:root {
    --bg-color: #f7f9fc;
    --font-color: #2c3e50;
    --card-bg: #ffffff;
    --primary-color: #4a90e2;
    --border-color: #e1e8ed;
    --label-color: #5a738e;
    --result-color: #1a293f;
    --error-color: #e74c3c;
    --success-color: #2ecc71;
    --details-bg: #eff6ff;
    --shadow-color: rgba(0, 0, 0, 0.08);
}

html[data-theme='dark'] {
    --bg-color: #1a1a1a;
    --font-color: #dcdcdc;
    --card-bg: #2a2a2a;
    --border-color: #3a3a3a;
    --label-color: #9e9e9e;
    --result-color: #ffffff;
    --details-bg: #2c3e50;
    --shadow-color: rgba(0, 0, 0, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--font-color);
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    width: 100%;
    max-width: 500px;
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-color);
    padding: 25px;
    box-sizing: border-box;
    transition: background-color 0.3s;
    margin-bottom: 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.header-buttons-left {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 38px;
    position: relative;
}

.header-buttons {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 38px;
    justify-content: flex-end;
}

h1,
.simulator-container h2 {
    flex-grow: 1;
    text-align: center;
    margin: 0;
    color: var(--primary-color);
    font-size: 1.5em;
}

h1 {
    padding-left: 0;
}

.simulator-container h2 {
    margin-bottom: 10px;
}

.icon-button {
    width: 38px;
    height: 38px;
    padding: 5px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: none;
    cursor: pointer;
    color: var(--label-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.9em;
    font-weight: bold;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.icon-button svg,
#globe-icon {
    width: 20px;
    height: 20px;
    stroke: currentColor;
}

.lang-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 10px var(--shadow-color);
    padding: 5px;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-top: 8px;
}

.lang-menu .lang-option {
    cursor: pointer;
    transition: color 0.2s;
    background: none;
    border: none;
    padding: 8px 12px;
    margin: 0;
    font: inherit;
    color: var(--label-color);
    white-space: nowrap;
    width: 100%;
    text-align: left;
    border-radius: 6px;
}

.lang-menu .lang-option.active {
    font-weight: bold;
    color: var(--font-color);
    background-color: var(--details-bg);
}

.lang-menu .lang-option:not(.active):hover {
    color: var(--primary-color);
    background-color: var(--details-bg);
}

.icon-button:hover {
    background-color: var(--details-bg);
}

details {
    margin-bottom: 20px;
    border-radius: 8px;
    background-color: var(--details-bg);
    padding: 5px 15px;
    border: 1px solid var(--border-color);
    transition: background-color 0.3s;
}

summary {
    font-weight: bold;
    cursor: pointer;
    padding: 10px 0;
    color: var(--primary-color);
}

.instructions {
    line-height: 1.6;
}

.instructions p,
.instructions ul {
    margin: 10px 0;
}

.instructions ul {
    padding-left: 20px;
}

.measurement-notice {
    background-color: var(--details-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 15px;
    margin-bottom: 20px;
    margin-top: 15px;
    line-height: 1.6;
}

.measurement-notice h4 {
    margin: 0 0 5px 0;
    color: var(--primary-color);
}

.measurement-notice p {
    margin: 0;
    font-size: 0.95em;
}

code {
    background-color: var(--border-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    word-break: break-all;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--label-color);
    font-weight: 500;
}

textarea {
    width: 100%;
    height: 100px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    box-sizing: border-box;
    resize: vertical;
    background-color: var(--card-bg);
    color: var(--font-color);
}

.qr-upload-area {
    margin-top: 15px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
}

.qr-upload-area.dragover {
    border-color: var(--primary-color);
    background-color: var(--details-bg);
}

.qr-upload-area p {
    margin: 0 0 10px 0;
    color: var(--label-color);
    pointer-events: none;
}

button {
    width: 100%;
    padding: 12px;
    margin-top: 15px;
    border: none;
    border-radius: 8px;
    background-color: var(--primary-color);
    color: white;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #357abd;
}

button.secondary-btn {
    background-color: transparent;
    color: var(--label-color);
    border: 1px solid var(--border-color);
}

#qr-upload-btn {
    width: auto;
    padding: 10px 20px;
    font-size: 0.9em;
    margin-top: 0;
}

button.secondary-btn:hover {
    background-color: var(--details-bg);
}

.results {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: 1.1em;
}

.result-item .label {
    color: var(--label-color);
}

.result-item .value {
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    color: var(--result-color);
}

.result-item.important .value {
    font-size: 1.2em;
}

.result-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

.customization-details {
    margin: 0;
    padding: 0;
    background: none;
    border: none;
}

.customization-details summary {
    font-size: 1em;
    font-weight: normal;
}

.customization-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 15px 10px 10px 10px;
    border-top: 1px solid var(--border-color);
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.option-group input[type="text"],
.option-group input[type="file"] {
    padding: 8px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--font-color);
}

.selector-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.selector-group .selectable-option {
    font-size: 0.9em;
    padding: 8px;
    margin-top: 0;
    background-color: var(--card-bg);
    color: var(--font-color);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    flex-grow: 1;
    min-width: 60px;
    width: auto;
    text-align: center;
}

.selector-group .selectable-option.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-color);
}

.image-selector .selectable-option,
#uploaded-image-preview .selectable-option {
    height: 40px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 0;
}

#gradient-selector .selectable-option {
    height: 40px;
    padding: 0;
}

.history-container {
    margin-top: 25px;
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.history-header h2 {
    margin: 0;
    font-size: 1.2em;
    color: var(--label-color);
}

#clear-history-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--label-color);
    padding: 4px 8px;
    font-size: 0.8em;
    margin-top: 0;
    width: auto;
}

#history-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 200px;
    overflow-y: auto;
}

#history-list li {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 10px;
    padding-right: 30px;
    border-radius: 6px;
    background-color: var(--details-bg);
    margin-bottom: 8px;
    font-size: 0.9em;
}

.history-item-main {
    display: flex;
    justify-content: space-between;
    width: 100%;
}

#history-list .timestamp {
    font-size: 0.8em;
    color: var(--label-color);
}

#history-list .history-value {
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
}

.history-note {
    margin-top: 5px;
    font-size: 0.9em;
    color: var(--primary-color);
    cursor: pointer;
    width: 100%;
    border: none;
    background: none;
    text-align: left;
    padding: 0;
}

.history-note:hover {
    text-decoration: underline;
}

.delete-history-item {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 24px;
    height: 24px;
    background: none;
    border: none;
    color: var(--label-color);
    font-size: 1.2em;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.delete-history-item:hover {
    color: var(--error-color);
}

#status {
    margin-top: 15px;
    text-align: center;
    font-size: 0.9em;
    height: auto;
    min-height: 20px;
    line-height: 1.5;
}

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

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

.footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
}

.footer a {
    color: var(--label-color);
    text-decoration: none;
    transition: color 0.2s;
}

.footer a:hover {
    color: var(--primary-color);
}

.footer-separator {
    color: var(--border-color);
}

.footer-lang-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-lang-switcher .lang-option {
    cursor: pointer;
    transition: color 0.2s;
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    font: inherit;
    color: var(--label-color);
    white-space: nowrap;
}

.footer-lang-switcher .lang-option.active {
    font-weight: bold;
    color: var(--font-color);
}

.footer-lang-switcher .lang-option:not(.active):hover {
    color: var(--primary-color);
}

.footer-disclaimers {
    text-align: center;
    font-size: 0.75em;
    color: var(--label-color);
    max-width: 500px;
}

.footer-disclaimers p {
    margin: 5px 0;
    line-height: 1.5;
}

.free-notice {
    font-weight: bold;
    color: var(--success-color);
}

html[data-theme='dark'] .free-notice {
    color: #81c784;
}

.preview-container {
    margin-bottom: 15px;
}

#preview-canvas {
    width: 100%;
    height: auto;
    border-radius: 8px;
    background-color: var(--border-color);
}

.toggle-group {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
}

input:checked+.slider {
    background-color: var(--primary-color);
}

input:checked+.slider:before {
    transform: translateX(20px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

.simulator-container {
    margin-top: 20px;
}

.sim-controls {
    display: flex;
    gap: 10px;
}

.sim-controls button {
    width: 50%;
}

.sim-results {
    margin-top: 15px;
}

.extreme-notice {
    font-size: 0.9em;
    color: var(--success-color);
    margin-left: 10px;
    font-weight: bold;
}

html[data-theme='dark'] .extreme-notice {
    color: #81c784;
}

.sim-disclaimer {
    margin: 10px 0;
    padding: 10px;
    background-color: var(--details-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
    color: var(--primary-color);
    font-size: 0.9em;
}

.sim-metaphysics {
    margin-top: 15px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sim-metaphysics p {
    margin: 0 0 5px 0;
    font-weight: bold;
    color: var(--label-color);
    font-size: 0.9em;
    text-align: center;
}

.sim-metaphysics .meta-option {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
    cursor: pointer;
    margin-bottom: 0;
}

.sim-metaphysics input[type="checkbox"] {
    width: 16px;
    height: 16px;
}

.result-item.json-output {
    display: block;
    text-align: left;
    align-items: flex-start;
    flex-direction: column;
}

.result-item.json-output .json-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.result-item.json-output .json-pre {
    background-color: var(--details-bg);
    padding: 12px;
    border-radius: 8px;
    margin-top: 8px;
    font-size: 0.9em;
    white-space: pre-wrap;
    word-break: break-all;
    font-family: 'Courier New', monospace;
    width: 100%;
    box-sizing: border-box;
}
/* 指令图片样式 */
.instruction-images {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 15px 0;
    align-items: center;
}

.instruction-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.instruction-image:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

/* 响应式设计 - 针对大屏幕优化显示 */
@media (min-width: 768px) {
    .instruction-image {
        max-width: 600px; /* 在较大屏幕上限制最大宽度 */
    }
}

@media (min-width: 1200px) {
    .instruction-image {
        max-width: 700px; /* 在超大屏幕上进一步限制 */
    }
}

/* 确保 instructions 容器能够容纳图片 */
.instructions {
    line-height: 1.6;
    overflow-x: hidden; /* 防止横向滚动 */
}

/* 为小屏幕设备优化 */
@media (max-width: 480px) {
    .instruction-images {
        gap: 10px;
        margin: 10px 0;
    }
    
    .instruction-image {
        border-radius: 6px;
    }
}