/**
 * Knowtiv Forms Widget — Base Styles
 *
 * All classes prefixed with .knt- to avoid conflicts with host site.
 * Theme colors injected as CSS custom properties on .knt-form-module.
 *
 * Override any of these in the module's "Custom CSS" field.
 */

/* ── Loading state ───────────────────────────────────────────────── */
.knt-form-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 3rem;
    color: #6b7280;
    font-family: system-ui, -apple-system, sans-serif;
    font-size: 0.875rem;
}

.knt-spinner {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid #e5e7eb;
    border-top-color: var(--knt-primary, #6366f1);
    border-radius: 50%;
    animation: knt-spin 0.6s linear infinite;
}

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

/* ── Form container ──────────────────────────────────────────────── */
.knt-form-module {
    --knt-primary: #111827;
    --knt-accent: #6366f1;
    --knt-bg: transparent;
    --knt-surface: #ffffff;
    --knt-text: #111827;
    --knt-text-secondary: #6b7280;
    --knt-border: #e5e7eb;
    --knt-error: #ef4444;
    --knt-success: #22c55e;
    --knt-radius: 8px;
    --knt-font: system-ui, -apple-system, sans-serif;

    font-family: var(--knt-font);
    color: var(--knt-text);
    line-height: 1.6;
    max-width: 640px;
}

.knt-form-module *,
.knt-form-module *::before,
.knt-form-module *::after {
    box-sizing: border-box;
}

/* ── Header ──────────────────────────────────────────────────────── */
.knt-form-header {
    margin-bottom: 1.5rem;
}

.knt-form-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--knt-text);
    margin: 0 0 0.5rem;
    line-height: 1.3;
}

.knt-form-description {
    font-size: 0.9375rem;
    color: var(--knt-text-secondary);
    margin: 0;
}

/* ── Cover image ─────────────────────────────────────────────────── */
.knt-form-cover {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--knt-radius);
    margin-bottom: 1.5rem;
}

/* ── Progress bar ────────────────────────────────────────────────── */
.knt-progress-bar {
    display: flex;
    gap: 4px;
    margin-bottom: 1.5rem;
}

.knt-progress-step {
    flex: 1;
    height: 4px;
    border-radius: 2px;
    background: var(--knt-border);
    transition: background 0.3s ease;
}

.knt-progress-step.active {
    background: var(--knt-accent);
}

/* ── Section ─────────────────────────────────────────────────────── */
.knt-section {
    display: none;
}

.knt-section.active {
    display: block;
}

.knt-section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--knt-text);
    margin: 0 0 0.25rem;
}

.knt-section-description {
    font-size: 0.875rem;
    color: var(--knt-text-secondary);
    margin: 0 0 1.25rem;
}

/* ── Fields ──────────────────────────────────────────────────────── */
.knt-field {
    margin-bottom: 1.25rem;
}

.knt-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--knt-text);
    margin-bottom: 0.375rem;
}

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

.knt-help-text {
    font-size: 0.75rem;
    color: var(--knt-text-secondary);
    margin-top: 0.25rem;
}

/* ── Inputs ──────────────────────────────────────────────────────── */
.knt-input,
.knt-textarea,
.knt-select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    font-family: var(--knt-font);
    color: var(--knt-text);
    background: var(--knt-surface);
    border: 1px solid var(--knt-border);
    border-radius: var(--knt-radius);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.knt-input:focus,
.knt-textarea:focus,
.knt-select:focus {
    border-color: var(--knt-accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--knt-accent) 15%, transparent);
}

.knt-input.knt-error,
.knt-textarea.knt-error,
.knt-select.knt-error {
    border-color: var(--knt-error);
}

.knt-textarea {
    resize: vertical;
    min-height: 100px;
}

.knt-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1em;
    padding-right: 2.5rem;
}

/* ── Checkboxes & Radios ─────────────────────────────────────────── */
.knt-option-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.knt-option-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: var(--knt-text);
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    border-radius: var(--knt-radius);
    border: 1px solid var(--knt-border);
    transition: background 0.15s ease, border-color 0.15s ease;
}

.knt-option-label:hover {
    background: color-mix(in srgb, var(--knt-accent) 5%, transparent);
    border-color: color-mix(in srgb, var(--knt-accent) 30%, var(--knt-border));
}

.knt-option-label input {
    accent-color: var(--knt-accent);
}

.knt-option-label.selected {
    background: color-mix(in srgb, var(--knt-accent) 8%, transparent);
    border-color: var(--knt-accent);
}

/* ── Rating ──────────────────────────────────────────────────────── */
.knt-rating {
    display: flex;
    gap: 0.25rem;
}

.knt-rating-star {
    width: 2rem;
    height: 2rem;
    cursor: pointer;
    color: var(--knt-border);
    transition: color 0.15s ease, transform 0.15s ease;
}

.knt-rating-star:hover,
.knt-rating-star.active {
    color: #f59e0b;
    transform: scale(1.1);
}

/* ── NPS ─────────────────────────────────────────────────────────── */
.knt-nps {
    display: flex;
    gap: 4px;
}

.knt-nps-btn {
    flex: 1;
    padding: 0.5rem;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--knt-font);
    border: 1px solid var(--knt-border);
    border-radius: var(--knt-radius);
    background: var(--knt-surface);
    color: var(--knt-text);
    cursor: pointer;
    transition: all 0.15s ease;
}

.knt-nps-btn:hover {
    border-color: var(--knt-accent);
}

.knt-nps-btn.selected {
    background: var(--knt-accent);
    border-color: var(--knt-accent);
    color: #ffffff;
}

/* ── File upload ─────────────────────────────────────────────────── */
.knt-file-drop {
    border: 2px dashed var(--knt-border);
    border-radius: var(--knt-radius);
    padding: 2rem;
    text-align: center;
    color: var(--knt-text-secondary);
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.knt-file-drop:hover,
.knt-file-drop.dragover {
    border-color: var(--knt-accent);
    background: color-mix(in srgb, var(--knt-accent) 5%, transparent);
}

.knt-file-drop input[type="file"] {
    display: none;
}

.knt-file-list {
    margin-top: 0.5rem;
    font-size: 0.8125rem;
}

.knt-file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.375rem 0;
    color: var(--knt-text);
}

.knt-file-remove {
    color: var(--knt-error);
    cursor: pointer;
    background: none;
    border: none;
    font-size: 0.875rem;
    padding: 0;
}

/* ── Error message ───────────────────────────────────────────────── */
.knt-field-error {
    font-size: 0.75rem;
    color: var(--knt-error);
    margin-top: 0.25rem;
}

/* ── Buttons ─────────────────────────────────────────────────────── */
.knt-buttons {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.knt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--knt-font);
    border-radius: var(--knt-radius);
    border: none;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease, opacity 0.2s ease;
}

.knt-btn:active {
    transform: scale(0.98);
}

.knt-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.knt-btn-primary {
    background: var(--knt-accent);
    color: #ffffff;
}

.knt-btn-primary:hover:not(:disabled) {
    filter: brightness(1.1);
}

.knt-btn-secondary {
    background: transparent;
    color: var(--knt-text);
    border: 1px solid var(--knt-border);
}

.knt-btn-secondary:hover:not(:disabled) {
    background: color-mix(in srgb, var(--knt-text) 5%, transparent);
}

/* ── Consent ─────────────────────────────────────────────────────── */
.knt-consent {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.75rem;
    border-radius: var(--knt-radius);
    border: 1px solid var(--knt-border);
    margin-top: 1rem;
    font-size: 0.8125rem;
    color: var(--knt-text-secondary);
}

.knt-consent input {
    margin-top: 2px;
    accent-color: var(--knt-accent);
}

/* ── Success state ───────────────────────────────────────────────── */
.knt-success {
    text-align: center;
    padding: 3rem 1.5rem;
}

.knt-success-icon {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background: color-mix(in srgb, var(--knt-success) 12%, transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
}

.knt-success-icon svg {
    width: 2rem;
    height: 2rem;
    color: var(--knt-success);
}

.knt-success h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--knt-text);
    margin: 0 0 0.5rem;
}

.knt-success p {
    color: var(--knt-text-secondary);
    margin: 0;
}

/* ── Powered by ──────────────────────────────────────────────────── */
.knt-powered-by {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.6875rem;
    color: var(--knt-text-secondary);
    opacity: 0.6;
}

.knt-powered-by a {
    color: var(--knt-accent);
    text-decoration: none;
}

.knt-powered-by a:hover {
    text-decoration: underline;
}

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 480px) {
    .knt-form-title { font-size: 1.25rem; }
    .knt-nps { flex-wrap: wrap; }
    .knt-nps-btn { flex: 0 0 calc(20% - 4px); }
    .knt-buttons { flex-direction: column; }
    .knt-btn { width: 100%; }
}