/**
 * WP Smart Forms — Frontend Form Styles v3.0
 * Premium SaaS aesthetic — Typeform / Stripe inspired
 *
 * PURE CSS ONLY. Zero JS changes. Zero functionality changes.
 * All class names, IDs, data attributes PRESERVED.
 *
 * @package WPSmartForms
 * @since   1.2.0
 */

/* ══════════════════════════════════════════════════════
   DESIGN TOKENS — scoped to .wpsf-form-wrap
   Overridable by themes via CSS custom properties
   ══════════════════════════════════════════════════════ */
.wpsf-form-wrap {
    /* Brand */
    --wpsf-primary:        #4f46e5;
    --wpsf-primary-hover:  #4338ca;
    --wpsf-primary-light:  #eef2ff;
    --wpsf-primary-ring:   rgba(79,70,229,.18);

    /* Semantic */
    --wpsf-error:          #dc2626;
    --wpsf-error-bg:       #fef2f2;
    --wpsf-error-border:   #fca5a5;
    --wpsf-success:        #059669;
    --wpsf-success-bg:     #d1fae5;
    --wpsf-success-border: #6ee7b7;

    /* Neutrals & surfaces */
    --wpsf-form-bg:        transparent;
    --wpsf-card-bg:        #ffffff;
    --wpsf-section-bg:     #ffffff;
    --wpsf-bg:             #ffffff;
    --wpsf-input-bg:       #ffffff;
    --wpsf-text:           #0f172a;
    --wpsf-text-muted:     #64748b;
    --wpsf-label:          #1e293b;
    --wpsf-label-color:    #1e293b;
    --wpsf-help:           #64748b;
    --wpsf-placeholder:    #94a3b8;
    --wpsf-border:         #e2e8f0;
    --wpsf-border-hover:   #cbd5e1;
    --wpsf-border-focus:   #4f46e5;
    --wpsf-link:           #4f46e5;
    --wpsf-required-color: #dc2626;

    /* Buttons */
    --wpsf-btn-bg:         #4f46e5;
    --wpsf-btn-hover-bg:   #4338ca;
    --wpsf-btn-text:       #ffffff;
    --wpsf-btn-radius:     10px;
    --wpsf-btn-border-width: 0;
    --wpsf-btn-shadow:     0 4px 14px rgba(79,70,229,.35);
    --wpsf-btn-padding:    14px 32px;
    --wpsf-btn-font-size:  15px;
    --wpsf-btn-width:      auto;

    /* Container */
    --wpsf-container-max-width: 680px;
    --wpsf-container-padding:   0;
    --wpsf-container-margin:    0;
    --wpsf-container-radius:    0;
    --wpsf-container-shadow:    none;
    --wpsf-container-border:    none;
    --wpsf-container-bg:        transparent;

    /* Sections */
    --wpsf-section-header-bg:   #f8fafc;
    --wpsf-section-body-bg:     #ffffff;
    --wpsf-section-border:      1px solid #e2e8f0;
    --wpsf-section-radius:      12px;
    --wpsf-section-padding:     20px;
    --wpsf-section-inner-gap:   22px;
    --wpsf-section-heading-color: #1e293b;
    --wpsf-section-heading-size: 15px;
    --wpsf-section-accent:      #4f46e5;
    --wpsf-section-gap:         22px;

    /* Shape */
    --wpsf-radius:         10px;
    --wpsf-radius-sm:      6px;
    --wpsf-radius-lg:      16px;
    --wpsf-input-border-width: 2px;
    --wpsf-input-border-style: solid;
    --wpsf-input-padding:  12px 16px;
    --wpsf-input-height:   auto;

    /* Typography */
    --wpsf-font:           -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", sans-serif;
    --wpsf-font-size:      15px;
    --wpsf-font-weight:    400;
    --wpsf-letter-spacing: 0;
    --wpsf-line-height:    1.6;
    --wpsf-text-transform: none;
    --wpsf-label-size:     13px;
    --wpsf-label-weight:   700;
    --wpsf-label-align:    left;
    --wpsf-label-gap:      7px;
    --wpsf-help-size:      12px;
    --wpsf-description-gap: 7px;
    --wpsf-heading-size:   15px;

    /* Spacing */
    --wpsf-gap:            22px;
    --wpsf-gap-horizontal: 0;

    /* Shadows */
    --wpsf-shadow-input:   0 1px 2px rgba(15,23,42,.06);
    --wpsf-shadow-focus:   0 0 0 3px var(--wpsf-primary-ring), 0 1px 2px rgba(15,23,42,.04);

    /* Transition */
    --wpsf-ease:           .18s cubic-bezier(.4,0,.2,1);
}

/* ══════════════════════════════════════════════════════
   FORM WRAPPER
   ══════════════════════════════════════════════════════ */
.wpsf-form-wrap {
    font-family: var(--wpsf-font);
    font-size: var(--wpsf-font-size);
    font-weight: var(--wpsf-font-weight);
    letter-spacing: var(--wpsf-letter-spacing);
    line-height: var(--wpsf-line-height);
    text-transform: var(--wpsf-text-transform);
    color: var(--wpsf-text);
    max-width: var(--wpsf-container-max-width);
    padding: var(--wpsf-container-padding);
    margin: var(--wpsf-container-margin);
    border-radius: var(--wpsf-container-radius);
    box-shadow: var(--wpsf-container-shadow);
    border: var(--wpsf-container-border);
    background: var(--wpsf-container-bg, var(--wpsf-form-bg));
    box-sizing: border-box;
}

/* ✅ SAFE: .wpsf-form class referenced by JS — PRESERVED */
.wpsf-form {
    display: flex;
    flex-direction: column;
    gap: var(--wpsf-gap);
}

.wpsf-form.wpsf-submitting {
    opacity: .65;
    pointer-events: none;
    transition: opacity .25s;
}

/* ══════════════════════════════════════════════════════
   LAYOUT GRID (v1.3.0)
   12-column responsive grid — Gravity Forms compatible widths
   ══════════════════════════════════════════════════════ */
.wpsf-form.wpsf-layout-enabled,
.wpsf-section-body.wpsf-layout-enabled {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--wpsf-col-gap, var(--wpsf-gap));
    row-gap: var(--wpsf-row-gap, var(--wpsf-gap));
    align-items: start;
}

/* Full-width rows: sections, submit, honeypot */
.wpsf-form.wpsf-layout-enabled > .wpsf-section,
.wpsf-form.wpsf-layout-enabled > .wpsf-submit-wrap {
    grid-column: 1 / -1;
}

.wpsf-layout-enabled > .wpsf-field-wrap,
.wpsf-layout-enabled > .wpsf-repeater {
    grid-column: span var(--wpsf-span-desktop, 12);
    min-width: 0;
}

/* Auto width — shrink to content on the row */
.wpsf-layout-enabled > .wpsf-field-wrap.wpsf-span-desktop-auto,
.wpsf-layout-enabled > .wpsf-repeater.wpsf-span-desktop-auto {
    grid-column: auto;
    max-width: 100%;
}

@media (max-width: 782px) {
    .wpsf-layout-enabled > .wpsf-field-wrap,
    .wpsf-layout-enabled > .wpsf-repeater {
        grid-column: span var(--wpsf-span-tablet, var(--wpsf-span-desktop, 12));
    }

    .wpsf-layout-enabled > .wpsf-field-wrap.wpsf-span-tablet-auto,
    .wpsf-layout-enabled > .wpsf-repeater.wpsf-span-tablet-auto {
        grid-column: auto;
        max-width: 100%;
    }
}

@media (max-width: 600px) {
    .wpsf-layout-enabled > .wpsf-field-wrap,
    .wpsf-layout-enabled > .wpsf-repeater {
        grid-column: span var(--wpsf-span-mobile, var(--wpsf-span-tablet, var(--wpsf-span-desktop, 12)));
    }

    .wpsf-layout-enabled > .wpsf-field-wrap.wpsf-span-mobile-auto,
    .wpsf-layout-enabled > .wpsf-repeater.wpsf-span-mobile-auto {
        grid-column: auto;
        max-width: 100%;
    }
}

/* ══════════════════════════════════════════════════════
   MESSAGES
   ══════════════════════════════════════════════════════ */
.wpsf-success-message {
    background: var(--wpsf-success-bg);
    border: 1px solid var(--wpsf-success-border);
    border-left: 4px solid var(--wpsf-success);
    color: #065f46;
    border-radius: var(--wpsf-radius);
    padding: 20px 22px;
    font-size: var(--wpsf-font-size, 15px);
    font-weight: 500;
    line-height: 1.55;
    display: none;
    align-items: center;
    gap: 16px;
    width: 100%;
    box-sizing: border-box;
    animation: wpsf-fade-up .4s cubic-bezier(.4,0,.2,1) both;
}

.wpsf-success-message[hidden] {
    display: none !important;
}

.wpsf-success-message.is-visible {
    display: flex;
}

@keyframes wpsf-fade-up {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ✅ SAFE: animated SVG injected by JS into this element — PRESERVED */
.wpsf-success-icon {
    flex: 0 0 40px;
    width: 40px;
    height: 40px;
    display: block;
    color: var(--wpsf-success);
}

.wpsf-success-text {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 1.05em;
    font-weight: 600;
    line-height: 1.5;
    word-break: normal;
    overflow-wrap: anywhere;
}
.wpsf-check-circle {
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
    animation: wpsf-draw .5s .1s ease-out forwards;
}
.wpsf-check-mark {
    stroke-dasharray: 30;
    stroke-dashoffset: 30;
    animation: wpsf-draw .35s .5s ease-out forwards;
}
@keyframes wpsf-draw { to { stroke-dashoffset: 0; } }

.wpsf-form-errors {
    background: var(--wpsf-error-bg);
    border: 1px solid var(--wpsf-error-border);
    border-left: 4px solid var(--wpsf-error);
    color: #7f1d1d;
    border-radius: var(--wpsf-radius);
    padding: 14px 18px;
    font-size: 13px;
    font-weight: 500;
    animation: wpsf-fade-up .2s ease-out;
}

/* ══════════════════════════════════════════════════════
   FIELD WRAPPER
   ══════════════════════════════════════════════════════ */

/* ✅ SAFE: .wpsf-field-wrap, data-field-key — used by JS — PRESERVED */
.wpsf-field-wrap,
.wpsf-field-wrap fieldset {
    border: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--wpsf-label-gap, 7px);
}

/* Error state — accent on left */
.wpsf-field-wrap.wpsf-field-has-error {
    padding-left: 14px;
    margin-left: -18px;
    border-left: 4px solid var(--wpsf-error);
}

/* ══════════════════════════════════════════════════════
   LABELS
   ══════════════════════════════════════════════════════ */
.wpsf-field-label,
.wpsf-field-wrap legend.wpsf-field-label {
    display: block;
    font-size: var(--wpsf-label-size);
    font-weight: var(--wpsf-label-weight);
    color: var(--wpsf-label-color, var(--wpsf-label));
    letter-spacing: var(--wpsf-letter-spacing);
    text-align: var(--wpsf-label-align, left);
}

.wpsf-required {
    color: var(--wpsf-required-color, var(--wpsf-error));
    margin-left: 2px;
    font-size: 15px;
    line-height: 1;
}

/* ══════════════════════════════════════════════════════
   TEXT INPUTS, TEXTAREA, SELECT
   ══════════════════════════════════════════════════════ */

/* ✅ SAFE: .wpsf-input, .wpsf-textarea, .wpsf-select — JS reads .value — PRESERVED */
.wpsf-input,
.wpsf-textarea,
.wpsf-select {
    display: block;
    width: 100%;
    padding: var(--wpsf-input-padding);
    min-height: var(--wpsf-input-height);
    font-size: var(--wpsf-font-size);
    font-family: var(--wpsf-font);
    color: var(--wpsf-text);
    background-color: var(--wpsf-input-bg, var(--wpsf-bg));
    border: var(--wpsf-input-border-width) var(--wpsf-input-border-style) var(--wpsf-border);
    border-radius: var(--wpsf-radius);
    box-sizing: border-box;
    transition: border-color var(--wpsf-ease), box-shadow var(--wpsf-ease), background-color var(--wpsf-ease);
    -webkit-appearance: none;
    appearance: none;
    box-shadow: var(--wpsf-shadow-input);
    line-height: 1.5;
}

.wpsf-input:hover,
.wpsf-textarea:hover,
.wpsf-select:hover {
    border-color: var(--wpsf-border-hover);
}

.wpsf-input:focus,
.wpsf-textarea:focus,
.wpsf-select:focus {
    outline: none;
    border-color: var(--wpsf-border-focus);
    box-shadow: var(--wpsf-shadow-focus);
    background-color: #fff;
}

.wpsf-input::placeholder,
.wpsf-textarea::placeholder {
    color: var(--wpsf-placeholder);
    font-weight: 400;
}

/* ✅ SAFE: .wpsf-has-error — set by JS on validation fail — class PRESERVED */
.wpsf-input.wpsf-has-error,
.wpsf-textarea.wpsf-has-error,
.wpsf-select.wpsf-has-error {
    border-color: var(--wpsf-error);
    background-color: #fff8f8;
}

.wpsf-input.wpsf-has-error:focus,
.wpsf-textarea.wpsf-has-error:focus,
.wpsf-select.wpsf-has-error:focus {
    box-shadow: 0 0 0 3px rgba(220,38,38,.15), 0 1px 2px rgba(15,23,42,.04);
}

/* Valid state */
.wpsf-input.wpsf-valid,
.wpsf-textarea.wpsf-valid,
.wpsf-select.wpsf-valid {
    border-color: var(--wpsf-success);
}

.wpsf-textarea {
    resize: vertical;
    min-height: 130px;
    line-height: 1.6;
}

/* Select — custom chevron */
.wpsf-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%2394a3b8' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 12px;
    padding-right: 40px;
    cursor: pointer;
}

.wpsf-select:focus {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%234f46e5' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 12px;
}

/* ══════════════════════════════════════════════════════
   RADIO & CHECKBOX
   ══════════════════════════════════════════════════════ */
.wpsf-radio-group,
.wpsf-checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.wpsf-radio-label,
.wpsf-checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-weight: 400;
    font-size: 15px;
    color: var(--wpsf-text);
    padding: 10px 14px;
    border: 2px solid var(--wpsf-border);
    border-radius: var(--wpsf-radius);
    transition: all var(--wpsf-ease);
    user-select: none;
    background: var(--wpsf-bg);
}

.wpsf-radio-label:hover,
.wpsf-checkbox-label:hover {
    border-color: var(--wpsf-primary);
    background: var(--wpsf-primary-light);
}

.wpsf-radio-label:has(input:checked),
.wpsf-checkbox-label:has(input:checked) {
    border-color: var(--wpsf-primary);
    background: var(--wpsf-primary-light);
    color: var(--wpsf-primary);
    font-weight: 600;
}

.wpsf-radio-label input[type="radio"],
.wpsf-checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    cursor: pointer;
    accent-color: var(--wpsf-primary);
}

/* ══════════════════════════════════════════════════════
   FILE UPLOAD
   ══════════════════════════════════════════════════════ */

/* ✅ SAFE: .wpsf-file-input — JS reads .files — PRESERVED (only visual wrapper added) */
.wpsf-file-input {
    display: block;
    width: 100%;
    padding: 36px 20px;
    font-size: 14px;
    cursor: pointer;
    border: 2px dashed var(--wpsf-border);
    border-radius: var(--wpsf-radius);
    background: var(--wpsf-bg);
    text-align: center;
    color: var(--wpsf-text-muted);
    transition: all var(--wpsf-ease);
    font-family: var(--wpsf-font);
    box-sizing: border-box;
}

.wpsf-file-input:hover,
.wpsf-file-input:focus {
    border-color: var(--wpsf-primary);
    background: var(--wpsf-primary-light);
    color: var(--wpsf-primary);
    outline: none;
}

/* File hint */
.wpsf-file-hint {
    font-size: 12px;
    color: var(--wpsf-help);
    margin-top: 6px;
    line-height: 1.4;
}

/* ══════════════════════════════════════════════════════
   HELP TEXT & ERRORS
   ══════════════════════════════════════════════════════ */
.wpsf-field-help {
    display: block;
    font-size: var(--wpsf-help-size);
    color: var(--wpsf-help);
    line-height: 1.5;
    margin-top: var(--wpsf-description-gap, 0);
}

/* ✅ SAFE: .wpsf-field-error — JS sets textContent — PRESERVED */
.wpsf-field-error {
    display: block;
    font-size: 12px;
    color: var(--wpsf-error);
    font-weight: 700;
    min-height: 1em;
    line-height: 1.4;
    letter-spacing: .1px;
}

.wpsf-field-error:not(:empty)::before {
    content: "⚠ ";
    font-size: 11px;
}

/* ══════════════════════════════════════════════════════
   SUBMIT BUTTON
   ══════════════════════════════════════════════════════ */
.wpsf-submit-wrap { margin-top: 4px; }

/* ✅ SAFE: .wpsf-submit-btn, .wpsf-btn-text, .wpsf-loading, .wpsf-spinner — JS touches these — PRESERVED */
.wpsf-submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: var(--wpsf-btn-padding);
    background: var(--wpsf-btn-bg, var(--wpsf-primary));
    color: var(--wpsf-btn-text, #fff);
    border: var(--wpsf-btn-border-width) solid transparent;
    border-radius: var(--wpsf-btn-radius, var(--wpsf-radius));
    font-size: var(--wpsf-btn-font-size, var(--wpsf-font-size));
    font-weight: 700;
    font-family: var(--wpsf-font);
    cursor: pointer;
    transition: all var(--wpsf-ease);
    line-height: 1;
    box-shadow: var(--wpsf-btn-shadow);
    letter-spacing: .1px;
    position: relative;
    min-width: 130px;
    width: var(--wpsf-btn-width, auto);
}

.wpsf-submit-btn:hover:not(:disabled) {
    background: var(--wpsf-btn-hover-bg, var(--wpsf-primary-hover));
    box-shadow: var(--wpsf-btn-shadow);
    transform: translateY(-2px);
}

.wpsf-submit-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(79,70,229,.3);
}

.wpsf-submit-btn:disabled,
.wpsf-submit-btn.wpsf-loading {
    opacity: .75;
    cursor: not-allowed;
    transform: none !important;
}

.wpsf-submit-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--wpsf-primary-ring), 0 4px 14px rgba(79,70,229,.3);
}

/* CSS spinner — replaces emoji */
.wpsf-spinner {
    display: none;
    width: 15px;
    height: 15px;
    border: 2px solid rgba(255,255,255,.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: wpsf-spin .7s linear infinite;
    flex-shrink: 0;
}

.wpsf-submit-btn.wpsf-loading .wpsf-spinner { display: block; }

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

/* ══════════════════════════════════════════════════════
   CONDITIONAL LOGIC (hidden fields)
   ✅ SAFE: .wpsf-field-hidden-by-logic — set by JS — PRESERVED
   ══════════════════════════════════════════════════════ */
.wpsf-field-hidden-by-logic {
    display: none !important;
    animation: none !important;
}

/* ══════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════ */
@media (max-width: 600px) {
    .wpsf-form-wrap {
        /* Prevent iOS zoom on input focus — must be 16px+ */
        --wpsf-font-size: 16px;
    }

    .wpsf-input,
    .wpsf-textarea,
    .wpsf-select,
    .wpsf-file-input {
        font-size: 16px;
    }

    .wpsf-submit-btn {
        width: 100%;
    }

    .wpsf-radio-label,
    .wpsf-checkbox-label {
        padding: 12px;
    }
}

/* ══════════════════════════════════════════════════════
   ACCESSIBILITY
   ══════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
    .wpsf-input,
    .wpsf-textarea,
    .wpsf-select,
    .wpsf-submit-btn,
    .wpsf-radio-label,
    .wpsf-checkbox-label {
        transition: none;
    }

    .wpsf-submit-btn:hover { transform: none; }
    .wpsf-spinner { animation: none; }
    .wpsf-check-circle, .wpsf-check-mark { animation: none; stroke-dashoffset: 0; }
}

@media (forced-colors: active) {
    .wpsf-input,
    .wpsf-textarea,
    .wpsf-select {
        border: 2px solid ButtonText;
    }

    .wpsf-submit-btn {
        background: ButtonFace;
        color: ButtonText;
        border: 2px solid ButtonText;
    }
}

/* ══════════════════════════════════════════════════════
   SECTIONS (v1.1.0)
   .wpsf-section wraps a heading + its grouped fields.
   data-field-key on <section> enables conditional logic
   targeting via the same querySelector pattern as fields.
   ══════════════════════════════════════════════════════ */

.wpsf-section {
    border: var(--wpsf-section-border);
    border-radius: var(--wpsf-section-radius, calc(var(--wpsf-radius) + 2px));
    border-left: 3px solid var(--wpsf-section-accent, var(--wpsf-primary));
    overflow: hidden;
    margin-bottom: var(--wpsf-section-gap, 0);
}

.wpsf-section-header {
    background: var(--wpsf-section-header-bg, linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%));
    border-bottom: 1px solid var(--wpsf-border);
    padding: 14px 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.wpsf-section-title {
    font-size: var(--wpsf-section-heading-size, var(--wpsf-heading-size));
    font-weight: 700;
    color: var(--wpsf-section-heading-color, var(--wpsf-label));
    margin: 0;
    letter-spacing: -.15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.wpsf-section-desc {
    font-size: 13px;
    color: var(--wpsf-help);
    margin: 0;
    line-height: 1.5;
}

/* Optional icon before title */
.wpsf-section-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    font-size: 16px;
    flex-shrink: 0;
}

/* Section body — contains the fields */
.wpsf-section-body {
    padding: var(--wpsf-section-padding);
    display: flex;
    flex-direction: column;
    gap: var(--wpsf-section-inner-gap, var(--wpsf-gap));
    background: var(--wpsf-section-body-bg, var(--wpsf-section-bg, var(--wpsf-bg)));
}

/* Collapsed / hidden by conditional logic */
.wpsf-section.wpsf-field-hidden-by-logic {
    display: none !important;
}

/* Responsive */
@media (max-width: 600px) {
    .wpsf-section-header {
        padding: 12px 14px;
    }

    .wpsf-section-body {
        padding: 14px;
    }
}