.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}
.phone-frame {
    width: 280px;
    height: 560px;
    border-radius: 36px;
    border: 4px solid #1e3a5f;
    background: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(30, 58, 95, 0.25);
}
.phone-notch {
    width: 120px;
    height: 28px;
    background: #1e3a5f;
    border-radius: 0 0 16px 16px;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}
.phone-status-bar {
    height: 44px;
    background: #1e3a5f;
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    font-size: 12px;
    font-weight: 600;
}
.phone-content {
    height: calc(100% - 44px);
    overflow-y: auto;
    scrollbar-width: none;
}
.phone-content::-webkit-scrollbar {
    display: none;
}
.appointment-block {
    border-left: 4px solid;
    padding: 8px 12px;
    border-radius: 0 8px 8px 0;
    margin-bottom: 6px;
    font-size: 12px;
}
.mockup-tab.active {
    background: #1e3a5f;
    color: white;
}
.steps-line {
    position: absolute;
    top: 32px;
    left: 50%;
    transform: translateX(-50%);
    width: 70%;
    height: 2px;
    background: linear-gradient(90deg, #f59e0b, #1e3a5f, #f59e0b);
}
@media (max-width: 768px) {
    .phone-frame {
        width: 240px;
        height: 480px;
    }
    .steps-line {
        display: none;
    }
}
.bar-chart-bar {
    transition: height 0.8s ease-out;
}
.zalo-bubble {
    position: relative;
    background: #e3f2fd;
    border-radius: 16px 16px 16px 4px;
    padding: 12px 16px;
    font-size: 13px;
    line-height: 1.5;
    max-width: 85%;
}
.zalo-bubble-reply {
    position: relative;
    background: #1e3a5f;
    color: white;
    border-radius: 16px 16px 4px 16px;
    padding: 12px 16px;
    font-size: 13px;
    max-width: 60%;
    margin-left: auto;
}
select {
    padding-right: 2.5rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}
input:focus, select:focus {
    outline: none;
    border-color: #1e3a5f;
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.15);
}
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #f59e0b;
    transition: width 0.3s;
}
.nav-link:hover::after {
    width: 100%;
}