:root{
  --bg:#F9FAFB;
  --card:#FFFFFF;
  --muted:#4B5563;
  --text:#111827;
  --border:#E5E7EB;
  --shadow: 0 2px 8px rgba(0,0,0,.08);
  --radius:16px;
  --primary:#1E40AF;
  --navbar:#142C63;
  --hover:#F59E0B;
  --badge-bg:#F3F4F6;
}

html[data-theme="dark"] {
  --bg:#0F172A;
  --card:#1E293B;
  --muted:#CBD5E1;
  --text:#F1F5F9;
  --border:#334155;
  --shadow: 0 12px 30px rgba(0,0,0,.35);
  --radius:16px;
  --primary:#3B82F6;
  --navbar:#0B1E3C;
  --badge-bg:var(--navbar);
  --hover:#FBBF24;
}

*{box-sizing:border-box}
html,body{height:100%}
/* Prevent accidental horizontal scroll from negative margins or wide elements */
html, body { overflow-x: hidden; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: var(--bg);
  color:var(--text);
}

.container{
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 1200px) {
  .container {
    padding: 0 40px;
  }
}

@media (min-width: 1600px) {
  .container {
    padding: 0 60px;
  }
}

#mainContent {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: calc(100vh - 160px);
  width: 100%;
  padding: 0 20px;
}

.site-header{
  position:sticky; top:0; z-index:5;
  background: #1a2f5a;
  backdrop-filter: blur(14px);
  border-bottom:1px solid var(--border);
  width: 100%;
}
.header-inner{
  padding:18px 0;
  display:flex;
  flex-direction:column;
  gap:12px;
  align-items:center;
  justify-content:center;
  text-align:center;
}

.header-nav-row{
  padding: 0 0 14px 0;
}

.category-nav{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  justify-content: center;
}

.category-nav button{
  background: var(--badge-bg);
  border:1px solid var(--border);
  color: var(--text);
  padding:6px 12px;
  border-radius: 999px;
  cursor:pointer;
  font-size:12px;
  line-height: 1.1;
}

.category-nav button:hover{
  border-color: var(--hover);
  color: var(--hover);
}

.category-nav button.active{
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
}

.brand .tagline{color:#FFFFFF; font-size:13px; margin-top:4px;}

/* logo images */
.brand .site-logo, .landing-brand .landing-logo {
  height: 64px; /* bigger so it stands out more */
  max-width: 240px;
  display: block;
  margin: 0 auto 8px auto;
}

/* additional class for explicitly larger header logos if needed */
.brand .site-logo.large {
  height: 96px;
  max-width: 320px;
}

html[data-theme="dark"] .site-header{
  background: var(--navbar);
}

.controls{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  justify-content:center;
  width:100%;
  max-width: 820px;
}

.control{
  display:flex;
  flex-direction:column;
  gap:6px;
  flex: 1;
  min-width: 180px;
}

.label{font-size:12px; color:#FFFFFF; text-transform: uppercase; letter-spacing: 0.5px;}

.theme-toggle{
  border: none;
  background: transparent;
  color: #FFFFFF;
  font-size: 18px;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 8px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 6px;
}

.theme-toggle:hover{
  background: rgba(255,255,255,.15);
}

select,input{
  background: #FFFFFF;
  border:1px solid var(--border);
  color:var(--text);
  padding:10px 12px;
  border-radius:12px;
  outline:none;
  width: 100%;
}


/* Improve native form control rendering in light UI */
select{
  color-scheme: light;
  background-color: #FFFFFF; /* solid fallback for some browsers */
}

select option{
  background: #FFFFFF;
  color: var(--text);
}
select:focus,input:focus{border-color: var(--primary)}

.meta-row{
  display:flex; 
  flex-direction: column;
  align-items:center; 
  justify-content:center;
  padding:16px 0 10px 0;
  width: 100%;
  max-width: 1200px;
}
.results-meta{color:var(--muted); font-size:13px}

.btn{
  border:1px solid var(--primary);
  background: var(--primary);
  color:#FFFFFF;
  padding:10px 12px;
  border-radius:12px;
  cursor:pointer;
  font-size: 14px;
  transition: all 0.2s ease;
}

.btn:hover{
  border-color: var(--hover);
  background: var(--hover);
  color: #FFFFFF;
}

.btn:active {
  transform: scale(0.98);
}

.btn.ghost{
  background:transparent;
  border:1px solid var(--text);
  color: var(--text);
}

.btn.ghost:hover {
  background: rgba(0,0,0,.05);
  border-color: var(--hover);
  color: var(--hover);
}

html:not([data-theme="dark"]) .btn.ghost {
  border-color: rgba(255,255,255,.4);
  color: rgba(255,255,255,.8);
}

html:not([data-theme="dark"]) .btn.ghost:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.8);
  color: #FFFFFF;
}

.icon-btn{
  border:1px solid var(--border);
  background: #FFFFFF;
  color:var(--text);
  width:38px; height:38px;
  border-radius:12px;
  cursor:pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.icon-btn:hover{
  border-color: var(--hover);
  background: #FFFFFF;
  color: var(--hover);
}

.grid{
  display:grid;
  /* slightly smaller min column to improve fit on narrow phones */
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap:16px;
  padding-bottom:40px;
  flex: 1;
  width: 100%;
}

@media (min-width: 1400px) {
  .eu-list {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1200px) and (max-width: 1399px) {
  .eu-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) and (max-width: 1199px) {
  .eu-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px){
  .grid{grid-template-columns: 1fr}
}

.card{
  background: var(--card);
  border:1px solid var(--border);
  border-radius: var(--radius);
  padding:14px;
  box-shadow: var(--shadow);
  overflow: hidden; /* ensure internal negative margins (card-logo) don't create horizontal scroll */
}

/* flip‑card effect for EU alternatives */
.flip-card {
  perspective: 1000px;
}

.flip-card .card-inner {
  position: relative;
  width: 100%;
  /* height determined by the front face content */
  transform-style: preserve-3d;
  transition: transform 0.6s;
}

.flip-card:hover .card-inner,
.flip-card.flipped .card-inner {
  transform: rotateY(180deg);
}

.flip-card .card-front {
  backface-visibility: hidden;
  position: relative; /* stay in flow so it sets height */
  width: 100%;
  display: flex;
  flex-direction: column;
  /* padding comes from .card itself */
}

.flip-card .card-back {
  backface-visibility: hidden;
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  /* padding inherited from .card */
  transform: rotateY(180deg);
}

.flip-card .card-back h4 {
  margin-top: 0;
}

.flip-card .card-back p {
  flex: 1;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.card-logo{
  width: 100%;
  height: 120px;
  object-fit: contain;
  object-position: center;
  background: rgba(0, 0, 0, 0.02);
  border-radius: 8px;
  margin-bottom: 10px;
  margin: -14px -14px 10px -14px;
  border-radius: 13px 13px 0 0;
  padding: 8px;
}
.card-top{display:flex; gap:10px; align-items:flex-start; justify-content:space-between}
.card h3{margin:0; font-size:16px}
.badges{display:flex; gap:6px; flex-wrap:wrap; margin-top:8px}
.badge{
  font-size:12px;
  color: var(--text);
  padding:4px 8px;
  border:1px solid var(--border);
  border-radius: 999px;
  background: var(--badge-bg);
}
.card p{margin:10px 0 0 0; color:var(--muted); font-size:13px; line-height:1.4}
.links{display:flex; gap:10px; flex-wrap:wrap; margin-top:12px}
.a{
  color: var(--primary);
  text-decoration:none;
  border-bottom:1px solid var(--primary);
}
.a:hover{border-bottom-color: var(--hover); color: var(--hover);}
.actions{display:flex; gap:10px; margin-top:12px; align-items:center; flex-wrap:wrap}
.small{font-size:12px;color:var(--muted)}

.empty{
  margin:26px auto 50px auto;
  padding:22px;
  border:1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  background: var(--card);
  max-width: 1200px;
  width: 100%;
}

html[data-theme="dark"] .empty{
  background: var(--card);
  color: var(--text);
}
.hidden{display:none}

/* Category grid: US list and EU list */
.category-grid{
  display:flex;
  flex-direction: column;
  gap:24px;
  align-items: center;
  width: 100%;
}

.us-list{
  display:flex; 
  flex-direction:row;
  flex-wrap:wrap;
  gap:10px;
  justify-content:center;
  width: 100%;
  max-width: 1200px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.us-row{
  border:1px solid var(--border); 
  padding:12px 16px; 
  border-radius:12px; 
  background: var(--card);
  display:flex; 
  flex-direction:column;
  align-items:center; 
  justify-content:center;
  transition: all 0.2s ease;
  cursor: pointer;
  min-width: 160px;
  text-align:center;
}

.us-row:hover {
  background: var(--card);
  border-color: var(--primary);
}

.us-row.selected{
  background: var(--card);
  border-color: var(--primary);
  border-width: 2px;
}

.us-row h4 {
  margin: 0 0 8px 0;
  font-size: 14px;
}

.us-row button {
  white-space: nowrap;
  font-size: 12px;
  padding: 6px 10px;
  width: 100%;
}

@media (max-width: 1100px){ 
  .category-grid{
    gap: 16px;
  }

  .us-list{
    gap: 8px;
  }
}

@media (max-width: 900px){ 
  .category-grid{
    gap: 12px;
  }

  .us-list {
    gap: 8px;
  }
}

/* Drawer */
.drawer{position:fixed; inset:0; display:none; z-index:50}
.drawer.open{display:block}
.drawer-backdrop{
  position:absolute; inset:0;
  background: rgba(0,0,0,.55);
}
.drawer-panel{
  position:absolute; top:0; right:0; height:100%; width:min(720px, 92vw);
  background: var(--bg);
  backdrop-filter: blur(16px);
  border-left:1px solid var(--border);
  box-shadow: var(--shadow);
  display:flex; flex-direction:column;
}
.drawer-header{
  padding:16px;
  border-bottom:1px solid var(--border);
  display:flex; justify-content:space-between; align-items:center;
}
.drawer-title{font-weight:800; font-size:18px}
.drawer-subtitle{color:var(--muted); font-size:12px; margin-top:3px}
.drawer-footer{
  margin-top:auto;
  padding:14px 16px;
  border-top:1px solid var(--border);
  display:flex; gap:10px; justify-content:flex-end;
}

.eu-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  width: 100%;
  max-width: 1200px;
  padding-bottom: 40px;
}

.compare-grid{
  padding:16px;
  display:grid;
  grid-template-columns: 1fr;
  gap:12px;
  overflow:auto;
}
.compare-item{
  border:1px solid var(--border);
  border-radius:14px;
  padding:12px;
  background: var(--card);
}
.compare-item h4{margin:0 0 8px 0}
.kv{display:grid; grid-template-columns: 120px 1fr; gap:8px; font-size:13px; color:var(--muted)}
.kv b{color:var(--text); font-weight:600}

/* Landing mode: truly fullscreen, centered */
body.landing{
  overflow: auto;
}

body.landing #mainHeader,
body.landing #mainContent{
  display: none !important;
}

.landing-wrap{
  position: relative;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}

.landing-card{
  text-align: center;
  width: min(680px, 92vw);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  background: var(--card);
  box-shadow: var(--shadow);
  padding: 28px;
  color: var(--text);
}

.landing-brand{
  font-weight: 900;
  letter-spacing: .2px;
  font-size: 18px;
  margin-bottom: 10px;
}

.landing-title{
  margin: 0 0 14px 0;
  font-size: clamp(28px, 5vw, 44px);
}

#replaceSelectLanding{
  width: 100%;
  font-size: 16px;
  padding: 14px 14px;
  border-radius: 14px;
  margin-top: 6px;
  text-align: left; /* dropdown text left looks nicer */
  background: var(--card);
}

.landing-sub{
  color: var(--muted);
  margin: 12px 0 0 0;
  font-size: 13px;
}

.landing-selects{ display:flex; gap:12px; margin-top:10px; }
.landing-selects select{ flex:1; background: var(--card); }

.meta-actions{
  display:flex; 
  gap:10px; 
  align-items:center;
  justify-content: center;
  margin-top: 12px;
  width: 100%;
  max-width: 1200px;
}


/* Disabled controls (loading state) */
select:disabled, input:disabled{
  opacity: .65;
  cursor: not-allowed;
}

/* Landing error */
.landing-error{
  margin: 12px 0 0 0;
  font-size: 13px;
  color: var(--hover);
}

/* Mobile responsive adjustments */
@media (max-width: 767px){
  .site-header {
    position: relative;
  }

  .header-inner{
    flex-direction:column;
    gap: 16px;
    padding: 12px 0;
  }

  .brand {
    order: 1;
  }

  .controls{
    flex-direction: column;
    justify-content:flex-start;
    order: 2;
    gap: 12px;
  }

  /* Stack US list items vertically on narrow screens to avoid side-scroll */
  .us-list{
    flex-direction:column;
    align-items:stretch;
    padding: 8px 0;
    gap:8px;
  }

  .us-row{
    min-width: 0;
    width: 100%;
    text-align: left;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
  }

  .us-row h4 {
    margin: 0;
    font-size: 14px;
    text-align: left;
  }

  .us-row button {
    white-space: nowrap;
    font-size: 12px;
    padding: 6px 10px;
    width: auto;
  }

  /* Make EU list cards span full width on small screens */
  .eu-list {
    grid-template-columns: 1fr !important;
  }

  .control {
    min-width: 0;
    width: 100%;
  }

  .control:nth-child(2) {
    order: 1;
  }

  .control:nth-child(1) {
    order: 2;
  }

  .control:nth-child(3) {
    order: 3;
  }

  .header-nav-row {
    order: 3;
    padding: 0;
  }

  .category-nav {
    gap: 8px;
    /* allow wrapping so buttons stack on narrow viewports */
    flex-wrap: wrap;
    /* no need for a scrolling container any more */
    overflow-x: visible;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .category-nav button {
    font-size: 11px;
    padding: 5px 10px;
    /* enable shrinking so they can fit on each line if needed */
    flex-shrink: 1;
  }

  #mainContent {
    min-height: auto;
    padding: 0;
  }

  .container {
    padding: 0 16px;
  }

  .meta-row {
    flex-direction: column;
    gap: 12px;
    padding: 12px 0 8px 0;
  }

  .grid {
    gap: 12px;
    padding-bottom: 20px;
  }
}

/* Dark theme specific overrides */
html[data-theme="dark"] .category-nav button{
  background: rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  color: var(--muted);
}

html[data-theme="dark"] .category-nav button:hover{
  border-color: var(--hover);
  color: var(--text);
}

html[data-theme="dark"] .category-nav button.active{
  background: rgba(59,130,246,.2);
  color: var(--text);
  border-color: rgba(59,130,246,.4);
}

html[data-theme="dark"] select,
html[data-theme="dark"] input{
  background: rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  color: var(--text);
}

html[data-theme="dark"] select{
  color-scheme: dark;
  background-color: var(--card);
}

html[data-theme="dark"] select option{
  background: var(--card);
  color: var(--text);
}

html[data-theme="dark"] .btn{
  border:1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.12);
  color:var(--text);
}

html[data-theme="dark"] .btn:hover{
  border-color: rgba(255,255,255,.3);
  background: rgba(255,255,255,.18);
}

html[data-theme="dark"] .btn.ghost{
  background:transparent;
  border:1px solid var(--text);
  color: var(--text);
}

html[data-theme="dark"] .btn.ghost:hover {
  background: rgba(255,255,255,.06);
  border-color: var(--hover);
  color: var(--hover);
}

html[data-theme="dark"] .icon-btn{
  border:1px solid var(--border);
  background: rgba(255,255,255,.06);
  color: var(--text);
}

html[data-theme="dark"] .icon-btn:hover{
  border-color: rgba(255,255,255,.28);
  background: rgba(255,255,255,.12);
}

html[data-theme="dark"] .badge{
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.2);
}

html[data-theme="dark"] .us-row{
  background: rgba(255,255,255,.08);
}

html[data-theme="dark"] .us-row:hover {
  background: rgba(255,255,255,.1);
  border-color: var(--primary);
}

html[data-theme="dark"] .us-row.selected{
  background: rgba(59,130,246,.15);
  border-color: var(--primary);
}

html[data-theme="dark"] .drawer-backdrop{
  background: rgba(0,0,0,.55);
}

html[data-theme="dark"] .drawer-panel{
  background: var(--bg);
}

html[data-theme="dark"] .compare-item{
  background: rgba(255,255,255,.05);
}

html[data-theme="dark"] .a{
  color: var(--text);
  border-bottom-color: var(--primary);
}

html[data-theme="dark"] .a:hover{
  border-bottom-color: var(--hover);
  color: var(--hover);
}