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

:root {
    --black: #000000;
    --red: #dd1338;
    --white: #ffffff;
    --grey: #666666;
    --light-grey: #e0e0e0;
}

html {
    scroll-behavior: smooth;
    scroll-snap-type: y mandatory;
    overflow-y: scroll;
}

body {
    font-family: 'IBM Plex Mono', monospace;
    background: var(--white);
    color: var(--black);
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
}

/* ── Fullscreen Sections ── */

.screen {
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 80px 24px 40px;
    position: relative;
    scroll-snap-align: start;
}

.screen-inner {
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

/* ── Top Bar ── */

.topbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 100;
    padding: 18px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--light-grey);
}

.logo {
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.5px;
}

.topbar-links {
    display: flex;
    gap: 28px;
}

.topbar-links a {
    font-size: 13px;
    color: var(--grey);
    letter-spacing: 0.5px;
    transition: color 0.2s;
}

.topbar-links a:hover {
    color: var(--red);
}

/* ── Dot Navigation ── */

.dot-nav {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1.5px solid var(--black);
    background: transparent;
    transition: background 0.3s, border-color 0.3s, transform 0.3s;
    padding: 0;
}

.dot.active {
    background: var(--red);
    border-color: var(--red);
    transform: scale(1.3);
}

.dot:hover {
    border-color: var(--red);
}

/* ── Scroll Hint ── */

.scroll-hint {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    color: var(--grey);
    letter-spacing: 3px;
    text-transform: uppercase;
    opacity: 1;
    transition: opacity 0.5s;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

/* ── Accent ── */

.accent {
    color: var(--red);
}

/* ── Hero ── */

.tag {
    font-size: 13px;
    color: var(--red);
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.screen h1 {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -1px;
    margin-bottom: 24px;
}

.sub {
    font-size: 14px;
    color: var(--grey);
    line-height: 1.8;
    margin-bottom: 40px;
}

.cta {
    font-size: 14px;
    font-weight: 600;
    color: var(--red);
    letter-spacing: 0.5px;
    transition: letter-spacing 0.2s;
    display: inline-block;
}

.cta:hover {
    letter-spacing: 2px;
}

/* ── Section Label ── */

.section-label {
    font-size: 13px;
    color: var(--red);
    margin-bottom: 40px;
    letter-spacing: 0.5px;
}

/* ── Services ── */

.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px 56px;
}

.service-num {
    font-size: 12px;
    color: var(--light-grey);
    font-weight: 600;
    display: block;
    margin-bottom: 10px;
}

.service h2 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: -0.3px;
}

.service p {
    font-size: 13px;
    color: var(--grey);
    line-height: 1.8;
}

/* ── About ── */

.about-text {
    font-size: 15px;
    line-height: 1.9;
    max-width: 580px;
    color: var(--black);
    margin-bottom: 32px;
}

.about-tagline {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.6;
    letter-spacing: -0.3px;
}

/* ── Contact ── */

.contact-heading {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
}

.contact-sub {
    font-size: 14px;
    color: var(--grey);
    margin-bottom: 28px;
}

.email-link {
    font-size: 16px;
    font-weight: 600;
    color: var(--red);
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.email-link:hover {
    border-bottom-color: var(--red);
}

/* ── Footer (inside contact screen) ── */

footer {
    position: absolute;
    bottom: 24px;
    left: 24px;
    font-size: 12px;
    color: var(--grey);
}

.footer-dot {
    margin: 0 8px;
}

/* ── Mobile ── */

@media (max-width: 640px) {

    .topbar-links {
        display: none;
    }

    .dot-nav {
        right: 14px;
        gap: 12px;
    }

    .dot {
        width: 8px;
        height: 8px;
    }

    .screen {
        padding: 72px 20px 32px;
    }

    .screen h1 {
        font-size: 26px;
        letter-spacing: -0.5px;
    }

    .sub {
        font-size: 13px;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .service h2 {
        font-size: 16px;
    }

    .about-text {
        font-size: 14px;
    }

    .about-tagline {
        font-size: 16px;
    }

    .contact-heading {
        font-size: 24px;
    }

    footer {
        left: 20px;
        bottom: 16px;
        font-size: 11px;
    }
}

@media (max-width: 380px) {
    .screen h1 {
        font-size: 22px;
    }

    .screen {
        padding: 64px 16px 24px;
    }
}