/* assets/css/style.css */
:root {
    --primary-color: #28a745; /* เขียวหลัก */
    --primary-dark-color: #218838; /* เขียวเข้ม */
    --secondary-color: #f8f9fa; /* สีพื้นหลัง */
    --text-color: #333;
    --border-color: #ddd;
    --form-bg: #fff;
}

body {
    font-family: 'Sarabun', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--secondary-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 50px auto;
    padding: 30px;
    background-color: var(--form-bg);
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    color: var(--primary-dark-color);
    text-align: center;
    margin-bottom: 20px;
}

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

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

.form-group input[type="text"],
.form-group input[type="date"],
.form-group input[type="tel"],
.form-group textarea {
    width: calc(100% - 20px);
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: 'Sarabun', sans-serif;
    font-size: 16px;
}

.form-group textarea {
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 5px rgba(40, 167, 69, 0.3);
}

.btn {
    display: block;
    width: 100%;
    padding: 12px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-decoration: none;
    text-align: center;
}

.btn:hover {
    background-color: var(--primary-dark-color);
    transform: translateY(-2px);
}

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

/* Feedback เมื่อคลิก */
.btn:active {
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Alert Messages */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 5px;
    font-weight: 600;
    text-align: center;
}

.alert.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Icon styling */
.form-group label .fas {
    margin-right: 8px;
    color: var(--primary-dark-color);
}

.text-center {
    text-align: center;
}

.icon-success {
    font-size: 80px;
    color: var(--primary-color);
    margin: 30px 0;
}

.back-home {
    margin-top: 30px;
    display: inline-block; /* เพื่อให้สามารถจัดตำแหน่งกึ่งกลางได้ */
    width: auto; /* ให้ปุ่มขนาดพอดีกับเนื้อหา */
    padding-left: 30px;
    padding-right: 30px;
}

/* Responsive Web Design */
@media (max-width: 768px) {
    .container {
        margin: 20px;
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .form-group input[type="text"],
    .form-group input[type="date"],
    .form-group input[type="tel"],
    .form-group textarea {
        width: calc(100% - 16px); /* ลด padding เล็กน้อยสำหรับจอเล็ก */
        padding: 8px;
    }
    .btn {
        font-size: 16px;
        padding: 10px 15px;
    }
    h1 {
        font-size: 24px;
    }
    .icon-success {
        font-size: 60px;
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s forwards;
}

.slide-in {
    opacity: 0;
    transform: translateY(20px);
    animation: slideIn 0.8s forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }
.delay-4 { animation-delay: 0.8s; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* Button hover feedback */
.btn:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}