/* ============================================
   tools.css — 地理实用工具页面共享样式
   ============================================ */

/* ---- Tool Page Hero ---- */
.tool-hero {
    min-height: 45vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, #0a1628 0%, #1a3a5c 40%, #0d2137 100%);
    padding-top: 72px;
}

.tool-hero-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 1;
}

.tool-hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 var(--space-lg);
}

.tool-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.15);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    margin-bottom: var(--space-lg);
    letter-spacing: 0.05em;
}

.tool-hero-badge .dot {
    width: 8px; height: 8px;
    background: var(--color-primary-light);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.tool-hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.tool-hero-title .highlight {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tool-hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: rgba(255,255,255,0.75);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* ---- Breadcrumb ---- */
.tool-breadcrumb {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--space-md) 0;
}

.tool-breadcrumb .container {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.tool-breadcrumb a {
    color: var(--color-secondary);
    transition: var(--transition-fast);
}

.tool-breadcrumb a:hover {
    color: var(--color-secondary-dark);
}

.tool-breadcrumb .sep {
    color: var(--color-text-muted);
}

.tool-breadcrumb .current {
    color: var(--color-text);
    font-weight: 500;
}

/* ---- Tool Workspace ---- */
.tool-workspace {
    padding: var(--space-3xl) 0;
    background: var(--color-bg);
}

.tool-workspace-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: var(--space-2xl);
    align-items: start;
}

/* ---- Tool Panel ---- */
.tool-panel {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
}

.tool-panel-header {
    padding: var(--space-xl) var(--space-2xl);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.tool-panel-icon {
    width: 48px; height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-sky), var(--color-sky-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tool-panel-header h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--color-text);
    margin: 0;
}

.tool-panel-header p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin: 0;
}

.tool-panel-body {
    padding: var(--space-2xl);
}

/* ---- Tabs ---- */
.tool-tabs {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-xl);
    border-bottom: 2px solid var(--color-border-light);
    padding-bottom: var(--space-xs);
}

.tool-tab {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
}

.tool-tab:hover {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
}

.tool-tab.active {
    color: var(--color-primary);
    background: var(--color-sky);
}

.tool-tab.active::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 20%;
    right: 20%;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

.tool-tab-panel {
    display: none;
}

.tool-tab-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- Form Elements ---- */
.tool-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.tool-form-grid.full {
    grid-template-columns: 1fr;
}

.tool-form-group {
    margin-bottom: var(--space-lg);
}

.tool-form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
    letter-spacing: 0.02em;
}

.tool-form-group input,
.tool-form-group select,
.tool-form-group textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    transition: var(--transition-fast);
}

.tool-form-group input:focus,
.tool-form-group select:focus,
.tool-form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(46,125,50,0.1);
}

.tool-form-group .hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.tool-form-row {
    display: flex;
    gap: var(--space-md);
    align-items: flex-end;
}

.tool-form-row .tool-form-group {
    flex: 1;
}

/* ---- Result Box ---- */
.tool-result-box {
    margin-top: var(--space-xl);
    padding: var(--space-xl);
    background: linear-gradient(135deg, #E8F5E9, #E3F2FD);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
    display: none;
}

.tool-result-box.show {
    display: block;
    animation: fadeIn 0.4s ease;
}

.tool-result-box .result-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(0,0,0,0.06);
}

.result-row:last-child {
    border-bottom: none;
}

.result-row .result-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.result-row .result-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    font-family: var(--font-mono);
}

.result-row .result-value.highlight {
    color: var(--color-primary);
    font-size: 1.25rem;
}

/* ---- Tool Sidebar ---- */
.tool-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.tool-info-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
}

.tool-info-card h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    padding: var(--space-lg) var(--space-xl);
    margin: 0;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.tool-info-card .info-body {
    padding: var(--space-xl);
}

.tool-info-card .info-body p,
.tool-info-card .info-body li {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-sm);
}

.tool-info-card .info-body ul {
    padding-left: var(--space-lg);
    list-style: disc;
}

.tool-info-card .info-body li {
    margin-bottom: var(--space-xs);
}

.tool-info-card .formula {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-text);
    margin: var(--space-md) 0;
    overflow-x: auto;
    border: 1px solid var(--color-border-light);
}

/* ---- Canvas Figure ---- */
.tool-figure {
    width: 100%;
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, #0a1628, #1a3a5c);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

.tool-figure canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.tool-figure-caption {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-align: center;
    margin-top: var(--space-sm);
    font-style: italic;
}

/* ---- Knowledge Section ---- */
.tool-knowledge {
    padding: var(--space-4xl) 0;
    background: var(--color-card);
}

.tool-knowledge-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
}

.knowledge-block h3 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.knowledge-block p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.knowledge-block table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    margin-top: var(--space-md);
}

.knowledge-block th,
.knowledge-block td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

.knowledge-block th {
    background: var(--color-bg);
    font-weight: 600;
    color: var(--color-text);
}

.knowledge-block td {
    color: var(--color-text-secondary);
}

/* ---- Related Tools ---- */
.tool-related {
    padding: var(--space-3xl) 0;
    background: var(--color-bg);
}

.related-tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.related-tool-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
    text-align: center;
    cursor: pointer;
}

.related-tool-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: var(--color-primary-light);
}

.related-tool-card .rt-icon {
    width: 56px; height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-sky), var(--color-sky-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin: 0 auto var(--space-lg);
}

.related-tool-card h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.related-tool-card p {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ---- Tool Index Cards (for atlas homepage) ---- */
.tools-index-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.tool-index-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
    transition: var(--transition-base);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.tool-index-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
    border-color: transparent;
}

.tool-index-card .tic-visual {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #0a1628, #1a3a5c);
    position: relative;
    overflow: hidden;
}

.tool-index-card .tic-visual canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.tool-index-card .tic-body {
    padding: var(--space-xl);
}

.tool-index-card .tic-tags {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
}

.tool-index-card .tic-tag {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.tool-index-card h3 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.tool-index-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.tool-index-card .tic-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

.tool-index-card .tic-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    transition: gap var(--transition-fast);
}

.tool-index-card:hover .tic-link {
    gap: 8px;
    color: var(--color-secondary-dark);
}

.tool-index-card .tic-status {
    font-size: 0.75rem;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.tic-status.ready {
    background: #E8F5E9;
    color: var(--color-primary-dark);
}

.tic-status.coming {
    background: #FFF3E0;
    color: var(--color-accent);
}

/* ---- Preset Buttons ---- */
.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.preset-btn {
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    border: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: var(--transition-fast);
}

.preset-btn:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* ---- City Time Cards ---- */
.city-time-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.city-time-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid var(--color-border-light);
    text-align: center;
    transition: var(--transition-fast);
}

.city-time-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
}

.city-time-card .ct-city {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.city-time-card .ct-time {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.city-time-card .ct-offset {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ---- Comparison Table ---- */
.tool-table-wrap {
    overflow-x: auto;
    margin-top: var(--space-lg);
}

.tool-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    min-width: 500px;
}

.tool-table th,
.tool-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

.tool-table th {
    background: var(--color-bg);
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tool-table td {
    color: var(--color-text-secondary);
}

.tool-table tr:hover td {
    background: var(--color-sky);
}

/* ---- Responsive ---- */
@media (max-width: 1023px) {
    .tool-workspace-grid {
        grid-template-columns: 1fr;
    }
    .tool-knowledge-grid {
        grid-template-columns: 1fr;
    }
    .related-tools-grid {
        grid-template-columns: 1fr;
    }
    .tools-index-grid {
        grid-template-columns: 1fr;
    }
    .tool-form-grid {
        grid-template-columns: 1fr;
    }
    .city-time-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 479px) {
    .tool-panel-body {
        padding: var(--space-lg);
    }
    .tool-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    .tool-form-row {
        flex-direction: column;
        align-items: stretch;
    }
}