/* ==========================================================================
   Nexus Terminal — Profile Editor & Form Polish
   Section headers, grouped fields, protocol-specific visibility,
   inline validation, tag input, jump host list, key file selector.
   ========================================================================== */

/* -----------------------------------------------------------------------
   Form panel (profile editor container)
   ----------------------------------------------------------------------- */
.form-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.form-panel-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
}

.form-panel-title {
    font-size: var(--text-md);
    font-weight: var(--weight-semibold);
    color: var(--text-primary);
    flex: 1;
}

.form-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4);
}

.form-panel-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid var(--border-subtle);
    flex-shrink: 0;
}

/* -----------------------------------------------------------------------
   Form sections (disclosure-based grouping)
   ----------------------------------------------------------------------- */
.form-section {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    overflow: hidden;
}

.form-section-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    background: var(--bg-elevated);
    border: none;
    cursor: pointer;
    user-select: none;
    text-align: left;
    transition: background var(--transition-fast);
}

.form-section-header:hover {
    background: var(--bg-hover);
}

.form-section-chevron {
    width: 14px;
    height: 14px;
    color: var(--text-tertiary);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.form-section.is-open .form-section-chevron {
    transform: rotate(90deg);
}

.form-section-icon {
    width: 16px;
    text-align: center;
    flex-shrink: 0;
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.form-section-body,
.form-section-content {
    padding: var(--space-4);
    display: none;
}

.form-section.is-open .form-section-body,
.form-section.is-open .form-section-content {
    display: block;
}

/* -----------------------------------------------------------------------
   Field grid (two-column layout for compact forms)
   ----------------------------------------------------------------------- */
.form-fields {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
}

/* Single-column override */
.form-row.full-width {
    grid-template-columns: 1fr;
}

/* Three-column for port + protocol combos */
.form-row.triple {
    grid-template-columns: 1fr 100px 120px;
}

/* -----------------------------------------------------------------------
   Protocol-specific field visibility
   Fields are hidden unless their protocol class is active.
   ----------------------------------------------------------------------- */
.proto-only-ssh,
.proto-only-telnet,
.proto-only-raw {
    display: none;
}

.protocol-ssh .proto-only-ssh,
.protocol-telnet .proto-only-telnet,
.protocol-raw .proto-only-raw,
.protocol-github .proto-only-github {
    display: flex;
}

/* For block-level protocol fields */
.protocol-ssh .proto-only-ssh.form-section,
.protocol-telnet .proto-only-telnet.form-section,
.protocol-raw .proto-only-raw.form-section,
.protocol-github .proto-only-github.form-section {
    display: block;
}

/* -----------------------------------------------------------------------
   Tag input
   ----------------------------------------------------------------------- */
.tag-input-wrapper {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-1);
    min-height: 30px;
    padding: var(--space-1) var(--space-2);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    cursor: text;
    transition: border-color var(--transition-fast);
}

.tag-input-wrapper:hover {
    border-color: var(--border-strong);
}

.tag-input-wrapper:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-muted);
}

.tag-item {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    height: 20px;
    padding: 0 var(--space-2);
    font-size: var(--text-xs);
    color: var(--accent);
    background: var(--accent-muted);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.tag-item-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 12px;
    height: 12px;
    font-size: 10px;
    cursor: pointer;
    border-radius: 50%;
    color: var(--accent);
    transition: background var(--transition-fast);
}

.tag-item-remove:hover {
    background: var(--accent-strong);
}

.tag-input {
    flex: 1;
    min-width: 60px;
    border: none;
    background: transparent;
    font-size: var(--text-sm);
    color: var(--text-primary);
    outline: none;
    height: 22px;
}

.tag-input::placeholder {
    color: var(--text-disabled);
}

/* -----------------------------------------------------------------------
   Jump host / proxy list
   ----------------------------------------------------------------------- */
.jump-host-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.jump-host-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
}

.jump-host-item .jump-host-order {
    font-size: var(--text-xs);
    color: var(--text-disabled);
    min-width: 16px;
    text-align: center;
}

.jump-host-item .jump-host-value {
    flex: 1;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.jump-host-item .jump-host-actions {
    display: flex;
    gap: var(--space-1);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.jump-host-item:hover .jump-host-actions {
    opacity: 1;
}

.jump-host-add {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    border: 1px dashed var(--border-default);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

.jump-host-add:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* -----------------------------------------------------------------------
   Key file selector row
   ----------------------------------------------------------------------- */
.file-selector {
    display: flex;
    gap: var(--space-2);
}

.file-selector .form-input {
    flex: 1;
}

.file-selector .btn {
    flex-shrink: 0;
}

/* File path display */
.file-path {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    background: var(--bg-input);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* -----------------------------------------------------------------------
   Inline validation
   ----------------------------------------------------------------------- */
.form-group.is-valid .form-input {
    border-color: var(--success);
}

.form-group.is-valid .form-input:focus {
    box-shadow: 0 0 0 2px rgba(102, 187, 106, 0.20);
}

.form-group.is-invalid .form-input {
    border-color: var(--error);
}

.form-group.is-invalid .form-input:focus {
    box-shadow: 0 0 0 2px rgba(239, 83, 80, 0.20);
}

.form-validation-icon {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--text-sm);
}

.form-group.is-valid .form-validation-icon   { color: var(--success); }
.form-group.is-invalid .form-validation-icon { color: var(--error); }

/* -----------------------------------------------------------------------
   Help text under sections
   ----------------------------------------------------------------------- */
.form-section-help {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    padding: 0 var(--space-4) var(--space-3);
    line-height: var(--leading-relaxed);
}

/* -----------------------------------------------------------------------
   Colour preview (for terminal colour settings)
   ----------------------------------------------------------------------- */
.colour-preview {
    display: inline-block;
    width: 18px;
    height: 18px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-default);
    vertical-align: middle;
    cursor: pointer;
}

/* -----------------------------------------------------------------------
   Number input with stepper
   ----------------------------------------------------------------------- */
.form-number {
    display: flex;
    align-items: center;
}

.form-number .form-input {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    text-align: center;
    width: 60px;
    /* Hide browser spinners */
    -moz-appearance: textfield;
}
.form-number .form-input::-webkit-inner-spin-button,
.form-number .form-input::-webkit-outer-spin-button {
    appearance: none;
}

.form-number-btn {
    width: 24px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-left: none;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.form-number-btn:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.form-number-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* -----------------------------------------------------------------------
   Form action row (test connection, etc.)
   ----------------------------------------------------------------------- */
.form-actions-inline {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding-top: var(--space-3);
    border-top: 1px solid var(--border-subtle);
    margin-top: var(--space-3);
}

.form-actions-inline .btn {
    flex-shrink: 0;
}

.form-actions-inline .form-actions-status {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    flex: 1;
}

/* -----------------------------------------------------------------------
   Form hint — inline help text below fields
   ----------------------------------------------------------------------- */
.form-hint {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: var(--space-1);
    line-height: var(--leading-relaxed);
}

.form-hint.secret-error {
    color: var(--danger);
}

/* -----------------------------------------------------------------------
   Toggle wrapper — label + toggle switch in a row
   ----------------------------------------------------------------------- */
.form-toggle-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-1) 0;
}

.form-toggle-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    flex: 1;
}

/* -----------------------------------------------------------------------
   Jump host rows
   ----------------------------------------------------------------------- */
.jump-hosts-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.jump-host-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-2);
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.jump-host-fields {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

/* -----------------------------------------------------------------------
   Port-forwarding rows
   ----------------------------------------------------------------------- */
.port-forwards-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.port-forward-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-2);
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.port-forward-fields {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.port-forward-arrow {
    color: var(--text-muted);
    font-size: var(--text-sm);
    flex-shrink: 0;
}

.port-forward-enabled-label {
    display: flex;
    gap: var(--space-1);
    align-items: center;
    font-size: var(--text-xs);
    color: var(--text-secondary);
    white-space: nowrap;
    cursor: pointer;
}

.port-forward-enabled-label input[type="checkbox"] {
    accent-color: var(--accent);
}

/* -----------------------------------------------------------------------
   Payload preset rows
   ----------------------------------------------------------------------- */
.payload-presets-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.preset-row {
    display: grid;
    grid-template-columns: 120px 1fr 100px auto;
    gap: var(--space-2);
    align-items: center;
}

/* -----------------------------------------------------------------------
   Small / compact form controls — used inside repeater rows
   ----------------------------------------------------------------------- */
.form-input-sm,
.form-select-sm {
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-2);
    height: 30px;
}