/* --- VARIABLES & GLOBAL STYLES --- */
:root {
    --primary-color: #00B4D8;
    --primary-color-dark: #0096C7;
    --secondary-color: #03045E;
    --bg-dark: #121212;
    --bg-surface: #1E1E1E;
    --text-light: #F1F1F1;
    --text-medium: #A9A9A9;
    --border-color: #333333;
    --font-family: 'Poppins', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-dark);
    color: var(--text-medium);
    line-height: 1.7;
    overflow-x: hidden;
}

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

h1,
h2,
h3,
h4 {
    color: var(--text-light);
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
}

h3 {
    font-size: 1.5rem;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-color-dark);
}

section {
    padding: 100px 0;
    position: relative;
}

main>section:nth-child(odd) {
    background-color: var(--bg-surface);
}

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

.section-subtitle {
    display: block;
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--primary-color-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 180, 216, 0.2);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--bg-dark);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

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

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.preloader .loader-logo img {
    width: 80px;
    animation: pulse 1.5s infinite ease-in-out;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* --- HEADER & NAVIGATION --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: background-color 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
}

.header.scrolled {
    background-color: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

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

.logo img {
    width: 130px;
    filter: brightness(0) invert(1);
    transition: height 0.3s ease;
}


.nav-list {
    list-style: none;
    display: flex;
    gap: 35px;
}

.nav-link {
    color: var(--text-light);
    font-weight: 500;
    position: relative;
}

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

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* --- MOBILE MENU --- */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-light);
    margin: 5px 0;
    transition: all 0.3s ease;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 75px;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    padding: 20px;
    z-index: 999;
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-list {
    list-style: none;
    text-align: center;
}

.mobile-nav-link {
    display: block;
    padding: 15px;
    font-size: 1.2rem;
    color: var(--text-light);
}

/* --- HERO SECTION --- */
.hero-section {
    height: 100vh;
    display: flex;
    align-items: center;
    text-align: center;
    background: linear-gradient(rgba(18, 18, 18, 0.8), var(--bg-dark)), url('https://images.unsplash.com/photo-1521737604893-d14cc237f11d?q=80&w=2684&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    color: var(--text-light);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 650px;
    margin: 0 auto 40px auto;
    color: var(--text-medium);
}

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

.service-card {
    background-color: var(--bg-dark);
    padding: 40px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

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

/* --- ABOUT SECTION --- */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
}

.about-text .section-header {
    text-align: left;
}

.about-features {
    margin-top: 30px;
    margin-bottom: 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
}

.feature-item i {
    color: var(--primary-color);
}

.about-image img {
    width: 100%;
    border-radius: 10px;
}

/* --- PROCESS SECTION --- */
.process-timeline {
    display: flex;
    justify-content: space-between;
    position: relative;
}

.timeline-item {
    width: 23%;
    text-align: center;
    z-index: 1;
}

.timeline-icon {
    width: 60px;
    height: 60px;
    background-color: var(--bg-surface);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.timeline-item h3 {
    margin-bottom: 10px;
}

.timeline-connector {
    flex-grow: 1;
    height: 2px;
    background-color: var(--border-color);
    align-self: center;
    margin-top: -65px;
}

/* --- TESTIMONIALS SECTION --- */
.testimonial-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.testimonial-card {
    background-color: var(--bg-dark);
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.testimonial-text {
    font-style: italic;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 25px;
}

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

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

.testimonial-author h4 {
    margin: 0;
    color: var(--text-light);
}

.testimonial-author span {
    color: var(--text-medium);
    font-size: 0.9rem;
}

/* --- CONTACT SECTION --- */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
    background-color: var(--bg-dark);
    padding: 60px;
    border-radius: 15px;
}

.contact-info .section-header {
    text-align: left;
    margin-bottom: 0;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-group {
    flex: 1;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-light);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.contact-form textarea {
    resize: vertical;
}

/* --- FOOTER --- */
.footer {
    background-color: var(--bg-dark);
    padding: 80px 0 30px 0;
    border-top: 1px solid var(--border-color);
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-col h3 {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-medium);
}

.footer-col ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-logo img {
    width: 130px;
    filter: brightness(0) invert(1);
    transition: height 0.3s ease;
    margin-bottom: 20px;
}

.about-col p {
    margin-bottom: 25px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-surface);
    color: var(--text-medium);
    border-radius: 50%;
    font-size: 1rem;
}

.footer-social a:hover {
    background-color: var(--primary-color);
    color: var(--bg-dark);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    color: var(--text-medium);
}

.footer-contact li i {
    color: var(--primary-color);
    margin-top: 5px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-medium);
    font-size: 0.9rem;
}

.footer-legal-links a {
    margin-left: 20px;
    color: var(--text-medium);
}

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 992px) {

    .main-nav,
    .header-actions .btn {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .about-content,
    .testimonial-grid {
        grid-template-columns: 1fr;
    }

    .process-timeline {
        flex-direction: column;
        gap: 30px;
        align-items: center;
    }

    .timeline-item {
        width: 80%;
    }

    .timeline-connector {
        display: none;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .footer-top {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-col {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footer-contact li {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
    }
}

@media (max-width: 576px) {
    .form-row {
        flex-direction: column;
    }

    .about-features {
        grid-template-columns: 1fr;
    }
}