:root {
    --bg: #0f172a;
    --panel: #111827;
    --text: #e5e7eb;
    --muted: #cbd5e1;
    --primary: #38bdf8;
    --primary-600: #0891b2;
    --secondary: #f59e0b;
    --accent: #22c55e;
    --border: #1f2937;
    --shadow: 0 8px 24px rgba(0,0,0,.35);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    /* Option A: full-page background image with overlay and gradient fallback */
    background: linear-gradient(180deg, rgba(10,16,34,0.75), rgba(10,16,34,0.85)), url("assets/bg-site.jpg") center / cover no-repeat fixed, linear-gradient(180deg, var(--bg), #0b1226 40%, #0a1122 100%);
}

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

a {
    color: var(--primary);
    text-decoration: none;
}

    a:hover {
        text-decoration: underline;
    }

.container {
    width: min(1100px, 92%);
    margin-inline: auto;
}

.section {
    padding: 3rem 0;
}

    .section h2 {
        font-size: 1.75rem;
        margin: 0 0 .75rem;
    }

.section-intro {
    color: var(--muted);
    max-width: 60ch;
}

.text-link {
    color: var(--secondary);
    font-weight: 600;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: -9999px;
}

    .skip-link:focus {
        left: 1rem;
        top: 1rem;
        background: var(--primary);
        color: #001018;
        padding: .5rem .75rem;
        border-radius: .25rem;
    }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: saturate(120%) blur(6px);
    background: rgba(10, 16, 34, 0.75);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1rem;
    padding: .75rem 0;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-weight: 700;
    letter-spacing: .2px;
}

.logo-mark {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    background: radial-gradient(circle at 30% 30%, var(--primary), var(--primary-600));
    color: #001018;
    font-weight: 800;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.logo-text {
    color: var(--text);
}

.nav-toggle {
    display: inline-flex;
    flex-direction: column;
    gap: 4px;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #0b1226;
    color: var(--text);
    cursor: pointer;
}

    .nav-toggle .bar {
        width: 20px;
        height: 2px;
        background: var(--text);
        border-radius: 2px;
    }

.main-nav {
    display: none;
}

    .main-nav ul {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        gap: 1rem;
    }

    .main-nav a {
        color: var(--text);
        padding: .5rem .75rem;
        border-radius: 6px;
    }

        .main-nav a:hover {
            background: #0e1933;
        }

.header-cta {
    display: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .75rem 1rem;
    border-radius: 10px;
    font-weight: 600;
    border: 1px solid transparent;
    box-shadow: var(--shadow);
}

.btn-primary {
    background: linear-gradient(90deg, var(--primary), var(--primary-600));
    color: #001018;
}

.btn-secondary {
    background: #192a4d;
    color: var(--text);
    border-color: var(--border);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border-color: var(--border);
}

.btn:hover {
    filter: brightness(1.05);
}

.hero {
    padding: 3.5rem 0;
}

.hero-inner {
    display: grid;
    gap: 2rem;
    align-items: center;
}

.hero-copy h1 {
    font-size: clamp(1.8rem, 2.5vw + 1rem, 3rem);
    margin: 0 0 .75rem;
}

.lead {
    font-size: 1.1rem;
    color: var(--muted);
}

.hero-actions {
    display: flex;
    gap: .75rem;
    margin-top: 1rem;
}

.hero-visual img {
    border-radius: 14px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    background: #0b1226;
}

.cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 1.5rem;
}

.card {
    background: rgba(17, 24, 39, 0.8);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1rem;
    display: grid;
    gap: .5rem;
    transition: transform .2s ease, box-shadow .2s ease;
}

    .card:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 30px rgba(0,0,0,.4);
    }

.card-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
}

.card h3 {
    margin: .25rem 0;
}

.section-actions {
    margin-top: 1rem;
}

.why-us {
    background: radial-gradient(1000px 600px at 10% -10%, rgba(56, 189, 248, .12), transparent 60%), radial-gradient(800px 500px at 90% 10%, rgba(245, 158, 11, .12), transparent 60%);
}

.checklist {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
    display: grid;
    gap: .5rem;
}

.check {
    color: var(--accent);
    margin-right: .5rem;
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

.badge {
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: .375rem .75rem;
    background: #0b1226;
    font-size: .875rem;
    color: var(--muted);
}

.portfolio .section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: .75rem;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.work {
    margin: 0;
    background: rgba(17, 24, 39, 0.8);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
}

    .work img {
        aspect-ratio: 16/10;
        object-fit: cover;
    }

    .work figcaption {
        padding: .75rem;
        color: var(--muted);
    }

.testimonial-slider {
    display: grid;
    gap: .75rem;
}

.slides {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 100%;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(17,24,39,.8);
}

.slide {
    padding: 1rem;
}

    .slide p {
        font-size: 1.05rem;
    }

.controls {
    display: flex;
    gap: .5rem;
    justify-content: flex-end;
}

    .controls button {
        background: #0b1226;
        color: var(--text);
        border: 1px solid var(--border);
        border-radius: 8px;
        padding: .5rem .75rem;
        cursor: pointer;
    }

        .controls button:hover {
            background: #0e1933;
        }

.contact .container {
    display: grid;
    gap: 1.25rem;
}

.contact-form {
    display: grid;
    gap: .75rem;
    background: rgba(17,24,39,.8);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1rem;
}

.form-row {
    display: grid;
    gap: .375rem;
}

label {
    color: var(--muted);
}

input, textarea {
    width: 100%;
    padding: .75rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #0b1226;
    color: var(--text);
}

    input::placeholder, textarea::placeholder {
        color: #91a0b6;
    }

.form-actions {
    display: flex;
    align-items: center;
    gap: .75rem;
}

.form-note {
    color: var(--muted);
    font-size: .875rem;
}

.contact-aside {
    color: var(--muted);
}

.site-footer {
    border-top: 1px solid var(--border);
    background: rgba(8, 13, 26, 0.9);
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 2rem 0 1rem;
}

.footer-col h3 {
    margin: 0 0 .5rem;
}

.footer-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: .375rem;
}

.footer-bottom {
    padding: 1rem 0 2rem;
    color: var(--muted);
}

@media (min-width: 768px) {
    .main-nav {
        display: block;
    }

    .nav-toggle {
        display: none;
    }

    .header-cta {
        display: inline-flex;
    }

    .hero-inner {
        grid-template-columns: 1fr 1fr;
    }

    .cards {
        grid-template-columns: repeat(3, 1fr);
    }

    .grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .footer-inner {
        grid-template-columns: repeat(3, 1fr);
    }
}