/* GLOBAL RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Inter", sans-serif;
}

/* GLOBAL BACKGROUND – Dark AI gradient */
body {
    background: radial-gradient(circle at center, #0d1117 0%, #05070a 90%);
    color: #d0d7e1;
    line-height: 1.6;
    overflow-x: hidden;
}

/* =========================================================
   AI NEON GRID BACKGROUND – BLUE FUTURISTIC
========================================================= */

.ai-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    background: 
        repeating-linear-gradient(
            90deg,
            rgba(0, 120, 255, 0.06) 0px,
            rgba(0, 120, 255, 0.06) 1px,
            transparent 1px,
            transparent 80px
        ),
        repeating-linear-gradient(
            0deg,
            rgba(0, 120, 255, 0.06) 0px,
            rgba(0, 120, 255, 0.06) 1px,
            transparent 1px,
            transparent 80px
        );
    z-index: -5;
    animation: gridMove 35s linear infinite;
    opacity: 0.45;
}

@keyframes gridMove {
    from { transform: translate(0, 0); }
    to   { transform: translate(-400px, -400px); }
}

/* =========================================================
   HEADER
========================================================= */

.header {
    width: 100%;
    padding: 26px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(5, 10, 20, 0.55);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(0, 153, 255, 0.15);
    position: fixed;
    top: 0;
    z-index: 1000;
}

/* Logo */
.logo img {
    height: 105px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 12px rgba(0, 140, 255, 0.55));
}

/* Navbar links */
nav a {
    color: #e8f4ff;
    margin-left: 34px;
    text-decoration: none;
    font-size: 17px;
    font-weight: 500;
    letter-spacing: 0.6px;
    transition: 0.25s ease;
    opacity: 0.85;
}

nav a:hover {
    color: #4db8ff;
    opacity: 1;
}

/* =========================================================
   HERO SECTION + PULSING SHIELD
========================================================= */

.hero {
    position: relative;
    padding-top: 260px;
    padding-bottom: 220px;
    text-align: center;
    width: 82%;
    margin: auto;
    overflow: hidden;
}

.hero h1 {
    font-size: 62px;
    font-weight: 700;
    letter-spacing: 1.2px;
    color: #e9f4ff;
    text-shadow: 0 0 20px rgba(0, 150, 255, 0.35);
}

.hero p {
    font-size: 22px;
    opacity: 0.82;
    max-width: 780px;
    margin: 20px auto 45px auto;
}

/* CTA Button */
.cta-btn {
    padding: 14px 38px;
    background: #4db8ff;
    color: #000;
    border-radius: 10px;
    font-weight: 700;
    text-decoration: none;
    transition: 0.25s;
    box-shadow: 0 0 20px rgba(0,150,255,0.45);
}

.cta-btn:hover {
    background: #77ccff;
    box-shadow: 0 0 30px rgba(0,150,255,0.6);
}

/* HUGE GLOWING SHIELD BEHIND HERO */
.hero-shield {
    position: absolute;
    top: 52%;
    left: 50%;
    width: 650px;
    height: 650px;
    background: url("assets/logo.png") no-repeat center center / contain;
    opacity: 0.12;
    transform: translate(-50%, -50%);
    filter: drop-shadow(0 0 80px rgba(0,150,255,0.55))
            drop-shadow(0 0 140px rgba(0,150,255,0.35));
    animation: pulseGlow 6.2s ease-in-out infinite;
    z-index: -1;
}

@keyframes pulseGlow {
    0% {
        opacity: 0.10;
        transform: translate(-50%, -50%) scale(0.94);
        filter: drop-shadow(0 0 40px rgba(0,150,255,0.28));
    }
    50% {
        opacity: 0.22;
        transform: translate(-50%, -50%) scale(1.08);
        filter: drop-shadow(0 0 110px rgba(0,150,255,0.55));
    }
    100% {
        opacity: 0.10;
        transform: translate(-50%, -50%) scale(0.94);
        filter: drop-shadow(0 0 45px rgba(0,150,255,0.30));
    }
}

/* =========================================================
   FEATURES (PRODUCT)
========================================================= */

.features {
    width: 82%;
    margin: 140px auto;
    text-align: center;
}

.features h2 {
    margin-bottom: 35px;
    font-size: 36px;
    font-weight: 700;
    color: #e9f4ff;
    text-shadow: 0 0 20px rgba(0,150,255,0.3);
}

.sub {
    opacity: 0.75;
    margin-top: -10px;
    margin-bottom: 40px;
}

.feature-list {
    display: flex;
    gap: 28px;
    margin-top: 50px;
}

.feature {
    width: 33%;
    background: rgba(0,25,50,0.25);
    padding: 35px;
    border-radius: 16px;
    border: 1px solid rgba(0,150,255,0.18);
    transition: 0.3s;
}

.feature:hover {
    background: rgba(0,40,70,0.35);
    transform: translateY(-4px);
}

.feature h3 {
    margin-bottom: 14px;
    font-size: 22px;
    font-weight: 600;
    color: #cfe6ff;
}

.feature p {
    opacity: 0.9;
    font-size: 16px;
}

/* =========================================================
   PILOT
========================================================= */

.pilot {
    text-align: center;
    margin: 150px auto;
}

.cta-btn-secondary {
    padding: 14px 38px;
    background: transparent;
    border: 2px solid #4db8ff;
    color: #4db8ff;
    border-radius: 10px;
    font-weight: 700;
    transition: 0.25s;
}

.cta-btn-secondary:hover {
    background: #4db8ff;
    color: #000;
    box-shadow: 0 0 30px rgba(0,150,255,0.6);
}

/* =========================================================
   CONTACT
========================================================= */

.contact {
    text-align: center;
    margin: 150px auto;
}

.contact p {
    margin-top: 14px;
    opacity: 0.85;
    font-size: 18px;
}

/* =========================================================
   FOOTER
========================================================= */

.footer {
    text-align: center;
    padding: 40px;
    color: #789;
    background: rgba(0,20,40,0.25);
    margin-top: 100px;
    font-size: 14px;
}

/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 900px) {

    .logo img {
        height: 80px;
    }

    .hero h1 {
        font-size: 42px;
    }

    .feature-list {
        flex-direction: column;
    }

    .feature {
        width: 100%;
    }
}