/**
 * Core Forms — Default Form Theme
 *
 * Semantic, classless-first CSS that styles HTML form elements
 * inside .cf-form without requiring specific class names on fields.
 * Can be disabled per-form or globally via settings.
 *
 * Design tokens mirror the marketing site at core-forms.com so the
 * default form looks like the same product everywhere.
 */

/* ── Base form ── */
.cf-form {
    /* Inherit the host theme's font by default — no webfont, no system override. */
    --cf-font: inherit;

    /* Ink (neutrals) */
    --cf-text:        #0f172a;
    --cf-text-soft:   #334155;
    --cf-text-light:  #64748b;
    --cf-text-muted:  #94a3b8;

    /* Surfaces */
    --cf-bg:          #ffffff;
    --cf-bg-soft:     #f7f9fc;

    /* Borders */
    --cf-border:        #cbd5e1;
    --cf-border-light:  #e2e8f0;

    /* Brand */
    --cf-brand:         #2f63f5;
    --cf-brand-hover:   #1f4de0;
    --cf-brand-soft:    #eef3ff;
    --cf-brand-border:  #dbe6ff;

    /* Status */
    --cf-error:         #ef4444;
    --cf-error-soft:    #fef2f2;
    --cf-error-border:  #fecaca;
    --cf-success:       #16a34a;
    --cf-success-soft:  #f0fdf4;
    --cf-success-border:#bbf7d0;
    --cf-warning:       #f59e0b;
    --cf-warning-soft:  #fffbeb;
    --cf-warning-border:#fde68a;

    /* Focus ring (matches marketing site --ring) */
    --cf-focus:         var(--cf-brand);
    --cf-focus-shadow:  0 0 0 4px rgba(47, 99, 245, .18);

    /* Shape */
    --cf-radius:        8px;
    --cf-radius-sm:     6px;
    --cf-radius-lg:     12px;

    /* Rhythm */
    --cf-spacing:       20px;
    --cf-input-padding: 11px 14px;

    /* Shadows */
    --cf-shadow-input:  0 1px 2px rgba(15, 23, 42, .04);
    --cf-shadow-button: 0 4px 12px rgba(47, 99, 245, .25);

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

/* ── Labels ── */
.cf-form label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 6px;
    color: var(--cf-text);
    letter-spacing: -0.005em;
}

/* Inline labels for checkboxes/radios */
.cf-form label:has(input[type="checkbox"]),
.cf-form label:has(input[type="radio"]) {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    cursor: pointer;
    color: var(--cf-text-soft);
}

/* Adjacent labels (radio/checkbox groups) */
.cf-form label + label {
    font-weight: 400;
}

/* ── Text inputs ── */
.cf-form input[type="text"],
.cf-form input[type="email"],
.cf-form input[type="url"],
.cf-form input[type="tel"],
.cf-form input[type="number"],
.cf-form input[type="password"],
.cf-form input[type="date"],
.cf-form input[type="time"],
.cf-form input[type="datetime-local"],
.cf-form input[type="search"],
.cf-form input[type="color"],
.cf-form input[type="range"],
.cf-form select,
.cf-form textarea {
    display: block;
    width: 100%;
    padding: var(--cf-input-padding);
    font-family: var(--cf-font);
    font-size: 15px;
    line-height: 1.5;
    color: var(--cf-text);
    background: var(--cf-bg);
    border: 1px solid var(--cf-border-light);
    border-radius: var(--cf-radius);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
    box-sizing: border-box;
    box-shadow: var(--cf-shadow-input);
    -webkit-appearance: none;
    appearance: none;
}

.cf-form input::placeholder,
.cf-form textarea::placeholder {
    color: var(--cf-text-muted);
}

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

.cf-form input:focus,
.cf-form select:focus,
.cf-form textarea:focus {
    outline: none;
    border-color: var(--cf-focus);
    box-shadow: var(--cf-focus-shadow);
}

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

.cf-form select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%2364748b'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    /* Logical position so the chevron flips for RTL languages. */
    background-position: inline-end 14px center;
    padding-inline-end: 36px;
    cursor: pointer;
}

/* RTL fallback for browsers that don't yet honour `inline-end` for
   background-position (older Safari). */
[dir="rtl"] .cf-form select {
    background-position: left 14px center;
    padding-right: 0;
    padding-left: 36px;
}

/* ── Checkboxes & radios ── */
.cf-form input[type="checkbox"],
.cf-form input[type="radio"] {
    width: 18px;
    height: 18px;
    margin: 0;
    flex-shrink: 0;
    accent-color: var(--cf-brand);
    cursor: pointer;
}

/* ── File input ── */
.cf-form input[type="file"] {
    display: block;
    width: 100%;
    padding: 14px;
    font-size: 14px;
    color: var(--cf-text-soft);
    background: var(--cf-bg-soft);
    border: 1px dashed var(--cf-border);
    border-radius: var(--cf-radius);
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.cf-form input[type="file"]:hover {
    border-color: var(--cf-brand);
    background: var(--cf-brand-soft);
}

/* ── Paragraphs as field wrappers ── */
.cf-form p {
    margin: 0 0 var(--cf-spacing);
}

.cf-form p:last-child {
    margin-bottom: 0;
}

/* ── Fieldset ── */
.cf-form fieldset {
    border: 1px solid var(--cf-border-light);
    border-radius: var(--cf-radius-lg);
    padding: 20px 24px;
    margin: 0 0 var(--cf-spacing);
    background: var(--cf-bg);
}

.cf-form fieldset legend {
    font-weight: 600;
    font-size: 14px;
    padding: 0 8px;
    color: var(--cf-text);
}

.cf-form fieldset label {
    margin-bottom: 8px;
}

.cf-form fieldset label:last-child {
    margin-bottom: 0;
}

/* ── Buttons ── */
.cf-form button[type="submit"],
.cf-form input[type="submit"],
.cf-form .cf-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 22px;
    font-family: var(--cf-font);
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    color: #fff;
    background: var(--cf-brand);
    border: 1px solid transparent;
    border-radius: var(--cf-radius);
    cursor: pointer;
    transition: background 0.2s ease, transform 0.12s ease, box-shadow 0.2s ease;
    -webkit-appearance: none;
    appearance: none;
    box-shadow: 0 1px rgba(255, 255, 255, .2) inset, var(--cf-shadow-button);
    text-decoration: none;
    letter-spacing: -0.005em;
}

.cf-form button[type="submit"]:hover,
.cf-form input[type="submit"]:hover {
    background: var(--cf-brand-hover);
    transform: translateY(-1px);
    box-shadow: 0 1px rgba(255, 255, 255, .2) inset, 0 6px 16px rgba(47, 99, 245, .32);
}

.cf-form button[type="submit"]:active,
.cf-form input[type="submit"]:active {
    transform: translateY(0);
}

.cf-form button[type="submit"]:focus-visible,
.cf-form input[type="submit"]:focus-visible {
    outline: none;
    box-shadow: 0 1px rgba(255, 255, 255, .2) inset, var(--cf-shadow-button), var(--cf-focus-shadow);
}

.cf-form button[type="submit"]:disabled,
.cf-form input[type="submit"]:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

/* Secondary buttons (e.g. multi-step "back") */
.cf-form button[type="button"],
.cf-form .cf-step-prev {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    font-family: var(--cf-font);
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    color: var(--cf-text);
    background: var(--cf-bg);
    border: 1px solid var(--cf-border-light);
    border-radius: var(--cf-radius);
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
    box-shadow: var(--cf-shadow-input);
}

.cf-form button[type="button"]:hover,
.cf-form .cf-step-prev:hover {
    border-color: var(--cf-border);
    background: var(--cf-bg-soft);
}

/* ── Small / help text ── */
.cf-form small,
.cf-form .description {
    display: block;
    margin-top: 6px;
    font-size: 13px;
    color: var(--cf-text-light);
    line-height: 1.5;
}

/* ── Required indicator ── */
.cf-form .cf-required,
.cf-form abbr[title] {
    color: var(--cf-error);
    text-decoration: none;
    font-weight: 500;
    margin-inline-start: 2px;
}

/* ── Headings inside forms ── */
.cf-form h2,
.cf-form h3,
.cf-form h4 {
    margin: var(--cf-spacing) 0 12px;
    line-height: 1.25;
    color: var(--cf-text);
    letter-spacing: -0.012em;
}

.cf-form h2 { font-size: 22px; font-weight: 700; }
.cf-form h3 { font-size: 18px; font-weight: 600; }
.cf-form h4 { font-size: 15px; font-weight: 600; }

.cf-form h2:first-child,
.cf-form h3:first-child,
.cf-form h4:first-child {
    margin-top: 0;
}

/* ── Dividers ── */
.cf-form hr {
    border: none;
    border-top: 1px solid var(--cf-border-light);
    margin: var(--cf-spacing) 0;
}

/* ── Messages ── */
.cf-form .cf-messages {
    margin-bottom: var(--cf-spacing);
}

.cf-form .cf-message {
    padding: 14px 16px;
    border-radius: var(--cf-radius);
    font-size: 14px;
    line-height: 1.5;
    border: 1px solid transparent;
}

.cf-form .cf-message-success {
    background: var(--cf-success-soft);
    border-color: var(--cf-success-border);
    color: #14532d;
}

.cf-form .cf-message-error {
    background: var(--cf-error-soft);
    border-color: var(--cf-error-border);
    color: #7f1d1d;
}

.cf-form .cf-message-warning {
    background: var(--cf-warning-soft);
    border-color: var(--cf-warning-border);
    color: #78350f;
}

/* ── Inline validation ── */
.cf-form .cf-invalid {
    border-color: var(--cf-error) !important;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, .15) !important;
}

.cf-form .cf-field-error {
    display: block;
    margin-top: 6px;
    font-size: 13px;
    color: var(--cf-error);
    line-height: 1.4;
    font-weight: 500;
}

/* ── Multi-step overrides ── */
.cf-form .cf-progress {
    margin-bottom: var(--cf-spacing);
}

.cf-form .cf-step-nav {
    margin-top: var(--cf-spacing);
    padding-top: 20px;
    border-top: 1px solid var(--cf-border-light);
    display: flex;
    gap: 12px;
    align-items: center;
}

/* ── Closed form ── */
.cf-form-closed {
    padding: 32px;
    text-align: center;
    background: var(--cf-bg-soft);
    border: 1px solid var(--cf-border-light);
    border-radius: var(--cf-radius-lg);
    color: var(--cf-text-light);
    font-size: 15px;
}

/* ── Responsive ── */
@media (max-width: 480px) {
    .cf-form {
        --cf-spacing: 16px;
    }

    .cf-form button[type="submit"],
    .cf-form input[type="submit"] {
        width: 100%;
    }
}