/**
 * Forms Boss Front-End Styling
 * Clean CSS Custom Properties - Responsive CSS Grid
 *
 * @package Forms_Boss
 */

:root {
    --fb-bg: #0b0d13;
    --fb-card-bg: #11141d;
    --fb-text: #f1f5f9;
    --fb-text-muted: #94a3b8;
    --fb-border: #1e293b;
    --fb-input-bg: #080a0f;
    --fb-input-border: #334155;
    --fb-input-focus: #6366f1;
    --fb-primary: #6366f1;
    --fb-primary-hover: #4f46e5;
    --fb-radius: 8px;
    --fb-font-family: inherit;
    --fb-error: #ef4444;
    --fb-success: #10b981;
}

.fb-form-container {
    background-color: var(--fb-card-bg);
    color: var(--fb-text);
    border: 1px solid var(--fb-border);
    border-radius: var(--fb-radius);
    padding: 30px;
    margin: 20px 0;
    font-family: var(--fb-font-family);
    box-sizing: border-box;
}

.fb-form-container * {
    box-sizing: border-box;
}

.fb-frontend-title {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 26px;
    font-weight: 700;
    color: var(--fb-text);
}

.fb-frontend-desc {
    margin-top: 0;
    margin-bottom: 24px;
    color: var(--fb-text-muted);
    font-size: 15px;
    line-height: 1.5;
}

/* Fields Grid */
.fb-fields-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 18px;
}

.fb-field-wrap {
    grid-column: span 12;
    display: flex;
    flex-direction: column;
}

.fb-field-wrap.cs-col-6 { grid-column: span 6; }
.fb-field-wrap.cs-col-4 { grid-column: span 4; }
.fb-field-wrap.cs-col-3 { grid-column: span 3; }

.fb-field-label {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--fb-text);
}

.fb-required-asterisk {
    color: var(--fb-error);
    margin-left: 2px;
}

.fb-field-description {
    font-size: 12px;
    color: var(--fb-text-muted);
    margin-top: 5px;
    margin-bottom: 0;
}

/* Form Inputs */
.fb-input,
.fb-select,
.fb-textarea {
    width: 100%;
    padding: 11px 14px;
    background-color: var(--fb-input-bg);
    color: var(--fb-text);
    border: 1px solid var(--fb-input-border);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    outline: none;
}

.fb-input:focus,
.fb-select:focus,
.fb-textarea:focus {
    border-color: var(--fb-input-focus);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.fb-input-invalid {
    border-color: var(--fb-error) !important;
}

/* Choices (Radio & Checkbox) */
.fb-choices-wrap {
    display: flex;
    gap: 12px;
    margin-top: 4px;
}

.fb-choices-stacked { flex-direction: column; gap: 8px; }
.fb-choices-inline { flex-direction: row; flex-wrap: wrap; }

.fb-choice-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    cursor: pointer;
    color: var(--fb-text);
}

.fb-radio,
.fb-checkbox {
    width: 16px;
    height: 16px;
    accent-color: var(--fb-primary);
    cursor: pointer;
}

/* Compound Grids (Name & Address) */
.fb-subfields-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 12px;
}

.fb-name-grid .fb-subfield { grid-column: span 6; }
.fb-address-grid .fb-subfield-full { grid-column: span 12; }
.fb-address-grid .fb-subfield-half { grid-column: span 6; }
.fb-sublabel {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--fb-text-muted);
    margin-bottom: 4px;
    display: block;
}

/* File Upload Dropzone */
.fb-upload-dropzone {
    border: 2px dashed var(--fb-input-border);
    border-radius: 6px;
    padding: 24px;
    text-align: center;
    background: var(--fb-input-bg);
    cursor: pointer;
    position: relative;
}

.fb-upload-dropzone:hover {
    border-color: var(--fb-primary);
}

.fb-file-input {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    opacity: 0;
    cursor: pointer;
}

.fb-upload-prompt {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--fb-text-muted);
    font-size: 14px;
}

.fb-upload-prompt .dashicons {
    font-size: 28px;
    width: 28px;
    height: 28px;
    color: var(--fb-primary);
}

/* Signature Pad */
.fb-signature-pad-wrap {
    border: 1px solid var(--fb-input-border);
    border-radius: 6px;
    background: #ffffff;
    display: inline-block;
    max-width: 100%;
}

.fb-signature-canvas {
    display: block;
    cursor: crosshair;
    touch-action: none;
}

.fb-signature-actions {
    padding: 6px 10px;
    background: #f1f5f9;
    border-top: 1px solid #e2e8f0;
    text-align: right;
}

.fb-btn-clear-signature {
    background: none;
    border: none;
    color: #64748b;
    font-size: 12px;
    cursor: pointer;
}

.fb-btn-clear-signature:hover {
    color: #ef4444;
}

/* Section Breaks */
.fb-section-header { margin-top: 16px; }
.fb-section-title { font-size: 18px; font-weight: 700; color: var(--fb-text); margin: 0 0 4px; }
.fb-section-description { font-size: 13px; color: var(--fb-text-muted); margin: 0; }
.fb-section-divider { border: none; border-top: 1px solid var(--fb-border); margin: 12px 0 18px; }

/* Multi-Page Progress Bar */
.fb-progress-bar-wrap {
    background: var(--fb-input-bg);
    border: 1px solid var(--fb-border);
    border-radius: 12px;
    height: 10px;
    position: relative;
    margin-bottom: 24px;
    overflow: hidden;
}

.fb-progress-bar-fill {
    background: var(--fb-primary);
    height: 100%;
    transition: width 0.3s ease;
}

.fb-step-counter {
    margin-top: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--fb-text-muted);
}

.fb-step-pane { display: none; }
.fb-step-pane.active { display: block; animation: fbFadeIn 0.25s ease; }

@keyframes fbFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Navigation & Submit Buttons */
.fb-step-navigation,
.fb-form-submit-row {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

.fb-btn-nav,
.fb-submit-btn {
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: background 0.15s ease, transform 0.1s ease;
}

.fb-submit-btn,
.fb-btn-next {
    background: var(--fb-primary);
    color: #ffffff;
}

.fb-submit-btn:hover,
.fb-btn-next:hover {
    background: var(--fb-primary-hover);
}

.fb-btn-prev {
    background: var(--fb-input-bg);
    color: var(--fb-text);
    border: 1px solid var(--fb-input-border);
}

.fb-save-draft-row {
    text-align: center;
    margin-top: 12px;
}

.fb-save-draft-link {
    background: none;
    border: none;
    color: var(--fb-text-muted);
    font-size: 13px;
    text-decoration: underline;
    cursor: pointer;
}

/* Response Messages */
.fb-response-box {
    margin-top: 20px;
    padding: 16px 20px;
    border-radius: 6px;
    font-size: 15px;
    line-height: 1.5;
}

.fb-response-success {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid var(--fb-success);
    color: #34d399;
}

.fb-response-error {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid var(--fb-error);
    color: #f87171;
}

@media (max-width: 768px) {
    .fb-field-wrap.cs-col-6,
    .fb-field-wrap.cs-col-4,
    .fb-name-grid .fb-subfield,
    .fb-address-grid .fb-subfield-half {
        grid-column: span 12;
    }
}