/* ==========================================================================
   1. Global Styles & Variables
   ========================================================================== */
:root {
    --primary-color: #0055ff;
    --primary-hover: #0044cc;
    --primary-light: #e6f0ff;
    --text-color: #333;
    --text-secondary: #666;
    --border-color: #ddd;
    --bg-color: #f5f5f5;
    --card-bg: #fff;
    --success-color: #52c41a;
    --disabled-color: #ccc;
    --header-height: 70px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    /* Prevent overall horizontal scroll; handle overflows within containers */
    overflow-x: hidden;
    width: 100%;
}

/* Prevent translation flicker during load */
[data-i18n] {
    visibility: hidden;
}

.i18n-ready [data-i18n] {
    visibility: visible;
}

/* ==========================================================================
   2. Header
   ========================================================================== */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0066ff 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    width: 100%;
    position: relative;
    z-index: 100;
    /* Fix horizontal scroll background break */
    display: block;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* Allow wrapping on narrow screens */
    flex-wrap: wrap;
    gap: 15px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.logo-wide {
    height: 26px;
    width: auto;
    object-fit: contain;
}

.logo .subtitle {
    font-size: 13px;
    font-weight: 400;
    opacity: 0.7;
    padding-left: 16px;
    border-left: 1px solid rgba(255, 255, 255, 0.3);
    margin-left: 4px;
    white-space: nowrap;
}

/* Controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.official-link a {
    color: white;
    text-decoration: none;
    font-size: 13px;
    opacity: 0.8;
    transition: opacity 0.2s;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
}

.official-link a:hover {
    opacity: 1;
}

.external-icon {
    opacity: 0.7;
}

/* Language Dropdown */
.language-dropdown {
    position: relative;
    display: inline-block;
}

.dropbtn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: white;
    height: 32px;
    padding: 0 12px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
}

.dropbtn::after {
    content: "";
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid white;
    opacity: 0.7;
}

.language-dropdown:hover .dropbtn {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    padding-top: 5px;
    background-color: transparent;
    min-width: 120px;
    z-index: 1001;
}

/* Actual content container with background and border-radius */
.dropdown-inner {
    background-color: white;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
}

/* Invisible bridge to ensure mouse path continuity */
.dropdown-content::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 10px;
    background: transparent;
}

.dropdown-inner a {
    color: var(--text-color);
    padding: 10px 16px;
    text-decoration: none;
    display: block;
    font-size: 13px;
    transition: background 0.2s;
}

.dropdown-inner a:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

.language-dropdown:hover .dropdown-content {
    display: block;
}

/* Version Selector */
.version-selector {
    display: flex;
    align-items: center;
    gap: 10px;
}

.version-label {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}

.version-select {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    height: 32px;
    padding: 0 36px 0 12px;
    font-size: 13px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 120px;

    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;

    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2'><polyline points='6 9 12 15 18 9'/></svg>");

    background-repeat: no-repeat;
    background-position: right 12px center;
}

.version-select:hover {
    background: rgba(255, 255, 255, 0.25);
}

.version-select option {
    background: white;
    color: var(--text-color);
}

/* ==========================================================================
   3. Main Layout
   ========================================================================== */
main {
    max-width: 1400px;
    margin: 30px auto;
    padding: 0 30px;
    width: 100%;
}

.container {
    display: grid;
    /* Desktop: fixed 400px left, adaptive right */
    grid-template-columns: 400px 1fr;
    gap: 30px;
    align-items: start;
}

.selector-panel,
.result-panel {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    min-width: 0;
}

.selector-panel h2,
.result-panel h2 {
    font-size: 22px;
    margin-bottom: 24px;
    color: var(--text-color);
    font-weight: 600;
}

/* ==========================================================================
   4. Components
   ========================================================================== */

/* 4.1 Tooltip Icon */
.tooltip-icon {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 16px !important;
    height: 16px !important;
    border-radius: 50% !important;
    background-color: var(--primary-light) !important;
    color: var(--primary-color) !important;
    font-size: 11px !important;
    font-weight: 700 !important;
    font-family: Arial, sans-serif !important;
    line-height: 1 !important;
    cursor: help !important;
    position: relative !important;
    margin: 0 !important;
    opacity: 1 !important;
    transition: all 0.2s ease !important;
}

.tooltip-icon:hover {
    background-color: var(--primary-color) !important;
    color: white !important;
}

/* Remove external interference */
.option-button .tooltip-icon {
    flex-shrink: 0 !important;
}

.option-button.active .tooltip-icon {
    background-color: white !important;
    color: var(--primary-color) !important;
}

/* Tooltip Popup - Allow interaction */
.tooltip-content {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    transform: translateX(-10px);
    background-color: #1a1a1a !important;
    color: #ffffff !important;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    white-space: normal;
    width: 260px;
    opacity: 0;
    visibility: hidden;
    /* Disable interaction when hidden to prevent premature triggering */
    pointer-events: none;
    z-index: 10000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    line-height: 1.6;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.25);
    transition: opacity 0.2s ease,
    visibility 0.2s ease;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

/* Connection bridge to prevent disappearance when moving to popup */
.tooltip-content::before {
    content: "";
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 10px;
    background: transparent;
}

.tooltip-icon:hover .tooltip-content {
    opacity: 1 !important;
    visibility: visible !important;
    /* Enable interaction only when visible */
    pointer-events: auto !important;
}

.tooltip-content a {
    color: #4da6ff;
    text-decoration: underline;
    font-weight: 600;
}

.tooltip-content a:hover {
    color: #80bfff;
}

/* 4.2 Buttons */
.option-button {
    height: 42px;
    padding: 0 15px;
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    /* Prevent text cut-off issues with Tooltips */
    overflow: visible;
    white-space: nowrap;
}

.option-button:hover:not(:disabled):not(.active) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.option-button.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.option-button:disabled {
    cursor: not-allowed;
    background: var(--bg-color);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

/* 4.3 Selector Layout */
.selector-group {
    margin-bottom: 24px;
}

.selector-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 10px;
}

.label-with-tooltip {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.label-with-tooltip .selector-label {
    margin-bottom: 0;
}

/* Inline Selector Groups (2:4 ratio) */
.selector-group-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 24px;
}

.selector-item.flex-2 {
    flex: 2;
    min-width: 200px;
}

.selector-item.flex-4 {
    flex: 4;
    min-width: 200px;
}

/* 4.4 Grids */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 10px;
}

.button-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.button-grid .option-button {
    flex: 1;
    min-width: 110px;
}

/* Inputs */
.select-input {
    width: 100%;
    padding: 10px 40px 10px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    background: white;
    cursor: pointer;
    height: 42px;

    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;

    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'><polyline points='6 9 12 15 18 9'/></svg>");

    background-repeat: no-repeat;
    background-position: right 14px center;
}

.select-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Checkboxes */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
}

.checkbox-item input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

/* 4.5 Image List Tab */
.image-tabs-container {
    border: 2px solid var(--border-color);
    border-radius: 12px;
    overflow: visible;
    margin-bottom: 20px;
    background: #fff;
    overflow: hidden;
}

.image-tabs-header {
    display: flex;
    background: var(--bg-color);
    border-bottom: 2px solid var(--border-color);
    overflow-x: auto;
    scrollbar-width: none;
    border-radius: 10px 10px 0 0;
}

.image-tab {
    padding: 12px 30px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    text-align: center;
    transition: all 0.2s ease;
}

.image-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Output */
.commands-output {
    background: #1e1e1e;
}

.code-block-wrapper {
    position: relative;
}

.image-commands {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 20px;
    font-family: "Monaco", "Consolas", monospace;
    font-size: 13px;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre;
    min-height: 200px;
    max-height: 500px;
    margin: 0;
    border: none;
}

.copy-icon-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 6px;
    padding: 8px;
    cursor: pointer;
    color: #d4d4d4;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 4.6 Offline Guide */
.offline-guide-module {
    margin-top: 20px;
    background: #fff;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    overflow: hidden;
}

.guide-summary {
    padding: 12px 20px;
    cursor: pointer;
    font-weight: 600;
    list-style: none;
    display: flex;
    align-items: center;
    user-select: none;
    transition: background 0.2s;
}

.guide-summary:hover {
    background: var(--bg-color);
}

.guide-summary::after {
    content: "";
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid currentColor;
    margin-left: auto;
    transition: transform 0.2s;
}

details[open] .guide-summary::after {
    transform: rotate(180deg);
}

.guide-summary::-webkit-details-marker {
    display: none;
}

.guide-container {
    border-top: 1px solid var(--border-color);
}

.guide-header {
    background: var(--bg-color);
    padding: 10px 20px 0;
    border-bottom: 1px solid var(--border-color);
}

.guide-tabs {
    display: flex;
    gap: 10px;
}

.guide-tab {
    padding: 10px 15px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
}

.guide-tab:hover {
    color: var(--primary-color);
}

.guide-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.guide-body {
    padding: 20px;
}

.guide-content {
    display: none;
}

.guide-content.active {
    display: block;
}

.guide-content p {
    font-size: 14px;
    margin-bottom: 15px;
}

.guide-content ol {
    padding-left: 20px;
}

.guide-content li {
    font-size: 14px;
    margin-bottom: 10px;
    color: var(--text-secondary);
}

.guide-content pre {
    background: #f8f9fa;
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: 6px;
    margin: 8px 0;
    font-family: "Monaco", "Consolas", monospace;
    font-size: 12px;
    overflow-x: auto;
    color: var(--text-color);
}

.guide-footer {
    padding: 12px 20px;
    background: #fdfdfd;
    border-top: 1px solid var(--border-color);
    text-align: right;
}

/* Toast */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--success-color);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    z-index: 10000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==========================================================================
   5. Responsive Adaptation
   ========================================================================== */

@media (max-width: 1024px) {
    .container {
        grid-template-columns: 1fr;
        max-width: 800px;
        margin: 30px auto;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 15px 20px;
    }

    .logo-wide {
        height: 24px;
    }

    .logo .subtitle,
    .version-label {
        display: none;
    }

    .version-select {
        min-width: auto;
        padding: 6px 10px;
    }

    main {
        padding: 0 15px;
        margin: 20px auto;
    }

    .selector-panel,
    .result-panel {
        padding: 20px;
    }

    .selector-group-inline {
        flex-direction: column;
        gap: 20px;
    }

    .selector-item.flex-2,
    .selector-item.flex-4 {
        flex: none;
        width: 100%;
        min-width: 0;
    }

    .button-grid,
    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)) !important;
        gap: 8px;
    }

    .button-grid .option-button {
        min-width: 90px;
    }

    .option-button {
        height: 38px;
        font-size: 13px;
        padding: 0 8px;
    }

    .image-tabs-header {
        display: flex;
        overflow-x: auto;
    }

    .image-tab {
        flex: 1;
        padding: 10px 15px;
    }

    .guide-tabs {
        overflow-x: auto;
        white-space: nowrap;
    }

    .guide-tab {
        flex: 0 0 auto;
    }
}