html {
  font-size: 14px;
  height: 100%;
}

@media (max-width: 991.98px) {
    .ad-banner-frame {
        height: 300px;
    }
}

@media (max-width: 575.98px) {
    .ad-banner-frame {
        height: 200px;
    }

    .ad-banner-placeholder {
        font-size: 0.9rem;
    }
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

/* Gray and White Theme Variables */
:root {
  --color-primary-dark: #2c3e50;
  --color-primary: #34495e;
  --color-secondary: #7f8c8d;
  --color-light: #bdc3c7;
  --color-lighter: #ecf0f1;
  --color-white: #ffffff;
  --color-text: #2c3e50;
  --color-muted: #95a5a6;
  --color-border: #dee2e6;

  --color-btn-bg: #f8f9fa;
  --color-btn-hover: #f1f3f5;
  --color-btn-border: #e9ecef;
  --color-btn-border-hover: #dee2e6;
  --color-btn-text: #212529;

  --color-alert-success: #d5dbdb;
  --color-navbar-link: rgba(255, 255, 255, 0.85);

  --color-marker-border: #ffffff;
  --color-marker-accent: #007bff;

  --shadow-color: rgba(0, 0, 0, 0.1);
  --shadow-soft: rgba(0, 0, 0, 0.04);
  --shadow-medium: rgba(0, 0, 0, 0.2);
  --shadow-marker: rgba(0, 0, 0, 0.3);
  --shadow-navbar-logo: rgba(0, 0, 0, 0.8);

  --focus-ring: rgba(52, 73, 94, 0.25);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-lighter);
  color: var(--color-text);
  margin: 0;
}

header {
  position: sticky;
  top: 0;
  z-index: 1030;
  flex-shrink: 0;
}

main {
  flex: 1 0 auto;
}

/* Navbar Styling */
.navbar-dark {
  background-color: var(--color-primary-dark) !important;
}

.navbar-dark .navbar-brand {
  color: var(--color-white);
}

.navbar-dark .nav-link {
  color: var(--color-navbar-link) !important;
}

.navbar-dark .nav-link:hover {
  color: var(--color-white) !important;
}

.navbar-dark .dropdown-menu {
  background-color: var(--color-primary);
  border: 1px solid var(--color-secondary);
}

.navbar-dark .dropdown-item {
  color: var(--color-white);
}

.navbar-dark .dropdown-item:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

/* Rounded navbar theme */
.navbar {
  position: sticky;
  top: 0;
  border-radius: 16px;
  /*margin: 12px auto;*/
  padding: 0.5rem 1rem;
  box-shadow: 0 2px 6px var(--shadow-soft);
}

.navbar .nav-link,
.navbar .dropdown-toggle {
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
}

.navbar .nav-link:hover,
.navbar .dropdown-toggle:hover {
  background-color: var(--color-btn-bg);
}

.navbar .dropdown-menu {
  border-radius: 12px;
  box-shadow: 0 4px 10px var(--shadow-soft);
}

/* Button Styling */
.btn {
  border-radius: 12px;
  padding: 0.5rem 0.9rem;
  box-shadow: 0 2px 6px var(--shadow-soft);
  transition: all 0.15s ease-in-out;
}

.btn-primary {
  background-color: var(--color-btn-bg);
  border-color: var(--color-btn-border);
  color: var(--color-btn-text);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-btn-hover);
  border-color: var(--color-btn-border-hover);
  color: var(--color-btn-text);
}

.btn-outline-primary {
  background-color: var(--color-white);
  border-color: var(--color-btn-border);
  color: var(--color-btn-text);
}

.btn-outline-primary:hover {
  background-color: var(--color-btn-bg);
  border-color: var(--color-btn-border-hover);
  color: var(--color-btn-text);
}

.btn-secondary {
  background-color: var(--color-btn-border);
  border-color: var(--color-btn-border);
  color: var(--color-btn-text);
}

.btn-secondary:hover {
  background-color: var(--color-btn-border-hover);
  border-color: var(--color-btn-border-hover);
  color: var(--color-btn-text);
}

.btn-outline-secondary {
  background-color: var(--color-white);
  border-color: var(--color-btn-border);
  color: var(--color-btn-text);
}

.btn-outline-secondary:hover {
  background-color: var(--color-btn-bg);
  border-color: var(--color-btn-border-hover);
  color: var(--color-btn-text);
}

/* Card Styling */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 4px var(--shadow-color);
  border-radius: 14px;
}

.card-header {
  background-color: var(--color-btn-bg) !important;
  color: var(--color-text) !important;
  border-bottom: 1px solid var(--color-border);
  border-top-left-radius: 14px;
  border-top-right-radius: 14px;
}

.card-header.bg-primary {
  background-color: var(--color-btn-bg) !important;
}

.card-header .mb-0 {
  margin: 0;
  padding: 6px 10px;
  border-radius: 10px;
  background-color: var(--color-btn-bg);
  box-shadow: none;
  display: inline-block;
}

.card.mb-4 {
  border-radius: 14px;
}

.card.mb-4 .card-header {
  border-top-left-radius: 14px;
  border-top-right-radius: 14px;
}

.card.mb-4 .card-footer {
  border-bottom-left-radius: 14px;
  border-bottom-right-radius: 14px;
}

/* Badge Styling */
.badge.bg-primary {
  background-color: var(--color-primary) !important;
}

.badge.bg-secondary {
  background-color: var(--color-secondary) !important;
}

.badge.bg-danger {
  background-color: var(--color-muted) !important;
}

/* Alert Styling */
.alert-info {
  background-color: var(--color-lighter);
  border-color: var(--color-light);
  color: var(--color-text);
}

.alert-success {
  background-color: var(--color-alert-success);
  border-color: var(--color-secondary);
  color: var(--color-text);
}

.alert-warning {
  background-color: var(--color-lighter);
  border-color: var(--color-light);
  color: var(--color-text);
}

/* Form Styling */
.form-control,
.form-select,
.form-check-input,
.input-group-text,
textarea {
  border-radius: 12px;
  border-color: var(--color-border);
  background-color: var(--color-white);
  color: var(--color-text);
  box-shadow: 0 2px 6px var(--shadow-soft);
  transition: all 0.15s ease-in-out;
}

.form-control::placeholder,
.form-select::placeholder,
textarea::placeholder {
  color: var(--color-muted);
}

.form-control:focus,
.form-select:focus,
textarea:focus {
  border-color: var(--color-btn-border-hover);
  box-shadow: 0 0 0 0.25rem var(--focus-ring);
}

.input-group-text {
  background-color: var(--color-btn-bg);
  border-color: var(--color-border);
  color: var(--color-text);
  box-shadow: 0 2px 6px var(--shadow-soft);
}

.form-check-input {
  width: 1.1rem;
  height: 1.1rem;
}

.form-check-input:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.form-label {
  color: var(--color-text);
}

.form-text {
  color: var(--color-muted);
}

/* List Group */
.list-group-item {
  background-color: var(--color-white);
  border-color: var(--color-border);
}

.list-group-item-action:hover {
  background-color: var(--color-lighter);
}

.list-group-item.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: var(--color-primary-dark);
}

/* Footer */
.footer {
  flex-shrink: 0;
  padding: 1rem 0;
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
}

/* Text Colors */
.text-primary {
  color: var(--color-primary) !important;
}

.text-secondary {
  color: var(--color-secondary) !important;
}

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

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

.table thead {
  background-color: var(--color-lighter);
  color: var(--color-text);
}

.table-hover tbody tr:hover {
  background-color: var(--color-lighter);
}

/* Navbar Logo */
.navbar-logo {
  max-height: 50px;
  width: auto;
  filter: drop-shadow(2px 2px 4px var(--shadow-navbar-logo));
}

.navbar-brand-text {
  color: var(--color-white);
  font-weight: 600;
  font-size: 1.1rem;
  display: none; /* Hidden by default */
}

/* Show brand text only on mobile (below 576px) */
@media (max-width: 575.98px) {
  .navbar-brand-text {
    display: inline-block;
  }
  
  .navbar-logo {
    max-height: 40px; /* Slightly smaller logo on mobile */
  }
}

/* Ensure navbar brand items are properly aligned */
.navbar-brand {
  display: flex;
  align-items: center;
}

.navbar-brand:hover .navbar-brand-text {
  color: var(--color-lighter);
}

/* Container Backgrounds */
.container,
.container-fluid {
  background-color: transparent;
}

main {
  background-color: transparent;
}

/* Modal Styling */
.modal-content {
  background-color: var(--color-white);
  border-color: var(--color-border);
}

.modal-header {
  background-color: var(--color-lighter);
  border-bottom: 1px solid var(--color-border);
}

.modal-footer {
  background-color: var(--color-lighter);
  border-top: 1px solid var(--color-border);
}

/* Pagination */
.pagination .page-link {
  color: var(--color-primary);
  background-color: var(--color-white);
  border-color: var(--color-border);
}

.pagination .page-link:hover {
  background-color: var(--color-lighter);
  border-color: var(--color-border);
}

.pagination .page-item.active .page-link {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Dropdown */
.dropdown-menu {
  background-color: var(--color-white);
  border-color: var(--color-border);
}

.dropdown-item:hover {
  background-color: var(--color-lighter);
}

/* Progress Bar */
.progress {
  background-color: var(--color-lighter);
}

.progress-bar {
  background-color: var(--color-primary);
}

/* Breadcrumb */
.breadcrumb {
  background-color: var(--color-lighter);
}

.breadcrumb-item.active {
  color: var(--color-text);
}

/* Tabs */
.nav-tabs .nav-link {
  color: var(--color-text);
}

.nav-tabs .nav-link:hover {
  border-color: var(--color-light);
}

.nav-tabs .nav-link.active {
  background-color: var(--color-white);
  border-color: var(--color-border);
  color: var(--color-primary);
}

/* Accordion */
.accordion-button {
  background-color: var(--color-lighter);
  color: var(--color-text);
}

.accordion-button:not(.collapsed) {
  background-color: var(--color-light);
  color: var(--color-text);
}

.accordion-button:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.25rem var(--focus-ring);
}

/* Spinner */
.spinner-border-primary {
  color: var(--color-primary);
}

/* Custom Scrollbar (Webkit browsers) */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-lighter);
}

::-webkit-scrollbar-thumb {
  background: var(--color-secondary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Focus Outlines */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.ad-banner {
    max-width: 1200px;
    margin: 0 auto 1.5rem;
    padding: 0 1rem;
}

.ad-banner-frame {
    width: 100%;
    aspect-ratio: 1400 / 400;
    border-radius: 12px;
    background: #e9ecef;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-banner-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.ad-banner-placeholder {
    color: #6c757d;
    font-weight: 600;
}

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

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

/* Custom logo marker styles */
.custom-logo-marker {
    background: transparent !important;
    border: none !important;
    width: 40px !important;
    height: 52px !important;
}

.logo-marker-container {
    width: 40px !important;
    height: 40px !important;
    min-width: 40px !important;
    min-height: 40px !important;
    max-width: 40px !important;
    max-height: 40px !important;
    position: relative;
    border-radius: 50%;
    overflow: hidden;
    filter: drop-shadow(0 2px 4px var(--shadow-marker));
    transition: transform 0.2s ease;
    transform-origin: center center;
}

.logo-marker-container::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 12px solid var(--color-marker-border);
    filter: drop-shadow(0 2px 2px var(--shadow-marker-soft));
}

.logo-marker-image {
    width: 100% !important;
    height: 100% !important;
    min-width: 100% !important;
    min-height: 100% !important;
    max-width: 100% !important;
    max-height: 100% !important;
    display: block;
    border-radius: 50%;
    object-fit: cover;
    object-position: center center;
    box-sizing: border-box;
    border: 3px solid var(--color-marker-border);
    background: var(--color-marker-border);
    box-shadow: 0 2px 4px var(--shadow-marker-soft);
    transition: border-color 0.2s ease;
}

.logo-marker-container:hover {
    transform: scale(1.1);
}

.logo-marker-container:hover .logo-marker-image {
    border-color: var(--color-marker-accent);
}

/* Responsive helpers for cards, lists, tabs, and admin pages */
@media (max-width: 991.98px) {
  .card .card-body {
    padding: 1rem;
  }

  .card .card-header {
    padding: 0.75rem 1rem;
  }

  .list-group-item {
    padding: 0.75rem 1rem;
  }

  .list-group-item.d-flex {
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start !important;
  }

  .nav-tabs {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .nav-tabs .nav-link {
    border-radius: 10px;
  }

  .input-group {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .input-group .btn,
  .input-group .form-control {
    width: 100%;
  }
}

@media (max-width: 575.98px) {
  h1, h2, h3 {
    font-size: 1.25rem;
  }

  .card {
    border-radius: 12px;
  }

  .card-header {
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
  }

  .card-header .mb-0 {
    padding: 4px 8px;
  }

  .btn {
    width: 100%;
  }

  .btn + .btn {
    margin-top: 0.5rem;
  }

  .search-group {
    max-width: 100%;
  }

  .search-group .btn,
  .search-group .form-control {
    width: 100%;
  }
}