html, body {
    font-family: var(--font-sans);
}

a, .btn-link {
    color: var(--color-primary);
}

.btn-primary {
    color: #fff;
    background-color: var(--color-primary);
    border-color: var(--color-primary-hover);
}

.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 var(--color-primary);
}

.content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid var(--color-success-light);
}

.invalid {
    outline: 1px solid var(--color-danger);
}

.validation-message {
    color: var(--color-danger);
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: var(--text-placeholder);
}

.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;
}

/* Modern Design Enhancements */

/* Update primary button styling */
.btn-primary {
    background: var(--color-primary-gradient);
    border: none;
    font-weight: 500;
    transition: var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

/* Modern sidebar styling */
.sidebar {
    background: var(--bg-primary);
}

.top-row {
    background: var(--color-primary-gradient);
    border-bottom: none;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
}

.navbar-brand i {
    font-size: 1.3rem;
}

/* Nav menu items - scoped to top navigation only */
.top-row .nav-item .nav-link {
    color: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    margin: 4px 12px;
    padding: 10px 16px;
    transition: var(--transition-fast);
    font-weight: 500;
}

.top-row .nav-item .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateX(5px);
}

.top-row .nav-item .nav-link.active {
    background: var(--color-primary-gradient);
    color: white;
}

.top-row .nav-item .nav-link i {
    margin-right: 8px;
    font-size: 1.1rem;
}

/* Content area */
.content {
    background: var(--bg-secondary);
    min-height: calc(100vh - 3.5rem);
}

/* Card styling */
.card {
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
}

.card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

/* Table styling */
.table {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table thead {
    background: var(--color-primary-gradient);
    color: white;
}

.table thead th {
    border: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: all 0.2s ease;
}

.table tbody tr:hover {
    background: var(--bg-secondary);
    transform: scale(1.01);
}

/* Alert styling */
.alert {
    border: none;
    border-radius: var(--radius-lg);
    border-left: 4px solid;
}

.alert-info {
    background: var(--color-info-bg);
    border-left-color: var(--color-info);
    color: var(--color-info-text);
}

.alert-success {
    background: var(--color-success-bg-subtle);
    border-left-color: var(--color-success-light);
    color: var(--color-success-text);
}

.alert-warning {
    background: var(--color-warning-bg);
    border-left-color: var(--color-warning);
    color: var(--color-warning-text);
}

.alert-danger {
    background: var(--color-danger-bg-subtle);
    border-left-color: var(--color-danger);
    color: var(--color-danger-hover);
}

/* Badge styling */
.badge {
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--radius-md);
}

/* Form controls */
.form-control, .form-select {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
    transition: var(--transition-fast);
}

.form-control:focus, .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
}

/* Modal styling */
.modal-content {
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    border-bottom: 1px solid var(--border-primary);
    background: var(--color-primary-gradient);
    color: white;
    border-radius: 12px 12px 0 0;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
}

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

/* ========================================
   Floating Action Button (FAB)
   ======================================== */

.btn-floating {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 1.5rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-floating:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.btn-floating:active {
    transform: scale(0.95);
}

.btn-floating:focus {
    outline: 2px solid white;
    outline-offset: 2px;
}

/* Extended label on hover (optional) */
.btn-floating::after {
    content: "New Letter";
    position: absolute;
    right: 70px;
    white-space: nowrap;
    background: var(--bs-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn-floating:hover::after {
    opacity: 1;
}

/* Pulse animation for first-time visitors */
@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    }
    50% {
        transform: scale(1.15);
        box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    }
}

.btn-floating.first-visit {
    animation: pulse 2s ease-in-out 3;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .btn-floating {
        bottom: 1rem;
        right: 1rem;
        width: 56px;
        height: 56px;
        font-size: 1.3rem;
    }

    /* Hide extended label on mobile */
    .btn-floating::after {
        display: none;
    }
}

/* Tablet adjustments */
@media (min-width: 769px) and (max-width: 1024px) {
    .btn-floating {
        bottom: 1.5rem;
        right: 1.5rem;
    }
}

/* Ensure button doesn't interfere with footer */
@media (max-height: 600px) {
    .btn-floating {
        bottom: 0.5rem;
        right: 0.5rem;
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }
}