/* Color Palette:
   --primary-light: #B0E0E6; (Powder Blue - Main Pastel Blue)
   --bg-light: #F0F8FF; (Alice Blue - Lightest Background)
   --text-dark: #333333; (Dark Gray for readability)
   --accent: #87CEEB; (Sky Blue - For buttons/active states)
   --footer-bg: #E0FFFF; (Light Cyan - Footer background)
*/

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

body {
    font-family: 'Prompt', sans-serif; /* เปลี่ยนเป็น Prompt */
    background-color: var(--bg-light); 
    color: var(--text-dark);
    line-height: 1.6;
}
:root {
    --primary-light: #B0E0E6;
    --bg-light: #F0F8FF;
    --text-dark: #333333;
    --accent: #87CEEB;
    --footer-bg: #E0FFFF;
}

a {
    text-decoration: none;
    color: var(--accent);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 1. Header and Navigation */
.main-header {
    background-color: white;
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05); /* เงาบางๆ ให้ดูคลีน */
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 28px;
    font-weight: 600;
    color: var(--accent);
}

.main-nav ul {
    list-style: none;
    display: flex;
}

.main-nav ul li a {
    color: var(--text-dark);
    padding: 10px 15px;
    display: block;
    /* เพิ่มหรือแก้ไข font-weight ตรงนี้ */
    font-weight: 600; 
    /* ค่า 600 คือ Semi-Bold ซึ่งมักจะดูดีและไม่หนาเกินไปในดีไซน์คลีนๆ
       ถ้าอยากได้หนามาก (Bold) ให้ใช้ค่า 700
    */
    transition: color 0.3s, border-bottom 0.3s;
}

.main-nav ul li a:hover {
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
}

/* 2. Hero Section */
.hero {
    text-align: center;
    padding: 60px 20px 40px;
    background-color: var(--bg-light); 
}

.hero h1 {
    font-size: 36px;
    color: var(--accent);
    margin-bottom: 5px;
}

.hero h2 {
    font-size: 20px;
    color: var(--text-dark);
    font-weight: 300;
}

/* 3. Document Section */
.document-section {
    padding: 40px 0;
}

.section-title {
    text-align: center;
    font-size: 28px;
    color: var(--accent);
    margin-bottom: 30px;
    font-weight: 600;
}

.document-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.doc-group {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08); /* เงาเพื่อให้ดูเป็น "การ์ด" */
    width: 100%;
    max-width: 380px;
    transition: transform 0.3s;
}

.doc-group:hover {
    transform: translateY(-3px);
}

.doc-group-title {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 15px;
    border-bottom: 2px solid var(--primary-light);
    padding-bottom: 10px;
}

.doc-group-title i {
    color: var(--accent);
    margin-right: 8px;
}

.doc-list {
    list-style: none;
}

.doc-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px dashed #eee;
    font-size: 14px;
}

.doc-list li:last-child {
    border-bottom: none;
}

.download-btn {
    background-color: var(--accent);
    color: white;
    padding: 5px 12px;
    border-radius: 5px;
    font-size: 12px;
    font-weight: 600;
    transition: background-color 0.3s;
}

.download-btn:hover {
    background-color: #5bbde7; /* Darker Sky Blue */
}

/* Highlight for Important info */
.doc-group.important {
    background-color: var(--primary-light);
}

.doc-group.important .doc-group-title {
    border-bottom: 2px solid var(--accent);
}

.doc-list li.highlight {
    font-weight: 600;
    color: var(--text-dark);
}

/* 4. Report Section (Statistics) */
.report-section {
    padding: 40px 0 60px;
    background-color: var(--footer-bg); /* พื้นหลังสีฟ้าพาสเทลอ่อนๆ */
    margin-top: 40px;
}

.report-cards {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.report-card {
    background-color: white;
    border-radius: 10px;
    width: 300px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.card-header {
    background-color: var(--primary-light);
    color: var(--text-dark);
    padding: 15px;
    text-align: center;
    font-weight: 600;
    font-size: 18px;
}

.card-body {
    list-style: none;
    padding: 20px;
}

.card-body li {
    padding: 8px 0;
    color: var(--text-dark);
    font-size: 15px;
}

.card-body i {
    color: var(--accent);
    margin-right: 8px;
}

/* 5. Footer */
.main-footer {
    background-color: var(--accent);
    color: white;
    padding-top: 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 15px;
    font-weight: 600;
}

.footer-col p {
    font-size: 14px;
    margin-bottom: 5px;
}

.footer-col a {
    color: white;
    font-weight: 400;
    border-bottom: 1px dotted white;
}

.social-icons {
    margin-bottom: 10px;
}

.social-icons a {
    font-size: 20px;
    margin-right: 15px;
    color: white;
    border-bottom: none;
}

.copyright {
    text-align: center;
    padding: 15px 0;
    font-size: 13px;
    background-color: #5bbde7; /* Darker shade for copyright bar */
}