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

body {
    font-family:
        "Segoe UI",
        system-ui,
        -apple-system,
        sans-serif;
    background: #0a0a0a;
    color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
}

/* LEFT / LOGO */
.logo-side {
    width: 50%;
    min-height: 100vh;
    background: #2a2a2a;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 2rem;
}

.logo-side::after {
    content: "";
    position: absolute;
    right: 0;
    top: 10%;
    bottom: 10%;
    width: 1px;
    background: linear-gradient(to bottom, transparent, #888 30%, #888 70%, transparent);
    opacity: 0.5;
}

.logo-wrapper {
    max-width: 320px;
    width: 100%;
    text-align: center;
    animation: fadeIn 0.9s ease-out;
}

.logo-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

/* RIGHT / EMAIL */
.form-side {
    width: 50%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
    background: linear-gradient(145deg, #0d0d0d 0%, #111 100%);
}

.contact-container {
    width: 100%;
    max-width: 420px;
    animation: fadeIn 0.9s ease-out 0.15s both;
    text-align: center;
}

.contact-container h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    color: #fff;
}

.contact-container .subtitle {
    color: #888;
    font-size: 0.95rem;
    margin-bottom: 2.5rem;
    line-height: 1.5;
}

.email-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
}

.email-address {
    font-size: 1.35rem;
    font-weight: 600;
    color: #e0e0e0;
    letter-spacing: 0.02em;
    word-break: break-all;
    padding: 1.1rem 1.5rem;
    background: #1a1a1a;
    border: 1px solid #2a2a2a;
    border-radius: 12px;
    width: 100%;
    transition:
        border-color 0.25s,
        background 0.25s;
    cursor: pointer;
    user-select: all;
}

.email-address:hover {
    border-color: #555;
    background: #1f1f1f;
}

.btn-copy {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.95rem 1.8rem;
    background: #e0e0e0;
    color: #111;
    font-size: 0.95rem;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    letter-spacing: 0.02em;
    transition:
        background 0.25s,
        transform 0.2s,
        box-shadow 0.25s;
    min-width: 180px;
}

.btn-copy:hover {
    background: #fff;
    box-shadow: 0 6px 24px rgba(255, 255, 255, 0.12);
    transform: translateY(-1px);
}

.btn-copy:active {
    transform: translateY(0);
}

.btn-copy.copied {
    background: #4ade80;
    color: #052e16;
}

.btn-copy svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.hint {
    margin-top: 1.5rem;
    font-size: 0.8rem;
    color: #666;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 900px) {
    body {
        flex-direction: column;
    }

    .logo-side {
        width: 100%;
        min-height: 40vh;
        padding: 2.5rem 1.5rem 1.5rem;
    }

    .logo-side::after {
        display: none;
    }

    .logo-wrapper {
        max-width: 180px;
    }

    .form-side {
        width: 100%;
        min-height: auto;
        padding: 2rem 1.5rem 3.5rem;
    }

    .contact-container h1 {
        font-size: 1.65rem;
    }

    .email-address {
        font-size: 1.15rem;
    }
}

@media (max-width: 480px) {
    .logo-wrapper {
        max-width: 140px;
    }
    .contact-container {
        max-width: 100%;
    }
    .email-address {
        font-size: 1.05rem;
        padding: 1rem 1.2rem;
    }
}