/* FIUC theme (section 3.2) - typography, palette, gentle UI polish */

:root {
  --fiuc-primary: #0d6efd;
  --fiuc-accent: #198754;
  --fiuc-warning: #ffd000; /* brighter yellow for active underline */
  --fiuc-text: #212529;
  --fiuc-bg: #f8f9fa;
  --fiuc-gradient-left: #0ea5e9; /* cyan */
  --fiuc-gradient-right: #22c55e; /* green */
  --fiuc-gradient-accent: #a78bfa; /* violet */
}

html, body {
  font-family: "Palatino Linotype", Palatino, "URW Palladio L", serif;
  color: var(--fiuc-text);
  background-color: var(--fiuc-bg);
  min-height: 100vh;
}

/* App background similar to provided image */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(120deg, rgba(255,255,255,1) 0%, rgba(255,255,255,0.96) 20%, rgba(255,255,255,0.92) 40%),
              linear-gradient(135deg, var(--fiuc-gradient-left), transparent 60%),
              linear-gradient(225deg, var(--fiuc-gradient-right), transparent 60%),
              linear-gradient(200deg, var(--fiuc-gradient-accent), transparent 65%);
  z-index: -1;
}

.navbar {
  background-color: #0b2239 !important; /* FIUC dark header tone */
}

/* Active nav item yellow underline akin to design */
.navbar .nav-link {
  position: relative;
}
.navbar .nav-link.active,
.navbar .nav-link:focus,
.navbar .nav-link:hover {
  color: #fff;
}
.navbar .nav-link.active .nav-text::after,
.navbar .nav-link.dropdown-toggle.active .nav-text::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 4px;
  background: var(--fiuc-warning);
}

.navbar .nav-link .nav-text {
  position: relative;
  display: inline-block;
}

.btn-primary { background-color: var(--fiuc-primary); border-color: var(--fiuc-primary); }
.btn-success { background-color: var(--fiuc-accent); border-color: var(--fiuc-accent); }
.btn-warning { background-color: var(--fiuc-warning); border-color: var(--fiuc-warning); color: #212529; }

/* Cards with colored top border accents */
.card {
  border-radius: 0.5rem;
  border: 1px solid rgba(0,0,0,0.06);
  box-shadow: 0 6px 18px rgba(0,0,0,0.06);
  overflow: hidden;
}
.card-header {
  border-radius: 0.5rem 0.5rem 0 0;
  margin: 0;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  border: none;
}
.card.bg-primary .card-header {
  background: linear-gradient(90deg, var(--bs-primary) 0%, #6fb3ff 100%);
  color: #fff;
}
.card.bg-success .card-header {
  background: linear-gradient(90deg, var(--bs-success) 0%, #7be495 100%);
  color: #fff;
}
.card.bg-info .card-header {
  background: linear-gradient(90deg, var(--bs-info) 0%, #a1eafb 100%);
  color: #fff;
}
.card.bg-warning .card-header {
  background: linear-gradient(90deg, var(--bs-warning) 0%, #fff3cd 100%);
  color: #212529;
}
.card.bg-danger .card-header {
  background: linear-gradient(90deg, var(--bs-danger) 0%, #ffb3b3 100%);
  color: #fff;
}
.card:not(.bg-primary):not(.bg-success):not(.bg-info):not(.bg-warning):not(.bg-danger) .card-header {
  background: linear-gradient(90deg, var(--fiuc-bg) 0%, var(--fiuc-gradient-left) 100%);
  color: var(--fiuc-text);
}

h1, h2, h3, .navbar-brand { letter-spacing: 0.2px; }

/* Container spacing to breathe */
.container, .container-fluid { padding-top: 1rem; padding-bottom: 2rem; }

/* Fingerprint registration preview — same footprint as SecuGen scan (max 105×140) */
.fingerprint-preview-wrap {
  display: inline-block;
  line-height: 0;
}

.fingerprint-preview-box {
  position: relative;
  width: 105px;
  height: 140px;
  border: 1px solid #ced4da;
  border-radius: 4px;
  background: #fff;
  overflow: hidden;
}

.fingerprint-preview-placeholder,
.fingerprint-preview-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 105px;
  height: 140px;
}

.fingerprint-preview-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #adb5bd;
  background: #f8f9fa;
  user-select: none;
}

.fingerprint-preview-placeholder svg {
  width: 28px;
  height: 28px;
  opacity: 0.5;
}

.fingerprint-preview-image {
  object-fit: contain;
  background: #fff;
}

.fingerprint-preview-image[hidden] {
  display: none;
}