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

body {
    background-color: #050505;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.logo-container {
    text-align: center;
    padding: 20px;
    opacity: 0;
    animation: fadeIn 1.5s ease-in forwards;
}

.logo {
    max-width: 100%;
    height: auto;
    max-height: 80vh;
    width: auto;
    margin-bottom: 20px;
}

.tagline {
    color: #fff;
    font-size: 1.2rem;
    font-weight: 300;
    letter-spacing: 2px;
    opacity: 0;
    animation: fadeIn 1.5s ease-in forwards;
    animation-delay: 0.5s;
    margin-bottom: 15px;
}

.telegram-link {
    color: #0088cc;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 1px;
    opacity: 0;
    animation: fadeIn 1.5s ease-in forwards;
    animation-delay: 1s;
    transition: color 0.3s ease;
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid #0088cc;
    border-radius: 4px;
}

.telegram-link:hover {
    color: #fff;
    background-color: #0088cc;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .logo {
        max-width: 90%;
    }
    .tagline {
        font-size: 1rem;
        padding: 0 20px;
    }
    .telegram-link {
        font-size: 0.9rem;
    }
}

/* add to your <style> */
:invalid{ outline: none; }
:invalid:not(:focus){ border-color:#b00020; box-shadow:0 0 0 3px rgba(176,0,32,.2) inset; }

/* Inputs, textareas, selects */
input:invalid,
select:invalid,
textarea:invalid {
    border-color:#b00020 !important;
    box-shadow:0 0 0 3px rgba(176,0,32,.25) inset !important;
}

/* Firefox being Firefox */
input:-moz-ui-invalid,
select:-moz-ui-invalid,
textarea:-moz-ui-invalid {
    border-color:#b00020 !important;
    box-shadow:0 0 0 3px rgba(176,0,32,.25) inset !important;
}

/* Highlight the visible wrappers when a child is invalid */
.field:has(input:invalid),
.field:has(select:invalid),
.field:has(textarea:invalid) {
    /* optional subtle glow around the field block */
    outline: 2px solid rgba(176,0,32,.35);
    outline-offset: 4px;
}

/* Checkbox/Radio tiles */
.choice.invalid {
    border-color:#b00020 !important;
    box-shadow:0 0 0 3px rgba(176,0,32,.25) inset !important;
}

/* Optional: label hint color when field invalid */
.field:has(:invalid) > label {
    color:#ffb3b9;
}