/**
 * Book Information System — global theme & motion
 * Safe to load from layout fragment (body); pairs with ui-animations.js
 */

@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..800;1,9..144,300..800&family=Manrope:ital,wght@0,300..800;1,300..800&display=swap");

html {
  margin: 0;
  padding: 0;
  width: 100%;
  max-width: 100%;
}

:root {
  /* Typography */
  --app-font: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --app-display: "Fraunces", Georgia, "Times New Roman", serif;
  --app-text: #f1f5f9;
  --app-text-muted: #94a3b8;
  --app-text-subtle: #64748b;

  /* Ink & aurora — editorial dark shell */
  --app-bg-0: #06080f;
  --app-bg-1: #0c1220;
  --app-bg-2: #141c2f;
  --app-surface: rgba(255, 255, 255, 0.045);
  --app-surface-2: rgba(255, 255, 255, 0.09);
  --app-border: rgba(255, 255, 255, 0.1);
  --app-line-bright: rgba(255, 255, 255, 0.14);

  /* Accents */
  --app-accent: #5eead4;
  --app-accent-dim: rgba(94, 234, 212, 0.14);
  --app-accent-2: #c4b5fd;
  --app-accent-2-dim: rgba(196, 181, 253, 0.12);
  --app-success: #4ade80;
  --app-warning: #fde68a;
  --app-danger: #fb7185;

  /* Light dashboards (shared canvas) */
  --app-canvas: #f0f4f8;
  --app-canvas-2: #e8eef5;
  --app-ink: #0f172a;
  --app-ink-muted: #475569;

  /* Shape & elevation */
  --app-radius: 1rem;
  --app-radius-sm: 0.65rem;
  --app-radius-lg: 1.5rem;
  --app-radius-pill: 999px;
  --app-shadow: 0 24px 60px rgba(0, 0, 0, 0.48);
  --app-shadow-soft: 0 18px 48px rgba(15, 23, 42, 0.09);
  --app-shadow-card: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 12px 28px -8px rgba(15, 23, 42, 0.1);
  --app-glow: 0 0 60px rgba(94, 234, 212, 0.12);
  --app-ring: 0 0 0 3px var(--app-accent-dim);

  --app-ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --app-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ---------- Base (logged-in shell; works with light dashboards) ---------- */
body.app-body {
  margin: 0;
  font-family: var(--app-font);
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: 4.5rem;
  min-height: 100vh;
  width: 100%;
  max-width: 100%;
  overflow-x: clip;
}

/* Shared light canvas for dashboard shells (immersive pages override) */
body.app-body.bis-dashboard-shell:not(.app-immersive) {
  color: var(--app-ink);
  background-color: var(--app-canvas);
  background-image:
    radial-gradient(ellipse 100% 80% at 100% -20%, rgba(99, 102, 241, 0.07), transparent 55%),
    radial-gradient(ellipse 90% 70% at 0% 110%, rgba(94, 234, 212, 0.06), transparent 50%),
    linear-gradient(180deg, var(--app-canvas) 0%, var(--app-canvas-2) 100%);
  background-attachment: fixed;
}

body.app-body ::selection {
  background: var(--app-accent-dim);
  color: var(--app-ink);
}

body.app-body.app-immersive ::selection {
  color: var(--app-text);
}

body.app-body :focus-visible {
  outline: 2px solid var(--app-accent);
  outline-offset: 2px;
}

body.app-body .form-control:focus-visible,
body.app-body .form-select:focus-visible,
body.app-body textarea:focus-visible {
  outline: none;
}

body.app-body .btn:focus-visible,
body.app-body .nav-link:focus-visible {
  outline-offset: 3px;
}

/* Optional immersive dark shell for select pages */
body.app-body.app-immersive {
  color: var(--app-text);
  background-color: var(--app-bg-0);
  background-image:
    radial-gradient(ellipse 115% 75% at 0% -15%, rgba(94, 234, 212, 0.18), transparent 52%),
    radial-gradient(ellipse 85% 65% at 100% 5%, rgba(196, 181, 253, 0.14), transparent 48%),
    radial-gradient(ellipse 55% 45% at 50% 100%, rgba(74, 222, 128, 0.06), transparent 42%),
    linear-gradient(168deg, var(--app-bg-0) 0%, var(--app-bg-1) 42%, var(--app-bg-2) 100%);
  background-attachment: fixed;
}

body.app-body.app-immersive::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cpath fill='%23ffffff' fill-opacity='0.03' d='M0 0h40v40H0zm80 0h40v40h-40zm80 0v40h-40V0zM40 80v40H0V80zm40 0h40v40H80zm40 0h40v40h-40zM0 120h40v40H0zm80 0h40v40H80z'/%3E%3C/svg%3E");
  opacity: 0.9;
  z-index: 0;
}

body.app-body.app-immersive > *:not(.app-navbar) {
  position: relative;
  z-index: 1;
}

/* ---------- Navbar (must stay fixed — do not set position: relative here) ---------- */
.app-navbar.navbar.fixed-top {
  position: fixed !important;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  max-width: 100%;
  margin: 0;
  z-index: 1030;
}

.app-navbar {
  background: rgba(8, 10, 18, 0.82) !important;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--app-border);
  box-shadow:
    0 1px 0 var(--app-line-bright) inset,
    0 8px 32px rgba(0, 0, 0, 0.32);
  padding-top: 0.4rem;
  padding-bottom: 0.4rem;
  transition: padding 0.35s var(--app-ease-out), background 0.35s ease, box-shadow 0.35s ease;
}

.app-navbar.is-scrolled {
  padding-top: 0.22rem;
  padding-bottom: 0.22rem;
  background: rgba(8, 10, 20, 0.9) !important;
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.45);
}

.app-navbar .navbar-brand {
  font-family: var(--app-display);
  font-size: 1.32rem;
  font-weight: 500;
  font-variation-settings: "SOFT" 50, "WONK" 0.35;
  letter-spacing: 0.01em;
  background: linear-gradient(118deg, #fff 0%, #ccfbf1 38%, #ddd6fe 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: transform 0.4s var(--app-ease-spring);
}

.app-navbar .navbar-brand:hover {
  transform: translateY(-1px);
}

/* Subtle animated edge on navbar (signature look) */
.app-navbar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(94, 234, 212, 0.5), rgba(196, 181, 253, 0.5), transparent);
  background-size: 200% 100%;
  animation: app-shimmer 8s linear infinite;
  opacity: 0.85;
  pointer-events: none;
}

.app-navbar .nav-link {
  color: var(--app-text-muted) !important;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 0.85rem !important;
  border-radius: var(--app-radius-pill);
  position: relative;
  transition: color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.app-navbar .nav-link::after {
  content: "";
  position: absolute;
  left: 0.65rem;
  right: 0.65rem;
  bottom: 0.2rem;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--app-accent), var(--app-accent-2));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.35s var(--app-ease-out);
}

.app-navbar .nav-link:hover {
  color: #fff !important;
  background: rgba(255, 255, 255, 0.07);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06) inset;
}

.app-navbar .nav-link:hover::after {
  transform: scaleX(1);
}

.app-navbar .navbar-text,
.app-navbar .text-light {
  color: var(--app-text) !important;
}

.app-navbar .text-muted {
  color: var(--app-text-muted) !important;
}

.app-navbar .btn-logout {
  border: 1px solid var(--app-border);
  color: var(--app-text);
  background: rgba(255, 255, 255, 0.05);
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  transition: transform 0.25s var(--app-ease-spring), box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.app-navbar .btn-logout:hover {
  background: rgba(251, 113, 133, 0.15);
  border-color: rgba(251, 113, 133, 0.45);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(251, 113, 133, 0.2);
}

.app-navbar .navbar-toggler {
  border-color: var(--app-border);
}

/* ---------- Immersive page surfaces ---------- */
body.app-body.app-immersive .card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius-lg);
  box-shadow: var(--app-shadow);
  color: var(--app-text);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.45s var(--app-ease-out), box-shadow 0.45s ease, border-color 0.35s ease;
}

body.app-body.app-immersive .card:hover {
  border-color: rgba(94, 234, 212, 0.35);
  box-shadow: var(--app-shadow), var(--app-glow);
}

body.app-body.app-immersive .card-header {
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--app-border);
  color: var(--app-text);
  border-radius: var(--app-radius-lg) var(--app-radius-lg) 0 0 !important;
}

body.app-body.app-immersive .text-muted {
  color: var(--app-text-muted) !important;
}

body.app-body.app-immersive .form-control,
body.app-body.app-immersive .form-select {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--app-border);
  color: var(--app-text);
  border-radius: 0.65rem;
}

body.app-body.app-immersive .form-control:focus,
body.app-body.app-immersive .form-select:focus {
  background: rgba(0, 0, 0, 0.35);
  border-color: rgba(94, 234, 212, 0.5);
  color: #fff;
  box-shadow: var(--app-ring);
}

/* ---------- Polished defaults on any background ---------- */
body.app-body .card {
  border-radius: var(--app-radius);
  transition: transform 0.4s var(--app-ease-out), box-shadow 0.4s ease;
}

body.app-body .card:hover {
  transform: translateY(-3px);
  box-shadow: var(--app-shadow-card);
  border-color: rgba(15, 23, 42, 0.08);
}

body.app-body.bis-dashboard-shell:not(.app-immersive) .table {
  --bs-table-bg: transparent;
}

body.app-body.bis-dashboard-shell:not(.app-immersive) .table thead th {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--app-ink-muted);
  border-bottom-width: 1px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 250, 252, 0.6));
}

body.app-body .btn-primary {
  border-radius: 0.65rem;
  font-weight: 600;
  transition: transform 0.25s var(--app-ease-spring), box-shadow 0.25s ease;
}

body.app-body .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(20, 184, 166, 0.28), 0 0 0 1px rgba(255, 255, 255, 0.12) inset;
}

/* ---------- Sophisticated pro polish (global) ---------- */
body.app-body.bis-dashboard-shell .glass-card,
body.app-body.bis-dashboard-shell .card {
  border: 1px solid rgba(148, 163, 184, 0.18);
  box-shadow: var(--app-shadow-card);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.92));
}

body.app-body.bis-dashboard-shell .card-header-gradient {
  position: relative;
  border-bottom: 0;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

body.app-body.bis-dashboard-shell .card-header-gradient::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.42), transparent);
}

body.app-body.bis-dashboard-shell .table {
  border-collapse: separate;
  border-spacing: 0;
}

body.app-body.bis-dashboard-shell .table tbody td {
  border-color: rgba(148, 163, 184, 0.16);
  vertical-align: middle;
}

body.app-body.bis-dashboard-shell .table tbody tr {
  transition: background-color 0.24s ease, transform 0.24s ease;
}

body.app-body.bis-dashboard-shell .table-hover > tbody > tr:hover {
  background-color: rgba(14, 165, 233, 0.05);
}

body.app-body.bis-dashboard-shell .table tbody tr:hover td:first-child {
  box-shadow: inset 3px 0 0 rgba(99, 102, 241, 0.5);
}

body.app-body .form-label {
  font-weight: 700;
  color: #1e293b;
  letter-spacing: 0.01em;
}

body.app-body .form-control,
body.app-body .form-select {
  border: 1px solid rgba(148, 163, 184, 0.32);
  border-radius: 0.75rem;
  min-height: 2.6rem;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.72) inset;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.18s ease;
}

body.app-body .form-control:hover,
body.app-body .form-select:hover {
  border-color: rgba(99, 102, 241, 0.46);
}

body.app-body .form-control:focus,
body.app-body .form-select:focus {
  border-color: rgba(99, 102, 241, 0.55);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

body.app-body .btn {
  border-radius: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

body.app-body .btn-outline-secondary,
body.app-body .btn-outline-primary,
body.app-body .btn-outline-warning {
  border-width: 1.2px;
}

body.app-body .badge {
  font-weight: 700;
  letter-spacing: 0.02em;
}

body.app-body .modal-content {
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 1rem;
  box-shadow: 0 24px 58px rgba(2, 6, 23, 0.2);
}

body.app-body .modal-header {
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.95), rgba(241, 245, 249, 0.82));
}

body.app-body .modal-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.18);
}

body.app-body .breadcrumb .breadcrumb-item + .breadcrumb-item::before {
  color: rgba(100, 116, 139, 0.72);
}

body.app-body .pagination .page-link {
  border-radius: 0.65rem;
  margin: 0 0.14rem;
  border-color: rgba(148, 163, 184, 0.25);
}

/* ---------- Micro UX refinement ---------- */
body.app-body.bis-dashboard-shell .card-header-gradient p.opacity-75,
body.app-body.bis-dashboard-shell .card-header p.opacity-75 {
  font-size: 0.92rem;
  letter-spacing: 0.01em;
}

body.app-body.bis-dashboard-shell .btn i.bi,
body.app-body.bis-dashboard-shell .btn i.fas {
  opacity: 0.92;
}

.bis-empty-state {
  padding: 3rem 1.25rem !important;
  border: 1px dashed rgba(148, 163, 184, 0.3);
  border-radius: 0.9rem;
  margin: 1rem;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.7), rgba(241, 245, 249, 0.45));
}

.bis-empty-state h4,
.bis-empty-state h5 {
  letter-spacing: -0.015em;
}

.bis-empty-state p {
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Scroll reveal ---------- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px) scale(0.98);
  filter: blur(4px);
  transition:
    opacity 0.7s var(--app-ease-out),
    transform 0.7s var(--app-ease-out),
    filter 0.6s ease;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: none;
}

.reveal-stagger > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger > *:nth-child(3) { transition-delay: 0.15s; }
.reveal-stagger > *:nth-child(4) { transition-delay: 0.2s; }
.reveal-stagger > *:nth-child(5) { transition-delay: 0.25s; }
.reveal-stagger > *:nth-child(6) { transition-delay: 0.3s; }

/* ---------- Micro-interactions ---------- */
@keyframes app-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.app-shimmer-btn {
  position: relative;
  overflow: hidden;
}

.app-shimmer-btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgba(255, 255, 255, 0.15) 50%,
    transparent 60%
  );
  background-size: 200% 100%;
  animation: app-shimmer 2.5s ease-in-out infinite;
  pointer-events: none;
}

@keyframes app-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.app-float-slow {
  animation: app-float 5s ease-in-out infinite;
}

@keyframes app-pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(94, 234, 212, 0.32); }
  70% { box-shadow: 0 0 0 14px rgba(94, 234, 212, 0); }
  100% { box-shadow: 0 0 0 0 rgba(94, 234, 212, 0); }
}

.app-pulse {
  animation: app-pulse-ring 2.5s ease-out infinite;
}

/* ---------- Login page (public) ---------- */
body.app-login-page {
  font-family: var(--app-font);
  min-height: 100vh;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  color: var(--app-text);
  background-color: var(--app-bg-0);
  background-image:
    radial-gradient(ellipse 100% 78% at 18% 0%, rgba(94, 234, 212, 0.2), transparent 50%),
    radial-gradient(ellipse 78% 58% at 100% 28%, rgba(196, 181, 253, 0.16), transparent 50%),
    linear-gradient(162deg, var(--app-bg-0) 0%, var(--app-bg-1) 100%);
  overflow-x: hidden;
  position: relative;
}

.app-login-page::before {
  /* Real library/books photo backdrop with readable overlay */
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.95;
  background-image:
    linear-gradient(180deg, rgba(6, 8, 15, 0) 0%, rgba(6, 8, 15, 0) 58%, rgba(6, 8, 15, 0) 100%),
    url("https://images.unsplash.com/photo-1521587760476-6c12a4b040da?auto=format&fit=crop&w=2200&q=90");
  background-size: cover;
  background-position: center center;
  filter: saturate(1.1) contrast(1.07) brightness(1.03);
}

.app-login-page .login-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.app-login-page .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  animation: app-float 8s ease-in-out infinite;
}

.app-login-page .orb-1 {
  width: min(50vw, 420px);
  height: min(50vw, 420px);
  background: #5eead4;
  top: -10%;
  left: -10%;
  animation-delay: 0s;
}

.app-login-page .orb-2 {
  width: min(45vw, 380px);
  height: min(45vw, 380px);
  background: #a78bfa;
  bottom: -15%;
  right: -10%;
  animation-delay: -2s;
}

.app-login-page .orb-3 {
  width: min(35vw, 280px);
  height: min(35vw, 280px);
  background: #4ade80;
  top: 40%;
  right: 15%;
  animation-delay: -4s;
  opacity: 0.35;
}

.app-login-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  background: rgba(10, 14, 24, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--app-radius-lg);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
  box-shadow:
    var(--app-shadow),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset,
    0 -24px 48px -28px rgba(94, 234, 212, 0.12) inset;
  overflow: hidden;
  animation: login-in 0.85s var(--app-ease-out) both;
}

.app-login-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--app-accent), var(--app-accent-2));
  opacity: 0.95;
  pointer-events: none;
}

@keyframes login-in {
  from {
    opacity: 0;
    transform: translateY(36px) scale(0.96);
    filter: blur(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: none;
  }
}

.app-login-card .card-header {
  background: linear-gradient(135deg, var(--app-accent-dim), var(--app-accent-2-dim));
  border-bottom: 1px solid var(--app-border);
  padding: 1.75rem 1.5rem;
}

.app-login-card .card-header h4 {
  font-family: var(--app-display);
  font-size: 1.72rem;
  font-weight: 500;
  font-variation-settings: "SOFT" 45, "WONK" 0.3;
  margin: 0;
  background: linear-gradient(118deg, #fff, #ccfbf1, #e9d5ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.app-login-card .form-control {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--app-border);
  color: #fff;
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
}

.app-login-card .form-control::placeholder {
  color: rgba(148, 163, 184, 0.8);
}

.app-login-card .btn-login-submit {
  background: linear-gradient(135deg, #14b8a6, #6366f1);
  border: none;
  font-weight: 700;
  letter-spacing: 0.03em;
  border-radius: 0.8rem;
  padding: 0.85rem 1.25rem;
  transition: transform 0.3s var(--app-ease-spring), box-shadow 0.3s ease;
}

.app-login-card .btn-login-submit:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 44px rgba(20, 184, 166, 0.38);
}

.app-login-card .demo-credentials {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal-on-scroll {
    opacity: 1;
    transform: none;
    filter: none;
  }
}