/* ===================================
   Page-Specific Styles
   =================================== */

/* ===================================
   Login Page
   =================================== */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(ellipse 80% 55% at 50% -10%, rgba(124, 108, 240, 0.16), transparent 70%),
        radial-gradient(ellipse 60% 40% at 85% 100%, rgba(79, 216, 235, 0.06), transparent 70%),
        var(--bg-primary);
    padding: var(--spacing-4);
}

.login-container {
    width: 100%;
    max-width: 420px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.login-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: var(--spacing-4) var(--spacing-6);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color 0.2s ease;
}

.login-back-link:hover {
    color: var(--color-primary);
}

.login-header {
    padding: var(--spacing-8) var(--spacing-6) var(--spacing-6);
    text-align: center;
}

.login-logo {
    width: 88px;
    margin: 0 auto var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-logo-img {
    width: 100%;
    height: auto;
    object-fit: contain;
}

.login-title {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-2);
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.login-form {
    padding: 0 var(--spacing-6) var(--spacing-8);
}

.login-form .form-group {
    margin-bottom: var(--spacing-4);
}

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

.login-form .btn {
    width: 100%;
    padding: var(--spacing-3);
    margin-top: var(--spacing-2);
}

.login-footer {
    padding: var(--spacing-4) var(--spacing-6);
    background-color: var(--bg-tertiary);
    text-align: center;
}

.login-footer p {
    font-size: var(--font-size-sm);
}

.login-footer a {
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

/* ===================================
   Dashboard Stats
   =================================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
}

.stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.stat-icon.new {
    background-color: rgba(74, 222, 128, 0.14);
    color: var(--status-new);
}

.stat-icon.in-progress {
    background-color: rgba(246, 176, 63, 0.14);
    color: var(--status-in-progress);
}

.stat-icon.opened {
    background-color: rgba(79, 216, 235, 0.12);
    color: var(--status-opened);
}

.stat-icon.total {
    background-color: rgba(167, 139, 250, 0.16);
    color: var(--color-primary-light);
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    line-height: 1;
    margin-bottom: var(--spacing-1);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ===================================
   Mail List
   =================================== */

.mail-tabs {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.mail-tabs .tabs {
    padding: 0 var(--spacing-4);
    background-color: var(--bg-tertiary);
}

.mail-list {
    padding: var(--spacing-4);
}

.mail-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-3);
    background-color: var(--bg-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mail-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.mail-item:last-child {
    margin-bottom: 0;
}

.mail-item-checkbox {
    flex-shrink: 0;
}

.mail-item-image {
    width: 80px;
    height: 60px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
    background-color: var(--bg-tertiary);
}

.mail-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.mail-item-content {
    flex: 1;
    min-width: 0;
}

.mail-item-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-1);
}

.mail-item-number {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.mail-item-type {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    padding: var(--spacing-1) var(--spacing-2);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.mail-item-sender {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mail-summary-icon {
    display: inline-flex;
    vertical-align: -2px;
    color: var(--color-info);
}

.mail-summary-icon svg {
    width: 13px;
    height: 13px;
}

.mail-item-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    flex-shrink: 0;
}

.mail-item-date {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.mail-item-actions {
    display: flex;
    gap: var(--spacing-1);
}

/* ===================================
   Mail Detail Page
   =================================== */

.mail-detail {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--spacing-6);
}

.mail-preview {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.mail-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--border-color-light);
}

.mail-preview-title {
    font-weight: var(--font-weight-semibold);
}

.mail-preview-content {
    position: relative;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
}

.mail-preview-content img {
    max-width: 100%;
    max-height: 600px;
    object-fit: contain;
}

.mail-preview-content iframe {
    width: 100%;
    height: 600px;
    border: none;
}

.mail-info {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-lg);
}

.mail-info-header {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--border-color-light);
}

.mail-info-body {
    padding: var(--spacing-4);
}

.mail-info-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--border-color-light);
}

.mail-info-item:last-child {
    border-bottom: none;
}

.mail-info-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.mail-info-value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.mail-actions {
    padding: var(--spacing-4);
    border-top: 1px solid var(--border-color-light);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.mail-actions .btn {
    width: 100%;
    justify-content: flex-start;
}

@media (max-width: 1024px) {
    .mail-detail {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Pickup Schedule
   =================================== */

.pickup-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6);
}

.pickup-form-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
}

.pickup-form-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-4);
}

.pickup-date-time {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

.pickup-selected-mails {
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color-light);
}

.pickup-selected-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-2);
}

.pickup-selected-list {
    max-height: 200px;
    overflow-y: auto;
}

.pickup-selected-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-2);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-sm);
}

@media (max-width: 1024px) {
    .pickup-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Settings Page
   =================================== */

.settings-section {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
}

.settings-section-header {
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border-color-light);
}

.settings-section-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.settings-section-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-1);
}

.settings-section-body {
    padding: var(--spacing-5);
}

.settings-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--border-color-light);
}

.settings-item:last-child {
    border-bottom: none;
}

.settings-item-info {
    flex: 1;
}

.settings-item-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.settings-item-description {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: var(--spacing-1);
}

/* Toggle Switch */
.toggle {
    position: relative;
    width: 48px;
    height: 26px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background-color: var(--border-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.toggle-slider::before {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    left: 3px;
    bottom: 3px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-full);
    transition: transform var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.toggle input:checked + .toggle-slider {
    background-color: var(--color-primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(22px);
}

/* ===================================
   File Gallery (Opened Mail)
   =================================== */

.file-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-4);
    padding: var(--spacing-4);
}

.file-item {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.file-item:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.file-preview {
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
}

.file-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.file-preview-pdf {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    color: var(--color-danger);
    padding: var(--spacing-4);
    text-align: center;
}

.file-preview-pdf svg {
    width: 48px;
    height: 48px;
}

.file-preview-pdf span {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.file-preview-pdf small {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.file-preview-error {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    padding: var(--spacing-4);
}

.file-info {
    padding: var(--spacing-3);
    text-align: center;
}

.file-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-date {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: var(--spacing-1);
}

.file-info .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
}

.file-info .btn svg {
    width: 14px;
    height: 14px;
}

/* ===================================
   Image Lightbox
   =================================== */

.lightbox {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    color: white;
    padding: var(--spacing-2);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    padding: var(--spacing-4);
}

.lightbox-prev {
    left: var(--spacing-4);
}

.lightbox-next {
    right: var(--spacing-4);
}

/* ===================================
   PDF Modal Viewer
   =================================== */

.pdf-modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.pdf-modal.active {
    opacity: 1;
}

.pdf-modal.closing {
    opacity: 0;
}

.pdf-modal-backdrop {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.8);
}

.pdf-modal-content {
    position: relative;
    width: 90vw;
    max-width: 1200px;
    height: 90vh;
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.pdf-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--border-color-light);
    background-color: var(--bg-secondary);
}

.pdf-modal-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.pdf-modal-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.pdf-modal-body {
    flex: 1;
    overflow: hidden;
}

.pdf-modal-body iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* PDF Viewer Container */
.pdf-viewer-container {
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.pdf-viewer-fallback {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
}

.pdf-viewer-fallback svg {
    width: 64px;
    height: 64px;
    color: var(--color-danger);
}

/* ===================================
   USPS 1583 Form Page
   =================================== */

.usps1583-page {
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-primary);
}

.usps1583-page .page-header {
    margin-bottom: var(--spacing-6);
}

.usps1583-page .page-title {
    color: var(--text-primary);
}

.usps1583-page .page-description {
    color: var(--text-secondary);
}

.usps1583-page .back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-4);
    transition: color var(--transition-fast);
}

.usps1583-page .back-link:hover {
    color: var(--color-primary);
}

/* Image preview of a chosen document file, shown before submission */
.usps1583-page .file-upload-thumb {
    width: 96px;
    height: 64px;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

/* Tertiary escape hatch: skip the form for now (dashboard shows a reminder) */
.usps1583-page #usps1583-later-btn {
    margin-top: var(--spacing-3);
    color: var(--text-secondary);
}

.usps1583-page #usps1583-later-btn:hover {
    color: var(--text-primary);
}

.usps1583-container {
    padding: 0 var(--spacing-4);
}

.usps1583-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
    color: var(--text-primary);
}

.usps1583-progress {
    padding: var(--spacing-6);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color-light);
}

.usps1583-content {
    padding: var(--spacing-6);
    min-height: 400px;
    color: var(--text-primary);
}

.usps1583-nav {
    padding: var(--spacing-4) var(--spacing-6);
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color-light);
}

.usps1583-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    color: var(--text-secondary);
}

.usps1583-form {
    max-width: 600px;
}

.usps1583-form .form-group {
    margin-bottom: var(--spacing-5);
}

.usps1583-form .form-label {
    color: var(--text-primary);
}

.usps1583-form .form-input,
.usps1583-form .form-select {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.usps1583-form .form-input::placeholder {
    color: var(--text-tertiary);
}

.usps1583-form .form-hint {
    color: var(--text-tertiary);
}

/* Step section styling */
.step-section {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-2);
    color: var(--text-primary);
}

.step-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
}

/* Progress steps */
.progress-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
}

.progress-step-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
}

.progress-step-circle svg {
    width: 20px;
    height: 20px;
}

.progress-step.active .progress-step-circle {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.progress-step.completed .progress-step-circle {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: white;
}

.progress-step-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.progress-step.active .progress-step-label {
    color: var(--color-primary);
}

.progress-step.completed .progress-step-label {
    color: var(--color-success);
}

.progress-line {
    width: 60px;
    height: 2px;
    background-color: var(--border-color);
    margin-bottom: 24px;
}

/* Step navigation buttons */
.step-nav-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Radio group styling */
.radio-group {
    display: flex;
    gap: var(--spacing-4);
}

.radio-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.radio-option:hover {
    border-color: var(--color-primary);
}

.radio-option input[type="radio"] {
    display: none;
}

.radio-option input[type="radio"]:checked + .radio-checkmark + .radio-label {
    color: var(--color-primary);
}

.radio-option input[type="radio"]:checked ~ .radio-checkmark::after {
    transform: scale(1);
}

.radio-option:has(input[type="radio"]:checked) {
    border-color: var(--color-primary);
    background-color: rgba(124, 108, 240, 0.08);
}

.radio-checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.radio-checkmark::after {
    content: '';
    width: 10px;
    height: 10px;
    background-color: var(--color-primary);
    border-radius: 50%;
    transform: scale(0);
    transition: transform var(--transition-fast);
}

.radio-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

/* File upload area */
.file-upload-area {
    position: relative;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.file-upload-area:hover,
.file-upload-area.dragover {
    border-color: var(--color-primary);
    background-color: rgba(124, 108, 240, 0.08);
}

.file-upload-area .file-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.file-upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--text-secondary);
}

.file-upload-content svg {
    color: var(--text-tertiary);
}

.file-upload-content p {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.file-upload-content span {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.file-upload-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.file-upload-preview .file-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.file-upload-preview .file-remove-btn {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: none;
    background-color: var(--color-danger);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    line-height: 1;
    transition: background-color var(--transition-fast);
}

.file-upload-preview .file-remove-btn:hover {
    background-color: var(--color-danger-hover);
}

/* Form hint text */
.form-hint {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--spacing-1);
}

/* Loading spinner small */
.loading-spinner-sm {
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Form rows */
.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
}

.form-row-3 {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 640px) {
    .form-row,
    .form-row-3 {
        grid-template-columns: 1fr;
    }
    
    .progress-steps {
        flex-wrap: wrap;
    }
    
    .progress-line {
        display: none;
    }
    
    .radio-group {
        flex-direction: column;
    }
}