/* การตั้งค่าพื้นฐาน */
:root {
    --primary: #008B8B; /* เขียวฟ้า DarkCyan */
    --primary-light: #E0FFFF; /* ฟ้าอ่อน */
    --dark: #2F4F4F; /* เขียวเข้มเกือบดำ */
    --black: #1a1a1a;
    --white: #ffffff;
    --gray: #f4f4f4;
    --gold: #D4AF37; /* สีทองสำหรับโปรโมชั่น/รีวิว */
}

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

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; padding: 0; margin: 0; }

/* Header & Nav */
header {
    background: var(--white);
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
}
.logo img { height: 60px; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-weight: 500; color: var(--dark); }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.btn-book {
    background: var(--primary);
    color: var(--white) !important;
    padding: 10px 25px;
    border-radius: 50px;
    font-weight: bold;
}
.btn-book:hover { background: var(--dark); }

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url('https://doctoraesthetictachileik.wordpress.com/wp-content/uploads/2021/08/fb_img_1628355134454.jpg?w=1200'); /* ใช้รูป Banner ถ้ามี */
    background-size: cover;
    background-position: center;
    color: var(--white);
    text-align: center;
    padding: 120px 20px;
}
.hero h1 { font-size: 3rem; text-shadow: 2px 2px 4px rgba(0,0,0,0.5); margin-bottom: 20px; }
.hero p { font-size: 1.2rem; margin-bottom: 30px; text-shadow: 1px 1px 2px rgba(0,0,0,0.5); }

/* Sections */
section { padding: 80px 20px; }
.container { max-width: 1200px; margin: 0 auto; }
.bg-light { background-color: var(--gray); }
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 { color: var(--primary); font-size: 2.5rem; }
.section-title p { color: #666; margin-top: 10px; }

/* Services Grid */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.card {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    text-align: center;
    border-bottom: 4px solid var(--primary);
}
.card h3 { color: var(--dark); margin: 20px 0; }
.icon-box { font-size: 3rem; margin-bottom: 15px; }

/* Doctor Profile */
.profile-box {
    display: flex;
    align-items: center;
    gap: 50px;
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.profile-img img { border-radius: 10px; width: 100%; max-width: 400px; }
.profile-info h3 { color: var(--primary); font-size: 2rem; margin-bottom: 15px; }

/* Footer */
footer { background: var(--dark); color: var(--white); padding: 50px 0 20px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; padding-bottom: 40px; }
.footer h4 { color: var(--primary-light); margin-bottom: 20px; font-size: 1.2rem; }
.copyright { text-align: center; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; }

/* Responsive */
@media (max-width: 768px) {
    .navbar { flex-direction: column; gap: 20px; }
    .nav-links { flex-wrap: wrap; justify-content: center; gap: 15px; }
    .profile-box { flex-direction: column; }
    .hero h1 { font-size: 2rem; }
}