/* ============================================
   FLATERO - Form Styles
   All form elements and states
   
   UX-08 Compliance: CSS Design Token Audit (Phase 17-06)
   - Form colors use CSS variables from variables.css
   - Focus states use --focus-ring-shadow for consistency
   - Dark mode uses intentional hex overrides (documented in UX-02 block)
   - Transitions use --transition-normal variable
   - Fallback colors match WCAG-compliant variable values
   ============================================ */

/* ==========  FORM GROUP  ========== */
.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--space-4);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--gray-700);
    margin-bottom: var(--space-2);
}

.form-group .required {
    color: var(--error);
    font-weight: var(--font-weight-bold);
    margin-left: 2px;
}

/* ==========  INPUTS (FORM-01: Animated borders)  ========== */
.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px var(--space-4);
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--gray-700);
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
}

/* FORM-01: Clean focus state */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 3px var(--sky-bg-light);
}

/* Hover state for inputs */
.form-group input:hover:not(:focus),
.form-group select:hover:not(:focus),
.form-group textarea:hover:not(:focus) {
    border-color: var(--gray-300);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-500);
}

/* ==========  SELECT  ========== */
.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%235a6b7d' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 44px;
    cursor: pointer;
}

/* ==========  TEXTAREA  ========== */
.form-group textarea {
    resize: vertical;
    min-height: 110px;
}

/* ==========  FORM ROW  ========== */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ==========  FORM HELP TEXT  ========== */
.form-help {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
    margin-bottom: 14px;
    line-height: var(--line-height-normal);
}

.form-note {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
    text-align: center;
    margin-top: var(--space-2);
}

.form-note a {
    color: var(--gray-500);
    text-decoration: underline;
}

/* ==========  ERROR STATES  ========== */
.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--error);
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-error, #dc2626);
    margin-top: var(--space-1);
    display: none;  /* Hidden by default - only show when has content */
    align-items: center;
    gap: var(--space-1);
}

/* Only show error when it has text content */
.form-error:not(:empty) {
    display: flex;
}

.form-error::before {
    content: '\26A0';  /* Warning symbol */
    font-size: 12px;
}

/* ==========  SUCCESS STATES  ========== */
.form-group.success input,
.form-group.success select,
.form-group.success textarea,
.form-group.valid input,
.form-group.valid select,
.form-group.valid textarea {
    border-color: var(--success);
}

/* Subtle valid checkmark indicator */
.form-group.valid {
    position: relative;
}

.form-group.valid::after {
    content: '\2713';
    position: absolute;
    right: var(--space-3);
    top: 38px;
    color: var(--success);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    pointer-events: none;
}

.form-success-message {
    font-size: var(--font-size-xs);
    color: var(--color-success, #15803d);
    margin-top: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.form-success-message::before {
    content: '\2713';  /* Checkmark */
    font-size: 12px;
    font-weight: bold;
}

/* ==========  FILE UPLOAD  ========== */
.file-upload {
    position: relative;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.file-upload:hover {
    border-color: var(--primary);
    background: rgba(30, 41, 59, 0.02);
}

/* Focus state for keyboard navigation */
.file-upload:focus-within {
    border-color: var(--primary);
    box-shadow: var(--focus-ring-shadow);
}

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

.file-upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: 28px;
    color: var(--gray-500);
    text-align: center;
}

.file-upload-content svg {
    color: var(--gray-400);
}

.file-upload-content small {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

.file-upload.dragover {
    border-color: var(--primary);
    background: rgba(30, 41, 59, 0.04);
}

.file-preview {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: 14px;
}

.file-preview-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) 14px;
    background: var(--success-light);
    border-radius: var(--radius);
    font-size: var(--font-size-xs);
    color: var(--success);
    font-weight: var(--font-weight-medium);
}

.file-preview-item button {
    background: none;
    border: none;
    color: var(--error);
    cursor: pointer;
    font-size: 18px;
    padding: 0;
    line-height: 1;
    transition: transform var(--transition-normal);
}

.file-preview-item button:hover {
    transform: scale(1.2);
}

/* ==========  FORM-03: File Upload Progress  ========== */
.file-upload-progress {
    margin-top: var(--space-2);
}

.file-upload-progress-bar {
    height: 6px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.file-upload-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--info) 0%, var(--green-500) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    width: 0%;
}

.file-upload-progress-text {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-1);
    font-size: 12px;
    color: var(--gray-500);
}

.file-upload-progress.complete .file-upload-progress-fill {
    background: var(--green-500);
}

.file-upload-progress.error .file-upload-progress-fill {
    background: var(--error);
}

/* ==========  CHECKBOX GROUP  ========== */
/* Note: Checkbox inputs are hidden, so use :focus-within on container
   and :focus-visible on the hidden input to show focus ring on .checkbox-box */
.checkbox-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 14px var(--space-4);
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

.checkbox-item:hover {
    border-color: var(--primary);
}

/* Focus state for keyboard navigation on checkbox container */
.checkbox-item:focus-within {
    border-color: var(--primary);
    box-shadow: var(--focus-ring-shadow);
}

.checkbox-item input {
    display: none;
}

/* Focus visible state on hidden checkbox transfers to visible checkbox-box */
.checkbox-item input:focus-visible ~ .checkbox-box {
    box-shadow: var(--focus-ring-shadow);
}

.checkbox-box {
    width: 22px;
    height: 22px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    flex-shrink: 0;
}

.checkbox-item input:checked ~ .checkbox-box {
    background: var(--primary);
    border-color: var(--primary);
}

.checkbox-item input:checked ~ .checkbox-box::after {
    content: '\2713';
    color: var(--white);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
}

.checkbox-item input:checked ~ span:last-child {
    color: var(--gray-800);
    font-weight: var(--font-weight-medium);
}

@media (max-width: 768px) {
    .checkbox-group {
        grid-template-columns: 1fr;
    }
}

/* ==========  FORM SUCCESS STATE  ========== */
.form-success {
    text-align: center;
    padding: 50px var(--space-6);
}

.form-success-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 28px;
    font-size: 40px;
    color: var(--white);
    background: var(--success);
    border-radius: 50%;
}

.form-success h3 {
    font-size: 26px;
    margin-bottom: 14px;
}

.form-success p {
    color: var(--gray-500);
    margin-bottom: 28px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
    line-height: var(--line-height-relaxed);
}

.form-success-steps {
    text-align: left;
    max-width: 420px;
    margin: 0 auto 24px;
    padding: 20px 24px;
    background: var(--gray-50, #f9fafb);
    border-radius: var(--radius-lg, 12px);
    border: 1px solid var(--gray-100, #f3f4f6);
}

.form-success-steps h4 {
    font-size: 15px;
    font-weight: var(--font-weight-semibold, 600);
    color: var(--gray-700, #374151);
    margin-bottom: 12px;
}

.form-success-steps ol {
    list-style: none;
    counter-reset: steps;
    padding: 0;
    margin: 0;
}

.form-success-steps ol li {
    counter-increment: steps;
    padding: 8px 0 8px 36px;
    position: relative;
    font-size: 14px;
    line-height: 1.5;
    color: var(--gray-600, #4b5563);
}

.form-success-steps ol li::before {
    content: counter(steps);
    position: absolute;
    left: 0;
    top: 8px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent, #1e3a5f);
    color: white;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 700;
}

.form-success-steps ol li + li {
    border-top: 1px solid var(--gray-100, #f3f4f6);
}

.form-success-note {
    font-size: 13px;
    color: var(--gray-500, #64748b);
}

.form-success-note a {
    color: var(--accent, #1e3a5f);
    font-weight: var(--font-weight-semibold, 600);
}

/* ==========  FORM DISABLED STATE  ========== */
.form-disabled {
    text-align: center;
    padding: 60px 30px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--gray-300);
}

.form-disabled-icon {
    font-size: 48px;
    margin-bottom: var(--space-5);
}

.form-disabled h3 {
    margin-bottom: var(--space-3);
    color: var(--gray-700);
}

.form-disabled p {
    color: var(--gray-500);
}

/* ==========  FLOATING LABEL PATTERN (UI-02)  ========== */
/* Opt-in floating labels — use .form-floating instead of .form-group.
   Inputs MUST have placeholder=" " (space) for :not(:placeholder-shown) to work. */
.form-floating {
    position: relative;
    margin-bottom: var(--space-4);
}

.form-floating input,
.form-floating textarea {
    padding: 18px var(--space-4) 8px;
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--gray-700);
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    width: 100%;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.form-floating label {
    position: absolute;
    left: var(--space-4);
    top: 14px;
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    pointer-events: none;
    transition: all var(--transition-normal);
    transform-origin: left top;
    background: transparent;
    line-height: 1;
}

.form-floating input:focus ~ label,
.form-floating input:not(:placeholder-shown) ~ label,
.form-floating textarea:focus ~ label,
.form-floating textarea:not(:placeholder-shown) ~ label {
    top: -8px;
    left: 12px;
    font-size: var(--font-size-xs);
    color: var(--primary);
    background: var(--white);
    padding: 0 4px;
    font-weight: var(--font-weight-medium);
}

.form-floating input:focus,
.form-floating textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--sky-bg-light);
}

.form-floating input:hover:not(:focus),
.form-floating textarea:hover:not(:focus) {
    border-color: var(--gray-300);
}

/* Error state for floating labels */
.form-floating.error input,
.form-floating.error textarea {
    border-color: var(--error);
}

.form-floating .form-error {
    margin-top: var(--space-1);
}

/* Required indicator inside floating label */
.form-floating label .required {
    color: var(--error);
    font-weight: var(--font-weight-bold);
    margin-left: 2px;
}

/* ==========  VALIDATION ANIMATIONS  ========== */
/* Animated shake for error state */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

.form-group.error.shake input,
.form-group.error.shake select,
.form-group.error.shake textarea,
.form-floating.error.shake input {
    animation: shake 0.4s ease;
}

/* Native validation pseudo-classes */
input:user-valid {
    border-color: var(--success);
}

input:user-invalid {
    border-color: var(--error);
}

/* ==========  REDUCED MOTION  ========== */
@media (prefers-reduced-motion: reduce) {
    .form-group.error.shake input,
    .form-group.error.shake select,
    .form-group.error.shake textarea,
    .form-floating.error.shake input {
        animation: none;
    }
    
    .form-floating label {
        transition: none;
    }
}

/* ==========  FILE INPUT  ========== */
/* Hide the native file input - we use a custom label instead */
.form-file-input {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
    opacity: 0;
    pointer-events: none;
}

/* Custom styled file upload button */
.file-upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--white, #fff);
    color: var(--gray-700, #334155);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1.5px solid var(--gray-300, #d1d5db);
    border-radius: var(--radius, 8px);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
    user-select: none;
}

.file-upload-btn:hover {
    border-color: var(--primary, #1e293b);
    background: var(--gray-50, #f9fafb);
}

.file-upload-btn:active {
    background: var(--gray-100, #f1f5f9);
}

.file-upload-btn:focus-within,
.form-file-input:focus + .file-upload-btn {
    border-color: var(--primary, #1e293b);
    box-shadow: 0 0 0 3px rgba(30, 41, 59, 0.12);
}

.file-upload-btn svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.file-upload-count {
    font-size: 0.8rem;
    color: var(--gray-500, #64748b);
    margin-left: 4px;
}

.form-help-text {
    display: block;
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--gray-500, #64748b);
    margin-top: var(--space-1, 4px);
}

/* ==========  IMAGE PREVIEW GRID  ========== */
.image-preview-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.image-preview-grid:empty {
    display: none;
}

.image-preview-item {
    position: relative;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    overflow: visible;
    border: 1px solid var(--gray-200, #e2e8f0);
    background: var(--gray-50, #f9fafb);
}

.image-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 7px;
}

.image-preview-item .file-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: var(--gray-100, #f1f5f9);
    color: var(--gray-600, #475569);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 7px;
    gap: 4px;
    padding: 4px;
    text-align: center;
    overflow: hidden;
}

.image-preview-item .file-badge .file-ext {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary, #1e293b);
}

.image-preview-item .file-badge .file-name {
    font-size: 0.55rem;
    font-weight: 400;
    color: var(--gray-500, #64748b);
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.image-preview-item .remove-preview {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--gray-700, #334155);
    color: #fff;
    border: 2px solid var(--white, #fff);
    font-size: 13px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    z-index: 2;
    transition: background 0.15s;
}

.image-preview-item .remove-preview:hover {
    background: var(--error, #dc2626);
}

.image-preview-item .remove-preview:focus-visible {
    outline: 2px solid var(--primary, #1e293b);
    outline-offset: 2px;
}

/* Smaller remove button on mobile to match proportions */
@media (max-width: 768px) {
    .image-preview-item .remove-preview {
        width: 18px;
        height: 18px;
        font-size: 11px;
        top: -4px;
        right: -4px;
        border-width: 1.5px;
    }
}

/* Optional service-specific field with inline hint */
.form-group--extra label .form-hint-inline {
    font-weight: 400;
    font-size: 0.82em;
    color: var(--text-muted, #64748b);
    margin-left: 4px;
}