:root{
    --primary:#58b9b0;
    --primary-dark:#3f9d95;
    --bg:#f7fbfa;
    --text:#324b4a;
    --white:#ffffff;
    --shadow:0 10px 30px rgba(0,0,0,.08);
}

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

html{
    scroll-behavior:smooth;
    scroll-padding-top:100px;
}

body{
    font-family:Arial, Helvetica, sans-serif;
    color:var(--text);
    background:var(--bg);
    line-height:1.7;
}

.container{
    width:min(1100px,90%);
    margin:auto;
}

/* Header */

header {
    background:#fff;
    position:sticky;
    top:0;
    z-index:1000;
    box-shadow:0 2px 12px rgba(0,0,0,.05);
}

nav {
    display:flex;
    justify-content:center;
    align-items:center;
    padding:18px 0;
}

nav ul {
    display:flex;
    gap:28px;
    list-style:none;
}

nav a {
    text-decoration:none;
    color:var(--text);
    font-weight:600;
}

nav a.active{
    color:var(--primary-dark);
    position:relative;
}

nav a.active::after{
    content:"";
    position:absolute;
    left:0;
    bottom:-6px;
    width:100%;
    height:3px;
    background:var(--primary);
    border-radius:10px;
}

/* Hero */

.hero{
    text-align:center;
    padding:60px 20px;
}

.hero img{
    max-width:600px;
    width:100%;
    margin-bottom:25px;
}

.hero h1{
    color:var(--primary-dark);
    font-size:2.5rem;
    margin-bottom:15px;
}

.hero p{
    max-width:700px;
    margin:auto;
}

/* Sections */

section{
    padding:80px 0;
    scroll-margin-top:100px;
}

.section-title{
    text-align:center;
    margin-bottom:50px;
}

.section-title h2{
    color:var(--primary-dark);
    font-size:2rem;
    margin-bottom:10px;
}

.section-title img{
    height:160px;
    width:auto;
}

/* Cards */

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:25px;
}

.card{
    background:white;
    border-radius:24px;
    overflow:hidden;
    box-shadow:var(--shadow);
}

.card img{
    width:100%;
    height:auto;
    display:block;
}

.card-content{
    padding:25px;
}

.card-content img{
    height:128px;
    width:auto;
}

.content-card h1{
    color:var(--primary-dark);
    margin-bottom:15px;
}

.card h3{
    color:var(--primary-dark);
    margin-bottom:15px;
}

.card h2,
.card h3{
    color:var(--primary-dark);
    margin-bottom:15px;
}

.content-card{
    background:white;
    padding:40px;
    border-radius:24px;
    margin-bottom:30px;
    box-shadow:var(--shadow);
}
.about{
    display:grid;
    grid-template-columns:350px 1fr;
    gap:50px;
    align-items:center;
}

.about img{
    width:100%;
    border-radius:24px;
    box-shadow:var(--shadow);
    align-self:start;
}

/* ul */

ul{
    max-width:700px;
    list-style:none;
}

li{
    padding:8px 0;
    border-bottom:1px solid #e8eeee;
}

/* Bullets */

.bullets{
    display:flex;
    flex-direction:column;
    gap:20px;
    max-width:700px;
    margin:auto;
}

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

.bullet img{
    max-width:120px;
    min-width:120px;
    height:120px;
    object-fit:contain;
    flex-shrink:0;
}

.bullet p{
    flex:1;
}

/* Contact */

.contact{
    text-align:center;
}

.contact-box{
    background:white;
    padding:50px;
    border-radius:24px;
    box-shadow:var(--shadow);
    max-width:800px;
    margin:auto;
}

.email{
    margin-top:25px;
    font-weight:bold;
    color:var(--primary-dark);
}

/* Buttons */

.btn{
    display:inline-block;
    margin-top:20px;
    padding:14px 28px;

    background:var(--primary);
    color:white;

    text-decoration:none;
    font-weight:600;

    border:none;
    border-radius:999px;

    box-shadow:0 4px 12px rgba(88,185,176,.25);

    transition:
        background-color .2s ease,
        transform .2s ease,
        box-shadow .2s ease;
}

.btn:hover{
    background:var(--primary-dark);
    transform:translateY(-2px);
    box-shadow:0 8px 18px rgba(63,157,149,.30);
}

.btn-small{
    display:inline-block;

    margin-top:15px;
    padding:10px 20px;

    background:white;
    color:var(--primary-dark);

    border:2px solid var(--primary);
    border-radius:999px;

    text-decoration:none;
    font-weight:600;

    transition:.2s;
}

.btn-small:hover{
    background:var(--primary);
    color:white;
}

/* Footer */

footer{
    text-align:center;
    background:white;
    padding:40px 20px;
}

footer a{
    color:var(--primary-dark);
    text-decoration:none;
}

/* Mobile */

@media(max-width:900px){

    nav ul{
        flex-wrap:wrap;
        gap:16px;
    }

    .about{
        display:flex;
        flex-direction:column;
        align-items:center;
    }

    .hero h1{
        font-size:2rem;
    }

    .section-title img{
        height:120px;
    }

    .content-card{
        padding:25px;
    }

}

/* Accordion styles */
.accordion{
    overflow:hidden;
    max-height:0;
    opacity:0;
    transition: max-height 400ms ease, opacity 300ms ease, padding 300ms ease;
    padding-top:0;
}
.accordion.visible{
    opacity:1;
    max-height:2000px; /* large enough for content */
    padding-top:30px;
}
.accordion.hidden{
    opacity:0;
    max-height:0;
    padding-top:0;
}

/* Make cards clearly interactive when they control accordions */
.card[data-target]{
    cursor:pointer;
}

.card[data-target]:hover{
    transform:translateY(-4px);
    transition:transform .2s ease;
}