/* ── Reset ─────────────────────────────────────────── */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000;
    font-family: 'Orbitron', sans-serif;
}

/* ── Hero ──────────────────────────────────────────── */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #050505 url('banner.jpg') center center / cover no-repeat;
    overflow: hidden;
}

/* Vignette */
.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center,
            transparent 30%,
            rgba(0, 0, 0, 0.7) 100%);
    pointer-events: none;
    z-index: 5;
}

/* ── U N I T E Letters ────────────────────────────── */
.letters-container {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(1.5rem, 4vw, 5rem);
    z-index: 1;
    pointer-events: none;
}

.letter {
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    font-size: clamp(5rem, 14vw, 16rem);
    line-height: 1;
    color: rgba(180, 180, 190, 0.25);
    text-shadow:
        0 0 20px rgba(180, 180, 190, 0.08),
        0 0 40px rgba(180, 180, 190, 0.04);
    user-select: none;
    transition: text-shadow 0.5s ease;
}

/* Glowing letters (U and I) */
.letter-glow {
    color: rgba(255, 255, 255, 0.85);
    text-shadow:
        0 0 20px rgba(255, 255, 255, 0.6),
        0 0 40px rgba(255, 255, 255, 0.3),
        0 0 80px rgba(255, 255, 255, 0.15),
        0 0 120px rgba(200, 220, 255, 0.1);
    animation: letterPulse 3s ease-in-out infinite;
}

/* Pulse animation for glowing letters */
@keyframes letterPulse {

    0%,
    100% {
        text-shadow:
            0 0 20px rgba(255, 255, 255, 0.6),
            0 0 40px rgba(255, 255, 255, 0.3),
            0 0 80px rgba(255, 255, 255, 0.15),
            0 0 120px rgba(200, 220, 255, 0.1);
        opacity: 0.9;
    }

    50% {
        text-shadow:
            0 0 30px rgba(255, 255, 255, 0.9),
            0 0 60px rgba(255, 255, 255, 0.5),
            0 0 100px rgba(255, 255, 255, 0.25),
            0 0 160px rgba(200, 220, 255, 0.15);
        opacity: 1;
    }
}

/* ── Hands ─────────────────────────────────────────── */
.hands-container {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
}

.hand {
    position: absolute;
    width: clamp(280px, 45vw, 700px);
    height: auto;
    object-fit: contain;
}

/* Dark hand – reaching up from bottom-center */
.hand-black {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    filter: brightness(0.9);
}

/* Green hand – reaching down from top-center */
.hand-green {
    top: 0;
    left: 50%;
    transform: translateX(-25%);
    filter:
        drop-shadow(0 0 15px rgba(0, 255, 140, 0.6)) drop-shadow(0 0 40px rgba(0, 255, 140, 0.3)) drop-shadow(0 0 80px rgba(0, 255, 140, 0.15));
    animation: greenGlow 3s ease-in-out infinite;
}

@keyframes greenGlow {

    0%,
    100% {
        filter:
            drop-shadow(0 0 15px rgba(0, 255, 140, 0.6)) drop-shadow(0 0 40px rgba(0, 255, 140, 0.3)) drop-shadow(0 0 80px rgba(0, 255, 140, 0.15));
    }

    50% {
        filter:
            drop-shadow(0 0 25px rgba(0, 255, 140, 0.8)) drop-shadow(0 0 60px rgba(0, 255, 140, 0.5)) drop-shadow(0 0 100px rgba(0, 255, 140, 0.25));
    }
}

/* ── CTA Content ──────────────────────────────────── */
.hero-content {
    position: relative;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 30vh;
}

/* ── UNITE Button ─────────────────────────────────── */
.unite-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 18px 64px;
    border: 2px solid rgba(0, 255, 140, 0.6);
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.35s ease;
    overflow: hidden;
    animation: btnPulse 3s ease-in-out infinite;
}

.btn-text {
    position: relative;
    z-index: 2;
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    font-size: 1.6rem;
    letter-spacing: 0.35em;
    color: #fff;
    text-shadow:
        0 0 10px rgba(0, 255, 140, 0.7),
        0 0 30px rgba(0, 255, 140, 0.4),
        0 0 60px rgba(0, 255, 140, 0.2);
    transition: text-shadow 0.35s ease, color 0.35s ease;
}

/* Animated glow sweep */
.btn-glow {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(120deg,
            transparent 30%,
            rgba(0, 255, 140, 0.15) 50%,
            transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.unite-btn:hover .btn-glow {
    transform: translateX(100%);
}

.unite-btn:hover {
    border-color: rgba(0, 255, 140, 0.9);
    box-shadow:
        0 0 20px rgba(0, 255, 140, 0.35),
        0 0 60px rgba(0, 255, 140, 0.15),
        inset 0 0 20px rgba(0, 255, 140, 0.08);
    background: rgba(0, 255, 140, 0.08);
}

.unite-btn:hover .btn-text {
    text-shadow:
        0 0 14px rgba(0, 255, 140, 0.9),
        0 0 40px rgba(0, 255, 140, 0.6),
        0 0 80px rgba(0, 255, 140, 0.3);
}

.unite-btn:active {
    transform: scale(0.97);
}

@keyframes btnPulse {

    0%,
    100% {
        box-shadow:
            0 0 12px rgba(0, 255, 140, 0.15),
            0 0 40px rgba(0, 255, 140, 0.05);
    }

    50% {
        box-shadow:
            0 0 20px rgba(0, 255, 140, 0.3),
            0 0 60px rgba(0, 255, 140, 0.1);
    }
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 600px) {
    .letter {
        font-size: clamp(3rem, 12vw, 6rem);
    }

    .letters-container {
        gap: 0.8rem;
    }

    .hand {
        width: clamp(180px, 50vw, 350px);
    }

    .btn-text {
        font-size: 1.1rem;
        letter-spacing: 0.25em;
    }

    .unite-btn {
        padding: 14px 40px;
    }

    .hero-content {
        margin-top: 35vh;
    }
}