/* ============================================
   Form System — Sensei-Rams Industrial Controls
   ============================================
   - Panel background inputs (not white)
   - Orange focus rings (not blue)
   - Sharp radii (2px max)
   - Mono uppercase labels (Dymo style)
   - NO drop shadows, NO gradients
   - Inset pressed states for buttons
   ============================================ */

:root {
    --form-padding: 1.25rem;
    --form-gap: 1rem;
    --form-border-radius: 2px;
    --form-border-width: 1px;
    --form-focus-shadow: 0 0 0 2px rgba(255, 190, 0, 0.35);
    --form-transition: border-color 200ms ease, box-shadow 200ms ease;
    
    --form-control-bg: var(--rams-panel, #D9D9D9);
    --form-control-border: var(--rams-line, #CCCCCC);
    --form-control-border-focus: var(--rams-orange, #FFBE00);
    --form-control-text: var(--rams-foreground, #1A1A1A);
    --form-control-placeholder: var(--rams-muted, #999999);
    
    --form-label-color: var(--rams-muted, #999999);
    --form-label-weight: 700;
    --form-label-size: 0.75rem;
    
    --form-help-color: var(--rams-muted, #999999);
    --form-help-size: 0.8125rem;
    
    --form-error-bg: rgba(214, 45, 45, 0.06);
    --form-error-border: var(--rams-red, #D62D2D);
    --form-error-text: var(--rams-red, #D62D2D);
    
    --form-success-bg: rgba(45, 140, 60, 0.06);
    --form-success-border: var(--rams-green, #2D8C3C);
    --form-success-text: var(--rams-green, #2D8C3C);
    
    --form-input-height: 2.5rem;
}

/* ============================================
   Validation Helpers
   ============================================ */

.invalid-feedback {
    color: var(--rams-red, #D62D2D);
    display: block;
    margin-top: var(--spacing-1);
    font-size: var(--font-size-sm);
}

.is-invalid {
    border-color: var(--rams-red, #D62D2D) !important;
}

.input-control.is-invalid,
.form-control.is-invalid {
    background-image: none;
}

@media (max-width: 600px) {
    .input-control,
    .form-control,
    select,
    textarea {
        font-size: 16px;
    }
}

/* ============================================
   Form Container — Module panel
   ============================================ */

.form-container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--form-padding);
    background: var(--rams-module, #E6E6E6);
    border-radius: var(--form-border-radius);
    border: 1px solid var(--rams-line, #CCCCCC);
    /* NO box-shadow */
}

.form-container.large {
    max-width: 900px;
}

.form-section {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--rams-line, #CCCCCC);
}

.form-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.form-section-title {
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--rams-foreground, #1A1A1A);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--rams-orange, #FFBE00);
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--form-gap);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--form-gap);
}

.form-row--2 {
    grid-template-columns: repeat(2, 1fr);
}

.form-row--3 {
    grid-template-columns: repeat(3, 1fr);
}

/* ============================================
   Form Fields
   ============================================ */

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-field--inline {
    flex-direction: row;
    align-items: center;
}

.form-field--inline label {
    flex: 0 0 auto;
    min-width: 120px;
}

.form-field--inline input[type="checkbox"],
.form-field--inline input[type="radio"] {
    margin-right: 0.5rem;
}

/* Labels — Dymo-style instrument labels */
.form-label {
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: var(--form-label-size);
    font-weight: var(--form-label-weight);
    color: var(--form-label-color);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--form-transition);
}

.form-label.required::after {
    content: '*';
    color: var(--rams-red, #D62D2D);
    font-weight: 700;
}

.form-field:focus-within > .form-label {
    color: var(--rams-foreground, #1A1A1A);
}

/* Input Controls — Panel-background, orange focus */
.form-control,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
input[type="time"],
input[type="search"],
input[type="tel"],
input[type="url"],
textarea,
select {
    min-height: var(--form-input-height);
    padding: 0.5rem 0.75rem;
    font-size: 0.9375rem;
    font-family: inherit;
    font-weight: 400;
    line-height: 1.5;
    border: 1px solid var(--form-control-border);
    border-radius: var(--form-border-radius);
    background-color: var(--form-control-bg);
    color: var(--form-control-text);
    transition: var(--form-transition);
    outline: none;
    /* NO box-shadow on default state */
}

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

.form-control:hover,
input:hover,
textarea:hover,
select:hover {
    border-color: var(--rams-muted, #999999);
    /* NO background change, NO shadow — mechanical, not reactive */
}

.form-control:focus,
input:focus,
textarea:focus,
select:focus {
    border-color: var(--form-control-border-focus);
    background-color: var(--form-control-bg);
    box-shadow: var(--form-focus-shadow);
}

.form-control:disabled,
input:disabled,
textarea:disabled,
select:disabled {
    background-color: var(--rams-chassis, #F2F2F2);
    color: var(--rams-muted, #999999);
    cursor: not-allowed;
    opacity: 0.5;
}

.form-control.is-valid,
input.is-valid,
textarea.is-valid,
select.is-valid {
    border-color: var(--form-success-border);
    background-color: var(--form-success-bg);
}

.form-control.is-valid:focus,
input.is-valid:focus,
textarea.is-valid:focus,
select.is-valid:focus {
    border-color: var(--form-success-border);
    box-shadow: 0 0 0 2px rgba(45, 140, 60, 0.2);
}

.form-control.is-invalid,
input.is-invalid,
textarea.is-invalid,
select.is-invalid {
    border-color: var(--form-error-border);
    background-color: var(--form-error-bg);
}

.form-control.is-invalid:focus,
input.is-invalid:focus,
textarea.is-invalid:focus,
select.is-invalid:focus {
    border-color: var(--form-error-border);
    box-shadow: 0 0 0 2px rgba(214, 45, 45, 0.2);
}

textarea {
    min-height: 120px;
    resize: vertical;
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
}

textarea.small {
    min-height: 80px;
}

textarea.large {
    min-height: 200px;
}

/* ============================================
   Tom Select (Tokenized)
   ============================================ */

.js-tom-select {
    height: auto !important;
}

.ts-control {
    display: flex;
    align-items: center;
    min-height: calc(1.5em + 0.75rem + 2px);
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--rams-foreground);
    background-color: var(--rams-panel);
    background-clip: padding-box;
    border: 1px solid var(--rams-line);
    border-radius: var(--radius-sm);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.ts-control.focus,
.ts-control.input-active,
.ts-control:hover {
    border-color: var(--rams-orange) !important;
    outline: 0;
    box-shadow: var(--form-focus-shadow);
}

.ts-control .item {
    line-height: 1.5 !important;
}

.ts-control input {
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.5;
    padding: 0 !important;
    margin: 0 !important;
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
    height: auto !important;
}

.ts-dropdown,
.ts-dropdown .ts-dropdown-content {
    background-color: var(--rams-module) !important;
    border: 1px solid var(--rams-line);
    box-shadow: none;
    z-index: 1050;
}

.ts-dropdown .option {
    padding: var(--spacing-2) var(--spacing-3);
    color: var(--rams-foreground);
}

.ts-dropdown .option:hover,
.ts-dropdown .option.active {
    background-color: var(--rams-panel);
    color: var(--rams-foreground);
}

.tom-select {
    background-color: var(--rams-panel) !important;
    z-index: 1;
}

/* ============================================
   File Input Helpers
   ============================================ */

.custom-file-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-top: var(--spacing-1);
}

.custom-file-button {
    background-color: var(--rams-orange);
    color: var(--rams-foreground);
    border: 1px solid var(--rams-orange);
    border-radius: var(--radius-sm);
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

.custom-file-button:hover {
    background-color: var(--color-primary-700);
    border-color: var(--color-primary-700);
}

.file-chosen {
    font-size: var(--font-size-sm);
    color: var(--rams-muted);
}

.form-text a {
    text-decoration: underline;
    color: var(--rams-steel);
}

.form-text a:hover {
    text-decoration: none;
}

/* ============================================
   Consumable Request Helpers
   ============================================ */

.form--compact .form-control,
.form--compact .form-select {
    max-width: 350px;
}

.consumable-item {
    display: flex;
    gap: var(--spacing-2);
    align-items: center;
}

.consumable-item > div {
    flex: 1;
}

.consumable-item .form-group:last-child {
    flex: 0 0 120px;
}

.remove-item-btn {
    flex: 0 0 auto;
    white-space: nowrap;
}

.add-item-btn {
    margin-top: var(--spacing-3);
}

/* Select Elements — Custom arrow, industrial */
select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23999999' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 12px;
    padding-right: 2.5rem;
    cursor: pointer;
}

select::-ms-expand {
    display: none;
}

/* Input Groups — Border-defined, no shadow */
.input-group {
    display: flex;
    align-items: stretch;
    border: var(--form-border-width) solid var(--form-control-border);
    border-radius: var(--form-border-radius);
    background-color: var(--form-control-bg);
    overflow: hidden;
    transition: var(--form-transition);
}

.input-group:hover {
    border-color: var(--rams-muted, #999999);
}

.input-group:focus-within {
    border-color: var(--form-control-border-focus);
    box-shadow: var(--form-focus-shadow);
}

.input-group > input,
.input-group > select {
    flex: 1;
    border: none;
    padding: 0.5rem 0.75rem;
}

.input-group > input:focus {
    box-shadow: none;
}

.input-group-prepend,
.input-group-append {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    background-color: var(--rams-panel, #D9D9D9);
    color: var(--rams-muted, #999999);
    font-family: var(--font-mono, monospace);
    font-weight: 600;
    font-size: 0.8125rem;
    white-space: nowrap;
    border: none;
}

.input-group-prepend {
    border-right: 1px solid var(--form-control-border);
}

.input-group-append {
    border-left: 1px solid var(--form-control-border);
    cursor: pointer;
}

.input-group-append:hover {
    background-color: var(--rams-line, #CCCCCC);
    color: var(--rams-foreground, #1A1A1A);
}

/* ============================================
   Checkboxes & Radios — Industrial toggles
   ============================================ */

.form-field--checkbox,
.form-field--radio {
    flex-direction: row;
    align-items: center;
}

input[type="checkbox"],
input[type="radio"] {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 1px solid var(--form-control-border);
    border-radius: 2px;
    background-color: var(--form-control-bg);
    cursor: pointer;
    transition: var(--form-transition);
    flex-shrink: 0;
}

input[type="radio"] {
    border-radius: var(--radius-sm);
}

input[type="checkbox"]:hover,
input[type="radio"]:hover {
    border-color: var(--rams-orange, #FFBE00);
}

input[type="checkbox"]:checked,
input[type="radio"]:checked {
    background-color: var(--rams-orange, #FFBE00);
    border-color: var(--rams-orange, #FFBE00);
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' fill='%231A1A1A' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100%;
}

input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
    box-shadow: var(--form-focus-shadow);
}

input[type="checkbox"]:disabled,
input[type="radio"]:disabled {
    background-color: var(--rams-chassis, #F2F2F2);
    border-color: var(--rams-line, #CCCCCC);
    cursor: not-allowed;
    opacity: 0.5;
}

/* Label for checkbox/radio */
.form-field--checkbox label,
.form-field--radio label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    user-select: none;
    margin-bottom: 0;
}

.form-field--checkbox input[type="checkbox"] + span,
.form-field--radio input[type="radio"] + span {
    flex: 1;
}

/* Multiple Checkboxes */
.checkbox-group,
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checkbox-group--inline,
.radio-group--inline {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1.5rem;
}

/* ============================================
   Help Text & Errors
   ============================================ */

.field-help {
    font-size: var(--form-help-size);
    color: var(--form-help-color);
    margin: 0;
    font-style: italic;
}

.field-error {
    font-size: var(--form-help-size);
    color: var(--form-error-text);
    margin: 0.25rem 0 0 0;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.field-error::before {
    content: '⚠';
    flex-shrink: 0;
}

/* Error State */
.form-field.is-invalid .form-control,
.form-field.is-invalid input,
.form-field.is-invalid textarea,
.form-field.is-invalid select {
    border-color: var(--form-error-border);
    background-color: var(--form-error-bg);
}

.form-field.is-invalid .form-control:focus,
.form-field.is-invalid input:focus,
.form-field.is-invalid textarea:focus,
.form-field.is-invalid select:focus {
    border-color: var(--form-error-border);
    box-shadow: 0 0 0 3px rgba(252, 165, 165, 0.1);
}

.form-field.is-invalid label {
    color: var(--form-error-text);
}

/* Success State */
.form-field.is-valid .form-control,
.form-field.is-valid input,
.form-field.is-valid textarea,
.form-field.is-valid select {
    border-color: var(--form-success-border);
    background-color: var(--form-success-bg);
}

/* ============================================
   Form Buttons — Mechanical controls
   ============================================ */

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    justify-content: flex-start;
}

.form-actions.center {
    justify-content: center;
}

.form-actions.right {
    justify-content: flex-end;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border: 1px solid var(--rams-line, #CCCCCC);
    border-radius: var(--form-border-radius);
    cursor: pointer;
    transition: var(--form-transition);
    outline: none;
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
    background: var(--rams-module, #E6E6E6);
    color: var(--rams-foreground, #1A1A1A);
}

.btn:hover {
    /* NO translateY, NO drop shadow — buttons don’t float */
    background: var(--rams-panel, #D9D9D9);
    border-color: var(--rams-muted, #999999);
}

.btn:active {
    transform: scale(0.98);
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.15);
}

.btn:focus-visible {
    box-shadow: var(--form-focus-shadow);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Primary Button — Braun Orange */
.btn-primary {
    background-color: var(--rams-orange, #FFBE00);
    color: var(--rams-foreground, #1A1A1A);
    border: 1px solid var(--rams-orange, #FFBE00);
}

.btn-primary:hover {
    background-color: #E5AB00;
    border-color: #E5AB00;
}

/* Secondary Button — Neutral */
.btn-secondary {
    background-color: var(--rams-muted, #999999);
    color: #ffffff;
    border: 1px solid var(--rams-muted, #999999);
}

.btn-secondary:hover {
    background-color: #808080;
    border-color: #808080;
}

/* Outline Button — Ghost */
.btn-outline {
    background-color: transparent;
    color: var(--rams-foreground, #1A1A1A);
    border: 1px solid var(--rams-orange, #FFBE00);
}

.btn-outline:hover {
    background-color: rgba(255, 190, 0, 0.08);
    border-color: #E5AB00;
}

/* Danger Button — Signal Red */
.btn-danger {
    background-color: var(--rams-red, #D62D2D);
    color: #ffffff;
    border: 1px solid var(--rams-red, #D62D2D);
}

.btn-danger:hover {
    background-color: #B82424;
    border-color: #B82424;
}

/* Success Button — Industrial Green */
.btn-success {
    background-color: var(--rams-green, #2D8C3C);
    color: #ffffff;
    border: 1px solid var(--rams-green, #2D8C3C);
}

.btn-success:hover {
    background-color: #24722F;
    border-color: #24722F;
}

/* Button Sizes */
.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* ============================================
   Validation Messages — Industrial signal style
   ============================================ */

.form-validation-summary {
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
    background-color: var(--form-error-bg);
    border: none;
    border-left: 3px solid var(--form-error-border);
    border-radius: var(--form-border-radius);
    color: var(--form-error-text);
}

.form-validation-summary h4 {
    margin: 0 0 0.5rem 0;
    font-family: var(--font-mono, monospace);
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-validation-summary ul {
    margin: 0;
    padding-left: 1.25rem;
}

.form-validation-summary li {
    margin: 0.25rem 0;
    font-size: 0.875rem;
}

/* ============================================
   Loading & States
   ============================================ */

.form-field.loading .form-control {
    opacity: 0.6;
    pointer-events: none;
}

.btn.loading {
    opacity: 0.7;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-left: 0.5rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: var(--radius-sm);
    animation: spin 0.6s linear infinite;
}

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

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 640px) {
    .form-container {
        padding: 0.75rem;
        border-radius: 2px;
    }
    
    .form-row--2,
    .form-row--3 {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .form-field--inline {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .form-field--inline label {
        min-width: auto;
        margin-bottom: 0.25rem;
    }
}

/* ============================================
   Bootstrap Form Overrides — Rams compatibility
   ============================================ */

/* Override Bootstrap 5 form styles for consistency */
.form-label {
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-weight: var(--form-label-weight);
    color: var(--form-label-color);
    font-size: var(--form-label-size);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.25rem;
}

.form-text {
    font-size: var(--form-help-size);
    color: var(--form-help-color);
}

.invalid-feedback {
    display: block;
    font-size: var(--form-help-size);
    color: var(--form-error-text);
    margin-top: 0.25rem;
}

.is-invalid .form-control {
    border-color: var(--form-error-border);
    background-color: var(--form-error-bg);
}

.is-invalid .form-control:focus {
    border-color: var(--form-error-border);
    box-shadow: 0 0 0 2px rgba(214, 45, 45, 0.2);
}

/* ============================================
   Utility Classes
   ============================================ */

.form-required {
    color: var(--rams-red, #D62D2D);
    font-weight: 700;
}

.form-hint {
    font-size: 0.8125rem;
    color: var(--rams-muted, #999999);
    font-style: normal;
    margin-top: 0.25rem;
}

.form-divider {
    height: 1px;
    background: var(--rams-line, #CCCCCC);
    margin: 1.5rem 0;
    /* NO gradient — solid line */
}