/* css/header.css - Modern Design inspired by code.html */

/* Top Info Bar */
.top-info-bar {
    background-color: #0f172a;
    color: #94a3b8;
    font-size: 12px;
    padding: 8px 0;
}

.top-info-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-info-bar a {
    color: #94a3b8;
    margin-left: 16px;
}

.top-info-bar a:hover {
    color: #fff;
}

.top-info-links {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left:auto;

}

.top-info-links .link-btn {
    color: #94a3b8;
    cursor: pointer;
    transition: color 0.3s ease;
}

.top-info-links .link-btn:hover {
    color: #fff;
}

.top-info-links .divider {
    color: #475569;
}

/* Main Header */
.header-container {
    background-color: #fff;
    box-shadow: var(--shadow-soft);
    position: sticky;
    top: 0;
    z-index: 50;
    transition: var(--transition-base);
}

.top-bar {
    padding: 16px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background-color: var(--primary-color);
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: bold;
    font-size: 24px;
    box-shadow: var(--shadow-md);
}

.logo {
    height: 48px;
    margin-right: 12px;
}

.titles .cn-title {
    font-size: 38px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: 1px;
    line-height: 1.2;
}

.titles .en-title {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Search Box */
.search-box {
    position: relative;
    width: 280px;
}

.search-box input {
    width: 100%;
    padding: 10px 40px 10px 16px;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    background-color: #f9fafb;
    font-size: 14px;
    outline: none;
    transition: var(--transition-base);
}

.search-box input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

.search-box input::placeholder {
    color: var(--text-light);
}

.search-box button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    padding: 4px;
}

.search-box button:hover {
    color: var(--primary-dark);
}

/* Navigation Bar */
.nav-bar {
    background-color: #fff;
    border-top: 1px solid var(--border-color);
    padding: 0;
}

.nav-list {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 4px;
    padding: 12px 0;
}

.nav-list li {
    position: relative;
}

.nav-list li a {
    display: block;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-base);
    transition: var(--transition-base);
}

.nav-list li a:hover {
    background-color: var(--bg-body);
    color: var(--text-main);
}

.nav-list li.active a {
    background-color: var(--primary-color);
    color: #fff;
}

.nav-list li.active a:hover {
    background-color: var(--primary-dark);
    color: #fff;
}

/* Remove old separator */
.nav-list li::after {
    display: none;
}

/* Dark Mode Styles */
html.dark .top-info-bar {
    background-color: #030712;
    background-color: #000;
}

html.dark .header-container {
    background-color: var(--bg-card);
}

html.dark .nav-bar {
    background-color: var(--bg-card);
    border-top-color: var(--border-color);
}

html.dark .nav-list li a:hover {
    background-color: #374151;
}

html.dark .search-box input {
    background-color: #374151;
    border-color: var(--border-color);
    color: var(--text-main);
}