:root {
    --primary-dark: #020611;
    --primary-light: #0c1830;
    --primary-gradient: linear-gradient(145deg, #020611 0%, #041b3b 55%, #001e4d 100%);
    --secondary: #8892b0;
    --text-main: #e6f1ff;
    --accent: #0b82ff;
    --accent-glow: rgba(11, 130, 255, 0.35);
    --white: #ffffff;
    --glass: rgba(255, 255, 255, 0.07);
    --transition: all 0.45s cubic-bezier(0.645, 0.045, 0.355, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--primary-gradient);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

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

ul {
    list-style: none;
}

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

.section-padding {
    padding: 100px 0;
}

/* Header */
#main-header {
    background: rgba(2, 6, 17, 0.8);
    padding: 16px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
}

.nav-main {
    display: flex;
    align-items: center;
    gap: 32px;
}

.logo {
    display: flex;
    align-items: center;
    margin-left: 12px;
}

.logo img {
    height: 64px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-main);
    position: relative;
    padding-bottom: 6px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 22px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.2em;
}

.burger {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    gap: 6px;
    flex-direction: column;
}

.burger div {
    width: 22px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

/* Hero Section - Split Screen & Parallax */
#hero {
    position: relative;
    min-height: 100vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    overflow: hidden;
    padding: 0 0 20px;
    background: radial-gradient(circle at top, rgba(11, 130, 255, 0.25), rgba(2, 6, 17, 0.95));
    gap: 32px;
}

.hero-background {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(0, 12, 36, 0.9) 0%, rgba(3, 30, 71, 0.8) 45%, rgba(0, 51, 102, 0.65) 100%);
    opacity: 0.85;
    animation: gradientShift 16s ease-in-out infinite alternate;
    z-index: 0;
}

.hero-particle {
    position: absolute;
    width: 240px;
    height: 240px;
    border-radius: 40%;
    filter: blur(40px);
    background: radial-gradient(circle, rgba(11, 130, 255, 0.35), transparent 70%);
    animation: float 18s ease-in-out infinite;
    z-index: 0;
}

.hero-particle-left {
    top: 10%;
    left: 5%;
}

.hero-particle-right {
    bottom: 5%;
    right: 8%;
    animation-delay: 6s;
}

@keyframes gradientShift {
    0% {
        transform: translate3d(0, 0, 0);
    }

    100% {
        transform: translate3d(-30px, 30px, 0);
    }
}

@keyframes float {
    0% {
        transform: translateY(0) scale(1);
    }

    50% {
        transform: translateY(-25px) scale(1.05);
    }

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

.hero-content {
    position: relative;
    z-index: 10;
    width: min(1100px, 90%);
    text-align: center;
    pointer-events: auto;
    margin: 0 auto;
    padding: 160px 0 40px;
}

.eyebrow {
    font-size: 0.85rem;
    letter-spacing: 0.65em;
    text-transform: uppercase;
    color: var(--secondary);
    display: inline-block;
    margin-bottom: 20px;
}

.hero-content h1 {
    font-size: clamp(2.8rem, 6vw, 4.2rem);
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.025em;
    background: linear-gradient(90deg, #ffffff 0%, #d8ecff 38%, #60b0ff 70%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    margin: 18px auto 32px;
    font-size: 1.05rem;
    max-width: 720px;
    color: rgba(230, 241, 255, 0.85);
}

.hero-ctas {
    display: flex;
    justify-content: center;
    gap: 18px;
    margin-bottom: 40px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 18px;
}

.stat {
    background: rgba(4, 12, 34, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 18px 10px;
    backdrop-filter: blur(12px);
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
}

.split-grid {
    position: relative;
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    min-height: 0;
    gap: 0;
    padding: 0;
    justify-content: center;
    align-items: stretch;
}

.split {
    position: relative;
    flex: 1 1 50%;
    min-height: 520px;
    height: auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
    overflow: hidden;
    isolation: isolate;
    padding: 0;
}

.split .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 16, 32, 0.4);
    transition: var(--transition);
    z-index: 1;
}

.split:hover .overlay {
    background: rgba(5, 16, 32, 0.2);
}

/* Left Side - Tech */
.split.left {
    background: radial-gradient(circle at center, #051a3f 0%, #020611 100%);
    border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.split.left::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image:
        linear-gradient(rgba(0, 123, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 123, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    transform: perspective(500px) rotateX(60deg);
    animation: gridMove 20s linear infinite;
    opacity: 0.5;
    z-index: 0;
}

@keyframes gridMove {
    0% {
        transform: perspective(500px) rotateX(60deg) translateY(0);
    }

    100% {
        transform: perspective(500px) rotateX(60deg) translateY(50px);
    }
}

/* Right Side - Auto/Marine */
.split.right {
    background: linear-gradient(120deg, #06152c 0%, #020611 35%, #000000 100%);
}

.split.right::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(45deg,
            transparent,
            transparent 10px,
            rgba(255, 255, 255, 0.05) 10px,
            rgba(255, 255, 255, 0.05) 11px);
    z-index: 0;
}

.split-content {
    position: relative;
    z-index: 2;
    max-width: 420px;
    padding: 36px;
    background: rgba(5, 10, 25, 0.65);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(18px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    margin: 0 auto;
}

.split-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--secondary);
    margin-bottom: 18px;
}

.split h2 {
    font-size: 2rem;
    margin-bottom: 12px;
}

.split p {
    color: rgba(230, 241, 255, 0.8);
    margin-bottom: 20px;
}

.split-list li {
    margin-bottom: 8px;
    color: var(--secondary);
    position: relative;
    padding-left: 18px;
}

.split-list li::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 0;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
}

.split-list {
    margin-bottom: 28px;
}

.split-btn {
    margin-top: 32px;
    width: fit-content;
}

.btn {
    padding: 14px 32px;
    border: 1px solid transparent;
    background: rgba(11, 130, 255, 0.1);
    color: var(--white);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    transition: var(--transition);
    cursor: pointer;
    border-radius: 999px;
    pointer-events: auto;
}

.btn.primary,
.btn-submit.primary {
    background: linear-gradient(120deg, #0b82ff, #5ab3ff);
    border-color: transparent;
    box-shadow: 0 15px 40px rgba(11, 130, 255, 0.25);
}

.btn.ghost {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline {
    background: transparent;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(11, 130, 255, 0.35);
}

/* About Section */
#about {
    position: relative;
    background-image: url('../assets/about_bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--white);
    overflow: hidden;
}

#about .about-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(145deg, rgba(3, 9, 24, 0.92), rgba(2, 6, 17, 0.94));
    z-index: 1;
}

#about .container {
    position: relative;
    z-index: 2;
    background: rgba(3, 9, 24, 0.7);
    backdrop-filter: blur(18px);
    padding: 60px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    max-width: 900px;
}

.section-heading {
    text-align: center;
    margin-bottom: 32px;
}

.section-heading h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 14px;
}

.section-heading .lead {
    color: rgba(230, 241, 255, 0.85);
}

.lead {
    font-size: 1.05rem;
    color: rgba(230, 241, 255, 0.8);
}

.about-highlights {
    margin-top: 32px;
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.highlight-card {
    background: rgba(4, 12, 34, 0.65);
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 26px;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 36px;
    margin-top: 48px;
}

.service-card {
    background-color: rgba(4, 12, 34, 0.6);
    border-radius: 22px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(11, 130, 255, 0.6);
    box-shadow: 0 30px 60px rgba(11, 130, 255, 0.25);
}

.service-img {
    height: 260px;
    overflow: hidden;
    position: relative;
}

.service-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.service-content {
    padding: 30px;
    flex-grow: 1;
    background: linear-gradient(to bottom, var(--primary-light), #0a192f);
    transition: var(--transition);
}

.service-card:hover .service-content {
    background: linear-gradient(to bottom, #162c50, #0a192f);
}

.service-card h3 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1.5rem;
    border-bottom: 2px solid var(--accent);
    padding-bottom: 10px;
    display: inline-block;
}

.service-meta {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.service-meta span {
    padding: 6px 16px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

/* Contact Form */
.contact-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 32px;
}

.contact-info,
.contact-form {
    background: rgba(4, 12, 34, 0.7);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 32px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
}

.contact-info h3 {
    margin-bottom: 12px;
}

.contact-meta li {
    display: flex;
    flex-direction: column;
    margin-bottom: 12px;
    font-size: 0.95rem;
    gap: 4px;
}

.contact-meta span {
    text-transform: uppercase;
    letter-spacing: 0.25em;
    font-size: 0.7rem;
    color: var(--secondary);
}

.contact-form input,
.contact-form textarea {
    background-color: rgba(12, 24, 55, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--white);
    border-radius: 14px;
    transition: var(--transition);
    width: 100%;
    margin-bottom: 18px;
    padding: 14px 16px;
}

.contact-form textarea {
    min-height: 140px;
    resize: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px rgba(11, 130, 255, 0.35);
    outline: none;
}

.btn-submit {
    padding: 15px;
    background-color: transparent;
    border: 1px solid var(--accent);
    color: var(--white);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    border-radius: 999px;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px 0;
    color: var(--secondary);
    font-size: 0.9rem;
    background-color: rgba(2, 6, 17, 0.8);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Scroll Animations */
.reveal,
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active,
[data-animate].active {
    opacity: 1;
    transform: translateY(0);
}

[data-delay="75"] {
    transition-delay: 75ms;
}

[data-delay="100"] {
    transition-delay: 100ms;
}

[data-delay="120"] {
    transition-delay: 120ms;
}

[data-delay="140"] {
    transition-delay: 140ms;
}

[data-delay="150"] {
    transition-delay: 150ms;
}

[data-delay="160"] {
    transition-delay: 160ms;
}

[data-delay="180"] {
    transition-delay: 180ms;
}

[data-delay="200"] {
    transition-delay: 200ms;
}

[data-delay="220"] {
    transition-delay: 220ms;
}

[data-delay="240"] {
    transition-delay: 240ms;
}

[data-delay="260"] {
    transition-delay: 260ms;
}

[data-delay="320"] {
    transition-delay: 320ms;
}

[data-delay="380"] {
    transition-delay: 380ms;
}

@keyframes fadeDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .nav-container {
        padding: 0 16px;
    }

    .nav-main {
        gap: 20px;
    }

    .hero-content {
        padding-top: 140px;
        width: min(95%, 880px);
    }

    .split-grid {
        flex-direction: column;
        padding: 32px 0;
    }

    .split {
        flex: 1 1 auto;
        min-height: 480px;
    }

    .split.left {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
}

@media (max-width: 768px) {
    #main-header {
        padding: 12px 0;
    }

    .logo img {
        height: 48px;
    }

    .burger {
        display: flex;
    }

    .nav-main {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(2, 6, 17, 0.95);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding: 20px;
        flex-direction: column;
        gap: 16px;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-10px);
        transition: var(--transition);
    }

    .nav-main.open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .nav-links {
        flex-direction: column;
        gap: 14px;
    }

    .nav-links a {
        font-size: 0.9rem;
        letter-spacing: 0.12em;
    }

    #hero {
        padding-bottom: 30px;
    }

    .hero-content {
        padding: 120px 0 20px;
    }

    .hero-content h1 {
        font-size: 2.2rem;
        width: 100%;
    }

    .hero-ctas {
        flex-direction: column;
        align-items: stretch;
    }

    .split-content {
        max-width: 94%;
        padding: 28px;
    }

    .split {
        min-height: auto;
        padding: 20px 0;
    }

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

@media (max-width: 500px) {
    .hero-content {
        padding-top: 110px;
    }

    .hero-content p,
    .lead {
        font-size: 0.95rem;
    }

    .split-tag {
        font-size: 0.7rem;
        letter-spacing: 0.18em;
    }

    .split h2 {
        font-size: 1.7rem;
    }

    .split-list li {
        padding-left: 14px;
        font-size: 0.9rem;
    }

    .btn,
    .btn-submit {
        letter-spacing: 0.12em;
        padding: 12px 24px;
    }
}