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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f5f7fa;
    color: #333;
    text-align: center;
    padding-top: 60px;
}

/* STICKY NAVIGATION */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: #2c3e50;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    color: white;
    font-weight: bold;
    font-size: 18px;
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #3498db;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: white;
    transition: 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #2c3e50;
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        display: none;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .hamburger {
        display: flex;
    }
}

/* HEADER */
header {
    background: #3498db;
    color: white;
    padding: 30px 15px 25px;
}

.logo-img {
    max-width: 90px;
    margin-bottom: 10px;
    transition: transform 0.3s;
}

.logo-img:hover {
    transform: scale(1.1);
}

/* Banner in header */
.header-banner {
    margin-top: 15px;
}

.header-banner img {
    width: 100%;
    max-width: 900px;
    border-radius: 10px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.25);
}

/* SECTIONS */
section {
    padding: 40px 20px;
    background: white;
    margin: 20px;
    border-radius: 10px;
    animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h2 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.highlight {
    font-size: 18px;
    font-weight: bold;
    color: #2ecc71;
}

/* BUTTONS */
.btn {
    display: inline-block;
    margin-top: 15px;
    padding: 12px 25px;
    background: #2ecc71;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn:hover {
    background: #27ae60;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.4);
}

/* CARDS */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
    gap: 20px;
    margin-top: 30px;
}

.card {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    margin-bottom: 15px;
    border-radius: 8px;
}

.card h3 {
    color: #3498db;
    margin-bottom: 10px;
}

/* COURSE CARDS */
.course-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.course-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
}

.course-card:nth-child(2) {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.course-card:nth-child(3) {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.course-card:nth-child(4) {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.course-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.course-card h3 {
    margin-bottom: 10px;
    font-size: 24px;
}

.course-card p {
    margin: 0;
    opacity: 0.95;
    font-size: 16px;
}

/* INQUIRY FORM */
.inquiry-form {
    max-width: 500px;
    margin: 30px auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
    padding: 12px 15px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 15px;
    font-family: Arial, sans-serif;
    transition: border-color 0.3s;
}

.inquiry-form input:focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus {
    outline: none;
    border-color: #3498db;
}

.inquiry-form button {
    width: 100%;
}

.note {
    margin-top: 20px;
    font-weight: bold;
    color: #27ae60;
}

/* TABLE */
ul {
    list-style: none;
    padding: 0;
}

table {
    width: 100%;
    max-width: 600px;
    margin: 20px auto;
    border-collapse: collapse;
}

th, td {
    border: 1px solid #ccc;
    padding: 12px;
}

th {
    background: #3498db;
    color: white;
}

tr {
    transition: background 0.3s;
}

tr:hover {
    background: #f0f0f0;
}

/* MAP */
.map iframe {
    width: 100%;
    max-width: 800px;
    height: 300px;
    border: 0;
    margin-top: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* GALLERY */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.gallery-item {
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    padding: 15px;
}

.gallery-item img {
    width: 100%;
    border-radius: 8px;
    object-fit: cover;
    max-height: 260px;
}

.gallery-item p {
    margin-top: 10px;
    font-size: 14px;
    color: #555;
}

/* LIGHTBOX */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.85);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 20px;
}

.lightbox-content {
    max-width: 90%;
    max-height: 80vh;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #fff;
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
}

#lightboxCaption {
    color: #fff;
    margin-top: 15px;
    text-align: center;
    max-width: 90%;
    font-size: 14px;
}

/* FLOATING WHATSAPP BUTTON */
.whatsapp-float {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #25D366;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    z-index: 999;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.6);
    }
    100% {
        box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    }
}

/* FOOTER */
footer {
    background: #2c3e50;
    color: white;
    padding: 20px;
    margin-top: 40px;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    body {
        padding-top: 60px;
    }
    
    section {
        margin: 10px;
        padding: 30px 15px;
    }
    
    .cards,
    .course-cards,
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 15px;
        right: 15px;
    }
}