/* 玻璃拟态卡片 */
.card-glass {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-glass:hover {
    transform: translateY(-5px);
    box-shadow: var(--neon-glow);
}

/* 科技感按钮 */
.btn-tech {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-tech::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.2), transparent);
    transition: 0.5s;
}

.btn-tech:hover {
    background: var(--primary-color);
    color: #fff;
    box-shadow: var(--neon-glow);
}

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

/* 霓虹输入框 */
.input-neon {
    width: 100%;
    padding: 12px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid #334155;
    border-radius: 8px;
    color: var(--text-color);
    font-family: inherit;
    transition: all 0.3s ease;
}

.input-neon:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.3);
}

/* 导航栏 */
.nav-tech {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: var(--glass-border);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    text-shadow: var(--neon-glow);
}

.nav-links a {
    margin-left: 2rem;
    color: var(--text-muted);
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--primary-color);
}