/* ========== CSS RESET & BASE ========== */
:root {
    --primary: #0d6efd;
    --primary-dark: #0a58ca;
    --secondary: #0a2540;
    --accent: #00d4ff;
    --light: #f8f9fa;
    --dark: #0a2540;
    --gray: #6c757d;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0,0,0,0.1);
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', sans-serif;
    color: #333;
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

.section-title p {
    color: var(--gray);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ========== PRELOADER ========== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #e9ecef;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========== HEADER / NAVBAR ========== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: background 0.4s ease, padding 0.4s ease, box-shadow 0.4s ease;
}

header.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    padding: 12px 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--secondary);
    letter-spacing: -1px;
}

.logo span {
    color: var(--primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    font-weight: 500;
    color: var(--dark);
    transition: color 0.3s;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--primary);
}

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--dark);
}

/* ========== HERO SECTION ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0a2540 0%, #0d6efd 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
    animation: float 8s infinite alternate;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: rgba(0,212,255,0.1);
    border-radius: 50%;
    animation: float 10s infinite alternate-reverse;
}

@keyframes float {
    from { transform: translate(0,0); }
    to { transform: translate(30px, -30px); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-text h1 span {
    color: var(--accent);
    background: linear-gradient(90deg, #00d4ff, #0d6efd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 30px;
    max-width: 500px;
}

.btn-group {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    border: 2px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--accent);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.btn-outline {
    border-color: rgba(255,255,255,0.5);
    color: var(--white);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 100%;
    animation: float 6s infinite alternate;
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.3);
}

/* ========== ABOUT SECTION ========== */
.about {
    background: var(--light);
}

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

.about-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    position: relative;
}

.about-image::after {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100%;
    height: 100%;
    border: 5px solid var(--primary);
    border-radius: 20px;
    z-index: -1;
}

.about-image img {
    transition: transform 0.5s;
}

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

.about-text h3 {
    font-size: 2rem;
    color: var(--secondary);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
    color: #555;
}

.about-stats {
    display: flex;
    gap: 30px;
    margin-top: 30px;
}

.stat {
    text-align: center;
}

.stat h4 {
    font-size: 2.5rem;
    color: var(--primary);
    font-weight: 800;
}

.stat p {
    font-size: 0.9rem;
    color: var(--gray);
}

/* ========== SERVICES SECTION ========== */
.services {
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    border-radius: 15px;
    padding: 40px 30px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
    border-bottom: 4px solid transparent;
}

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

.service-icon {
    width: 70px;
    height: 70px;
    background: rgba(13,110,253,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--primary);
    transition: all 0.3s;
}

.service-card:hover .service-icon {
    background: var(--primary);
    color: var(--white);
    transform: rotateY(360deg);
}

.service-card h3 {
    font-size: 1.3rem;
    color: var(--secondary);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* ========== PORTFOLIO SECTION ========== */
.portfolio {
    background: var(--light);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.portfolio-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    aspect-ratio: 4/3;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10,37,64,0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s;
    color: var(--white);
    padding: 20px;
    text-align: center;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-overlay h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.portfolio-overlay p {
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.portfolio-overlay a {
    color: var(--accent);
    font-weight: 600;
    border-bottom: 2px solid var(--accent);
}

/* ========== PRICING SECTION ========== */
.pricing {
    background: var(--white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    align-items: stretch;
}

.pricing-card {
    background: var(--white);
    border-radius: 15px;
    padding: 40px 30px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    border: 2px solid transparent;
}

.pricing-card.featured {
    border-color: var(--primary);
    transform: scale(1.05);
    z-index: 1;
    box-shadow: 0 20px 40px rgba(13,110,253,0.3);
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.2);
}

.pricing-card .badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

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

.price {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 20px;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--gray);
}

.pricing-card ul {
    list-style: none;
    margin: 20px 0;
    text-align: left;
}

.pricing-card ul li {
    padding: 10px 0;
    color: #555;
    border-bottom: 1px solid #f0f0f0;
}

.pricing-card ul li i {
    color: var(--primary);
    margin-right: 10px;
}

.pricing-card .btn {
    width: 100%;
    margin-top: 10px;
}

/* ========== TESTIMONIALS SECTION ========== */
.testimonials {
    background: var(--light);
}

.testimonial-slider {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 20px 0;
    scrollbar-width: none;
}

.testimonial-slider::-webkit-scrollbar {
    display: none;
}

.testimonial-card {
    min-width: 350px;
    scroll-snap-align: start;
    background: var(--white);
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--shadow);
    position: relative;
}

.testimonial-card .quote-icon {
    font-size: 2rem;
    color: rgba(13,110,253,0.2);
    position: absolute;
    top: 20px;
    right: 30px;
}

.testimonial-card p {
    font-style: italic;
    color: #555;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author h4 {
    font-size: 1rem;
    color: var(--secondary);
    margin-bottom: 0;
}

.testimonial-author span {
    font-size: 0.8rem;
    color: var(--gray);
}

/* ========== CONTACT SECTION ========== */
.contact {
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h3 {
    font-size: 1.8rem;
    color: var(--secondary);
    margin-bottom: 20px;
}

.contact-info p {
    margin-bottom: 30px;
    color: #555;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: rgba(13,110,253,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.2rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13,110,253,0.1);
}

.contact-form textarea {
    height: 150px;
    resize: vertical;
}

/* ========== FOOTER ========== */
footer {
    background: var(--secondary);
    color: rgba(255,255,255,0.8);
    padding: 40px 0;
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: background 0.3s, transform 0.3s;
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-5px);
}

/* ========== SCROLL ANIMATIONS ========== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 992px) {
    .hero-content,
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2.8rem;
    }

    .hero-image {
        order: -1;
    }

    .about-stats {
        justify-content: center;
    }

    .contact-info {
        text-align: left;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 30px;
        transition: left 0.3s;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: block;
    }
}

@media (max-width: 576px) {
    section {
        padding: 70px 0;
    }

    .hero-text h1 {
        font-size: 2.2rem;
    }

    .btn-group {
        justify-content: center;
    }

    .testimonial-card {
        min-width: 280px;
    }

    .pricing-card.featured {
        transform: none;
    }
}