/* Основные стили формы (кратко) */
.collaboration-section { padding: 80px 20px; background: #000; }
.form-container { max-width: 800px; margin: 0 auto; background: #0a0a0a; padding: 40px; border-radius: 25px; border: 1px solid #1a1a1a; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.input-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.input-group input, .input-group textarea { 
    background: #111; border: 1px solid #222; padding: 15px; border-radius: 12px; color: #fff; outline: none; transition: 0.3s;
}
.input-group input:focus { border-color: #D4FC1E; box-shadow: 0 0 10px rgba(212, 252, 30, 0.2); }
textarea { min-height: 120px; resize: vertical; }

/* НОВАЯ КНОПКА С ЭФФЕКТАМИ */
.btn-submit-glow {
    position: relative;
    width: 100%;
    padding: 18px;
    background: #D4FC1E;
    color: #000;
    border: none;
    border-radius: 12px;
    font-weight: 900;
    text-transform: uppercase;
    cursor: pointer;
    overflow: hidden; /* Важно для волн */
    transition: all 0.3s ease;
    z-index: 1;
}

/* Свечение при наведении */
.btn-submit-glow:hover {
    box-shadow: 0 0 25px rgba(212, 252, 30, 0.6);
    transform: translateY(-2px);
}

/* Стили для волны (Ripple) */
.ripple {
    position: absolute;
    background: rgba(0, 0, 0, 0.15);
    transform: translate(-50%, -50%);
    pointer-events: none;
    border-radius: 50%;
    animation: ripple-animation 0.6s linear;
}

@keyframes ripple-animation {
    from { width: 0; height: 0; opacity: 0.5; }
    to { width: 500px; height: 500px; opacity: 0; }
}

@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }