html {
  font-size: 14px;
}

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

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

/* ==========================================
   Premium Navigation Hover & Selected Menu Styles
   ========================================== */

/* Main Navbar Gradient */
.navbar-dark.bg-primary {
    background: linear-gradient(135deg, #1d4ed8, #2563eb) !important; /* Deep modern sapphire/royal blue */
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* Secondary Navbar Gradient */
.navbar-dark.bg-success {
    background: linear-gradient(135deg, #059669, #10b981) !important; /* Vibrant emerald green */
    border: none;
}

/* Navigation Brand Styling */
.navbar-dark .navbar-brand {
    color: #ffffff !important;
    font-weight: 700;
    letter-spacing: 0.5px;
    opacity: 1 !important;
}

/* Base Nav Link Styles */
.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.75) !important;
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    padding-left: 0.85rem !important;
    padding-right: 0.85rem !important;
    padding-bottom: 8px !important;
    padding-top: 8px !important;
    margin: 0 0.15rem;
    transition: color 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Animated Underline Effect */
.navbar-dark .navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 8%;
    width: 84%;
    height: 3px;
    background-color: #ffffff;
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: bottom center;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Specific Underline Colors for Main Blue Navbar */
.navbar-dark.bg-primary .navbar-nav .nav-link::after {
    background-color: #38bdf8; /* Light Sky Blue/Cyan Underline */
}

/* Specific Underline Colors for Secondary Green Navbar */
.navbar-dark.bg-success .navbar-nav .nav-link::after {
    background-color: #6ee7b7; /* Mint/Emerald Underline */
}

/* Hover State */
.navbar-dark .navbar-nav .nav-link:hover {
    color: #ffffff !important;
}

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

/* Selected/Active State (on the .nav-item list element) */
.navbar-dark .navbar-nav .nav-item.active .nav-link {
    color: #ffffff !important;
    font-weight: 700;
}

.navbar-dark .navbar-nav .nav-item.active .nav-link::after {
    transform: scaleX(1);
    background-color: #ffffff !important; /* Active underlines are solid white */
}

/* Fallback: if .active is applied directly to the nav-link */
.navbar-dark .navbar-nav .nav-link.active {
    color: #ffffff !important;
    font-weight: 700;
}

.navbar-dark .navbar-nav .nav-link.active::after {
    transform: scaleX(1);
    background-color: #ffffff !important;
}

/* Exclude right-aligned login partial elements (text span & logout button) from underlines */
.navbar-dark .navbar-nav .nav-link.btn-link::after,
.navbar-dark .navbar-nav span.nav-link::after {
    display: none !important;
}

.navbar-dark .navbar-nav span.nav-link {
    font-weight: normal !important;
    cursor: default;
}

/* ==========================================
   Premium Dark Mode Overrides
   ========================================== */

[data-bs-theme="dark"] body {
    background-color: #0b0f19 !important; /* Extremely clean deep dark blue/gray */
    color: #e2e8f0 !important;
}

/* Slick elevated card designs for dark mode */
[data-bs-theme="dark"] .card {
    background-color: #111827 !important; /* Elevated slate/dark gray card */
    border: 1px solid #1f2937 !important;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3) !important;
}

[data-bs-theme="dark"] .card-header {
    background-color: #1f2937 !important;
    border-bottom: 1px solid #374151 !important;
    color: #ffffff !important;
}

[data-bs-theme="dark"] .card-footer {
    background-color: #1f2937 !important;
    border-top: 1px solid #374151 !important;
}

/* Inputs and Forms */
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
    color: #f3f4f6 !important;
}

[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus {
    background-color: #1f2937 !important;
    border-color: #3b82f6 !important;
    box-shadow: 0 0 0 0.15rem rgba(59, 130, 246, 0.25) !important;
    color: #ffffff !important;
}

/* Modals & Popups */
[data-bs-theme="dark"] .modal-content {
    background-color: #111827 !important;
    border-color: #1f2937 !important;
    color: #f3f4f6 !important;
}

[data-bs-theme="dark"] .modal-header {
    border-bottom-color: #1f2937 !important;
}

[data-bs-theme="dark"] .modal-footer {
    border-top-color: #1f2937 !important;
}

/* Tables styling */
[data-bs-theme="dark"] .table {
    --bs-table-bg: #111827 !important;
    --bs-table-hover-bg: #1f2937 !important;
    --bs-table-border-color: #1f2937 !important;
    color: #e5e7eb !important;
}

/* Lists and Groups */
[data-bs-theme="dark"] .list-group-item {
    background-color: #111827 !important;
    border-color: #1f2937 !important;
    color: #e5e7eb !important;
}

[data-bs-theme="dark"] .list-group-item.active {
    background-color: #2563eb !important;
    border-color: #2563eb !important;
    color: #ffffff !important;
}

/* Typography elements */
[data-bs-theme="dark"] .text-muted {
    color: #9ca3af !important;
}

[data-bs-theme="dark"] h1,
[data-bs-theme="dark"] h2,
[data-bs-theme="dark"] h3,
[data-bs-theme="dark"] h4,
[data-bs-theme="dark"] h5,
[data-bs-theme="dark"] h6 {
    color: #ffffff !important;
}

/* Custom shadow / glow effect on hover for toggle button */
#theme-toggle {
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

#theme-toggle:hover {
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.25);
    background-color: rgba(255, 255, 255, 0.15) !important;
    transform: scale(1.05);
}

/* Copy Button Interaction Styles */
.message-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.message-container .copy-btn {
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.1s ease, color 0.2s ease;
}

.message-container:hover .copy-btn {
    opacity: 0.6;
}

.message-container .copy-btn:hover {
    opacity: 1;
    transform: scale(1.15);
    color: #2563eb !important;
}

[data-bs-theme="dark"] .message-container .copy-btn:hover {
    color: #60a5fa !important;
}

@media (max-width: 768px) {
    .message-container .copy-btn {
        opacity: 0.5;
    }
}