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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    background: #0d0d0d;
    color: rgba(255, 255, 255, 0.82);
    min-height: 100vh;
    position: relative; /* absolute canvas için referans noktası */
}

/* ── Background canvas — viewport'a sabitlenmiş ─────────── */
#bg-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    display: block;
}

/* ── Hero — stays fixed while contact slides over it ────── */
#hero {
    position: sticky;
    top: 0;
    z-index: 1;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#logo-container {
    position: relative;
    width: 111px;
    height: 111px;
    flex-shrink: 0;
    filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.95));
}

#logo-shader {
    position: absolute;
    inset: 0;
}

#slogan {
    margin-top: 33px;
    font-size: 14px;
    line-height: 1.4em;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.95);
}

/* ── Contact section — frosted dark glass panel ─────────── */
/* margin-top: -125px → sayfa yüklenirken 125px görünür (peek)  */
/* z-index: 2 → hero'nun üzerine kayar                          */
#contact {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 100vh;
    min-height: 389px;
    margin-top: -125px;
    padding: 0 40px 40px;
    background-color: rgba(13, 13, 13, 0.72);
    -webkit-backdrop-filter: blur(26px);
    backdrop-filter: blur(26px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 -7px 78px rgba(0, 0, 0, 0.18);
}

/* Arrow — top of panel, centered */
#scroll-arrow {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 28px 0 0;
    text-decoration: none;
    cursor: pointer;
    flex-shrink: 0;
}

#scroll-arrow svg { transition: opacity 0.2s; }
#scroll-arrow:hover svg { opacity: 0.75; }

/* Center group: email button + disclaimer */
#contact-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

#email-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 11px 24px;
    font-family: inherit;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: #0d0d0d;
    background: rgba(255, 255, 255, 0.92);
    border-radius: 283px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    text-decoration: none;
    cursor: pointer;
    backdrop-filter: blur(8px);
    box-shadow:
        rgba(255,255,255,0.6) 0px -1px 6px 0px inset,
        rgba(0,0,0,0.35) 0px 4px 12px 0px;
    transition: opacity 0.2s;
}

#email-btn:hover { opacity: 0.85; }

#disclaimer {
    max-width: 480px;
    font-size: 12px;
    line-height: 1.6em;
    letter-spacing: -0.02em;
    color: rgba(255, 255, 255, 0.45);
    text-align: center;
}

/* ── Footer ─────────────────────────────────────────────── */
footer {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 400;
    letter-spacing: -0.02em;
    color: rgba(255, 255, 255, 0.35);
}

footer strong {
    font-weight: 500;
    color: rgba(255, 255, 255, 0.82);
}