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

/* BODY */
body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0d1b2a, #1b263b);
}

/* HEADER */
header {
    position: sticky;
    top: 0;
    background: rgba(13, 27, 42, 0.9);
    backdrop-filter: blur(10px);
    color: white;
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
}

.logo {
    background: linear-gradient(45deg, #00b4d8, #90e0ef);
    padding: 10px;
    border-radius: 10px;
    color: #0d1b2a;
}

nav a {
    color: white;
    margin-left: 20px;
    text-decoration: none;
    position: relative;
}

nav a::after {
    content: '';
    width: 0%;
    height: 2px;
    background: #00b4d8;
    position: absolute;
    bottom: -5px;
    left: 0;
    transition: 0.3s;
}

nav a:hover::after {
    width: 100%;
}

/* SECTIONS */
section {
    background: rgba(255,255,255,0.95);
    margin: 30px;
    padding: 40px;
    border-radius: 15px;
}

/* SLIDER */
.slider {
    max-width: 700px;
    margin: 20px auto;
    overflow: hidden;
    border-radius: 15px;
}

.slides {
    display: flex;
    width: 300%;
    animation: slide 12s infinite;
}

.slides img {
    width: 100%;
    height: 350px;
    object-fit: cover;
}

@keyframes slide {
    0% { margin-left: 0; }
    25% { margin-left: 0; }
    30% { margin-left: -100%; }
    55% { margin-left: -100%; }
    60% { margin-left: -200%; }
    85% { margin-left: -200%; }
    100% { margin-left: 0; }
}

/* TEXT */
h2 {
    text-align: center;
    margin-bottom: 20px;
}

p {
    text-align: center;
    line-height: 1.6;
}

.small-img {
    display: block;
    margin: auto;
    width: 200px;
}

/* TESTIMONIAL */
.testimonial {
    background: #e0f7fa;
    padding: 10px;
    margin: 10px auto;
    max-width: 500px;
    border-left: 5px solid #00b4d8;
}

/* REF */
.ref {
    display: inline-block;
    margin: 15px;
    padding: 15px;
    background: #f1f1f1;
    border-radius: 10px;
    text-align: center;
}

.ref img {
    width: 100px;
    border-radius: 50%;
}

/* GALLERY */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px,1fr));
    gap: 10px;
}

.gallery img {
    width: 100%;
    height: 130px;
    object-fit: cover;
}

/* LINKS */
section a {
    display: inline-block;
    margin: 10px;
    padding: 10px;
    background: #0077b6;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

/* FORM */
form {
    display: flex;
    flex-direction: column;
    align-items: center;
}

form input, textarea {
    width: 300px;
    margin: 5px;
    padding: 10px;
}

/* BUTTON */
button {
    margin: 5px;
    padding: 10px;
}

button[type="submit"] {
    background: green;
    color: white;
}

button[type="reset"] {
    background: red;
    color: white;
}

/* BACK TO TOP */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #00b4d8;
    padding: 10px;
    border-radius: 50%;
    color: white;
}

/* FOOTER */
footer {
    background: #0d1b2a;
    color: white;
    text-align: center;
    padding: 20px;
}