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

:root {
    --black: #0a0a0a;
    --white: #f5f5f5;
    --gray: #888;
    --gray-light: #ccc;
    --gray-dark: #333;
}

body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-color: var(--black);
    color: var(--white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ── Decorative grid lines ── */
.grid-lines {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.grid-lines span {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: rgba(255, 255, 255, 0.04);
}

.grid-lines span:nth-child(1) { left: 20%; }
.grid-lines span:nth-child(2) { left: 40%; }
.grid-lines span:nth-child(3) { left: 60%; }
.grid-lines span:nth-child(4) { left: 80%; }

/* ── Main layout ── */
.page {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ── Top bar ── */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 3rem;
}

.logo img {
    height: 32px;
    width: auto;
    display: block;
}

.tag {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gray);
}

/* ── Hero ── */
.hero {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem 3rem;
    gap: 2.5rem;
}

.hero-heading {
    font-size: clamp(2.5rem, 7vw, 6rem);
    font-weight: 200;
    letter-spacing: -0.02em;
    line-height: 1.1;
    max-width: 800px;
}

.hero-heading strong {
    font-weight: 700;
    display: inline;
}

.divider {
    width: 60px;
    height: 1px;
    background: var(--gray);
}

.hero-sub {
    font-size: 1rem;
    font-weight: 300;
    color: var(--gray-light);
    max-width: 440px;
    line-height: 1.7;
    letter-spacing: 0.01em;
}

/* ── Notify form ── */
.notify-form {
    display: flex;
    gap: 0;
    max-width: 420px;
    width: 100%;
    margin-top: 0.5rem;
}

.notify-form input {
    flex: 1;
    padding: 0.85rem 1.2rem;
    border: 1px solid var(--gray-dark);
    background: transparent;
    color: var(--white);
    font-size: 0.85rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
}

.notify-form input::placeholder {
    color: var(--gray);
    letter-spacing: 0.05em;
}

.notify-form input:focus {
    border-color: var(--white);
}

.notify-form button {
    padding: 0.85rem 1.8rem;
    border: 1px solid var(--white);
    background: var(--white);
    color: var(--black);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: inherit;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
    white-space: nowrap;
}

.notify-form button:hover {
    background: transparent;
    color: var(--white);
}

/* ── Bottom bar ── */
.bottom-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 3rem;
    gap: 1rem;
}

.copyright {
    font-size: 0.7rem;
    color: var(--gray);
    letter-spacing: 0.05em;
}

.social {
    display: flex;
    gap: 1.5rem;
}

.social a {
    color: var(--gray);
    text-decoration: none;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.3s;
}

.social a:hover {
    color: var(--white);
}

/* ── Floating accent circle ── */
.accent-circle {
    position: fixed;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.03);
    top: 50%;
    right: -150px;
    transform: translateY(-50%);
    pointer-events: none;
    z-index: 0;
}

.accent-circle::after {
    content: "";
    position: absolute;
    inset: 40px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.02);
}

/* ── Responsive ── */
@media (max-width: 600px) {
    .top-bar,
    .bottom-bar {
        padding: 1.5rem 1.5rem;
    }

    .hero {
        padding: 2rem 1.5rem;
    }

    .notify-form {
        flex-direction: column;
    }

    .notify-form button {
        padding: 0.85rem;
    }

    .bottom-bar {
        flex-direction: column;
        text-align: center;
    }

    .accent-circle {
        display: none;
    }
}