/* Base & Reset */
*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans";
    background: #0a0a0a;
    color: #fff;
    line-height: 1.5;
}

:root {
    --accent-cyan: #00d4ff;
    --accent-pink: #ff00ff;
    --glass-bg: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.10);
    --shadow-strong: 0 20px 60px rgba(0,0,0,0.6);
    --radius: 16px;
}

/* Sections hidden until JS enables */
section {
    display: block;
}

.js section {
    display: none;
}

    .js section.active {
        display: block;
    }

/* Links */
a {
    color: inherit;
}

/* Navigation */
.nav-wrap {
    position: fixed;
    inset: 0 auto auto 0;
    width: 100%;
    z-index: 100;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .75rem 1rem;
    gap: .5rem;
    background: rgba(10,10,10,0.45);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}

.brand {
    display: flex;
    align-items: center;
    gap: .6rem;
    font-weight: 700;
    letter-spacing: .2px;
}

    .brand .dot {
        width: 10px;
        height: 10px;
        border-radius: 999px;
        background: radial-gradient(circle at 30% 30%, var(--accent-cyan), var(--accent-pink));
        box-shadow: 0 0 12px var(--accent-cyan);
    }

.nav-links {
    display: flex;
    align-items: center;
    gap: .5rem;
}

    .nav-links a {
        text-decoration: none;
        font-weight: 600;
        padding: .5rem .9rem;
        border-radius: 12px;
        transition: .2s ease;
        color: #fff;
    }

        .nav-links a:hover, .nav-links a.active {
            background: rgba(255,255,255,0.10);
            color: var(--accent-cyan);
            box-shadow: 0 6px 18px rgba(0,212,255,0.18);
        }

.menu-btn {
    display: none;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: #fff;
    border-radius: 12px;
    padding: .5rem .7rem;
    cursor: pointer;
}

@media (max-width: 800px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 56px;
        right: 10px;
        flex-direction: column;
        background: rgba(10,10,10,0.7);
        backdrop-filter: blur(12px);
        padding: .6rem;
        border: 1px solid var(--glass-border);
        border-radius: 12px;
        box-shadow: var(--shadow-strong);
    }

        .nav-links.open {
            display: flex;
        }

    .menu-btn {
        display: inline-flex;
    }
}

/* Hero + animated background */
header {
    position: relative;
    min-height: 88vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 1rem 3rem;
    overflow: hidden;
}

    header h1 {
        font-size: clamp(2.2rem, 7vw, 4rem);
        margin: 0;
        color: var(--accent-cyan);
        text-shadow: 0 0 18px var(--accent-cyan);
    }

    header p {
        margin-top: .75rem;
        color: #ddd;
        font-size: clamp(1rem, 2.4vw, 1.25rem);
    }

.bg-animation {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

    .bg-animation div {
        position: absolute;
        border-radius: 999px;
        background: radial-gradient(circle, rgba(0,212,255,0.30), rgba(255,0,255,0.16));
        filter: blur(0.2px);
        animation: float 22s infinite ease-in-out;
    }

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

    50% {
        transform: translateY(-120px) rotate(180deg);
    }

    100% {
        transform: translateY(0) rotate(360deg);
    }
}

/* Sections + cards */
.wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    position: relative;
    z-index: 1;
}

h2 {
    font-size: clamp(1.4rem, 3.2vw, 2rem);
    margin: 0 0 1rem;
    color: var(--accent-pink);
    text-shadow: 0 0 10px var(--accent-pink);
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
}

.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow-strong);
    backdrop-filter: blur(12px);
    transition: transform .25s ease, box-shadow .25s ease;
}

    .card:hover {
        transform: translateY(-8px);
        box-shadow: 0 24px 60px rgba(0,212,255,0.18);
    }

    .card h3 {
        margin: 0 0 .5rem;
        color: var(--accent-cyan);
        font-size: 1.1rem;
    }

    .card p {
        margin: 0;
        color: #d7d7d7;
    }

/* Forms */
form {
    display: flex;
    flex-direction: column;
    gap: .85rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-strong);
}

input:not([type="checkbox"]), textarea {
    width: 100%;
    padding: .8rem .9rem;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.06);
    color: #fff;
    outline: none;
}

    input::placeholder, textarea::placeholder {
        color: #bfbfbf;
    }

    input:focus, textarea:focus {
        box-shadow: 0 0 0 3px rgba(0,212,255,0.18);
        border-color: var(--accent-cyan);
    }

button {
    align-self: flex-start;
    padding: .9rem 1.1rem;
    border-radius: 12px;
    border: none;
    color: #fff;
    font-weight: 700;
    cursor: pointer;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-pink));
    transition: transform .2s ease, opacity .2s ease;
}

    button:hover {
        transform: translateY(-1px);
        opacity: .95;
    }

.scroll-to-header {
    color: var(--accent-pink);
    text-decoration: underline;
    cursor: pointer;
    transition: color 0.2s;
}
.scroll-to-header:hover {
    color: var(--accent-cyan);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 1rem;
    color: #cfcfcf;
}

    footer a {
        color: var(--accent-cyan);
        text-decoration: none;
    }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}