@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Fira+Code:wght@500&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

:root {
    --color-bg-primary: #0f1419;
    --color-bg-secondary: #1a1f2e;
    --color-bg-tertiary: #2d3748;
    --color-bg-glass: rgba(26, 31, 46, 0.8);
    --color-bg-card: rgba(26, 31, 46, 0.9);
    --color-border: rgba(139, 148, 158, 0.12);
    --color-border-hover: rgba(139, 148, 158, 0.2);
    --color-text-primary: #e2e8f0;
    --color-text-secondary: #a0aec0;
    --color-text-tertiary: #718096;
    --color-accent: #4fd1c7;
    --color-accent-light: #81e6d9;
    --color-accent-dark: #2c7a7b;
    --color-success: #48bb78;
    --color-warning: #ed8936;
    --color-error: #f56565;
    --color-gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --color-gradient-accent: linear-gradient(135deg, #4fd1c7 0%, #38b2ac 100%);
    --font-primary: 'Inter', 'Noto Sans SC', sans-serif;
    --font-mono: 'Fira Code', monospace;
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --transition-speed: 0.3s;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.2);
}

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

body {
    font-family: var(--font-primary);
    background: var(--color-bg-primary);
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(79, 209, 199, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(118, 75, 162, 0.05) 0%, transparent 50%);
    color: var(--color-text-primary);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.header {
    text-align: center;
    margin-bottom: 0;
    padding: 20px 0;
}

.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 28px;
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    transition: all var(--transition-speed) ease;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-gradient-accent);
    opacity: 0.6;
}

.card:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

.header {
    text-align: left;
    margin-bottom: 0;
    padding: 40px 0;
}

.header h1 {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 12px;
    background: var(--color-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.header h1 .accent {
    background: var(--color-gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    max-width: 600px;
}

.doh-list-container {
    min-height: 400px;
}

.doh-list-header {
    display: grid;
    grid-template-columns: 1fr 3fr 1fr 1fr 1fr;
    padding: 0 20px;
    margin-bottom: 10px;
    color: var(--color-text-tertiary);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.doh-item {
    display: flex;
    flex-direction: column;
    background: var(--color-bg-secondary);
    padding: 0;
    border-radius: var(--border-radius-sm);
    margin-bottom: 12px;
    border: 1px solid var(--color-border);
    transition: all var(--transition-speed) ease;
    cursor: pointer;
    position: relative;
    overflow: visible;
}

.doh-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-accent);
    transform: scaleY(0);
    transition: transform var(--transition-speed) ease;
}

.doh-item:hover {
    background: var(--color-bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-hover);
}

.doh-item:hover::before {
    transform: scaleY(1);
}

.doh-item-main {
    display: grid;
    grid-template-columns: 1fr 3fr 1fr 1fr 1fr;
    align-items: center;
    padding: 18px 24px 12px 24px;
}

.doh-item-details {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 30px;
    padding: 12px 24px 18px 24px;
    border-top: 1px solid var(--color-border);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 0 0 var(--border-radius-sm) var(--border-radius-sm);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.doh-item-details > div {
    display: flex;
    align-items: center;
    gap: 6px;
}

.doh-item-details .ip-label,
.doh-item-details .location-label,
.doh-item-details .org-label {
    font-weight: 600;
    color: var(--color-text-tertiary);
    flex-shrink: 0;
}

.doh-item-details .ip-value {
    font-family: var(--font-mono);
    color: var(--color-text-primary);
    font-weight: 500;
}

.doh-item-details .location-value,
.doh-item-details .org-value {
    color: var(--color-text-secondary);
}

.doh-provider {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.provider-logo {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.doh-url {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-text-primary);
    font-weight: 600;
    word-break: break-all;
    line-height: 1.4;
    max-width: 100%;
}

.status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    transition: all var(--transition-speed) ease;
    flex-shrink: 0;
}
.status-dot.testing { background-color: var(--color-warning); animation: pulse 1.5s infinite; }
.status-dot.success { background-color: var(--color-success); }
.status-dot.error { background-color: var(--color-error); }

.response-time {
    font-weight: 500;
    font-size: 0.9rem;
}
.response-time.fast { color: var(--color-success); }
.response-time.medium { color: var(--color-warning); }
.response-time.slow { color: var(--color-error); }

.pollution-status {
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
}
.pollution-status.clean { color: var(--color-success); }
.pollution-status.suspicious { color: var(--color-error); }

/* 污染状态的DoH服务地址样式 */
.doh-url.polluted {
    color: var(--color-error) !important;
    text-decoration: line-through;
    opacity: 0.8;
    transition: all var(--transition-speed) ease;
}

.doh-url.polluted:hover {
    opacity: 1;
}

/* 污染状态的服务商样式 */
.doh-provider.polluted {
    color: var(--color-error) !important;
    text-decoration: line-through;
    opacity: 0.8;
    transition: all var(--transition-speed) ease;
}

.doh-provider.polluted:hover {
    opacity: 1;
}

/* 污染状态的状态点样式 */
.status-dot.polluted {
    background-color: var(--color-error);
}

.loading-skeleton .doh-item > div {
    background: var(--color-bg-tertiary);
    color: transparent;
    border-radius: 4px;
    -webkit-user-select: none;
    user-select: none;
    animation: skeleton-pulse 1.5s infinite;
}
.loading-skeleton .doh-item .provider-logo { background: transparent; }

@keyframes skeleton-pulse {
    0%, 100% { 
        opacity: 1; 
        background-color: var(--color-bg-tertiary);
    }
    50% { 
        opacity: 0.6; 
        background-color: var(--color-bg-secondary);
    }
}

.stats-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-item {
    background: var(--color-bg-secondary);
    padding: 20px 18px;
    border-radius: var(--border-radius-sm);
    text-align: center;
    border: 1px solid var(--color-border);
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-gradient-accent);
}

.stat-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--color-gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

/* 网络信息样式 */
.network-info {
    margin-top: 20px;
    padding: 20px;
    background: var(--color-bg-secondary);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border);
}

.network-info.hidden {
    display: none;
}

.network-title {
    font-size: 1.1rem;
    color: var(--color-text-primary);
    margin: 0;
    font-weight: 600;
}

.network-container {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 12px;
}

.network-details {
    display: flex;
    flex: 1;
    justify-content: flex-end;
    align-items: center;
    gap: 30px;
}

.network-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.network-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    min-width: 70px;
}

.network-value {
    font-size: 0.9rem;
    color: var(--color-text-primary);
    font-weight: 600;
}

.ip-address {
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all var(--transition-speed) ease;
}

.ip-address:hover {
    background: var(--color-bg-primary);
    color: var(--color-accent);
}

.isp-info {
    margin-left: 8px;
    color: var(--color-text-secondary);
    font-weight: 500;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all var(--transition-speed) ease;
}

.isp-info:hover {
    background: var(--color-bg-primary);
    color: var(--color-accent);
}

.location-info {
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all var(--transition-speed) ease;
}

.location-info:hover {
    background: var(--color-bg-primary);
    color: var(--color-accent);
}

.proxy-warning {
    margin-top: 12px;
    padding: 8px 12px;
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: var(--border-radius-sm);
    text-align: center;
}

.proxy-warning.hidden {
    display: none;
}

.proxy-warning small {
    color: #ffc107;
    font-size: 0.8rem;
}

.refresh-btn {
    background: var(--color-gradient-accent);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    min-width: 120px;
}

.refresh-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.refresh-btn:hover::before {
    left: 100%;
}

.refresh-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.refresh-btn:active {
    transform: translateY(0);
}

.refresh-btn:disabled {
    background: var(--color-bg-tertiary);
    color: var(--color-text-tertiary);
    cursor: not-allowed;
    transform: none;
}

.refresh-btn:disabled:hover {
    box-shadow: var(--shadow-sm);
}

.refresh-btn .icon.spinning {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(-360deg); }
}

.info-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 10px;
}

.info-card code {
    font-family: var(--font-mono);
    background: var(--color-bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.info-card strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.info-highlight {
    background: rgba(122, 162, 247, 0.1);
    border: 1px solid rgba(122, 162, 247, 0.2);
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
    font-size: 0.9rem;
}

.footer {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.footer a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
}
.footer a:hover {
    text-decoration: underline;
}

.copy-toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translate(-50%, 10px);
    background: var(--color-success);
    color: white;
    padding: 14px 28px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    z-index: 1000;
    opacity: 0;
    transition: all var(--transition-speed) ease;
    box-shadow: var(--shadow-md);
    font-size: 0.9rem;
}

.copy-toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

@keyframes pulse {
    0%, 100% { 
        opacity: 1; 
        transform: scale(1);
    }
    50% { 
        opacity: 0.7; 
        transform: scale(1.05);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@media (max-width: 1200px) {
    .container {
        padding: 30px 20px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 20px 15px;
    }
    
    .header {
        padding: 20px 0;
    }
    
    .header h1 {
        font-size: 2.2rem;
    }
    
    .header p {
        font-size: 1rem;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .refresh-btn {
        align-self: stretch;
        min-width: auto;
    }
    
    .doh-list-header {
        display: none;
    }
    
    .doh-item-main {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 20px;
    }
    
    .doh-item-main > div {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 8px 0;
        border-bottom: 1px solid var(--color-border);
    }
    
    .doh-item-main > div:last-child {
        border-bottom: none;
    }
    
    .doh-item-main > div::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--color-text-secondary);
        font-size: 0.9rem;
    }
    
    .doh-provider::before {
        display: none;
    }
    
    .doh-provider {
        flex-direction: row;
        font-size: 1.1rem;
    }
    
    .doh-url::before {
        display: none;
    }
    
    .doh-url {
        word-break: break-all;
        text-align: left;
        flex: 1;
        justify-content: flex-start;
    }
    
    .status {
        justify-content: flex-end;
    }
    
    .doh-item-details {
        display: grid;
        grid-template-columns: 1fr;
        gap: 0;
        justify-content: flex-start;
    }
    
    .doh-item-details > div {
        padding: 8px 0;
        border-bottom: 1px solid var(--color-border);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .doh-item-details > div:last-child {
        border-bottom: none;
    }
    
    .doh-item-details .ip-value,
    .doh-item-details .location-value,
    .doh-item-details .org-value {
        margin-left: 0;
        text-align: left;
    }
    
    .pollution-status {
        position: static;
    }
    
    .ip-tooltip {
        position: fixed;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        margin-bottom: 0;
        max-width: calc(100vw - 40px);
    }
    
    .ip-tooltip::after {
        top: auto;
        bottom: 100%;
        border-top-color: transparent;
        border-bottom-color: var(--color-bg-primary);
    }
    
    .stats-summary {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    
    .stat-item {
        padding: 16px 12px;
    }
    
    .stat-value {
        font-size: 1.6rem;
    }

    /* 移动端网络信息样式 */
    .network-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .network-details {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .network-item {
        flex-direction: row;
        align-items: center;
        gap: 8px;
        flex-wrap: wrap;
        width: 100%;
    }

    .network-label {
        min-width: auto;
        font-size: 0.8rem;
    }

    .network-value {
        font-size: 0.85rem;
    }

    .isp-info {
        margin-left: 4px;
    }
}