/*
 * Calibre-Web Dark Glassmorphism Theme
 * A smoked glass aesthetic with dark translucent panels
 */

/* ============================================
   CSS Variables - Easy Customization
   ============================================ */
:root {
  /* Background colors */
  --bg-gradient-start: #0f0f1a;
  --bg-gradient-mid: #1a1a2e;
  --bg-gradient-end: #16213e;
  
  /* Glass effect */
  --glass-bg: rgba(15, 15, 25, 0.7);
  --glass-bg-light: rgba(25, 25, 40, 0.6);
  --glass-bg-darker: rgba(10, 10, 18, 0.8);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(255, 255, 255, 0.15);
  --glass-blur: 12px;
  
  /* Accent colors */
  --accent-primary: #6366f1;      /* Indigo */
  --accent-secondary: #14b8a6;    /* Teal (original Calibre-Web color) */
  --accent-glow: rgba(99, 102, 241, 0.4);
  --accent-glow-secondary: rgba(20, 184, 166, 0.4);
  
  /* Text colors */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--accent-glow);
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

/* ============================================
   Base / Body
   ============================================ */
body {
  background: linear-gradient(135deg, 
    var(--bg-gradient-start) 0%, 
    var(--bg-gradient-mid) 50%, 
    var(--bg-gradient-end) 100%) !important;
  background-attachment: fixed !important;
  color: var(--text-primary) !important;
  min-height: 100vh;
}

/* Fallback for older browsers */
@supports not (backdrop-filter: blur(10px)) {
  body {
    background: var(--bg-gradient-start) !important;
  }
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary) !important;
}

a {
  color: var(--accent-secondary) !important;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

a:hover {
  color: var(--accent-primary) !important;
  text-shadow: 0 0 8px var(--accent-glow);
  text-decoration: none;
}

p, span, label {
  color: var(--text-secondary);
}

/* ============================================
   Navbar - Smoked Glass Header
   ============================================ */
.navbar-default {
  background: var(--glass-bg) !important;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: none !important;
  border-bottom: 1px solid var(--glass-border) !important;
  box-shadow: var(--shadow-md), 0 1px 0 var(--glass-border);
}

.navbar-default .navbar-brand {
  color: var(--accent-secondary) !important;
  text-shadow: 0 0 20px var(--accent-glow-secondary);
  transition: text-shadow 0.3s ease;
}

.navbar-default .navbar-brand:hover {
  text-shadow: 0 0 30px var(--accent-glow-secondary), 0 0 60px var(--accent-glow-secondary);
}

.navbar-default .navbar-nav > li > a {
  color: var(--text-primary) !important;
  transition: all 0.2s ease;
}

.navbar-default .navbar-nav > li > a:hover {
  color: var(--accent-primary) !important;
  background: rgba(255, 255, 255, 0.05) !important;
}

.navbar-default .navbar-toggle {
  border-color: var(--glass-border) !important;
}

.navbar-default .navbar-toggle .icon-bar {
  background-color: var(--text-primary) !important;
}

.navbar-default .navbar-collapse {
  border-color: var(--glass-border) !important;
}

/* Dropdown menus */
.navbar-default .dropdown-menu {
  background: var(--glass-bg-darker) !important;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.navbar-default .dropdown-menu > li > a {
  color: var(--text-primary) !important;
}

.navbar-default .dropdown-menu > li > a:hover {
  background: rgba(255, 255, 255, 0.08) !important;
  color: var(--accent-primary) !important;
}

/* ============================================
   Main Container
   ============================================ */
.container-fluid {
  background: transparent !important;
}

/* ============================================
   Book Cards - Dark Glass with Hover Glow
   ============================================ */
.container-fluid .book {
  background: var(--glass-bg-light) !important;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-lg) !important;
  padding: 12px !important;
  margin: 10px !important;  /* Spacing between glass cards */
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
  /* Center book content */
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.container-fluid .book:hover {
  transform: translateY(-5px);
  border-color: var(--glass-border-hover) !important;
  box-shadow: var(--shadow-lg), 0 0 30px rgba(99, 102, 241, 0.15);
}

/* Book covers */
.cover {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md) !important;
  display: flex;
  justify-content: center;
  align-items: center;
}

.cover img,
.container-fluid .book .cover span img {
  border: none !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-md) !important;
  transition: all 0.3s ease;
  object-fit: contain !important;
  max-width: 100%;
  max-height: 100%;
  width: auto !important;
  height: auto !important;
}

.container-fluid .book:hover .cover img,
.container-fluid .book:hover .cover span img {
  box-shadow: var(--shadow-lg), 0 0 25px var(--accent-glow) !important;
}

/* Book metadata */
.container-fluid .book .meta .title {
  color: var(--text-primary) !important;
  font-weight: 600;
}

.container-fluid .book .meta .author {
  color: var(--text-secondary) !important;
}

.container-fluid .book .meta .series {
  color: var(--text-muted) !important;
}

/* Badges on covers */
.cover .badge {
  background: var(--glass-bg-darker) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* ============================================
   Single Book View
   ============================================ */
.container-fluid .single .cover img {
  border: 1px solid var(--glass-border) !important;
  box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 0, 0, 0.5) !important;
}

/* ============================================
   Well / Login Panel - Dark Glass
   ============================================ */
.well {
  background: var(--glass-bg) !important;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
}

/* ============================================
   Forms - Glass Inputs
   ============================================ */
.form-control {
  background: rgba(0, 0, 0, 0.3) !important;
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-sm) !important;
  color: var(--text-primary) !important;
  transition: all 0.2s ease;
}

.form-control:focus {
  background: rgba(0, 0, 0, 0.4) !important;
  border-color: var(--accent-primary) !important;
  box-shadow: 0 0 0 3px var(--accent-glow), var(--shadow-sm) !important;
  outline: none;
}

.form-control::placeholder {
  color: var(--text-muted) !important;
}

/* Labels */
label {
  color: var(--text-primary) !important;
}

/* Checkboxes */
.checkbox label {
  color: var(--text-secondary) !important;
}

/* ============================================
   Buttons - Glass with Glow
   ============================================ */
.btn-default {
  background: var(--glass-bg-light) !important;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border) !important;
  color: var(--text-primary) !important;
  border-radius: var(--radius-sm) !important;
  transition: all 0.2s ease;
}

.btn-default:hover,
.btn-default:focus {
  background: rgba(255, 255, 255, 0.1) !important;
  border-color: var(--glass-border-hover) !important;
  color: var(--text-primary) !important;
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), #4f46e5) !important;
  border: none !important;
  border-radius: var(--radius-sm) !important;
  color: white !important;
  box-shadow: var(--shadow-sm), 0 0 20px var(--accent-glow);
  transition: all 0.2s ease;
}

.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(135deg, #7c7ff7, var(--accent-primary)) !important;
  box-shadow: var(--shadow-md), 0 0 30px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Success/Danger buttons */
.btn-success {
  background: linear-gradient(135deg, #10b981, #059669) !important;
  border: none !important;
  box-shadow: var(--shadow-sm), 0 0 15px rgba(16, 185, 129, 0.3);
}

.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626) !important;
  border: none !important;
  box-shadow: var(--shadow-sm), 0 0 15px rgba(239, 68, 68, 0.3);
}

/* Button group spacing fix */
.btn-group {
  display: flex;
  gap: 5px;
}

/* Success button link text */
a.btn-success,
a.btn-success:hover,
a.btn-success:focus {
  color: var(--text-primary) !important;
}

/* Info button link text */
a.btn-info,
a.btn-info:hover,
a.btn-info:focus {
  color: var(--text-primary) !important;
}

/* ============================================
   Modals - Dark Glass Dialog
   ============================================ */
.modal-content {
  background: var(--glass-bg-darker) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-lg), 0 0 60px rgba(0, 0, 0, 0.5);
}

.modal-header {
  border-bottom: 1px solid var(--glass-border) !important;
  color: var(--text-primary);
}

.modal-header .close {
  color: var(--text-secondary) !important;
  text-shadow: none;
  opacity: 0.7;
}

.modal-header .close:hover {
  color: var(--text-primary) !important;
  opacity: 1;
}

.modal-title {
  color: var(--text-primary) !important;
}

.modal-body {
  color: var(--text-secondary);
}

.modal-footer {
  border-top: 1px solid var(--glass-border) !important;
}

.modal-backdrop.in {
  opacity: 0.7;
  background: var(--bg-gradient-start);
}

/* ============================================
   Navigation Sidebar
   ============================================ */
.navigation {
  background: var(--glass-bg) !important;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-lg) !important;
  padding: 15px !important;
  margin-bottom: 20px;
}

.navigation li a {
  color: var(--text-primary) !important;
  border-radius: var(--radius-sm) !important;
  transition: all 0.2s ease;
}

.navigation li a:hover {
  background: rgba(255, 255, 255, 0.08) !important;
  color: var(--accent-primary) !important;
}

.navigation .nav-head {
  color: var(--text-muted) !important;
  border-top-color: var(--glass-border) !important;
}

.navigation .create-shelf a {
  background: linear-gradient(135deg, var(--accent-secondary), #0d9488) !important;
  box-shadow: 0 0 15px var(--accent-glow-secondary);
}

.navigation .create-shelf a:hover {
  box-shadow: 0 0 25px var(--accent-glow-secondary);
}

/* ============================================
   Panels
   ============================================ */
.panel {
  background: var(--glass-bg) !important;
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-md) !important;
}

.panel-default > .panel-heading {
  background: var(--glass-bg-darker) !important;
  border-bottom: 1px solid var(--glass-border) !important;
  color: var(--text-primary) !important;
  border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
}

.panel-body {
  background: transparent !important;
  color: var(--text-secondary);
}

.panel-title > a {
  color: var(--text-primary) !important;
}

/* ============================================
   Tables
   ============================================ */
.table {
  color: var(--text-primary);
}

.table > thead > tr > th {
  border-bottom: 1px solid var(--glass-border) !important;
  color: var(--text-primary) !important;
}

.table > tbody > tr > td {
  border-top: 1px solid var(--glass-border) !important;
  color: var(--text-secondary);
}

.table > tbody > tr:hover > td {
  background: rgba(255, 255, 255, 0.03) !important;
}

.table .bg-primary {
  background: var(--accent-primary) !important;
}

.table .bg-dark-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626) !important;
}

/* Fix striped table rows for dark theme */
.table-striped > tbody > tr:nth-of-type(odd) {
  background: rgba(255, 255, 255, 0.03) !important;
}

.table-striped > tbody > tr:nth-of-type(even) {
  background: transparent !important;
}

/* ============================================
   Pills / Tags
   ============================================ */
input.pill + label {
  border-color: var(--accent-secondary) !important;
  color: var(--accent-secondary) !important;
  background: transparent;
  transition: all 0.2s ease;
}

input.pill + label:hover {
  background: rgba(20, 184, 166, 0.1) !important;
  box-shadow: 0 0 15px var(--accent-glow-secondary);
}

input.pill:checked + label {
  background: linear-gradient(135deg, var(--accent-secondary), #0d9488) !important;
  border-color: var(--accent-secondary) !important;
  color: white !important;
  box-shadow: 0 0 20px var(--accent-glow-secondary);
}

/* ============================================
   Ratings
   ============================================ */
.rating .glyphicon-star-empty {
  color: var(--text-muted) !important;
}

.rating .glyphicon-star.good {
  color: #fbbf24 !important;
  text-shadow: 0 0 10px rgba(251, 191, 36, 0.5);
}

/* ============================================
   Tooltips
   ============================================ */
.tooltip-inner {
  background: var(--glass-bg-darker) !important;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  color: var(--text-primary) !important;
}

.tooltip.bottom .tooltip-arrow {
  border-bottom-color: var(--glass-bg-darker) !important;
}

/* ============================================
   Alerts - Fully Colored Dark Theme
   ============================================ */
.alert {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-md) !important;
  padding: 15px 20px !important;
}

.alert-success {
  background: rgba(16, 185, 129, 0.15) !important;
  border: 1px solid rgba(16, 185, 129, 0.3) !important;
  color: #6ee7b7 !important;
}

.alert-danger {
  background: rgba(239, 68, 68, 0.15) !important;
  border: 1px solid rgba(239, 68, 68, 0.3) !important;
  color: #fca5a5 !important;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.15) !important;
  border: 1px solid rgba(245, 158, 11, 0.3) !important;
  color: #fcd34d !important;
}

.alert-info {
  background: rgba(99, 102, 241, 0.15) !important;
  border: 1px solid rgba(99, 102, 241, 0.3) !important;
  color: #a5b4fc !important;
}

/* ============================================
   Pagination
   ============================================ */
.pagination > li > a,
.pagination > li > span {
  background: var(--glass-bg) !important;
  border: 1px solid var(--glass-border) !important;
  color: var(--text-primary) !important;
  transition: all 0.2s ease;
}

.pagination > li > a:hover {
  background: rgba(255, 255, 255, 0.08) !important;
  border-color: var(--glass-border-hover) !important;
}

.pagination > .active > a,
.pagination > .active > span {
  background: var(--accent-primary) !important;
  border-color: var(--accent-primary) !important;
  box-shadow: 0 0 15px var(--accent-glow);
}

/* ============================================
   Breadcrumbs
   ============================================ */
.breadcrumb {
  background: var(--glass-bg) !important;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-md) !important;
}

.breadcrumb > li + li::before {
  color: var(--text-muted) !important;
}

/* ============================================
   Discover Section
   ============================================ */
.discover .btn {
  background: var(--glass-bg-light) !important;
  border: 1px solid var(--glass-border) !important;
  color: var(--text-primary) !important;
}

.discover .btn:hover {
  background: rgba(255, 255, 255, 0.1) !important;
  border-color: var(--accent-primary) !important;
}

/* ============================================
   Scrollbar Styling
   ============================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-gradient-start);
}

::-webkit-scrollbar-thumb {
  background: var(--glass-bg-light);
  border-radius: 4px;
  border: 1px solid var(--glass-border);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--glass-bg-light) var(--bg-gradient-start);
}

/* ============================================
   Selection Color
   ============================================ */
::selection {
  background: var(--accent-primary);
  color: white;
}

::-moz-selection {
  background: var(--accent-primary);
  color: white;
}

/* ============================================
   Animations
   ============================================ */
@keyframes subtle-glow {
  0%, 100% {
    box-shadow: var(--shadow-md), 0 0 20px var(--accent-glow);
  }
  50% {
    box-shadow: var(--shadow-md), 0 0 30px var(--accent-glow);
  }
}

/* Apply subtle animation to focused elements */
.form-control:focus {
  animation: subtle-glow 2s ease-in-out infinite;
}

/* ============================================
   Login Page - Centered & Styled
   ============================================ */

/* Hide navbar on login page */
body.login .navbar {
  display: none !important;
}

/* Fix alert container margin */
body.login .row-fluid.text-center {
  margin-top: 0 !important;
}

/* Add padding to login body */
body.login {
  padding: 20px !important;
}

/* Subtle background pattern - applies to all sizes */
body.login {
  background: 
    radial-gradient(circle at 25% 25%, rgba(99, 102, 241, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(20, 184, 166, 0.03) 0%, transparent 50%),
    linear-gradient(135deg, 
      var(--bg-gradient-start) 0%, 
      var(--bg-gradient-mid) 50%, 
      var(--bg-gradient-end) 100%) !important;
  background-attachment: fixed !important;
}

/* Prominent branding above form - applies to all sizes */
body.login .well::before {
  content: "Calibre-Web";
  display: block;
  font-family: 'Grand Hotel', cursive;
  font-size: 3rem;
  color: var(--accent-secondary);
  text-align: center;
  margin-bottom: 1rem;
  text-shadow: 0 0 30px var(--accent-glow-secondary);
  white-space: nowrap;
}

/* Hide original h2 */
body.login .well h2 {
  display: none;
}

/* Static glowing border - applies to all sizes */
body.login .well {
  border: 1px solid rgba(99, 102, 241, 0.3) !important;
  box-shadow: var(--shadow-lg),
              0 0 30px var(--accent-glow),
              inset 0 0 20px rgba(99, 102, 241, 0.05);
}

/* Enhanced input focus states */
body.login .form-control:focus {
  border-color: var(--accent-primary) !important;
  box-shadow: 0 0 0 3px var(--accent-glow),
              0 0 20px var(--accent-glow),
              inset 0 0 10px rgba(99, 102, 241, 0.1) !important;
}

/* Only apply centering fixes on screens >= 768px */
@media (min-width: 768px) {
  /* Override Bootstrap grid */
  body.login .well.col-sm-6 {
    width: auto !important;
    float: none !important;
  }

  body.login .well.col-sm-offset-2 {
    margin-left: auto !important;
    margin-right: auto !important;
  }

  /* Center the container */
  body.login .container-fluid .row-fluid {
    display: flex;
    justify-content: center;
  }

  /* Constrain width */
  body.login .well {
    max-width: 450px;
    width: 100%;
  }
  
  /* Larger branding on desktop */
  body.login .well::before {
    font-size: 4rem;
  }
}

/* Below 768px: Centering handled by Bootstrap natively */

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 768px) {
  .navbar-default .navbar-collapse {
    background: var(--glass-bg-darker) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    margin-top: 10px;
  }
  
  .navigation {
    margin: 10px;
  }
}