body {
    margin: 0; font-family: 'Poppins', sans-serif; background: #111; color: #fff;
}
.navbar {
    display: flex; justify-content: space-between; align-items: center;
    background: #222; padding: 10px 20px;
}
.nav-links { display: flex; gap: 20px; list-style: none; margin: 0; }
.nav-links li a { color: #fff; text-decoration: none; font-weight: 500; }
.hero {
    display: flex; justify-content: center; align-items: center; text-align: center;
    height: 70vh; background: linear-gradient(135deg, #000, #333), url('https://www.transparenttextures.com/patterns/gplay.png'); background-size: cover;
    position: relative;
}
.hero::after {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: repeating-linear-gradient(45deg, rgba(255,215,0,0.05) 0px, rgba(255,215,0,0.05) 2px, transparent 2px, transparent 20px);
    pointer-events: none;
}
.hero-title {
    font-size: 48px; color: #ffd700; animation: fadeIn 2s ease-in-out;
    z-index: 2;
}
.section-title {
    text-align: center; font-size: 32px; margin: 30px 0; color: #ffd700;
    opacity: 0; transform: translateY(30px); transition: opacity 1s ease, transform 1s ease;
}
.gallery {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 15px; padding: 20px;
}
.gallery img {
    width: 100%; border-radius: 10px; transition: transform 0.3s, box-shadow 0.3s;
    opacity: 0; transform: translateY(20px);
}
.gallery img.visible {
    opacity: 1; transform: translateY(0); transition: 0.8s ease;
}
.gallery img:hover {
    transform: scale(1.05); box-shadow: 0 8px 20px rgba(255,215,0,0.4);
}
.pricing-table {
    width: 90%; margin: 30px auto; border-collapse: collapse; overflow: hidden; border-radius: 12px;
    background: #222; opacity: 0; transform: translateY(30px); transition: opacity 1s ease, transform 1s ease;
}
.pricing-table.visible {
    opacity: 1; transform: translateY(0);
}
.pricing-table thead { background: linear-gradient(135deg, #ffd700, #b8860b); color: #111; }
.pricing-table th, .pricing-table td { padding: 15px; text-align: center; border-bottom: 1px solid #444; }
.whatsapp {
    position: fixed; bottom: 20px; right: 20px; background: #25d366; color: #fff; padding: 10px 15px;
    border-radius: 50px; text-decoration: none; font-weight: bold;
}
.scroll-top {
    position: fixed; bottom: 80px; right: 20px; background: #ffd700; color: #111; border: none;
    padding: 10px 15px; border-radius: 50%; font-size: 18px; display: none;
}
.lightbox {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8);
    display: flex; justify-content: center; align-items: center; visibility: hidden; opacity: 0; transition: 0.3s;
}
.lightbox.active { visibility: visible; opacity: 1; }
.lightbox img { max-width: 90%; max-height: 90%; border-radius: 10px; }
.lightbox .close { position: absolute; top: 20px; right: 40px; font-size: 48px; color: #fff; cursor: pointer; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px);} to { opacity: 1; transform: translateY(0);} }

.about-section {
    padding: 40px 20px;
    text-align: center;
    background: #1a1a1a url('https://www.transparenttextures.com/patterns/gplay.png');
    background-size: cover;
    border-top: 2px solid #ffd700;
    border-bottom: 2px solid #ffd700;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}
.about-section.visible {
    opacity: 1;
    transform: translateY(0);
}
.about-text {
    max-width: 800px;
    margin: 0 auto;
    font-size: 18px;
    line-height: 1.8;
    color: #ddd;
}

/* Calculator */
.calculator-section {
    padding: 40px 20px;
    text-align: center;
    background: #1a1a1a url('https://www.transparenttextures.com/patterns/gplay.png');
    border-top: 2px solid #ffd700;
    border-bottom: 2px solid #ffd700;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}
.calculator-section.visible {
    opacity: 1;
    transform: translateY(0);
}
.calculator {
    max-width: 400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.calculator input, .calculator select {
    padding: 10px;
    font-size: 16px;
    border-radius: 5px;
    border: none;
}
.calculator button {
    background: #ffd700;
    color: #111;
    font-size: 18px;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}
.calculator #result {
    margin-top: 10px;
    font-size: 20px;
    color: #ffd700;
    font-weight: bold;
}
/* Light theme */
body.light-mode {
    background: #fff;
    color: #111;
}
body.light-mode .navbar {
    background: #f8f8f8;
}
body.light-mode .nav-links li a {
    color: #111;
}
body.light-mode .hero {
    background: linear-gradient(135deg, #fff, #ddd), url('https://www.transparenttextures.com/patterns/gplay.png');
}
body.light-mode .hero-title {
    color: #b8860b;
}
body.light-mode .section-title {
    color: #b8860b;
}
body.light-mode .pricing-table {
    background: #f9f9f9;
}
body.light-mode .gallery img:hover {
    box-shadow: 0 8px 20px rgba(184,134,11,0.4);
}

.contact-section {
    padding: 40px 20px;
    text-align: center;
    background: #1a1a1a url('https://www.transparenttextures.com/patterns/gplay.png');
    border-top: 2px solid #ffd700;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}
.contact-section.visible {
    opacity: 1;
    transform: translateY(0);
}
.contact-form {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.contact-form input, .contact-form textarea {
    padding: 12px;
    font-size: 16px;
    border-radius: 5px;
    border: none;
}
.contact-form button {
    background: #ffd700;
    color: #111;
    font-size: 18px;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}
body.light-mode .contact-section {
    background: #f8f8f8;
}

.download-pdf {
    text-align: center;
    margin: 20px 0;
}
.download-btn {
    display: inline-block;
    background: #ffd700;
    color: #111;
    font-size: 18px;
    font-weight: bold;
    padding: 12px 20px;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.3s ease, transform 0.2s ease;
}
.download-btn:hover {
    background: #e6c200;
    transform: scale(1.05);
}

.download-fixed {
    position: fixed;
    bottom: 150px;
    right: 20px;
    background: #ffd700;
    color: #111;
    font-size: 28px;
    text-decoration: none;
    width: 55px;
    height: 55px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    transition: transform 0.2s ease, background 0.3s ease;
    z-index: 1000;
}
.download-fixed:hover {
    transform: scale(1.1);
    background: #e6c200;
}