@import url('https://fonts.googleapis.com/css?family=Open+Sans:400,700,800');
@import url('https://fonts.googleapis.com/css?family=Lobster');

html {
    font-size: 62.5%;
}

body {
    font-family: 'Open Sans', sans-serif;
    font-size: 2rem;
    font-weight: 400;
}

h1 {
    margin-bottom: 0.5em;
    font-size: 3.6rem;
}

p {
    margin-bottom: 0.5em;
    font-size: 1.6rem;
    line-height: 1.6;
}

.button {
    display: inline-block;
    margin-top: 20px;
    padding: 8px 25px;
    border-radius: 4px;
}

.button-primary {
    position: relative;
    background-color: #c0ca33;
    color: #fff;
    font-size: 1.8rem;
    font-weight: 700;
    transition: color 0.3s ease-in;
    z-index: 1;
}

.button-primary:hover {
    color: #c0ca33;
    text-decoration: none;
}

.button-primary::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    top: 0;
    background-color: #fff;
    border-radius: 4px;
    opacity: 0;
    -webkit-transform: scaleX(0.8);
    -ms-transform: scaleX(0.8);
    transform: scaleX(0.8);
    transition: all 0.3s ease-in;
    z-index: -1;
}

.button-primary:hover::after {
    opacity: 1;
    -webkit-transform: scaleX(1);
    -ms-transform: scaleX(1);
    transform: scaleX(1);
}

.overlay::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    top: 0;
    /* background-color: rgba(0, 0, 0, .3); */
}

.header-area {
    position: relative;
    height: 5em;
    background: #053b4e;
    background-attachment: fixed;
    background-position: center center;
    background-repeat: no-repear;
    background-size: cover;
}

.banner {
    display: flex;
    align-items: center;
    position: relative;
    height: 100%;
    color: #fff;
    text-align: center;
    z-index: 1;
}

.banner h1 {
    font-weight: 800;
}

.banner p {
    font-weight: 700;
}

.navbar {
    position: absolute;
    left: 0;
    top: 0;
    padding: 0;
    width: 100%;
    transition: background 0.6s ease-in;
    z-index: 5;
}

.navbar .navbar-brand {
    /* font-family: 'Lobster', cursive; */
    font-size: 5rem;
}

.navbar .navbar-toggler {
    position: relative;
    height: 50px;
    width: 50px;
    border: none;
    cursor: pointer;
    outline: none;
}

.navbar .navbar-toggler .menu-icon-bar {
    position: absolute;
    left: 15px;
    right: 15px;
    height: 2px;
    background-color: #fff;
    opacity: 0;
    -webkit-transform: translateY(-1px);
    -ms-transform: translateY(-1px);
    transform: translateY(-1px);
    transition: all 0.3s ease-in;
}

.navbar .navbar-toggler .menu-icon-bar:first-child {
    opacity: 1;
    -webkit-transform: translateY(-1px) rotate(45deg);
    -ms-sform: translateY(-1px) rotate(45deg);
    transform: translateY(-1px) rotate(45deg);
}

.navbar .navbar-toggler .menu-icon-bar:last-child {
    opacity: 1;
    -webkit-transform: translateY(-1px) rotate(135deg);
    -ms-sform: translateY(-1px) rotate(135deg);
    transform: translateY(-1px) rotate(135deg);
}

.navbar .navbar-toggler.collapsed .menu-icon-bar {
    opacity: 1;
}

.navbar .navbar-toggler.collapsed .menu-icon-bar:first-child {
    -webkit-transform: translateY(-7px) rotate(0);
    -ms-sform: translateY(-7px) rotate(0);
    transform: translateY(-7px) rotate(0);
}

.navbar .navbar-toggler.collapsed .menu-icon-bar:last-child {
    -webkit-transform: translateY(5px) rotate(0);
    -ms-sform: translateY(5px) rotate(0);
    transform: translateY(5px) rotate(0);
}

.navbar-dark .navbar-nav .nav-link {
    position: relative;
    color: #fff;
    font-size: 1.6rem;
}

.navbar-dark .navbar-nav .nav-link:focus,
.navbar-dark .navbar-nav .nav-link:hover {
    color: #fff;
}

.navbar .dropdown-menu {
    padding: 0;
    background-color: rgba(0, 0, 0, .9);
}

.navbar .dropdown-menu .dropdown-item {
    position: relative;
    padding: 10px 20px;
    color: #fff;
    font-size: 1.4rem;
    border-bottom: 1px solid rgba(255, 255, 255, .1);
    transition: color 0.2s ease-in;
}

.navbar .dropdown-menu .dropdown-item:last-child {
    border-bottom: none;
}

.navbar .dropdown-menu .dropdown-item:hover {
    background: transparent;
    color: #c0ca33;
}

.navbar .dropdown-menu .dropdown-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    top: 0;
    width: 5px;
    background-color: #c0ca33;
    opacity: 0;
    transition: opacity 0.2s ease-in;
}

.navbar .dropdown-menu .dropdown-item:hover::before {
    opacity: 1;
}

.navbar.fixed-top {
    position: fixed;
    -webkit-animation: navbar-animation 0.6s;
    animation: navbar-animation 0.6s;
    background-color: rgba(0, 0, 0, .9);
}

/* .navbar.fixed-top.navbar-dark .navbar-nav .nav-link.active {
  color: #c0ca33;
} */
#main-nav.navbar-collapse .navbar-nav .nav-link.active {
    color: black !important;
    background-color: rgb(255, 255, 223) !important;
}

.navbar.fixed-top.navbar-dark .navbar-nav .nav-link::after {
    background-color: #c0ca33;
}

.content {
    padding: 120px 0;
}

@media screen and (max-width: 768px) {
    .navbar-brand {
        margin-left: 20px;
    }

    .navbar-nav {
        padding: 0 20px;
        background-color: rgba(0, 0, 0, .9);
    }

    .navbar.fixed-top .navbar-nav {
        background: transparent;
    }
}

@media screen and (min-width: 767px) {
    .banner {
        padding: 0 150px;
    }

    .banner h1 {
        font-size: 5rem;
    }

    .banner p {
        font-size: 2rem;
    }

    .navbar-dark .navbar-nav .nav-link {
        padding: 23px 15px;
    }

    .navbar-dark .navbar-nav .nav-link::after {
        content: '';
        position: absolute;
        bottom: 15px;
        left: 30%;
        right: 30%;
        height: 1px;
        background-color: #fff;
        -webkit-transform: scaleX(0);
        -ms-transform: scaleX(0);
        transform: scaleX(0);
        transition: transform 0.1s ease-in;
    }

    .navbar-dark .navbar-nav .nav-link:hover::after {
        -webkit-transform: scaleX(1);
        -ms-transform: scaleX(1);
        transform: scaleX(1);
    }

    .dropdown-menu {
        min-width: 200px;
        -webkit-animation: dropdown-animation 0.3s;
        animation: dropdown-animation 0.3s;
        -webkit-transform-origin: top;
        -ms-transform-origin: top;
        transform-origin: top;
    }
}

@-webkit-keyframes navbar-animation {
    0% {
        opacity: 0;
        -webkit-transform: translateY(-100%);
        -ms-transform: translateY(-100%);
        transform: translateY(-100%);
    }

    100% {
        opacity: 1;
        -webkit-transform: translateY(0);
        -ms-transform: translateY(0);
        transform: translateY(0);
    }
}

@keyframes navbar-animation {
    0% {
        opacity: 0;
        -webkit-transform: translateY(-100%);
        -ms-transform: translateY(-100%);
        transform: translateY(-100%);
    }

    100% {
        opacity: 1;
        -webkit-transform: translateY(0);
        -ms-transform: translateY(0);
        transform: translateY(0);
    }
}

@-webkit-keyframes dropdown-animation {
    0% {
        -webkit-transform: scaleY(0);
        -ms-transform: scaleY(0);
        transform: scaleY(0);
    }

    75% {
        -webkit-transform: scaleY(1.1);
        -ms-transform: scaleY(1.1);
        transform: scaleY(1.1);
    }

    100% {
        -webkit-transform: scaleY(1);
        -ms-transform: scaleY(1);
        transform: scaleY(1);
    }
}

@keyframes dropdown-animation {
    0% {
        -webkit-transform: scaleY(0);
        -ms-transform: scaleY(0);
        transform: scaleY(0);
    }

    75% {
        -webkit-transform: scaleY(1.1);
        -ms-transform: scaleY(1.1);
        transform: scaleY(1.1);
    }

    100% {
        -webkit-transform: scaleY(1);
        -ms-transform: scaleY(1);
        transform: scaleY(1);
    }
}

/* 讓 navbar 內部上下置中對齊 */
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    /* 建議比 logo 略高，或根據你 logo 決定 */
    padding-top: 0;
    padding-bottom: 0;
}

/* 讓 nav-link 也能垂直置中 */
.navbar-nav .nav-link {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 15px;
    font-size: 1.6rem;
    line-height: 1;
}

.navbar-nav {
    display: flex;
    flex-wrap: nowrap;
}

.navbar-nav li {
    border: 1px solid #ddd;
    margin: 3px;
    border-radius: 5px;
    flex: 1;
    text-align: center;
    box-sizing: border-box;
}

.navbar-nav .nav-link {
    display: flex;
    justify-content: center; /* 左右置中 */
    align-items: center;     /* 上下置中 */

    min-height: 50px;
    white-space: nowrap;
    text-align: center;
}