:root {
    --primary-color: #4BB34B;
    --secondary-color: #2AE42A;
    --background-color: #f4f4f4;
    --text-color: #333333;
    --accent-color: #FFC107;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: all 0.3s ease;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes subtle-bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

html,
body {
    height: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    line-height: 1.6;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 15px;
    perspective: 1000px;
}

.modal-content {
    background-color: white;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1), 0 5px 15px rgba(0, 0, 0, 0.07);
    width: 100%;
    max-width: 500px;
    padding: 40px;
    position: relative;
    text-align: center;
    transform-style: preserve-3d;
    transform: rotateX(-10deg);
    opacity: 0;
    animation: fadeIn 0.6s forwards ease-out;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.9);
}

.close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 30px;
    color: #aaaaaa;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0.6;
}

.close:hover {
    color: var(--primary-color);
    transform: rotate(90deg);
    opacity: 1;
}

.modal-content h2 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-size: clamp(22px, 5vw, 28px);
    letter-spacing: -0.5px;
    position: relative;
}

.modal-content h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    transform: translateX(-50%);
}

.modal-content p {
    color: #666666;
    margin-bottom: 30px;
    font-size: clamp(15px, 4vw, 17px);
    line-height: 1.7;
}

.form-group {
    position: relative;
    margin-bottom: 25px;
}

.form-group .icon {
    position: absolute;
    top: 50%;
    left: 15px;
    transform: translateY(-50%);
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.4s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.form-group input:focus+.icon,
.form-group textarea:focus+.icon {
    transform: translateY(-50%) scale(1.1);
    background-color: var(--accent-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 15px 15px 60px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: clamp(15px, 4vw, 16px);
    outline: none;
    transition: all 0.4s ease;
    background-color: #f9f9f9;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(75, 179, 75, 0.2);
}

.rating {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 25px;
}

.rating h2 {
    margin-right: 20px;
    font-size: clamp(18px, 4vw, 22px);
    color: #555555;
}

.rating__star {
    font-size: clamp(28px, 6vw, 34px);
    margin: 0 7px;
    cursor: pointer;
    color: #dddddd;
    transition: all 0.3s ease;
}

.rating__star:hover,
.rating__star.active {
    color: var(--accent-color);
    animation: subtle-bounce 0.4s;
}

button[type="submit"] {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 12px;
    padding: 15px;
    font-size: clamp(16px, 4vw, 18px);
    width: 100%;
    cursor: pointer;
    letter-spacing: 1px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(75, 179, 75, 0.2);
}

button[type="submit"]::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: all 0.6s;
}

button[type="submit"]:hover::before {
    left: 100%;
}

button[type="submit"]:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 25px rgba(75, 179, 75, 0.3);
}

button[type="submit"]:disabled {
    background: #cccccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

#thank-you-message,
#error-message {
    font-size: clamp(18px, 4vw, 22px);
    margin-top: 20px;
    font-weight: bold;
    animation: pulse 1s infinite;
}

#thank-you-message {
    color: var(--primary-color);
}

#error-message {
    color: #dc3545;
}

/* Responsive Design */
@media screen and (max-width: 480px) {
    .modal-content {
        padding: 25px;
        margin: 0 10px;
    }

    .close {
        top: 15px;
        right: 15px;
        font-size: 25px;
    }

    .form-group .icon {
        width: 35px;
        height: 35px;
    }

    .form-group input,
    .form-group textarea {
        padding: 12px 12px 12px 50px;
    }

    .rating__star {
        margin: 0 5px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
        color: #f4f4f4;
    }

    .modal-content {
        background: rgba(44, 62, 80, 0.9);
        color: #f4f4f4;
    }

    .form-group input,
    .form-group textarea {
        background-color: #34495e;
        border-color: #2c3e50;
        color: #ecf0f1;
    }

    .modal-content h2 {
        color: #ecf0f1;
    }

    .modal-content p {
        color: #bdc3c7;
    }
}