:root {
  --background-color: #f4f4f8;
  --text-color: #333;
  --primary-color: #007bff;
  --primary-hover-color: #0056b3;
  --secondary-color: #ffffff;
  --border-color: #ddd;
  --success-color: #28a745;
  --error-color: #dc3545;
  --error-hover-color: #c82333;
  --unsaved-color: #e67e22;
  --unsaved-hover-color: #d35400;
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica,
    Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--background-color);
  color: var(--text-color);
  margin: 0;
  padding: 1rem;
  font-size: 16px;
}

#app-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: auto;
}

h1, h2, h3 {
  margin: 0;
  color: #111;
}

h1 {
    font-size: 1.8rem;
}

h2 {
    font-size: 1.2rem;
    color: var(--primary-color);
}

h3 {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 0.5rem;
}


.card {
  background-color: var(--secondary-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

#module-control-card h2 {
    margin: 0 0 0.75rem 0;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.control-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.control-row .connection-status {
    margin-left: auto;
}

.info-row {
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
}

.connect-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.device-info {
    display: flex;
    gap: 1.5rem;
    font-weight: 500;
    flex-wrap: wrap;
    font-size: 0.9rem;
    color: #666;
}

.device-info span:not(:empty)::before {
    font-weight: bold;
    color: #333;
    margin-right: 0.5rem;
}
#firmware-version:not(:empty)::before {
    content: 'FW Version:';
}
#firmware-type:not(:empty)::before {
    content: 'FW Type:';
}
#mac-address:not(:empty)::before {
    content: 'MAC:';
}


.connection-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: bold;
}

#status-text.error {
    color: var(--error-color);
}
#status-text.success {
    color: var(--success-color);
}


.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  transition: background-color 0.3s;
}

.status-dot.disconnected { background-color: var(--error-color); }
.status-dot.connected { background-color: var(--success-color); }
.status-dot.connecting { background-color: #ffc107; }

button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background-color 0.2s, box-shadow 0.2s;
  font-weight: 500;
}

button:hover:not(:disabled) {
  background-color: var(--primary-hover-color);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

button:disabled {
  background-color: #aaa;
  cursor: not-allowed;
}

button#save-all-btn.dirty {
    background-color: var(--unsaved-color);
}
button#save-all-btn.dirty:hover:not(:disabled) {
    background-color: var(--unsaved-hover-color);
}

button#toggle-errors-btn.has-errors {
    background-color: var(--error-color);
}
button#toggle-errors-btn.has-errors:hover:not(:disabled) {
    background-color: var(--error-hover-color);
}

.btn-fixed-width {
    width: 150px;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 0.75rem;
}

@media (max-width: 900px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

.data-column {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.config-column {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.card[aria-disabled="true"] {
    opacity: 0.5;
    pointer-events: none;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}
.card-header h2 {
    margin: 0;
}

.card-footer-actions {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.card-footer-actions button.active {
    background-color: var(--primary-hover-color);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
}

.form-group-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.form-group-checkbox label {
    font-weight: 500;
    color: #555;
    font-size: 0.9rem;
    cursor: pointer;
    user-select: none;
}

.indicator-item-container {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}
.indicator-item {
    flex: 1;
    min-width: 130px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid #eee;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background-color 0.2s, color 0.2s;
}
.indicator-item.inactive {
    background-color: #f0f0f0;
    color: #555;
    border-color: #e0e0e0;
}
.indicator-item.active {
    background-color: var(--success-color);
    color: white;
    border-color: #1e7e34;
}

.live-data-grid {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 0.5rem 1rem;
    align-items: center;
}

.live-data-grid .live-data-label {
    font-weight: bold;
    font-size: 0.9rem;
}

.separator {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 1rem 0;
}

.eng-gate-grid {
    display: grid;
    grid-template-columns: 120px 1fr 1fr;
    gap: 0.25rem 1rem;
    align-items: center;
    margin-top: 0.75rem;
}

.eng-gate-grid .header {
    font-weight: bold;
    color: #555;
    text-align: center;
    margin-bottom: 0.25rem;
}
.eng-gate-grid .header:first-child {
    text-align: left;
}
.eng-gate-grid .gate-label {
    font-weight: bold;
    font-size: 0.9rem;
}

.progress-bar-container {
    background-color: #eee;
    border-radius: 4px;
    height: 20px;
    position: relative;
    border: 1px solid #e0e0e0;
    transition: background-color 0.2s, opacity 0.2s;
}
.progress-bar {
    background-color: var(--primary-color);
    height: 100%;
    border-radius: 3px;
    transition: width 0.1s linear, background-color 0.2s;
    text-align: right;
    padding-right: 5px;
    color: white;
    font-size: 0.8rem;
    line-height: 20px;
    font-weight: 500;
    white-space: nowrap;
}

.eng-gate-grid .progress-bar-container.irrelevant {
    opacity: 0.6;
}

.eng-gate-grid .progress-bar-container.irrelevant .progress-bar {
    background-color: #888;
}

.config {
    opacity: 1;
    transition: opacity 0.3s;
}
.config[aria-disabled="true"] {
    opacity: 0.5;
    pointer-events: none;
}

.config-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 0.75rem;
}
.config-header h2 {
    margin: 0;
    border: none;
    padding: 0;
}
.config-header .actions-group {
    margin: 0;
}


.config-group {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 0.75rem;
}
.config-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}


.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem 2rem;
    margin-bottom: 1rem;
}

.form-group {
    display: grid;
    grid-template-columns: 200px 1fr;
    align-items: center;
    gap: 0.75rem;
}


.form-group label {
    font-weight: bold;
    font-size: 0.9rem;
    color: #555;
    transition: color 0.2s;
    white-space: nowrap;
}

.form-group label.dirty {
    color: var(--unsaved-color);
}
.form-group label.dirty::after {
    content: ' *';
    color: var(--unsaved-color);
    font-size: 1.2rem;
    vertical-align: middle;
}

.form-group span {
    font-size: 0.8rem;
    color: #666;
    font-style: italic;
    min-height: 1rem;
    grid-column: 2; /* Span across the input column */
}

.form-description {
    font-size: 0.8rem;
    color: #666;
    margin: 0.25rem 0 0 0;
}

.form-group-inline {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.form-group-inline > label {
    flex-shrink: 0; /* prevent label from shrinking */
}
.form-group-inline input[type="text"] {
    flex-grow: 1;
}

input[type="number"],
input[type="text"],
select {
    width: 100%;
    padding: 0.5rem;
    background-color: #fff;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    border-radius: 4px;
    font-size: 0.9rem;
    font-family: inherit;
    min-width: 80px;
}
select {
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 2.5rem;
}
select:disabled {
    background-color: #f0f0f0;
    opacity: 0.7;
    cursor: not-allowed;
}


input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
    outline: 2px solid var(--primary-color);
    border-color: var(--primary-color);
}

/* 
  These utility classes are given a more specific selector 
  to override the default 'width: 100%' from the rule above.
*/
:is(.form-group, .form-group-inline) .input-width-xs {
    width: 100px;
}
:is(.form-group, .form-group-inline) .input-width-s {
    width: 70px;
}
:is(.form-group, .form-group-inline) .input-width-m {
    width: 150px;
}
:is(.form-group, .form-group-inline) .input-width-l {
    width: 200px;
}
:is(.form-group, .form-group-inline) .input-width-xl {
    width: 250px;
}


.range-input-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

input[type="range"] {
    flex-grow: 1;
    width: 100%;
    padding: 0;
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    background: #e9e9e9;
    border-radius: 5px;
    outline: none;
    margin: 0;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--primary-color);
  cursor: pointer;
  border-radius: 50%;
  transition: background-color 0.2s;
}
input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--primary-color);
  cursor: pointer;
  border-radius: 50%;
  border: none;
  transition: background-color 0.2s;
}

.range-input-wrapper.irrelevant input[type="range"]::-webkit-slider-thumb,
input[type="range"]:disabled::-webkit-slider-thumb {
  background: #b0b0b0;
}
.range-input-wrapper.irrelevant input[type="range"]::-moz-range-thumb,
input[type="range"]:disabled::-moz-range-thumb {
  background: #b0b0b0;
}

.range-value {
    font-size: 0.9rem;
    font-weight: 500;
    color: #333;
    width: 30px;
    text-align: right;
}


.sensitivity-grid {
    display: grid;
    grid-template-columns: 120px 1fr 1fr;
    align-items: center;
    gap: 0.25rem 1rem;
    margin-top: 0.5rem;
}

.sensitivity-grid .header {
    font-weight: bold;
    color: #888;
    font-size: 0.9rem;
    text-align: center;
}
.sensitivity-grid .header:first-child {
    text-align: left;
}


.sensitivity-grid .gate-index {
    text-align: left;
    font-weight: bold;
    font-size: 0.9rem;
    transition: color 0.2s;
}
.sensitivity-grid .gate-index.dirty {
    color: var(--unsaved-color);
}


.actions-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.log-header h2 {
    margin: 0;
    border: none;
    padding: 0;
}

.serial-log {
    background-color: #2b2b2b;
    color: #f0f0f0;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
    font-size: 0.85rem;
    padding: 0.75rem;
    border-radius: 6px;
    height: 250px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.serial-log .log-entry.out { color: #87cefa; } /* lightskyblue */
.serial-log .log-entry.in { color: #98fb98; } /* palegreen */
.serial-log .log-entry.error { color: #ff6347; } /* tomato */
.serial-log .log-entry.info { color: #f0e68c; } /* khaki */

.error-log-card .serial-log {
    height: 150px;
    background-color: #3d2b2b;
}

.error-log-card .log-entry {
    color: var(--error-color);
}

/* Manual/How-To Guide Styles */
details summary {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    cursor: pointer;
    list-style: inside;
}
details[open] summary {
    margin-bottom: 1rem;
}

.manual-content {
    line-height: 1.6;
    padding-left: 1rem;
    border-left: 3px solid var(--border-color);
}
.manual-content h2 {
    font-size: 1.1rem;
    color: #333;
    border-bottom: 1px solid #eee;
    padding-bottom: 0.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}
.manual-content h2:first-child {
    margin-top: 0;
}
.manual-content p, 
.manual-content ul,
.manual-content ol {
    margin-bottom: 1rem;
}
.manual-content ul,
.manual-content ol {
    padding-left: 1.5rem;
}
.manual-content li {
    margin-bottom: 0.5rem;
}
.manual-content strong {
    color: #111;
}

@media (max-width: 700px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}