:root{
  --navy: #001b5c;
  --navy-deep: #00123f;
  --navy-darker: #000a26;
  --red: #c8102e;
  --red-bright: #e41b3c;
  --gold: #d4a73a;
  --gold-bright: #e6c057;
  --white: #ffffff;
  --off-white: #f6f7fb;
  --gray: #6b7280;
  --gray-dark: #3f4655;
  --border: #e5e7eb;

  /* Legacy aliases used by existing components (kept so JS-injected markup stays styled). */
  --cfd-blue: var(--navy);
  --cfd-red:  var(--red);
  --bg: var(--white);
  --card-bg: var(--off-white);
  --accent: var(--gold);
  --text: var(--gray-dark);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Montserrat', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  background:var(--white);
  color:var(--gray-dark);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.55;
  min-height:100vh;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
button{font-family:inherit; cursor:pointer;}
.serif{font-family:'Playfair Display', Georgia, serif;}

.container{max-width:1240px; margin:0 auto; padding:0 28px;}

/* ---------- Top announcement bar ---------- */
.top-bar{
  background:var(--navy);
  color:#fff;
  font-size:13px;
  letter-spacing:.04em;
}
.top-bar-inner{
  display:flex;
  align-items:center;
  justify-content:center;
  height:38px;
}
.top-bar-message{
  display:inline-flex;
  align-items:center;
  gap:14px;
  font-weight:500;
  text-align:center;
}
.top-bar-message .star{ color:var(--gold-bright); }

/* ---------- Header ---------- */
.site-header{
  background:#fff;
  border-bottom:1px solid var(--border);
  position:-webkit-sticky;
  position:sticky;
  top:0;
  z-index:50;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:24px;
  padding:6px 28px;
}
.brand-stack{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:2px;
  text-align:center;
}
.brand-logo{ height:84px; width:auto; }

.brand-title-eyebrow{
  font-size:12px;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--gold);
  font-weight:700;
}

/* ---------- Hero ---------- */
.home-hero{ padding:0; }
.hero-content{
  text-align:center;
  padding:24px 24px 28px;
  position:relative;
  background:
    radial-gradient(ellipse 60% 60% at 50% 50%, rgba(255,255,255,1) 0%, rgba(246,247,251,.85) 60%, rgba(246,247,251,0) 100%),
    linear-gradient(180deg, #f6f7fb 0%, #ffffff 100%);
}
.hero-booklens-logo{
  display:block;
  margin:0 auto;
  max-width:240px;
  max-width:min(240px, 50%);
  width:100%;
  height:auto;
}
.gold-divider{
  display:flex; align-items:center; justify-content:center;
  gap:14px;
  margin:8px auto 10px;
}
.gold-divider::before, .gold-divider::after{
  content:'';
  width:90px; height:2px;
  background:linear-gradient(90deg, transparent, var(--gold) 40%, var(--gold) 60%, transparent);
}
.gold-divider .star{ color:var(--gold); font-size:18px; }

.hero-mission{
  color:#4a4f5b;
  max-width:720px;
  margin:0 auto 18px;
  font-size:17px;
  line-height:1.65;
}
.hero-ctas{
  display:flex; gap:14px; justify-content:center; flex-wrap:wrap;
}

.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:14px 26px;
  font-weight:700;
  font-size:13px;
  letter-spacing:.14em;
  text-transform:uppercase;
  border-radius:4px;
  border:0;
  cursor:pointer;
  transition:transform .15s, background .2s, color .2s, border-color .2s;
}
.btn:hover{ transform:translateY(-2px); }
.btn-navy{ background:var(--navy); color:#fff; }
.btn-navy:hover{ background:var(--navy-deep); }
.btn-red{ background:var(--red); color:#fff; }
.btn-red:hover{ background:var(--red-bright); }
.btn-outline-gold{
  background:#fff;
  color:var(--gold);
  border:2px solid var(--gold);
}
.btn-outline-gold:hover{ background:var(--gold); color:#fff; }

/* ---------- Values bar ---------- */
.values-bar{
  background:#fff;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  margin-top:24px;
  padding:18px 28px;
}
.values-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:14px 20px;
  text-align:center;
}
.value-item{
  color:var(--navy);
  font-weight:700;
  font-size:18px;
  letter-spacing:.02em;
}
.value-star{
  color:var(--gold);
  font-size:18px;
  line-height:1;
}

/* ---------- Install section ---------- */
.install-section{ padding:28px 28px 0; }
.install-card{
  background:linear-gradient(180deg, #fff 0%, #f6f7fb 100%);
  border:1px solid var(--border);
  border-left:4px solid var(--navy);
  border-radius:6px;
  padding:18px 24px;
  max-width:640px;
  margin:0 auto;
  box-shadow:0 4px 16px rgba(0,27,92,.05);
}
.install-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.install-text{ flex:1; min-width:0; }
.install-card h3{
  color:var(--navy);
  font-size:18px;
  font-weight:700;
  margin:0 0 2px;
}
.install-copy{
  color:var(--gray-dark);
  margin:0;
  font-size:13px;
}
.install-btn{
  font-size:13px;
  padding:10px 22px;
  letter-spacing:.06em;
  white-space:nowrap;
  flex-shrink:0;
}
.install-steps{
  margin:8px 0 4px;
  padding-left:20px;
  font-size:13px;
  color:var(--gray-dark);
  line-height:1.7;
}
.install-steps strong{ color:var(--navy); }
.install-url-hint{
  margin-top:6px;
  font-style:italic;
  font-size:12px;
  color:var(--gray);
}
.inline-icon{
  vertical-align:-2px;
  display:inline;
}
.install-icon-hint{
  font-size:15px;
  color:var(--navy);
}
.install-steps-split li{
  margin-bottom:6px;
}

/* ---------- Install modal ---------- */
.install-modal-overlay{
  position:fixed; inset:0; z-index:9000;
  background:rgba(0,11,46,.55);
  display:flex; align-items:center; justify-content:center;
  padding:20px;
  animation:fadeIn .2s ease;
}
@keyframes fadeIn{ from{opacity:0} to{opacity:1} }
.install-modal{
  position:relative;
  background:linear-gradient(180deg, #fff 0%, #f6f7fb 100%);
  border:1px solid var(--border);
  border-left:4px solid var(--navy);
  border-radius:10px;
  padding:28px 28px 24px;
  max-width:520px;
  width:100%;
  box-shadow:0 16px 48px rgba(0,27,92,.18);
}
.install-modal-close{
  position:absolute; top:10px; right:14px;
  background:none; border:none; font-size:26px; line-height:1;
  color:var(--gray); cursor:pointer; padding:4px 8px;
}
.install-modal-close:hover{ color:var(--navy); }
.install-modal h3{
  color:var(--navy);
  font-size:20px;
  font-weight:700;
  margin:0 0 8px;
}
.install-modal .install-copy{
  color:var(--gray-dark);
  margin:0 0 4px;
  font-size:14px;
}
.install-modal .install-steps{
  margin:10px 0 4px;
  padding-left:22px;
  font-size:14px;
  color:var(--gray-dark);
  line-height:1.8;
}
.install-modal .install-steps strong{ color:var(--navy); }
.install-modal .install-url-hint{
  margin-top:8px;
  font-style:italic;
  font-size:12px;
  color:var(--gray);
}

/* ---------- Donate section ---------- */
.donate-section{ padding:64px 28px 32px; }
.donate-card{
  background:linear-gradient(180deg, #fff 0%, #f6f7fb 100%);
  border:1px solid var(--border);
  border-top:4px solid var(--gold);
  border-radius:6px;
  padding:36px 28px;
  text-align:center;
  max-width:640px;
  margin:0 auto;
  box-shadow:0 10px 30px rgba(0,27,92,.06);
}
.donate-card .eyebrow{
  font-size:11px;
  letter-spacing:.28em;
  color:var(--red);
  font-weight:700;
  margin:0 0 6px;
}
.donate-card h3{
  color:var(--navy);
  font-size:28px;
  font-weight:800;
  margin:0 0 10px;
}
.donate-copy{
  color:var(--gray-dark);
  margin:0 auto 20px;
  max-width:460px;
}
.paypal-host{ max-width:300px; margin:0 auto; }

/* ---------- Mode navigation ---------- */
.mode-nav{
  display:flex; flex-direction:column; gap:10px; margin:32px 0 16px;
  justify-content:center; align-items:center; flex-wrap:wrap;
}
.mode-nav-label{
  margin:0;
  color:var(--navy);
  font-weight:700;
  font-size:13px;
  letter-spacing:.18em;
  text-transform:uppercase;
}
.mode-btn{
  display:inline-block; text-decoration:none;
  padding:11px 18px; border-radius:999px; border:1.5px solid var(--navy);
  background:#fff; color:var(--navy);
  font-weight:700; font-size:12.5px; letter-spacing:.1em; text-transform:uppercase;
  cursor:pointer;
  transition:background .2s, color .2s, transform .15s;
}
.mode-btn:hover{ background:var(--off-white); transform:translateY(-1px); }
.mode-btn.active{
  background:var(--navy); color:#fff;
  box-shadow:0 6px 18px rgba(0,27,92,.18);
}

/* ---------- Screens ---------- */
.screen{ padding:12px 0 32px; }
.hidden{ display:none; }

/* ---------- Scanner shared ---------- */
.scanner-controls{ display:flex; gap:8px; align-items:center; justify-content:center; margin-bottom:12px; flex-wrap:wrap; }
.scanner-controls button, .cover-controls-bar button{
  padding:9px 16px; border-radius:4px; border:0;
  background:var(--navy); color:#fff;
  font-weight:700; font-size:12.5px; letter-spacing:.1em; text-transform:uppercase;
  cursor:pointer;
  transition:background .2s;
}
.scanner-controls button:hover, .cover-controls-bar button:hover{ background:var(--navy-deep); }
.scanner-controls label, .cover-controls-bar label{ font-weight:600; font-size:13px; color:var(--navy); }
.scanner-controls select, .cover-controls-bar select{ padding:7px 9px; border-radius:4px; border:1px solid #ccc; }

.scanner-view{ position:relative; max-width:720px; margin:0 auto; border-radius:8px; overflow:hidden; background:#000; min-height:60vh; }
.scanner-view video{ width:100%; height:100%; display:block; object-fit:cover; position:absolute; top:0; left:0; }

.scan-box{
  position:absolute; border:3px solid rgba(212,167,58,.75); width:80%; height:60%; top:20%; left:10%;
  border-radius:6px; pointer-events:none; z-index:5;
  box-shadow:0 0 0 9999px rgba(0,0,0,.35);
}
#cover-scan-box{ width:60%; height:80%; top:10%; left:20%; }
#isbn-scan-box{ width:80%; height:30%; top:35%; left:10%; }

.isbn-viewport{
  position:relative; max-width:720px; margin:0 auto;
  border-radius:8px; overflow:hidden; background:#000;
  /* Fallback for browsers without aspect-ratio support */
  height:0; padding-bottom:56.25%;
}
@supports (aspect-ratio:1){
  .isbn-viewport{
    height:auto; padding-bottom:0;
    aspect-ratio:16/9;
  }
}
.isbn-viewport .scanner-view{
  position:absolute; top:0; left:0; width:100%; height:100%;
  min-height:0; max-width:none; margin:0; border-radius:0;
}

.cover-viewport{
  position:relative; max-width:480px; margin:0 auto;
  min-height:70vh;
  border-radius:8px; overflow:hidden; background:#000;
}
@supports (aspect-ratio:1){
  .cover-viewport{
    aspect-ratio:3/4;
  }
}
.cover-viewport .scanner-view{
  position:absolute; top:0; left:0; width:100%; height:100%;
  min-height:0; max-width:none; margin:0; border-radius:0;
}

.cover-controls-bar{
  display:flex; gap:8px; align-items:center; justify-content:center;
  margin-bottom:12px; flex-wrap:wrap;
}

.capture-btn{
  position:absolute; bottom:20px; left:50%;
  transform:translateX(-50%);
  width:64px; height:64px; border-radius:50%;
  border:4px solid #fff; background:var(--red);
  cursor:pointer; z-index:10;
  box-shadow:0 4px 12px rgba(0,0,0,.3);
  transition:transform .1s ease;
}
.capture-btn:active{ transform:translateX(-50%) scale(.92); }

.torch-btn{
  position:absolute; top:12px; right:12px;
  width:40px; height:40px; border-radius:50%;
  border:0; background:rgba(0,0,0,.5); color:#fff;
  cursor:pointer; z-index:10;
  display:flex; align-items:center; justify-content:center;
  padding:0;
}
.torch-btn:active{ background:rgba(255,255,255,.3); }

.result{
  margin-top:14px; font-size:16px; background:#fff;
  padding:18px; border-radius:6px;
  border:1px solid var(--border);
  border-left:4px solid var(--gold);
  box-shadow:0 6px 18px rgba(0,27,92,.06);
  max-width:100%;
  overflow-wrap:break-word;
  word-wrap:break-word;
}

.content-breakdown{
  margin:8px 0 0;
  padding:0;
  background:transparent;
  border:0;
  font-family:inherit;
  font-size:15px;
  line-height:1.55;
  color:inherit;
  white-space:pre-wrap;
  word-break:break-word;
  overflow-wrap:break-word;
  overflow-wrap:anywhere;
  max-width:100%;
}

@media (max-width:480px){
  .content-breakdown{ font-size:14px; line-height:1.5; }
  .result{ padding:14px; font-size:15px; }
}

.manual-card{
  max-width:640px; margin:0 auto;
  background:#fff; padding:24px; border-radius:6px;
  border:1px solid var(--border);
  border-top:4px solid var(--navy);
  box-shadow:0 6px 18px rgba(0,27,92,.06);
}
.manual-card label{ display:block; margin:10px 0; font-weight:600; color:var(--navy); font-size:13px; letter-spacing:.04em; }
.manual-card input{
  width:100%; padding:10px 12px; margin-top:6px;
  border-radius:4px; border:1px solid #d6d8de;
  font-family:inherit; font-size:15px;
}
.manual-card input:focus{ outline:none; border-color:var(--navy); box-shadow:0 0 0 3px rgba(0,27,92,.12); }

.manual-actions{ margin-top:14px; }
.manual-actions button{
  padding:12px 22px; border-radius:4px; border:0;
  background:var(--red); color:#fff;
  font-weight:700; font-size:12.5px; letter-spacing:.14em; text-transform:uppercase;
  cursor:pointer; transition:background .2s;
}
.manual-actions button:hover{ background:var(--red-bright); }

.book{ display:flex; gap:14px; align-items:flex-start; }
.book img{ width:120px; border-radius:4px; }
.book h3{ margin:0 0 6px; color:var(--navy); }

.back-actions{ margin-top:14px; }
.back-actions button{
  padding:9px 16px; border-radius:4px; border:0;
  background:var(--navy); color:#fff;
  font-weight:700; font-size:12.5px; letter-spacing:.1em; text-transform:uppercase;
  cursor:pointer;
}
.back-actions button:hover{ background:var(--navy-deep); }

/* ---------- Footer ---------- */
.site-footer{
  background:var(--navy-darker);
  color:#c8cbd6;
  margin-top:48px;
}
.footer-inner{
  padding:36px 28px;
  text-align:center;
}
.footer-tagline{
  color:#fff;
  font-size:20px;
  font-weight:700;
  letter-spacing:.04em;
  margin:0 0 6px;
}
.footer-small{
  margin:0;
  font-size:13px;
  letter-spacing:.04em;
}

/* ---------- OCR debug image preview ---------- */
.ocr-debug-details{
  margin-top:12px;
  background:#fff;
  border-radius:6px;
  padding:8px 12px;
  border:1px solid var(--border);
}
.ocr-debug-details summary{
  cursor:pointer;
  font-weight:700;
  color:var(--navy);
  padding:4px 0;
}
.ocr-debug-hint{ margin:4px 0 8px; font-size:13px; color:var(--gray); }
.ocr-debug-img{
  display:block; max-width:100%; border-radius:4px;
  border:1px solid #ddd; margin:0 auto;
}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .value-item{ font-size:16px; }
}
@media (max-width:680px){
  .header-inner{ flex-direction:column; align-items:center; gap:6px; padding:6px 20px; }
  .brand-logo{ height:64px; }
  .hero-content{ padding:18px 20px 22px; }
  .hero-booklens-logo{ max-width:min(180px, 50%); }
}
@media (max-width:520px){
  .container{ padding:0 18px; }
  .hero-ctas .btn{ padding:12px 18px; font-size:12px; }
  .values-line{ flex-direction:column; gap:10px; }
  .value-item{ font-size:15px; }
}
@media (max-width:420px){
  .scan-box{ height:55%; top:22%; }
  #cover-scan-box{ width:55%; height:75%; top:12%; left:22.5%; }
  #isbn-scan-box{ width:85%; height:25%; top:37.5%; left:7.5%; }
  .scanner-view{ min-height:65vh; }
  .cover-viewport{ min-height:65vh; }
  .book img{ width:100px; }
}