/* Shared design system for the Ahmed Lab site — typography, spacing, and component styles
   layered on top of the original Weebly theme without touching its core files. */

:root{
  --color-accent:#c9912f;
  --color-accent-dark:#a8741c;
  --color-secondary:#1f7a8c;
  --color-dark:#0f2236;
  --color-dark-soft:#1c3b52;
  --color-text:#262e38;
  --color-muted:#5d6b80;
  --color-border:#dde2e8;
  --color-bg-alt:#eef2f7;
  --container-width:1100px;
  --space-xs:8px;
  --space-sm:16px;
  --space-md:32px;
  --space-lg:56px;
  --space-xl:90px;
}

/* ---- Hero slideshow (home page banner) ---- */
.hero-slider{
  display:block !important;
  width:100% !important;
  position:relative;
  overflow:hidden;
  background-image:none !important;
  height:auto !important;
  aspect-ratio:2.2 / 1;
  min-height:420px;
  max-height:85vh;
}
@media screen and (max-width:600px){
  .hero-slider{
    aspect-ratio:4 / 5;
    min-height:380px;
    max-height:80vh;
  }
}
.hero-slide{
  position:absolute;
  top:0; left:0; right:0; bottom:0;
  background-repeat:no-repeat;
  background-position:50% 50%;
  background-size:cover;
  opacity:0;
  transition:opacity 1.4s ease-in-out;
  z-index:0;
}
.hero-slide--active{
  opacity:1;
  z-index:1;
}
.hero-overlay{
  position:absolute;
  top:0; left:0; right:0; bottom:0;
  background:linear-gradient(160deg, rgba(15,34,54,0.22) 0%, rgba(15,34,54,0.10) 35%, rgba(15,34,54,0.20) 65%, rgba(10,20,30,0.46) 100%);
  z-index:2;
}
.hero-slider .wsite-section-content{
  position:relative;
  z-index:3;
}
.hero-slider .wsite-content-title{
  color:#fff !important;
  font-size:34px !important;
  text-shadow:0 2px 10px rgba(0,0,0,0.85), 0 0 26px rgba(0,0,0,0.55);
}
@media screen and (max-width:760px){
  .hero-slider .wsite-content-title{
    font-size:26px !important;
  }
}

/* ---- Header: logo left, nav right, single row (desktop only — mobile keeps the original slide-out menu) ---- */
.header-wrap #logo,
.header-wrap .wsite-logo{
  text-align:left !important;
}
.header-wrap .wsite-logo{
  padding:18px 0 !important;
}
.header-wrap #logo{
  padding:0 24px !important;
}
.site-logo-link{
  display:inline-block;
  text-decoration:none !important;
}
.site-logo-lockup{
  display:block;
  max-width:none !important;
}
.site-logo-lockup .site-logo-main{
  display:block;
  font-family:"Inter",sans-serif !important;
  font-size:27px !important;
  font-weight:800;
  letter-spacing:-0.3px !important;
  text-transform:none !important;
  color:var(--color-dark);
  line-height:1.2;
}
.site-logo-lockup .site-logo-accent{
  color:var(--color-accent);
}
.site-logo-lockup .site-logo-sub{
  display:block;
  font-family:"Inter",sans-serif !important;
  font-size:12px !important;
  font-weight:500;
  letter-spacing:0.4px !important;
  text-transform:uppercase !important;
  color:var(--color-muted);
  line-height:1.4;
  margin-top:4px;
}

/* ---- Nav links: lighter weight, tighter underline, gold accent ---- */
.header-wrap .menu{
  font-weight:500 !important;
}
.header-wrap .menu .wsite-menu-default li a{
  padding-bottom:8px !important;
  border-bottom:2px solid transparent !important;
  color:var(--color-text) !important;
  transition:color .2s ease, border-bottom-color .2s ease;
}
.header-wrap .menu .wsite-menu-default li a:hover,
.header-wrap .menu .wsite-menu-default li#active a{
  border-bottom:2px solid var(--color-accent) !important;
  color:var(--color-dark) !important;
}

@media screen and (min-width: 993px){
  .header-wrap .nav-wrap{
    display:flex;
    align-items:center;
    justify-content:space-between;
    text-align:left !important;
  }
  .header-wrap .menu{
    border-top:none;
    text-align:right !important;
  }
  .header-wrap .menu .container{
    max-width:none;
    width:auto;
    margin:0;
    padding:0 24px;
    box-sizing:border-box;
  }
  .header-wrap .nav-wrap ul{
    padding:0;
  }
}

.site-container{
  max-width:var(--container-width);
  margin:0 auto;
  padding:0 24px;
  box-sizing:border-box;
}

.site-section{
  padding:var(--space-xl) 0;
}

.site-section--alt{
  background:var(--color-bg-alt);
}

.site-section--intro{
  padding:var(--space-lg) 0 0;
}
.site-section--intro .site-rule{
  margin-bottom:var(--space-sm);
}

/* ---- Standalone custom sections outside #main-wrap (e.g. page intros, footer)
   inherit a stale table-cell display + fixed height from the base theme grid;
   force them back to normal block flow. ---- */
.site-block{
  display:block !important;
  height:auto !important;
}

.site-heading{
  text-align:center;
  text-transform:uppercase;
  letter-spacing:1px;
  font-family:"Inter",sans-serif;
  font-weight:700;
  color:var(--color-dark);
  font-size:30px;
  margin:0 0 var(--space-sm) 0;
}

.site-heading--lg{
  font-size:42px;
  line-height:1.25;
}

.site-heading__accent{
  color:var(--color-accent);
}

.site-eyebrow{
  display:block;
  text-align:center;
  text-transform:uppercase;
  letter-spacing:2px;
  font-family:"Inter",sans-serif;
  font-weight:600;
  font-size:13px;
  color:var(--color-accent-dark);
  margin:0 0 var(--space-xs) 0;
}

.site-subtext{
  text-align:center;
  color:var(--color-muted);
  font-family:"Inter",sans-serif;
  font-size:17px;
  line-height:1.7;
  max-width:760px;
  margin:0 auto var(--space-lg) auto;
}

.site-tagline{
  text-align:center;
  color:var(--color-dark-soft);
  font-family:"Inter",sans-serif;
  font-style:italic;
  font-weight:500;
  font-size:17px;
  letter-spacing:0.2px;
  line-height:1.6;
  max-width:900px;
  margin:0 auto;
}

.site-rule{
  width:130px;
  height:24px;
  background:url("chem-flourish.svg") center/contain no-repeat;
  margin:var(--space-sm) auto var(--space-lg) auto;
}

.btn-site{
  display:inline-block;
  padding:13px 34px;
  border:1px solid var(--color-dark);
  border-radius:3px;
  color:var(--color-dark) !important;
  text-transform:uppercase;
  letter-spacing:1px;
  font-size:13px;
  font-family:"Inter",sans-serif;
  font-weight:600;
  text-decoration:none !important;
  background:transparent;
  box-shadow:0 1px 2px rgba(15,34,54,0.05);
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
}

.btn-site:hover{
  background:linear-gradient(135deg, var(--color-dark), var(--color-dark-soft));
  border-color:var(--color-dark);
  color:#fff !important;
  box-shadow:0 10px 22px rgba(15,34,54,0.28);
  transform:translateY(-1px);
}

.btn-site--accent{
  background:var(--color-accent);
  border-color:var(--color-accent);
  color:#fff !important;
}
.btn-site--accent:hover{
  background:var(--color-accent-dark);
  border-color:var(--color-accent-dark);
  color:#fff !important;
  box-shadow:0 10px 22px rgba(0,0,0,0.3);
}

.btn-site--light{
  border-color:rgba(255,255,255,0.85);
  color:#fff !important;
}
.btn-site--light:hover{
  background:#fff;
  border-color:#fff;
  color:var(--color-dark) !important;
  box-shadow:0 10px 22px rgba(0,0,0,0.25);
}

/* ---- Hero slideshow overlay content ---- */
.hero-content{
  max-width:720px;
  margin:0 auto;
  padding:0 16px;
  box-sizing:border-box;
  text-align:center;
}
.hero-content__eyebrow{
  display:block;
  text-transform:uppercase;
  letter-spacing:2px;
  font-family:"Inter",sans-serif;
  font-weight:600;
  font-size:13px;
  color:rgba(255,255,255,0.9);
  text-shadow:0 1px 6px rgba(0,0,0,0.5);
  margin:0 0 14px 0;
}
.hero-content__title{
  font-family:"Inter",sans-serif;
  font-weight:800;
  font-size:44px;
  line-height:1.25;
  color:#fff;
  text-shadow:0 2px 14px rgba(0,0,0,0.55), 0 0 30px rgba(0,0,0,0.35);
  margin:0 0 18px 0;
}
.hero-content__accent{
  color:var(--color-accent);
}
.hero-content__tagline{
  font-family:"Inter",sans-serif;
  font-style:italic;
  font-weight:500;
  font-size:18px;
  line-height:1.6;
  color:rgba(255,255,255,0.92);
  text-shadow:0 1px 8px rgba(0,0,0,0.5);
  margin:0 0 32px 0;
}
.hero-content__actions{
  display:flex;
  justify-content:center;
  gap:16px;
  flex-wrap:wrap;
}
.hero-content__actions .btn-site{
  padding:11px 26px;
  font-size:12px;
}
@media (max-width:760px){
  .hero-content__eyebrow{
    font-size:11px;
    letter-spacing:1px;
    margin-bottom:10px;
  }
  .hero-content__title{
    font-size:24px;
    line-height:1.3;
    margin-bottom:10px;
  }
  .hero-content__tagline{
    font-size:14px;
    line-height:1.5;
    margin-bottom:20px;
  }
  .hero-content__actions{
    gap:10px;
  }
  .hero-content__actions .btn-site{
    padding:9px 20px;
    font-size:11px;
  }
}
@media (max-width:480px){
  .hero-content__eyebrow{
    display:none;
  }
  .hero-content__title{
    font-size:21px;
  }
}

/* ---- Two-column intro / hero blurb ---- */
.intro-grid{
  display:flex;
  align-items:center;
  gap:var(--space-lg);
  flex-wrap:wrap;
}
.intro-grid__text{
  flex:1 1 380px;
  font-family:"Inter",sans-serif;
  font-size:18px;
  line-height:1.8;
  color:var(--color-text);
}
.intro-grid__image{
  flex:1 1 380px;
}
.intro-grid__image img{
  width:100%;
  height:auto;
  display:block;
  border:1px solid var(--color-border);
  border-radius:10px;
  box-shadow:0 8px 24px rgba(15,34,54,0.10);
}

/* ---- Latest updates preview (home page, shown before the gallery) ---- */
.updates-preview-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:var(--space-md);
  margin-bottom:var(--space-md);
}
.update-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:10px;
  overflow:hidden;
  box-shadow:0 1px 3px rgba(15,34,54,0.05);
  transition:box-shadow .25s ease, transform .25s ease;
}
.update-card:hover{
  box-shadow:0 14px 28px rgba(15,34,54,0.10);
  transform:translateY(-2px);
}
.update-card__thumb{
  width:100%;
  height:200px;
  object-fit:cover;
  display:block;
}
.update-card__body{
  padding:var(--space-md);
  display:flex;
  flex-direction:column;
  flex:1;
}
.update-card__date{
  display:block;
  color:var(--color-accent);
  font-family:"Inter",sans-serif;
  font-size:12px;
  font-weight:600;
  letter-spacing:1px;
  text-transform:uppercase;
  margin-bottom:8px;
}
.update-card__title{
  font-family:"Inter",sans-serif;
  font-weight:700;
  font-size:19px;
  line-height:1.4;
  color:var(--color-dark);
  margin:0 0 10px 0;
}
.update-card__excerpt{
  font-family:"Inter",sans-serif;
  font-size:15px;
  line-height:1.7;
  color:var(--color-muted);
  margin:0 0 var(--space-sm) 0;
  flex:1;
}
.update-card__link{
  align-self:flex-start;
  color:var(--color-secondary);
  font-family:"Inter",sans-serif;
  font-weight:600;
  font-size:14px;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s ease, border-bottom-color .2s ease;
}
.update-card__link:hover{
  color:var(--color-accent-dark);
  border-bottom-color:var(--color-accent-dark);
}
.updates-preview__footer{
  text-align:center;
  margin-top:var(--space-sm);
}
@media (max-width:760px){
  .updates-preview-grid{grid-template-columns:1fr;}
}

/* ---- Gallery grid (home page) ---- */
.gallery-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.gallery-grid img{
  width:100%;
  height:260px;
  object-fit:cover;
  display:block;
  border:1px solid var(--color-border);
  border-radius:8px;
  transition:transform .3s ease, box-shadow .3s ease;
}
.gallery-grid img:hover{
  transform:translateY(-3px);
  box-shadow:0 10px 22px rgba(15,34,54,0.14);
}
.gallery-grid__feature{
  grid-column:1 / -1;
}
.gallery-grid__feature img{
  height:420px;
}
@media (max-width:760px){
  .gallery-grid{grid-template-columns:repeat(2,1fr);}
  .gallery-grid img{height:180px;}
  .gallery-grid__feature img{height:260px;}
}

/* ---- Site footer ---- */
.site-footer{
  display:block !important;
  height:auto !important;
  background-color:#eef6ff;
  background-image:url("../media/backgrounds/site-bg-academic.png");
  background-repeat:no-repeat;
  background-position:bottom center;
  background-size:cover;
  border-top:3px solid var(--color-accent);
  padding:22px 0 16px;
}
.site-footer__row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  padding-bottom:14px;
  border-bottom:1px solid rgba(15,34,54,0.12);
}
.site-footer__brand{
  font-family:"Inter",sans-serif;
  font-weight:700;
  font-size:15px;
  letter-spacing:0.3px;
  color:var(--color-dark);
}
.site-footer__nav{
  display:flex;
  gap:20px;
  font-family:"Inter",sans-serif;
  font-weight:500;
  letter-spacing:0.4px;
  text-transform:uppercase;
  font-size:12.5px;
}
.site-footer__nav a{
  color:var(--color-dark-soft);
  text-decoration:none;
  transition:color .2s ease;
}
.site-footer__nav a:hover{
  color:var(--color-accent-dark);
}
.site-footer__copyright{
  text-align:center;
  font-family:"Inter",sans-serif;
  font-size:12.5px;
  color:var(--color-muted);
  padding-top:12px;
}
@media (max-width:600px){
  .site-footer__row{
    flex-direction:column;
    text-align:center;
  }
}

/* ---- Member cards (members.html) ---- */
.member-card{
  display:flex;
  align-items:flex-start;
  flex-wrap:wrap;
  gap:var(--space-md);
  padding:var(--space-md);
  margin-bottom:var(--space-md);
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:10px;
  box-shadow:0 1px 3px rgba(15,34,54,0.05);
  transition:box-shadow .25s ease, transform .25s ease;
}
.member-card:hover{
  box-shadow:0 14px 28px rgba(15,34,54,0.10);
  transform:translateY(-2px);
}
.member-card--pi{
  position:relative;
  overflow:hidden;
  border-color:rgba(201,145,47,0.4);
  background:linear-gradient(135deg, #fffaf0 0%, #ffffff 55%);
  box-shadow:0 2px 12px rgba(201,145,47,0.12);
}
.member-card--pi::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:4px;
  background:var(--color-accent);
}
.member-card--pi:hover{
  box-shadow:0 14px 28px rgba(201,145,47,0.18);
}
.member-photo{
  flex:0 0 260px;
}
.member-photo img{
  display:block;
  width:260px;
  height:auto;
  border-radius:8px;
  box-shadow:0 4px 14px rgba(15,34,54,0.12);
  background:#fff;
  box-sizing:border-box;
}
.member-bio{
  flex:1 1 320px;
  min-width:280px;
  font-family:"Inter",sans-serif;
  color:var(--color-text);
  line-height:1.75;
}
.member-bio .member-name{
  font-family:"Inter",sans-serif;
  font-weight:700;
  font-size:23px;
  letter-spacing:0;
  color:var(--color-dark);
  display:block;
  margin-bottom:4px;
}
.member-bio .member-role{
  display:block;
  color:var(--color-accent);
  text-transform:uppercase;
  font-size:13px;
  letter-spacing:1.5px;
  margin-bottom:18px;
}

/* ---- Contact page ---- */
.contact-card{
  max-width:520px;
  margin:0 auto;
  text-align:center;
  font-family:"Inter",sans-serif;
  color:var(--color-text);
  line-height:2;
  font-size:17px;
}
.contact-card a{
  color:var(--color-accent);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s ease, border-bottom-color .2s ease;
}
.contact-card a:hover{
  color:var(--color-accent-dark);
  border-bottom-color:var(--color-accent-dark);
}
.contact-map{
  border:1px solid var(--color-border);
  border-radius:10px;
  overflow:hidden;
  box-shadow:0 8px 24px rgba(15,34,54,0.10);
}

/* ---- Updates / posts page ---- */
.post-card{
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:10px;
  padding:var(--space-lg) var(--space-md);
  margin-bottom:var(--space-lg);
  box-shadow:0 1px 3px rgba(15,34,54,0.05);
  transition:box-shadow .25s ease, transform .25s ease;
}
.post-card:hover{
  box-shadow:0 14px 28px rgba(15,34,54,0.10);
  transform:translateY(-2px);
}
.post-card__title{
  font-family:"Inter",sans-serif;
  font-weight:700;
  letter-spacing:normal;
  font-size:26px;
  line-height:1.35;
  color:var(--color-dark);
  margin:0 0 6px 0;
}
#wsite-content .post-card__title{
  text-transform:none !important;
  letter-spacing:normal !important;
  color:var(--color-dark) !important;
}
.post-card__date{
  display:block;
  color:var(--color-accent);
  font-family:"Inter",sans-serif;
  font-size:13px;
  letter-spacing:1px;
  text-transform:uppercase;
  margin-bottom:var(--space-md);
}
.post-card__gallery{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:16px;
  margin-bottom:var(--space-md);
}
.post-card__gallery img{
  width:100%;
  height:auto;
  max-height:480px;
  object-fit:contain;
  display:block;
  border:1px solid var(--color-border);
  border-radius:8px;
  background:#fff;
  transition:transform .3s ease, box-shadow .3s ease;
}
.post-card__gallery img:hover{
  transform:translateY(-3px);
  box-shadow:0 10px 22px rgba(15,34,54,0.14);
}
.post-card__body{
  font-family:"Inter",sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--color-text);
}