/* Design: dark, modern, inspired by cybersecurity themes */
:root {
    --bg: #0b1220;
    --bg-soft: #0e1627;
    --card: #0f1b31;
    --text: #e6edf7;
    --muted: #9fb0c7;
    --primary: #39bdf8;
    --primary-strong: #1aa7e9;
    --accent: #7c5cff;
    --border: #1c2a46;
    --radius: 10px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Poppins', sans-serif;
    color: var(--text);
    background: radial-gradient(1200px 700px at 15% 10%, rgba(60,110,255,0.08), transparent 60%),
               radial-gradient(900px 600px at 85% 20%, rgba(0,212,255,0.08), transparent 60%),
               var(--bg);
    line-height: 1.6;
}

.container { width: 90%; max-width: 1120px; margin: 0 auto; position: relative; z-index: 1; }

h1 { font-size: 2.6rem; line-height: 1.2; margin-bottom: 0.75rem; }
h2 { font-size: 2rem; text-align: center; margin-bottom: 2rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
p { color: var(--muted); }

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

/* Header */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 20;
    background: rgba(11, 18, 32, 0.8);
    backdrop-filter: saturate(140%) blur(10px);
    border-bottom: 1px solid var(--border);
}
.header .container { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.logo img { height: 44px; display: block; background: #ffffff; padding: 6px 10px; border-radius: 5px; border: 1px solid var(--border); }
.main-nav ul { list-style: none; display: flex; gap: 24px; }
.main-nav a { color: var(--text); opacity: 0.85; padding-bottom: 4px; position: relative; }
.main-nav a.active::after, .main-nav a:hover::after {
    content: ''; position: absolute; left: 0; bottom: -6px; width: 100%; height: 2px; background: linear-gradient(90deg, var(--primary), var(--accent));
}
.mobile-nav-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 1.4rem; }

/* Hero */
.hero { padding: 140px 0 90px; position: relative; overflow: hidden; }
.hero-title { background: linear-gradient(180deg, #fff, #b9dfff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { max-width: 760px; margin: 10px 0 24px; }
.hero-ctas { display: flex; gap: 12px; }
.cta-button {
    display: inline-block; background: linear-gradient(90deg, var(--primary), var(--accent));
    color: #06101d; font-weight: 600; padding: 12px 22px; border-radius: 999px; border: 0; box-shadow: var(--shadow);
}
.cta-button.cta-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.cta-button:hover { filter: brightness(1.05); }
.hero-bg { position: absolute; inset: -20%; pointer-events: none; background:
    radial-gradient(600px 280px at 20% 30%, rgba(57, 189, 248, 0.15), transparent 60%),
    radial-gradient(560px 260px at 80% 70%, rgba(124, 92, 255, 0.12), transparent 60%);
    animation: floatBg 18s ease-in-out infinite alternate; }
@keyframes floatBg { 0%{transform:translate3d(0,0,0)} 50%{transform:translate3d(2%, -1%, 0)} 100%{transform:translate3d(-2%, 1%, 0)} }

/* Sections */
section { padding: 70px 0; position: relative; overflow: hidden; }
/* Decorative section backgrounds (non-blocking, behind content) */
.services::before {
    content: '';
    position: absolute;
    inset: -2px;
    background:
        radial-gradient(600px 280px at 12% 22%, rgba(57,189,248,0.10), transparent 60%),
        radial-gradient(520px 240px at 88% 78%, rgba(124,92,255,0.08), transparent 60%),
        repeating-linear-gradient(120deg, rgba(255,255,255,0.03) 0px, rgba(255,255,255,0.03) 2px, transparent 3px, transparent 12px);
    pointer-events: none;
    z-index: 0;
}

.about::before {
    content: '';
    position: absolute;
    width: 1200px;
    height: 1200px;
    left: -20%;
    top: -40%;
    background: radial-gradient(closest-side, rgba(124,92,255,0.08), transparent 70%),
                radial-gradient(closest-side, rgba(57,189,248,0.10), transparent 70%);
    filter: blur(20px);
    pointer-events: none;
    z-index: 0;
}

.about-grid { display: grid; grid-template-columns: 180px 1fr; gap: 24px; align-items: start; }
.about-photo { margin: 0; }
.about-photo img {
    width: 160px; height: 160px; object-fit: cover;
    border-radius: 50%;
    border: 2px solid var(--border);
    box-shadow: var(--shadow);
    background: #ffffff;
}

.contact::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(57,189,248,0.08) 1px, transparent 1px);
    background-size: 22px 22px;
    background-position: 0 0;
    pointer-events: none;
    z-index: 0;
}

/* Services */
.services { background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0)); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; margin-top: 18px; }
.service-card { background: linear-gradient(180deg, rgba(20,33,61,0.85), rgba(20,33,61,0.6)); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); transition: transform .25s ease, box-shadow .25s ease; }
.service-card i { font-size: 1.8rem; color: var(--primary); margin-bottom: 10px; }
.service-card p { margin-bottom: 10px; }
.service-card .link {
    display: inline-block;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    background-size: 200% 100%;
    background-position: 0% 50%;
    color: #06101d;
    font-weight: 600;
    padding: 10px 18px;
    border-radius: 999px;
    border: 0;
    box-shadow: var(--shadow);
    transition: transform .2s ease, box-shadow .2s ease, background-position .3s ease;
}
.service-card .link:hover {
    transform: translateY(-2px);
    background-position: 100% 50%;
    box-shadow: 0 16px 40px rgba(0,0,0,0.45);
}
.service-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(0,0,0,0.45); }

/* Portfolio (accordion) */
.portfolio { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0)); }
.accordion { display: grid; gap: 14px; margin-top: 10px; }
.accordion-item { background: linear-gradient(180deg, rgba(20,33,61,0.85), rgba(20,33,61,0.6)); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.accordion-trigger { width: 100%; text-align: left; padding: 18px 22px; color: var(--text); background: transparent; border: 0; display: flex; align-items: center; justify-content: space-between; font-size: 1.1rem; font-weight: 600; cursor: pointer; }
.accordion-trigger i { transition: transform .25s ease; color: var(--primary); }
.accordion-item.open .accordion-trigger i { transform: rotate(180deg); }
.accordion-panel { display: none; padding: 12px 22px 20px; border-top: 1px solid var(--border); }
.accordion-item.open .accordion-panel { display: block; }
.accordion-panel p { margin: 10px 0; }
.accordion-trigger .trigger-label { display: inline-flex; gap: 10px; align-items: baseline; flex: 1 1 auto; flex-wrap: wrap; }
.accordion-trigger .trigger-name { font-weight: 600; }
.accordion-trigger .trigger-subtitle { color: var(--muted); font-weight: 500; font-size: .95rem; }
.accordion-panel h4 { margin: 12px 0 6px; font-size: 1.05rem; color: var(--text); }

/* Contact */
.contact { padding: 0; }
.contact .container { text-align: center; }
.contact p { margin-bottom: 14px; }
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 32px; align-items: start; margin-top: 10px; }
.contact-form form { display: flex; flex-direction: column; gap: 14px; }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; padding: 12px; border: 1px solid var(--border); border-radius: 5px; font-family: inherit; font-size: 1rem; background: var(--bg-soft); color: var(--text); }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(57,189,248,0.15); }
.contact-form textarea { min-height: 120px; resize: vertical; }
.contact-form button { align-self: flex-start; }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 24px 0; text-align: center; color: var(--muted); }

/* Simple reveals */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 991px) {
    .mobile-nav-toggle { display: inline-block; }
    .main-nav { display: none; position: absolute; right: 5%; top: 64px; background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px; }
    .main-nav.active { display: block; }
    .main-nav ul { flex-direction: column; gap: 12px; }

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

@media (max-width: 600px) {
    .about-grid { grid-template-columns: 1fr; }
    .about-photo { justify-self: center; }
    .about-photo img { width: 110px; height: 110px; }
}