/* ==========================================================================
   Forms — fields, inputs, textarea, select, checkbox, radio, range
   Default control height: 36px (var(--control-h-md))
   ========================================================================== */

/* ── Field wrapper (label + input + hint/error) ──────────────────────── */
.field, .form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    margin-bottom: var(--space-4);
}
.field:last-child, .form-group:last-child { margin-bottom: 0; }

/* ── Shared filter bars (module list filters) ───────────────────────── */
.filter-bar {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    align-items: flex-end;
}
.filter-bar .field {
    margin: 0;
}
.filter-grow {
    flex: 1 1 200px;
    min-width: 180px;
}
.filter-actions {
    margin-left: auto;
    display: flex;
    gap: var(--space-2);
    align-items: flex-end;
}

.field-label, .form-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--fs-13);
    font-weight: var(--fw-medium);
    color: var(--text-secondary);
    line-height: 1.4;
}
.field-label .required, .form-label .required {
    color: var(--danger);
    font-weight: var(--fw-semibold);
}

.field-hint, .form-hint {
    font-size: var(--fs-12);
    color: var(--text-muted);
    line-height: 1.4;
}

.field-error, .form-error {
    font-size: var(--fs-12);
    color: var(--danger);
    line-height: 1.4;
}

/* ── Inputs / textarea / select base ─────────────────────────────────── */
.form-input,
.form-textarea,
.form-select,
.form-control {
    display: block;
    width: 100%;
    height: var(--control-h-md);
    padding: 0 var(--control-px);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-default);
    background: var(--surface-raised);
    color: var(--text-primary);
    font-family: inherit;
    font-size: var(--fs-14);
    line-height: 1.4;
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}

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

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

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
    background: var(--surface-sunken);
    color: var(--text-disabled);
    cursor: not-allowed;
}

.form-input.is-invalid,
.form-textarea.is-invalid,
.form-select.is-invalid,
.field.is-invalid .form-input,
.field.is-invalid .form-textarea,
.field.is-invalid .form-select {
    border-color: var(--danger);
}
.form-input.is-invalid:focus,
.form-textarea.is-invalid:focus,
.form-select.is-invalid:focus {
    box-shadow: 0 0 0 3px var(--danger-bg);
}

/* ── Textarea ────────────────────────────────────────────────────────── */
.form-textarea {
    height: auto;
    min-height: 96px;
    padding: var(--space-2) var(--control-px);
    resize: vertical;
    line-height: var(--lh-normal);
}

/* ── Select with custom chevron ──────────────────────────────────────── */
.form-select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2374706a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    background-size: 16px;
    padding-right: calc(var(--control-px) + 24px);
}
[data-theme="dark"] .form-select,
@media (prefers-color-scheme: dark) {
    .form-select {
        background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23998f80' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
    }
}

/* ── Sizes ───────────────────────────────────────────────────────────── */
.form-input-sm,
.form-select-sm {
    height: var(--control-h-sm);
    font-size: var(--fs-13);
    padding: 0 var(--space-2);
}
.form-input-lg,
.form-select-lg {
    height: var(--control-h-lg);
    font-size: var(--fs-15);
    padding: 0 var(--space-4);
}

/* ── Input group (prefix / suffix slots) ─────────────────────────────── */
.input-group {
    display: flex;
    align-items: stretch;
    width: 100%;
}
.input-group > .form-input,
.input-group > .form-select {
    border-radius: 0;
    flex: 1;
    min-width: 0;
}
.input-group > :first-child {
    border-top-left-radius: var(--radius-sm);
    border-bottom-left-radius: var(--radius-sm);
}
.input-group > :last-child {
    border-top-right-radius: var(--radius-sm);
    border-bottom-right-radius: var(--radius-sm);
}
.input-group > * + * { margin-left: -1px; }

.input-addon {
    display: inline-flex;
    align-items: center;
    padding: 0 var(--space-3);
    background: var(--surface-sunken);
    border: 1px solid var(--border-default);
    color: var(--text-muted);
    font-size: var(--fs-13);
    white-space: nowrap;
}
.input-addon .icon { font-size: 16px; }

.input-group:focus-within > .form-input,
.input-group:focus-within > .form-select,
.input-group:focus-within > .input-addon {
    border-color: var(--border-focus);
}

/* ── Input with leading/trailing icon (single-input variant) ─────────── */
.input-icon-wrap {
    position: relative;
    display: block;
    width: 100%;
}
.input-icon-wrap > .icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    font-size: 16px;
}
.input-icon-wrap > .icon.input-icon-leading { left: var(--space-3); }
.input-icon-wrap > .icon.input-icon-trailing { right: var(--space-3); }
.input-icon-wrap > .form-input.has-icon-leading { padding-left: calc(var(--control-px) + 24px); }
.input-icon-wrap > .form-input.has-icon-trailing { padding-right: calc(var(--control-px) + 24px); }

/* ── Checkbox & radio (custom) ───────────────────────────────────────── */
.form-check {
    display: inline-flex;
    align-items: flex-start;
    gap: var(--space-2);
    cursor: pointer;
    line-height: 1.4;
    font-size: var(--fs-14);
    color: var(--text-primary);
    user-select: none;
}
.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    margin: 1px 0 0 0;
    flex-shrink: 0;
    border: 1px solid var(--border-strong);
    background: var(--surface-raised);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: border-color var(--duration-fast) var(--ease-out),
                background-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}
.form-check input[type="checkbox"] { border-radius: var(--radius-xs); }
.form-check input[type="radio"]    { border-radius: 50%; }

.form-check input:hover { border-color: var(--brand); }

.form-check input:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.form-check input[type="checkbox"]:checked {
    background: var(--brand);
    border-color: var(--brand);
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
    background-position: center;
    background-repeat: no-repeat;
    background-size: 12px;
}
.form-check input[type="radio"]:checked {
    border-color: var(--brand);
    background: radial-gradient(var(--brand) 0 40%, var(--surface-raised) 45% 100%);
}

.form-check input:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

/* ── Switch (toggle) ─────────────────────────────────────────────────── */
.form-switch {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    user-select: none;
    font-size: var(--fs-14);
}
.form-switch input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 36px;
    height: 20px;
    background: var(--neutral-300);
    border-radius: var(--radius-pill);
    position: relative;
    cursor: pointer;
    transition: background-color var(--duration-fast) var(--ease-out);
    flex-shrink: 0;
}
.form-switch input[type="checkbox"]::after {
    content: '';
    position: absolute;
    top: 2px; left: 2px;
    width: 16px; height: 16px;
    background: #fff;
    border-radius: 50%;
    box-shadow: var(--shadow-xs);
    transition: transform var(--duration-fast) var(--ease-out);
}
.form-switch input[type="checkbox"]:checked {
    background: var(--brand);
}
.form-switch input[type="checkbox"]:checked::after {
    transform: translateX(16px);
}
.form-switch input[type="checkbox"]:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

/* ── Range slider ────────────────────────────────────────────────────── */
.form-range {
    width: 100%;
    height: 4px;
    background: var(--surface-sunken);
    border-radius: var(--radius-pill);
    appearance: none;
    -webkit-appearance: none;
    outline: none;
}
.form-range::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 18px; height: 18px;
    background: var(--brand);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--surface-raised);
    box-shadow: var(--shadow-xs);
}
.form-range::-moz-range-thumb {
    width: 18px; height: 18px;
    background: var(--brand);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--surface-raised);
    box-shadow: var(--shadow-xs);
}

/* ── Form layouts ────────────────────────────────────────────────────── */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}
.form-row .form-group { margin-bottom: 0; }

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    margin-top: var(--space-5);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}
.form-actions.justify-start { justify-content: flex-start; }
.form-actions.justify-between { justify-content: space-between; }

/* ── Floating-label variant ──────────────────────────────────────────── */
.field-floating {
    position: relative;
}
.field-floating .form-input,
.field-floating .form-textarea {
    padding-top: var(--space-4);
}
.field-floating .form-label {
    position: absolute;
    left: var(--control-px);
    top: 50%;
    transform: translateY(-50%);
    transition: transform var(--duration-fast) var(--ease-out),
                font-size var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
    color: var(--text-muted);
    pointer-events: none;
}
.field-floating .form-input:focus + .form-label,
.field-floating .form-input:not(:placeholder-shown) + .form-label {
    transform: translateY(-150%);
    font-size: var(--fs-12);
    color: var(--text-secondary);
}