/* DB Form Builder Frontend Styles — WCAG 2.1 AA */

/* Screen reader only text (WCAG 1.3.1) */
.screen-reader-text {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.dbfb-form {
    max-width: 600px;
    margin: 0 auto;
}

/* Fieldset reset for checkbox/radio groups */
.dbfb-form fieldset {
    border: none;
    padding: 0;
    margin: 0;
}

.dbfb-form fieldset legend {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: #1a1a1a; /* contrast ratio 16:1 on white */
    padding: 0;
    font-size: inherit;
}

.dbfb-form-group {
    margin-bottom: 20px;
}

.dbfb-form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: #1a1a1a; /* WCAG 1.4.3: contrast ratio 16:1 */
}

.dbfb-form-group label .required {
    color: #b32d2e; /* contrast ratio 5.6:1 on white - WCAG AA compliant */
    margin-left: 2px;
}

.dbfb-form-group input[type="text"],
.dbfb-form-group input[type="email"],
.dbfb-form-group input[type="tel"],
.dbfb-form-group input[type="url"],
.dbfb-form-group input[type="number"],
.dbfb-form-group input[type="date"],
.dbfb-form-group textarea,
.dbfb-form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #767676; /* WCAG 1.4.11: 4.5:1 contrast ratio for UI components */
    border-radius: 4px;
    font-size: 16px;
    color: #1a1a1a;
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
}

/* Focus visible (WCAG 2.4.7) - high contrast focus indicator */
.dbfb-form-group input:focus-visible,
.dbfb-form-group textarea:focus-visible,
.dbfb-form-group select:focus-visible {
    outline: 3px solid #0056b3;
    outline-offset: 1px;
    border-color: #0056b3;
    box-shadow: none;
}

/* Fallback for browsers without focus-visible */
.dbfb-form-group input:focus,
.dbfb-form-group textarea:focus,
.dbfb-form-group select:focus {
    outline: 3px solid #0056b3;
    outline-offset: 1px;
    border-color: #0056b3;
    box-shadow: none;
}

/* Only remove outline for mouse users when focus-visible is supported */
.dbfb-form-group input:focus:not(:focus-visible),
.dbfb-form-group textarea:focus:not(:focus-visible),
.dbfb-form-group select:focus:not(:focus-visible) {
    outline: none;
    border-color: #2271b1;
    box-shadow: 0 0 0 1px #2271b1;
}

.dbfb-form-group textarea {
    min-height: 120px;
    resize: vertical;
}

/* Placeholder contrast (WCAG 1.4.3: not required, but best practice) */
.dbfb-form-group input::placeholder,
.dbfb-form-group textarea::placeholder {
    color: #5a5a5a; /* 7:1 contrast ratio */
    opacity: 1;
}

/* Checkbox e Radio */
.dbfb-checkbox-group,
.dbfb-radio-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.dbfb-checkbox-item,
.dbfb-radio-item {
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 44px; /* WCAG 2.5.5: touch target size */
}

.dbfb-checkbox-item input,
.dbfb-radio-item input {
    width: 20px;
    height: 20px;
    margin: 0;
    flex-shrink: 0;
}

/* Focus for checkboxes/radios */
.dbfb-checkbox-item input:focus-visible,
.dbfb-radio-item input:focus-visible {
    outline: 3px solid #0056b3;
    outline-offset: 2px;
}

.dbfb-checkbox-item label,
.dbfb-radio-item label {
    margin: 0;
    font-weight: normal;
    cursor: pointer;
    color: #1a1a1a;
}

/* Submit button — WCAG 2.5.5: min 44x44 touch target */
.dbfb-submit {
    padding: 12px 30px;
    min-height: 44px;
    background: #0056b3; /* contrast ratio 8.6:1 with white text */
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
    position: relative;
}

.dbfb-submit:hover {
    background: #003d80;
}

.dbfb-submit:focus-visible {
    outline: 3px solid #0056b3;
    outline-offset: 3px;
}

.dbfb-submit:disabled {
    background: #5a5a5a;
    cursor: not-allowed;
    opacity: 0.7;
}

/* Loading state */
.dbfb-submit-loading {
    display: none;
}

.dbfb-form.loading .dbfb-submit-text {
    visibility: hidden;
}

.dbfb-form.loading .dbfb-submit-loading {
    display: inline;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    visibility: visible;
}

.dbfb-form.loading .dbfb-submit::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 15px;
    width: 18px;
    height: 18px;
    margin-top: -9px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: dbfb-spin 0.8s linear infinite;
}

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

/* Reduced motion (WCAG 2.3.3) */
@media (prefers-reduced-motion: reduce) {
    .dbfb-form.loading .dbfb-submit::after {
        animation: none;
        border-top-color: rgba(255,255,255,0.4);
    }
    
    .dbfb-form-group input,
    .dbfb-form-group textarea,
    .dbfb-form-group select,
    .dbfb-submit {
        transition: none;
    }
}

/* Messages (WCAG 4.1.3: status messages) */
.dbfb-message {
    padding: 15px 20px;
    border-radius: 4px;
    margin-bottom: 20px;
    font-weight: 500;
}

.dbfb-message:focus {
    outline: 3px solid #0056b3;
    outline-offset: 2px;
}

.dbfb-message.success {
    background: #d4edda;
    border: 2px solid #28a745;
    color: #0f5132; /* contrast ratio 8.7:1 */
}

.dbfb-message.error {
    background: #f8d7da;
    border: 2px solid #dc3545;
    color: #842029; /* contrast ratio 7:1 */
}

/* Field errors (WCAG 3.3.1: error identification) */
.dbfb-form-group.error input,
.dbfb-form-group.error textarea,
.dbfb-form-group.error select {
    border-color: #b32d2e;
    border-width: 2px;
}

.dbfb-form-group.error fieldset {
    border-left: 3px solid #b32d2e;
    padding-left: 10px;
}

.dbfb-field-error {
    color: #b32d2e; /* contrast ratio 5.6:1 */
    font-size: 14px;
    margin-top: 5px;
    min-height: 0;
}

.dbfb-field-error:empty {
    display: none;
}

/* Static content */
.dbfb-divider {
    margin: 25px 0;
}

.dbfb-divider hr {
    border: none;
    border-top: 1px solid #767676;
}

.dbfb-html-content {
    margin-bottom: 20px;
    line-height: 1.6;
    color: #1a1a1a;
}

.dbfb-image-content {
    margin-bottom: 20px;
    text-align: center;
}

.dbfb-image-content img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

/* reCAPTCHA notice */
.dbfb-recaptcha-notice {
    margin-top: 15px;
    color: #5a5a5a; /* 7:1 contrast ratio */
    font-size: 13px;
}

.dbfb-recaptcha-notice a {
    color: #0056b3;
    text-decoration: underline; /* WCAG 1.4.1: link distinguishable not only by color */
}

.dbfb-recaptcha-notice a:hover,
.dbfb-recaptcha-notice a:focus {
    color: #003d80;
}

/* GDPR checkbox */
.dbfb-gdpr-group {
    padding: 12px 15px;
    background: #f9f9f9;
    border: 1px solid #767676;
    border-radius: 4px;
}

.dbfb-gdpr-group a {
    color: #0056b3;
    margin-left: 5px;
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 600px) {
    .dbfb-form {
        padding: 0 15px;
    }
    
    .dbfb-form-group input,
    .dbfb-form-group textarea,
    .dbfb-form-group select {
        font-size: 16px; /* Prevent zoom on iOS */
    }
}

/* High contrast mode support */
@media (forced-colors: active) {
    .dbfb-submit {
        border: 2px solid ButtonText;
    }
    
    .dbfb-form-group.error input,
    .dbfb-form-group.error textarea,
    .dbfb-form-group.error select {
        border-color: Mark;
    }
    
    .dbfb-message.success,
    .dbfb-message.error {
        border: 2px solid CanvasText;
    }
}

/* Conditional logic: smooth transitions */
.dbfb-conditional {
    overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
    .dbfb-conditional {
        transition: none;
    }
}

/* File Upload — Drag & Drop */
.dbfb-file-dropzone {
    border: 2px dashed #767676;
    border-radius: 8px;
    padding: 25px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
    position: relative;
}

.dbfb-file-dropzone:hover,
.dbfb-file-dropzone:focus-visible {
    border-color: #0056b3;
    background: #f0f6fc;
}

.dbfb-file-dropzone.dbfb-file-dragover {
    border-color: #0056b3;
    background: #e3effa;
    border-style: solid;
}

.dbfb-file-dropzone.dbfb-file-has-files {
    border-style: solid;
    border-color: #0056b3;
}

.dbfb-file-dropzone:focus-visible {
    outline: 3px solid #0056b3;
    outline-offset: 2px;
}

.dbfb-file-dropzone-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    pointer-events: none;
}

.dbfb-file-icon {
    font-size: 32px;
    line-height: 1;
}

.dbfb-file-text {
    color: #5a5a5a;
    font-size: 14px;
}

.dbfb-file-input {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    border: 0 !important;
}

.dbfb-file-info {
    font-size: 12px;
    color: #5a5a5a;
    margin-top: 6px;
}

/* File list */
.dbfb-file-list {
    margin-top: 10px;
    text-align: left;
}

.dbfb-file-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 4px;
    font-size: 13px;
}

.dbfb-file-item.dbfb-file-error {
    background: #fef2f2;
    border-color: #b32d2e;
}

.dbfb-file-name {
    flex: 1;
    font-weight: 500;
    color: #1a1a1a;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dbfb-file-size {
    color: #5a5a5a;
    font-size: 12px;
    white-space: nowrap;
}

.dbfb-file-error-msg {
    color: #b32d2e;
    font-size: 12px;
    font-weight: 500;
}

.dbfb-file-remove {
    background: none;
    border: none;
    color: #b32d2e;
    font-size: 18px;
    cursor: pointer;
    padding: 2px 6px;
    line-height: 1;
    min-width: 30px;
    min-height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
}

.dbfb-file-remove:hover {
    background: #fef2f2;
}

.dbfb-file-remove:focus-visible {
    outline: 3px solid #0056b3;
    outline-offset: 1px;
}

/* Error state on dropzone */
.dbfb-form-group.error .dbfb-file-dropzone {
    border-color: #b32d2e;
}

@media (prefers-reduced-motion: reduce) {
    .dbfb-file-dropzone {
        transition: none;
    }
}

@media (forced-colors: active) {
    .dbfb-file-dropzone {
        border: 2px dashed ButtonText;
    }
    .dbfb-file-dropzone.dbfb-file-dragover {
        border-style: solid;
        border-color: Highlight;
    }
}

/* Multi-Step Form */
.dbfb-multistep {
    margin-bottom: 20px;
}

.dbfb-progress {
    background: #e9ecef;
    border-radius: 8px;
    height: 32px;
    margin-bottom: 25px;
    overflow: hidden;
    position: relative;
}

.dbfb-progress-bar {
    background: #0056b3;
    height: 100%;
    border-radius: 8px;
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
}

.dbfb-progress-text {
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
}

.dbfb-step {
    /* Steps are shown/hidden by JS */
}

.dbfb-step-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    margin-bottom: 20px;
}

.dbfb-step-prev,
.dbfb-step-next {
    min-height: 44px;
    padding: 10px 24px;
    border-radius: 4px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: background 0.2s;
}

.dbfb-step-prev {
    background: #e9ecef;
    color: #1a1a1a;
}

.dbfb-step-prev:hover {
    background: #d3d6db;
}

.dbfb-step-next {
    background: #0056b3;
    color: #fff;
    margin-left: auto;
}

.dbfb-step-next:hover {
    background: #003d80;
}

.dbfb-step-prev:focus-visible,
.dbfb-step-next:focus-visible {
    outline: 3px solid #0056b3;
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
    .dbfb-progress-bar {
        transition: none;
    }
}

@media (forced-colors: active) {
    .dbfb-progress {
        border: 1px solid CanvasText;
    }
    .dbfb-progress-bar {
        background: Highlight;
    }
    .dbfb-step-prev,
    .dbfb-step-next {
        border: 2px solid ButtonText;
    }
}