/* ===================================
   ULTRA KOMPUTER - MAIN STYLESHEET
   Dark Theme with Neon Yellow Accent
   =================================== */

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

:root {
    --primary-dark: #1a1a1a;
    --secondary-dark: #2d2d2d;
    --accent-yellow: #FFFF00;
    --accent-yellow-light: #ffff33;
    --text-light: #ffffff;
    --text-gray: #b0b0b0;
    --border-color: #404040;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--primary-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== HEADER & NAVIGATION ===== */
header {
    background-color: var(--secondary-dark);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 2px solid var(--accent-yellow);
    box-shadow: 0 2px 10px rgba(255, 255, 0, 0.1);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-yellow);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo::before {
    content: "⚙";
    font-size: 2rem;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-yellow);
    transition: width 0.3s ease;
}

nav a:hover {
    color: var(--accent-yellow);
}

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

nav a.active {
    color: var(--accent-yellow);
}

nav a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--accent-yellow);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ===== HERO SECTION ===== */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
    background-image: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 50px,
            rgba(255, 255, 0, 0.03) 50px,
            rgba(255, 255, 0, 0.03) 100px
        ),
        linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
    padding: 100px 20px;
    text-align: center;
    min-height: 600px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 0, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 0, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(30px);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 .highlight {
    color: var(--accent-yellow);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 30px;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background-color: var(--accent-yellow);
    color: var(--primary-dark);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 2px solid var(--accent-yellow);
    cursor: pointer;
    margin: 10px;
}

.cta-button:hover {
    background-color: transparent;
    color: var(--accent-yellow);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 255, 0, 0.2);
}

.cta-button.secondary {
    background-color: transparent;
    color: var(--accent-yellow);
    border: 2px solid var(--accent-yellow);
}

.cta-button.secondary:hover {
    background-color: var(--accent-yellow);
    color: var(--primary-dark);
}

/* ===== SECTION STYLES ===== */
section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 50px;
    text-align: center;
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--accent-yellow), transparent);
}

.section-title .highlight {
    color: var(--accent-yellow);
}

/* ===== SERVICES SECTION ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: linear-gradient(135deg, var(--secondary-dark) 0%, rgba(45, 45, 45, 0.8) 100%);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 0, 0.1), transparent);
    transition: left 0.5s ease;
}

.service-card:hover::before {
    left: 100%;
}

.service-card:hover {
    border-color: var(--accent-yellow);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(255, 255, 0, 0.15);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--accent-yellow);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-light);
}

.service-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ===== ABOUT SECTION ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--text-light);
}

.about-text p {
    color: var(--text-gray);
    margin-bottom: 15px;
    line-height: 1.8;
}

.about-image {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.about-image:hover img {
    transform: scale(1.05);
}

.about-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 0, 0.1) 0%, transparent 100%);
    border: 2px solid var(--accent-yellow);
    border-radius: 10px;
}

/* ===== FEATURES LIST ===== */
.features-list {
    list-style: none;
    margin-top: 30px;
}

.features-list li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-gray);
}

.features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-yellow);
    font-weight: bold;
    font-size: 1.2rem;
}

/* ===== CONTACT FORM ===== */
.contact-form {
    max-width: 600px;
    margin: 50px auto;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-light);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-light);
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-yellow);
    box-shadow: 0 0 10px rgba(255, 255, 0, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit {
    width: 100%;
    padding: 15px;
    background-color: var(--accent-yellow);
    color: var(--primary-dark);
    border: none;
    border-radius: 5px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-submit:hover {
    background-color: var(--accent-yellow-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 255, 0, 0.2);
}

/* ===== FOOTER ===== */
footer {
    background-color: var(--secondary-dark);
    padding: 40px 20px;
    border-top: 2px solid var(--accent-yellow);
    text-align: center;
    color: var(--text-gray);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-info {
    margin-bottom: 20px;
}

.footer-info p {
    margin: 8px 0;
}

.footer-info a {
    color: var(--accent-yellow);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-info a:hover {
    color: var(--accent-yellow-light);
}

.footer-divider {
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-yellow), transparent);
    margin: 20px auto;
}

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

/* ===== FLOATING WHATSAPP BUTTON ===== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 1.8rem;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

.whatsapp-float::before {
    content: '💬';
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    nav ul {
        gap: 1rem;
    }

    nav a {
        font-size: 0.9rem;
    }

    .menu-toggle {
        display: flex;
    }

    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--secondary-dark);
        flex-direction: column;
        padding: 20px;
        gap: 1rem;
    }

    nav.active {
        display: flex;
    }

    nav ul {
        flex-direction: column;
        gap: 1rem;
    }

    .hero {
        padding: 60px 20px;
        min-height: 400px;
    }

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

    .hero p {
        font-size: 1rem;
    }

    section {
        padding: 50px 20px;
    }

    .section-title {
        font-size: 2rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0 15px;
    }

    .logo {
        font-size: 1.3rem;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 0.9rem;
    }

    .cta-button {
        padding: 12px 25px;
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .service-card {
        padding: 20px;
    }

    .about-text h2 {
        font-size: 1.5rem;
    }

    .whatsapp-float {
        bottom: 15px;
        right: 15px;
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
}