* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", Arial, sans-serif;
}

:root {
    --bg-color: #f5f7fa;
    --text-color: #333;
    --card-bg: #fff;
    --border-color: #e57eb;
    --hover-color: #f9fafb;
    --btn-bg: #4e6ef2;
    --btn-hover: #4662d0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    --accent-color: #4e6ef2;
}

.dark-mode {
    --bg-color: #121212;
    --text-color: #e5e7eb;
    --card-bg: #1f1f1f;
    --border-color: #333;
    --hover-color: #272727;
    --btn-bg: #5a74f5;
    --btn-hover: #4f67e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    --accent-color: #6078f3;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.top-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.time-display {
    font-size: 18px;
    font-weight: 600;
    color: var(--accent-color);
    display: flex;
    flex-direction: column;
}

.date-display {
    font-size: 13px;
    font-weight: 400;
    color: var(--text-color);
    margin-top: 2px;
}

.greeting-text {
    font-size: 16px;
    font-weight: 500;
    opacity: 0.8;
}

.top-right {
    display: flex;
    align-items: center;
    gap: 15px;
}
.weather-widget {
    line-height: 1;
    background-color: var(--card-bg);
    padding: 0;
    border-radius: 6px;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
    overflow: hidden;
    width: 280px;
    height: 60px;
}

.weather-widget:hover {
    transform: translateY(-2px);
}

.weather-widget iframe {
    width: 100% !important;
    height: 100% !important;
    display: block;
    border: none;
}

.btn-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.func-btn {
    padding: 6px 12px;
    background-color: var(--btn-bg);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.func-btn:hover {
    background-color: var(--btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.container {
    flex: 1;
    padding: 20px 0;
}

.logo {
    text-align: center;
    margin-bottom: 20px;
}

.logo a {
    display: inline-block;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.logo a:hover {
    transform: scale(1.05) rotate(2deg);
}

.logo img {
    height: 80px;
    transition: opacity 0.3s, filter 0.3s;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.dark-mode .logo img {
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.search-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 25px;
    gap: 0;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    transition: all 0.3s;
}

.search-wrap:focus-within {
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.search-left {
    display: flex;
    align-items: center;
    background-color: transparent;
    border: none;
    padding: 0 14px;
    height: 48px;
    flex: 1;
}

.engine-icon {
    width: 24px;
    height: 24px;
    margin-right: 12px;
    border-radius: 4px;
    object-fit: contain;
}

select#engine-select {
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-color);
    font-size: 14px;
    cursor: pointer;
    margin-right: 15px;
    padding: 2px 0;
    border-right: 1px solid var(--border-color);
    padding-right: 15px;
    transition: color 0.2s;
}

select#engine-select:hover {
    color: var(--accent-color);
}

input#search-input {
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-color);
    font-size: 16px;
    padding: 0 12px;
    width: 100%;
    height: 46px;
}

input#search-input::placeholder {
    color: #999;
    transition: opacity 0.2s;
}

.search-wrap:focus-within input#search-input::placeholder {
    opacity: 0.7;
}

button#search-btn {
    padding: 0 25px;
    height: 48px;
    font-size: 16px;
    font-weight: 500;
    background-color: var(--btn-bg);
    color: white;
    border: none;
    border-radius: 0 8px 8px 0;
    cursor: pointer;
    transition: all 0.2s;
}

button#search-btn:hover {
    background-color: var(--btn-hover);
}

.nav-container {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 15px;
    margin-bottom: 15px;
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(10, 1fr); 
    grid-template-rows: repeat(3, auto);  
    gap: 12px;
    justify-items: center;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-color);
    font-size: 12px;
    padding: 10px 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    min-width: 60px;
    width: 100%;
}

.nav-item:hover {
    transform: translateY(-3px);
    color: var(--accent-color);
    background-color: var(--hover-color);
}

.nav-item::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(96, 120, 243, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.nav-item:active::after {
    width: 150px;
    height: 150px;
    opacity: 0;
}

.nav-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 6px;
    background-color: var(--hover-color);
    overflow: hidden;
    transition: all 0.2s;
}

.nav-item:hover .nav-icon {
    background-color: rgba(96, 120, 243, 0.1);
}

.nav-icon img {
    width: 65%;
    height: 65%;
    object-fit: contain;
    transition: transform 0.3s;
}

.nav-item:hover .nav-icon img {
    transform: rotate(10deg) scale(1.1);
}

.daily-poem {
    margin: 0 auto 15px;
    padding: 10px 0;
    text-align: center;
    font-size: 18px;
    font-style: normal;
    color: var(--accent-color);
    font-family: "KaiTi", "楷体", "STKaiti", serif;
    border-top: none;
}

.daily-poem small {
    display: block;
    font-size: 11px;
    color: var(--text-color);
    opacity: 0.6;
    margin-top: 5px;
    font-style: normal;
    font-family: "Microsoft Yahei", Arial, sans-serif;
}

.copyright {
    text-align: center;
    margin-top: 0;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: #999;
    opacity: 0.8;
}

.confetti {
    position: fixed;
    width: 10px;
    height: 10px;
    background-color: var(--accent-color);
    border-radius: 50%;
    opacity: 0.7;
    pointer-events: none;
    animation: fall linear forwards, sway ease-in-out infinite;
    z-index: 9999;
}

@keyframes fall {
    to {
        transform: translateY(100vh);
        opacity: 0;
    }
}

@keyframes sway {
    0%, 100% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(15px);
    }
}

.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    background-size: 200% 100%;
    animation: loading 2s infinite linear;
    z-index: 9999;
    display: none;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

@media (max-width: 1200px) {
    .nav-grid {
        grid-template-columns: repeat(8, 1fr);
    }
}

@media (max-width: 768px) {
    .top-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .top-left, .top-right {
        width: 100%;
        justify-content: space-between;
    }
    
    .greeting-text {
        display: none;
    }
    
    .logo img {
        height: 60px;
    }
    
    .daily-poem {
        font-size: 16px;
        padding: 8px 0;
    }
    
    .nav-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 8px;
    }
}