/* ==========================================================================
   Forms & Buttons
   Klassen-API bleibt unverändert: .form-group, .form-input, .form-select,
   .form-textarea, .form-row, .btn, .btn-primary …
   ========================================================================== */

/* ── Formulargruppe ──────────────────────────────────────────────────── */
.form-group {
    margin-bottom: var(--space-4);
}

.form-group > label,
.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--fs-13);
    font-weight: var(--fw-medium);
    color: var(--text-secondary);
}

.form-hint {
    margin-top: var(--space-1);
    font-size: var(--fs-12);
    color: var(--text-muted);
    line-height: var(--lh-snug);
}

.form-required {
    color: var(--danger);
    margin-left: 2px;
}

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

.form-input-sm {
    height: var(--control-h-sm);
    font-size: var(--fs-13);
}

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

.form-input:hover:not(:disabled):not(:focus),
.form-select:hover:not(:disabled):not(:focus),
.form-textarea:hover:not(:disabled):not(:focus) {
    border-color: var(--border-strong);
}

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

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

.form-input[readonly] {
    background: var(--surface-sunken);
    color: var(--text-secondary);
}

/* textarea.form-input: einige Formulare nutzen die Input-Klasse auch für
   mehrzeilige Felder – ohne das greift die feste Einzeilen-Höhe. */
.form-textarea,
textarea.form-input {
    height: auto;
    min-height: 96px;
    padding: var(--space-2) var(--control-px);
    resize: vertical;
    line-height: var(--lh-normal);
}

/* Native Select mit eigenem Pfeil */
.form-select {
    padding-right: var(--space-8);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    background-size: 16px;
}
[data-theme="dark"] .form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238a97ad' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
}
.form-select[multiple] {
    height: auto;
    padding: var(--space-2);
    background-image: none;
}

/* Fehlerzustand */
.form-input.error,
.form-select.error,
.form-textarea.error,
.form-input[aria-invalid="true"] {
    border-color: var(--danger);
}
.form-input.error:focus,
.form-select.error:focus,
.form-textarea.error:focus {
    box-shadow: 0 0 0 3px var(--danger-bg);
}

.form-error {
    display: block;
    margin-top: var(--space-1);
    font-size: var(--fs-12);
    color: var(--danger);
}
.form-error:empty {
    display: none;
}

/* Eingabefeld mit angehängten Aktionen (z. B. Passwort anzeigen/generieren) */
.input-actions {
    display: flex;
    gap: var(--space-2);
    align-items: stretch;
}
.input-actions > .form-input {
    flex: 1;
    min-width: 0;
}

/* Checkbox / Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--fs-14);
    color: var(--text-secondary);
}
.form-check input[type="checkbox"],
.form-check input[type="radio"],
input[type="checkbox"],
input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--brand);
    cursor: pointer;
    flex-shrink: 0;
}

/* Layout-Helfer */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}
.form-row-3 { grid-template-columns: repeat(3, 1fr); }

.form-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-2);
    margin-top: var(--space-5);
}

@media (max-width: 640px) {
    .form-row,
    .form-row-3 {
        grid-template-columns: 1fr;
        /* Einspaltig übernimmt der Abstand der .form-group selbst – sonst
           summieren sich Grid-Gap und margin-bottom zu doppeltem Abstand. */
        row-gap: 0;
    }

    /* iOS Safari zoomt beim Fokus in jedes Feld unter 16px – das verschiebt
       das Layout und muss danach von Hand zurückgezoomt werden. */
    .form-input,
    .form-select,
    .form-textarea,
    .form-input-sm {
        font-size: var(--fs-16);
    }
    .form-input:not(textarea),
    .form-select { height: var(--control-h-lg); }

    /* Inline gesetzte Mindestbreiten (min-width:220px o. Ä.) sprengen sonst
       schmale Viewports. */
    .form-select[style*="min-width"],
    .form-input[style*="min-width"] {
        min-width: 0 !important;
        width: 100%;
    }

    .btn { min-height: 40px; }
    .btn-sm { min-height: 36px; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: var(--control-h-md);
    padding: 0 var(--space-4);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: var(--fs-14);
    font-weight: var(--fw-medium);
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    text-decoration: none;
    transition: background-color var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}
.btn:hover { text-decoration: none; }
.btn:disabled,
.btn.disabled {
    opacity: 0.55;
    cursor: not-allowed;
    pointer-events: none;
}
.btn .icon { font-size: 16px; }

/* Varianten */
.btn-primary {
    background: var(--brand);
    border-color: var(--brand);
    color: var(--text-on-brand);
}
.btn-primary:hover:not(:disabled) {
    background: var(--brand-hover);
    border-color: var(--brand-hover);
    color: var(--text-on-brand);
}

.btn-secondary {
    background: var(--surface-raised);
    border-color: var(--border-default);
    color: var(--text-secondary);
}
.btn-secondary:hover:not(:disabled) {
    background: var(--surface-sunken);
    border-color: var(--border-strong);
    color: var(--text-primary);
}

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--text-secondary);
}
.btn-ghost:hover:not(:disabled) {
    background: var(--surface-sunken);
    color: var(--text-primary);
}

.btn-danger {
    background: var(--danger);
    border-color: var(--danger);
    color: #ffffff;
}
.btn-danger:hover:not(:disabled) {
    background: var(--danger-hover);
    border-color: var(--danger-hover);
    color: #ffffff;
}

.btn-danger-soft {
    background: var(--danger-bg);
    border-color: var(--danger-border);
    color: var(--danger-fg);
}
.btn-danger-soft:hover:not(:disabled) {
    background: var(--danger);
    border-color: var(--danger);
    color: #ffffff;
}

.btn-success {
    background: var(--success);
    border-color: var(--success);
    color: #ffffff;
}
.btn-success:hover:not(:disabled) { filter: brightness(0.93); color: #ffffff; }

.btn-info {
    background: var(--info);
    border-color: var(--info);
    color: #ffffff;
}
.btn-info:hover:not(:disabled) { filter: brightness(0.93); color: #ffffff; }

/* Größen */
.btn-sm {
    height: var(--control-h-sm);
    padding: 0 var(--space-3);
    font-size: var(--fs-13);
    gap: var(--space-1);
}
.btn-sm .icon { font-size: 14px; }

.btn-lg {
    height: var(--control-h-lg);
    padding: 0 var(--space-5);
    font-size: var(--fs-15);
}

.btn-icon {
    width: var(--control-h-md);
    padding: 0;
    flex-shrink: 0;
}
.btn-icon.btn-sm { width: var(--control-h-sm); }
.btn-icon.btn-lg { width: var(--control-h-lg); }

.btn-block { width: 100%; }

/* Buttongruppe */
.btn-group {
    display: inline-flex;
    align-items: center;
}
.btn-group .btn { border-radius: 0; }
.btn-group .btn:first-child {
    border-top-left-radius: var(--radius-sm);
    border-bottom-left-radius: var(--radius-sm);
}
.btn-group .btn:last-child {
    border-top-right-radius: var(--radius-sm);
    border-bottom-right-radius: var(--radius-sm);
}
.btn-group .btn + .btn { margin-left: -1px; }