/**
 * 首页样式 - 浅蓝色主题
 */
.header {
    max-width: 1200px;
    margin: 0 auto 30px;
    text-align: center;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 25px;
    font-size: 14px;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.nav-links a:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.main-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    padding: 40px;
    width: 100%;
}

h1 {
    color: white;
    text-align: center;
    margin-bottom: 10px;
    font-size: 42px;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    color: rgba(255, 255, 255, 0.95);
    text-align: center;
    font-size: 16px;
    margin-bottom: 30px;
}

.ip-display {
    background: linear-gradient(135deg, #4a9eff 0%, #6bb6ff 50%, #a8d8f0 100%);
    color: white;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    margin-bottom: 30px;
    position: relative;
    overflow: hidden;
}

.ip-display::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.ip-display .ip-label {
    font-size: 14px;
    opacity: 0.95;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.ip-display .ip-value {
    font-size: 42px;
    font-weight: bold;
    font-family: 'Courier New', monospace;
    word-break: break-all;
    position: relative;
    z-index: 1;
}

.ip-type-badge {
    display: inline-block;
    margin-left: 15px;
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    font-size: 12px;
    font-weight: normal;
    backdrop-filter: blur(10px);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.info-item {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    padding: 20px;
    border-radius: 12px;
    border-left: 4px solid #4a9eff;
    transition: transform 0.2s, box-shadow 0.2s;
}

.info-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(74, 158, 255, 0.3);
}

.info-item .label {
    font-size: 12px;
    color: #666;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.info-item .value {
    font-size: 18px;
    color: #333;
    font-weight: 600;
}

.info-item .value.empty {
    color: #999;
    font-style: italic;
    font-weight: normal;
}

.loading {
    text-align: center;
    padding: 60px 20px;
    color: #666;
    font-size: 18px;
}

.loading::after {
    content: '...';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

.error {
    background: #fee;
    color: #c33;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    margin-top: 20px;
    border-left: 4px solid #c33;
}

.query-form {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 2px solid #eee;
}

.query-form h2 {
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-group {
    display: flex;
    gap: 10px;
}

.input-group input {
    flex: 1;
    padding: 14px 20px;
    border: 2px solid #ddd;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--sea-blue);
    box-shadow: 0 0 0 3px rgba(0, 119, 182, 0.12);
}

.input-group button {
    padding: 14px 30px;
    background: linear-gradient(135deg, var(--sea-blue) 0%, var(--sea-blue-3) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.input-group button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 119, 182, 0.35);
}

.input-group button:active {
    transform: translateY(0);
}

.query-hint {
    margin-top: 12px;
    font-size: 13px;
    color: #666;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.feature-card {
    background: linear-gradient(135deg, #e3f2fd 0%, #ffffff 100%);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid #bbdefb;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(74, 158, 255, 0.2);
    border-color: var(--sea-blue);
}

.feature-card .icon {
    font-size: 32px;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.api-preview {
    background: #1f2937;
    color: #f9fafb;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    overflow-x: auto;
}

.api-preview code {
    color: #6bb6ff;
}

.api-link-btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--sea-blue) 0%, var(--sea-blue-3) 100%);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s;
}

.api-link-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 119, 182, 0.35);
}

/* 平板及手机横屏 */
@media (max-width: 768px) {
    body {
        padding: 12px;
        padding-top: max(12px, env(safe-area-inset-top, 0px));
        padding-right: max(12px, env(safe-area-inset-right, 0px));
        padding-bottom: max(12px, env(safe-area-inset-bottom, 0px));
        padding-left: max(12px, env(safe-area-inset-left, 0px));
    }
    
    h1 {
        font-size: 28px;
    }
    
    .subtitle {
        font-size: 14px;
        margin-bottom: 20px;
    }
    
    .nav-links {
        gap: 10px;
        margin-bottom: 16px;
    }
    
    .nav-links a {
        padding: 12px 20px;
        font-size: 14px;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    
    .main-container {
        gap: 20px;
    }
    
    .container {
        padding: 20px;
    }
    
    .ip-display {
        padding: 24px 16px;
        margin-bottom: 24px;
    }
    
    .ip-display .ip-label {
        margin-bottom: 10px;
    }
    
    .ip-display .ip-value {
        font-size: 26px;
        word-break: break-all;
    }
    
    .ip-type-badge {
        display: block;
        margin: 8px 0 0;
        width: fit-content;
        margin-left: auto;
        margin-right: auto;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        gap: 12px;
        margin-top: 20px;
    }
    
    .info-item {
        padding: 16px;
    }
    
    .info-item .value {
        font-size: 16px;
    }
    
    .loading {
        padding: 40px 16px;
        font-size: 16px;
    }
    
    .query-form {
        margin-top: 20px;
        padding-top: 20px;
    }
    
    .query-form h2 {
        font-size: 18px;
        flex-wrap: wrap;
    }
    
    .input-group {
        flex-direction: column;
        gap: 12px;
    }
    
    .input-group input,
    .input-group button {
        padding: 14px 18px;
        font-size: 16px;
        min-height: 48px;
    }
    
    .input-group button {
        width: 100%;
    }
    
    .query-hint {
        font-size: 12px;
        line-height: 1.5;
    }
    
    .features {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 20px;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .feature-card .icon {
        font-size: 28px;
    }
    
    .feature-card h3 {
        font-size: 17px;
    }
    
    .feature-card p {
        font-size: 13px;
    }
    
    .main-container .container h2 {
        font-size: 20px !important;
        margin-bottom: 16px !important;
    }
    
    .api-preview {
        padding: 16px;
        font-size: 12px;
        margin-top: 16px;
        -webkit-overflow-scrolling: touch;
        border-radius: 8px;
    }
    
    .api-preview code {
        word-break: break-all;
        overflow-wrap: anywhere;
    }
    
    .api-link-btn {
        padding: 14px 24px;
        font-size: 15px;
        min-height: 48px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    
    .error {
        padding: 16px;
        font-size: 14px;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    body {
        padding: 10px;
        padding-top: max(10px, env(safe-area-inset-top, 0px));
        padding-right: max(10px, env(safe-area-inset-right, 0px));
        padding-bottom: max(10px, env(safe-area-inset-bottom, 0px));
        padding-left: max(10px, env(safe-area-inset-left, 0px));
    }
    
    h1 {
        font-size: 24px;
    }
    
    .subtitle {
        font-size: 13px;
    }
    
    .nav-links a {
        padding: 10px 16px;
        font-size: 13px;
    }
    
    .container {
        padding: 16px;
    }
    
    .ip-display {
        padding: 20px 12px;
        margin-bottom: 20px;
    }
    
    .ip-display .ip-value {
        font-size: 22px;
    }
    
    .info-item {
        padding: 14px;
    }
    
    .info-item .value {
        font-size: 15px;
    }
    
    .query-form h2 {
        font-size: 17px;
    }
    
    .input-group input,
    .input-group button {
        padding: 12px 16px;
        min-height: 44px;
    }
    
    .main-container .container h2 {
        font-size: 18px !important;
    }
    
    .api-preview {
        padding: 12px;
        font-size: 11px;
    }
    
    .api-preview code {
        font-size: inherit;
    }
}