font-weight:600;
  color:#fff;
  background:rgba(10,20,55,0.75);
  padding:2px 6px;
  border-radius:4px;
}

/* Full-screen viewer */
html.lb-open{overflow:hidden;}
.lightbox{
  position:fixed;
  inset:0;
  z-index:100;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  padding:56px 16px 24px;
  background:rgba(8,14,40,0.94);
}
.lb-figure{
  margin:0;
  max-width:min(1200px, 100%);
  display:flex;
  flex-direction:column;
  align-items:center;
  min-width:0;
}
.lb-stage{display:flex; align-items:center; justify-content:center;}
.lb-media{
  max-width:100%;
  max-height:calc(100vh - 150px);
  display:block;
  background:#000;
  box-shadow:0 20px 60px rgba(0,0,0,0.5);
}
.lb-caption{
  display:flex;
  gap:16px;
  justify-content:space-between;
  width:100%;
  margin-top:12px;
  color:#E6ECFF;
  font-size:0.92rem;
}
.lb-counter{color:#9FB2E8; white-space:nowrap;}
.lb-btn{
  flex:0 0 auto;
  width:46px; height:46px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,0.35);
  background:rgba(255,255,255,0.08);
  color:#fff;
  font-size:1.8rem;
  line-height:1;
  cursor:pointer;
  transition:background 0.2s ease;
}
.lb-btn:hover{background:rgba(91,140,255,0.45);}
.lb-close{position:absolute; top:12px; right:16px; font-size:1.6rem;}
@media (max-width:640px){
  .gallery-grid{gap:10px;}
  .gallery-grid > *{flex-basis:calc((100% - 10px) / 2);}
  .lightbox{padding:56px 8px 16px;}
  .lb-prev, .lb-next{position:absolute; bottom:18px; width:42px; height:42px;}
  .lb-prev{left:16px;}
  .lb-next{right:16px;}
  .lb-media{max-height:calc(100vh - 190px);}
  .lb-caption{padding:0 64px; flex-direction:column; gap:2px; text-align:center;}
}

/* ---------- Volunteering page: two entries split by a divider line ---------- */
.volunteer-split{
  display:grid;
  grid-template-columns:1fr 1px 1fr;
  gap:48px;
  align-items:stretch;
  perspective:1000px;
}
.volunteer-divider{background:linear-gradient(180deg, var(--royal-deep), var(--royal-bright)); width:2px;}
@media (max-width:720px){
  .volunteer-split{grid-template-columns:1fr; gap:32px;}
  .volunteer-divider{width:auto; height:2px;}
}

/* ---------- Responsive ---------- */
@media (max-width:640px){
  .titleblock-inner{grid-template-columns:1fr; text-align:left;}
  /* Menus: tighter spacing so they fit the screen */
  nav.index .wrap{padding:0 16px;}
  nav.index .wrap{justify-content:space-between; flex-wrap:nowrap;}
  nav.index a{padding:13px 0; font-size:0.8rem; border-right:none;}
  nav.index a .num{display:none;}
  nav.subnav a{padding:9px 0; font-size:0.66rem;}
  /* Two-column layouts stack on phones */
  .two-col{grid-template-columns:1fr !important; gap:32px !important;}
  .only-wide{display:none;}
  .only-narrow{display:inline !important;}
  .tb-meta{border-left:none; padding-left:0; text-align:left; border-top:1px solid var(--grid); padding-top:10px; display:none;}
  .tb-meta .row{justify-content:flex-start;}
  .tb-meta .val{margin-left:auto;}
  
  /* Reduce 3D effects on mobile for better performance */
  .card:hover{
    transform:translateY(-8px);
  }
  .photo-slot:hover{
    transform:translateY(-4px);
  }
}

/* ---------- Accessibility ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--sage);
  outline-offset:2px;
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1 !important;}
  *{
    transition:none !important;
    animation:none !important;
  }
  .card, .photo-slot, .btn{
    transform:none !important;
  }
}

/* ---------- Project detail page ---------- */
.back-link{
  display:inline-block;
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  font-size:0.85rem;
  letter-spacing:0.04em;
  color:var(--sage);
  text-decoration:none;
  margin-bottom:28px;
}
.back-link:hover{color:var(--sage-dim);}
.detail-header{
  border-bottom:2px solid var(--navy);
  padding-bottom:20px;
  margin-bottom:32px;
}
.detail-eyebrow{
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  font-size:0.78rem;
  letter-spacing:0.08em;
  color:var(--sage);
  text-transform:uppercase;
  margin-bottom:8px;
}
.detail-header h2{
  font-size:clamp(1.8rem, 5vw, 3rem);
  line-height:1.05;
}
.detail-header .tags{margin-top:14px;}
.detail-layout{
  display:grid;
  grid-template-columns:1fr 1.2fr;
  gap:40px;
  align-items:start;
}
.detail-photo{margin-bottom:0;}
.detail-block{margin-bottom:26px;}
.detail-block h3{
  font-size:1rem;
  letter-spacing:0.04em;
  text-transform:uppercase;
  color:var(--sage);
  margin-bottom:8px;
}
.detail-block p{
  font-size:0.98rem;
  color:var(--navy);
}
.back-btn{
  margin-top:16px;
}
@media (max-width:800px){
  .detail-layout{grid-template-columns:1fr;}
}