/* This stylesheet controls the shared visual design for the Montgomery Group website. */
/* ==========================================================
   Montgomery Group - Unified Style
   style-A inspired theme
   dark edges + light content panels + clean academic layout
   ========================================================== */

/* Theme variables: change these colors and sizes to update the whole site. */
:root{
  --bg:#03122b;
  --panel:#e9e9eb;
  --panel-2:#f4f4f5;
  --text:#0b1328;
  --muted:#4c5870;
  --link:#2d63e2;
  --line:#cfd3da;
  --accent:#4d7dff;
  --shadow: 0 18px 40px rgba(0,0,0,.10);
  --shadow-soft: 0 10px 24px rgba(0,0,0,.08);
  --radius:26px;
}

/* Global reset: makes element sizing easier to control. */
*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }

body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

a{ color: var(--link); }
img{ max-width:100%; height:auto; display:block; }

.container{
  width: min(1200px, calc(100% - 64px));
  margin: 0 auto;
}

/* =========================
   Hero
   ========================= */
.hero{
  position: relative;
  height: 295px;
  overflow: hidden;
}

.hero-bg{
  position:absolute;
  inset:0;
  background-size: cover;
  background-position: center;
  transform: scale(1.03);
}

.hero-overlay{
  position:absolute;
  inset:0;
  background: linear-gradient(180deg, rgba(0,0,0,.36), rgba(0,0,0,.18));
}

.hero-inner{
  position:relative;
  height:100%;
  display:flex;
  flex-direction:column;
  justify-content:flex-start;
}

.nav{
  display:flex;
  gap: 18px;
  width: fit-content;
  margin: 18px auto 0;
  padding: 12px 24px;
  justify-content:center;
  border-radius: 999px;
  background: rgba(180,170,185,.45);
  border: 1px solid rgba(255,255,255,.18);
  backdrop-filter: blur(6px);
  box-shadow: 0 8px 22px rgba(0,0,0,.12);
}

.nav-link{
  color: rgba(255,255,255,.95);
  text-decoration:none;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .1px;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

.nav-link:hover{
  color:#fff;
  border-bottom-color: rgba(255,255,255,.72);
}

.nav-link.active{
  color:#fff;
  border-bottom-color:#fff;
}

.hero-title-row{
  flex:1;
  display:flex;
  align-items:center;
  justify-content:center;
  gap: 20px;
  padding: 18px 24px 24px;
}

.hero-avatar{
  width: 92px;
  height: 92px;
  border-radius: 999px;
  overflow:hidden;
  box-shadow: var(--shadow);
  border: 3px solid rgba(255,255,255,.78);
  background: #fff;
}

.hero-avatar img{
  width:100%;
  height:100%;
  object-fit:cover;
}

.hero-title h1{
  margin:0;
  color:#fff;
  font-size: 62px;
  font-weight: 900;
  letter-spacing: .2px;
}

/* =========================
   Sections
   ========================= */
.section{
  background: var(--panel);
  border-radius: var(--radius);
  padding: 34px 36px;
  margin: 34px 0;
  box-shadow: var(--shadow);
}

.section-title{
  margin: 0 0 6px 0;
  font-size: 50px;
  font-weight: 900;
  color: var(--text);
}

.divider{
  height: 1px;
  background: var(--line);
  margin: 16px 0 22px;
}

.content p{
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text);
}

.muted{ color: var(--muted); }

/* =========================
   Buttons
   ========================= */
.btn{
  display:inline-block;
  margin-top: 14px;
  padding: 10px 16px;
  border: 1px solid #c7ccd4;
  border-radius: 10px;
  text-decoration:none;
  color: var(--text);
  background:#fff;
  font-size: 14px;
  font-weight: 600;
}

.btn:hover{
  border-color:#98a2b3;
}

/* =========================
   Publications (general / publications page)
   ========================= */
.pub-list{
  display:flex;
  flex-direction:column;
  gap: 18px;
}

.pub-item{
  display:flex;
  gap: 22px;
  align-items:flex-start;
  padding: 18px 20px;
  background: var(--panel-2);
  border-radius: 18px;
}

.pub-thumb{
  width: 150px;
  flex: 0 0 150px;
}

.pub-thumb img{
  width: 150px;
  height: 96px;
  object-fit: contain;
  padding: 8px;
  background: #fff;
  border: 1px solid #d6dae2;
  border-radius: 12px;
  cursor: zoom-in;
  box-shadow: 0 10px 25px rgba(2,6,23,.08);
}

.pub-thumb img:hover{
  transform: scale(1.03);
  transition: transform .15s ease;
}

.pub-content{
  flex: 1;
  min-width: 0;
}

.pub-title{
  margin:0 0 6px;
  font-size: 22px;
  font-weight: 900;
  line-height: 1.45;
}

.pub-title a{
  color: var(--link);
  text-decoration: none;
}

.pub-title a:hover{
  text-decoration: underline;
  text-underline-offset: 3px;
}

.pub-authors{
  margin: 4px 0 6px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}

.pub-venue{
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.pub-year-title{
  margin-top: 30px;
  margin-bottom: 12px;
  font-size: 22px;
  font-weight: 900;
  border-left: 4px solid var(--accent);
  padding-left: 12px;
  color: var(--text);
}

/* =========================
   Homepage recent publications
   ========================= */
#recent-publications .pub-list{
  gap: 18px;
}

#recent-publications .pub-item{
  display:block;
  background: var(--panel-2);
  border-radius: 20px;
  padding: 22px 20px;
  box-shadow: none;
}

#recent-publications .pub-title{
  font-size: 28px;
  margin-bottom: 10px;
}

#recent-publications .pub-authors{
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 8px;
}

#recent-publications .pub-venue{
  font-size: 14px;
}

/* =========================
   People
   ========================= */
.people-grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.person-card{
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 16px;
  align-items: start;
}

.person-photo{
  display:block;
}

.person-photo img{
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
  border: 1px solid #d7dbe2;
  background: #fff;
}

.person-name{
  display:inline-block;
  font-weight: 700;
  text-decoration: underline;
  margin-bottom: 4px;
}

.person-role{
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 10px;
}

.person-bio{
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.person-detail{
  display:grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  align-items:start;
}

.person-detail-photo img{
  width:100%;
  max-width: 240px;
  height:auto;
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
  border: 1px solid #d7dbe2;
  background: #fff;
}

/* =========================
   Publication detail page
   ========================= */
.pub-detail-title{
  font-size: 46px;
  line-height: 1.18;
  margin-bottom: 10px;
}

.pub-buttons{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 18px 0 22px;
}

.btn.btn-sm{
  padding: 6px 10px;
  font-size: 14px;
}

.pub-subhead{
  margin-top: 22px;
  margin-bottom: 10px;
}

/* =========================
   Contact
   ========================= */
.contact-grid{
  display:grid;
  grid-template-columns: 240px 1fr 220px;
  gap: 24px;
  align-items:start;
}

.contact-photo img{
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
  border: 1px solid #d7dbe2;
  background: #fff;
}

.contact-name{
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 800;
}

.contact-line{
  margin: 10px 0;
  font-size: 14px;
}

.contact-side{
  padding-top: 6px;
}

.contact-link{
  margin: 10px 0;
  font-size: 14px;
}

/* =========================
   Projects
   ========================= */
.project-list{
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-top: 6px;
}

.project-item{
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 18px;
  align-items: start;
  background: var(--panel-2);
  border-radius: 18px;
  padding: 18px;
}

.project-img{
  width: 230px;
  height: 160px;
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #d7dbe2;
  box-shadow: var(--shadow-soft);
}

.project-img img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.project-title{
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
}

.project-title a{
  color: var(--link);
  text-decoration: underline;
}

.project-desc{
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.share-row{
  display:flex;
  align-items:center;
  gap: 10px;
  margin-top: 26px;
}

.share-icon{
  text-decoration: none;
  color: var(--muted);
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 6px;
}

.share-icon:hover{
  background: #f5f5f5;
}

/* =========================
   Lightbox
   ========================= */
.lightbox{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.80);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 22px;
  z-index: 9999;
}

.lightbox.is-open{ display:flex; }

.lightbox-inner{
  max-width: min(1100px, 96vw);
  max-height: 90vh;
  position: relative;
}

.lightbox-img{
  max-width: 100%;
  max-height: 90vh;
  background: #fff;
  border-radius: 10px;
}

.lightbox-close{
  position: absolute;
  top: -12px;
  right: -12px;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 10px 25px rgba(0,0,0,.25);
  cursor: pointer;
  font-size: 18px;
  line-height: 36px;
}

/* =========================
   Footer
   ========================= */
.footer{
  border-top: 1px solid rgba(255,255,255,.14);
  padding: 22px 0;
  margin-top: 18px;
}

.footer-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-copy{
  color: rgba(255,255,255,.72);
  font-size: 13px;
}

.footer-links a{
  color: rgba(255,255,255,.72);
  text-decoration:none;
  font-size: 13px;
}

.footer-links a:hover{
  text-decoration: underline;
}

/* =========================
   Responsive
   ========================= */
@media (max-width: 980px){
  .container{
    width: min(1200px, calc(100% - 32px));
  }

  .hero-title h1{
    font-size: 46px;
  }

  .section{
    padding: 26px 24px;
  }

  .section-title{
    font-size: 40px;
  }

  .people-grid{
    grid-template-columns: 1fr;
  }

  .person-card{
    grid-template-columns: 160px 1fr;
  }

  .contact-grid{
    grid-template-columns: 200px 1fr;
  }

  .contact-side{
    grid-column: 1 / -1;
  }
}

/* Responsive layout: adjusts the site for tablets and smaller screens. */
@media (max-width: 900px){
  .project-item{
    grid-template-columns: 1fr;
  }

  .project-img{
    width: 100%;
    max-width: 360px;
    height: 220px;
  }
}

@media (max-width: 760px){
  .hero{
    height: 250px;
  }

  .nav{
    padding: 10px 16px;
    gap: 14px;
    flex-wrap: wrap;
  }

  .hero-title-row{
    flex-direction: column;
    gap: 12px;
    text-align:center;
  }

  .hero-title h1{
    font-size: 34px;
  }

  .section-title{
    font-size: 32px;
  }

  .pub-item{
    flex-direction: column;
  }

  .pub-thumb{
    width: 100%;
    flex: 0 0 auto;
  }

  .pub-thumb img{
    width: 100%;
    height: 160px;
  }
}

/* Mobile layout: makes navigation and content fit narrow screens. */
@media (max-width: 640px){
  .container{
    width: min(1200px, calc(100% - 24px));
  }

  .person-card{
    grid-template-columns: 1fr;
  }

  .person-photo img,
  .contact-photo img{
    width: 100%;
    height: auto;
  }

  .person-detail{
    grid-template-columns: 1fr;
  }

  .contact-grid{
    grid-template-columns: 1fr;
  }
}