:root {
    --primary-color: #4a90e2;
    --secondary-color: #f5a623;
    --background-color: #f4f7f6;
    --text-color: #333;
    --border-color: #ddd;
    --success-color: #28a745;
    --error-color: #dc3545;
}

body {
    font-family: 'Vazirmatn', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    direction: rtl;
}

.container {
    background-color: #fff;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
    overflow: hidden;
}

h1, h2 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 25px;
}

.form-step {
    display: none;
}

.form-step.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

input[type="text"],
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Vazirmatn', sans-serif;
    box-sizing: border-box;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="text"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

textarea {
    resize: vertical;
}

button, .button-group button {
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    background-color: var(--primary-color);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    font-family: 'Vazirmatn', sans-serif;
}

button:hover, .button-group button:hover {
    background-color: #357ABD;
    transform: translateY(-2px);
}

button[type="submit"] {
    background-color: var(--success-color);
}
button[type="submit"]:hover {
    background-color: #218838;
}

.prev-btn {
    background-color: #6c757d;
}
.prev-btn:hover {
    background-color: #5a6268;
}

.navigation-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.button-group {
    display: flex;
    gap: 10px;
}

.button-group button {
    flex-grow: 1;
    background-color: #f0f0f0;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.button-group button.active {
    background-color: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
    box-shadow: 0 2px 5px rgba(245, 166, 35, 0.4);
}

.class-options {
    display: flex;
    gap: 10px;
}

input[type="range"] {
    width: 100%;
    cursor: pointer;
}
#rate_val {
    color: var(--primary-color);
    font-weight: bold;
}

.date-group {
    display: flex;
    gap: 20px;
}
.date-group > div {
    flex: 1;
}

input.p-date {
    background-color: #fff;
    cursor: pointer;
}

.error-message {
    color: var(--error-color);
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    padding: 10px;
    border-radius: 5px;
    margin-top: 15px;
    display: none;
    text-align: center;
}

/* Success Animation */
#step-final { text-align: center; }
.checkmark-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--success-color);
    display: inline-flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    animation: scaleUp 0.4s ease-in-out;
}
.checkmark {
    width: 20px;
    height: 40px;
    border: solid white;
    border-width: 0 8px 8px 0;
    transform: rotate(45deg);
}

@keyframes scaleUp {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

/* Responsive */
@media (max-width: 480px) {
    .container {
        padding: 20px;
    }
    .date-group, .button-group, .class-options {
        flex-direction: column;
    }
}