/* ==========================================================================
   1. FONTS & ROOT SETUP (รีเซ็ตค่าเริ่มต้นและฟอนต์)
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Prompt:wght@300;400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Prompt', sans-serif;
}

body {
    background: radial-gradient(circle at 50% 50%, #1e293b 0%, #0f172a 100%);
    color: #f8fafc;
    line-height: 1.8;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ==========================================================================
   2. PREMIUM NAVIGATION BAR (แถบเมนูด้านบน)
   ========================================================================== */
nav {
    position: sticky;
    top: 0;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    /* background: linear-gradient(45deg, #38bdf8, #0ea5e9);
    -webkit-background-clip: text; */
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    letter-spacing: 1px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1rem;
}

nav ul li a {
    color: #94a3b8;
    text-decoration: none;
    font-weight: 500;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

nav ul li a:hover,
nav ul li a.active {
    color: #ffffff;
    background: rgba(56, 189, 248, 0.15);
    box-shadow: inset 0 0 12px rgba(56, 189, 248, 0.2);
    border: 1px solid rgba(56, 189, 248, 0.3);
}

/* ==========================================================================
   3. MAIN GLASSMORPHISM CONTAINER (กล่องกระจกฝ้าหลัก)
   ========================================================================== */
.container {
    max-width: 1000px;
    width: 90%;
    margin: 4rem auto;
    padding: 3.5rem;
    background: rgba(30, 41, 59, 0.45);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    flex: 1;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

h1::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 35px;
    background: linear-gradient(#38bdf8, #0284c7);
    border-radius: 4px;
}

.subtitle {
    color: #94a3b8;
    margin-bottom: 2rem;
    font-size: 1rem;
}

/* ==========================================================================
   4. STYLE สำหรับหน้าแรก (Index - ปรับขนาดโปรไฟล์และข้อความให้ใหญ่ขึ้นเด่นชัด)
   ========================================================================== */
.profile-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* 🔧 ปรับขนาดรูปโปรไฟล์ให้ใหญ่ขึ้นเด่นชัด (จาก 150px เป็น 200px) */
.profile-avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 5px solid rgba(56, 189, 248, 0.6);
    object-fit: cover;
    margin-bottom: 2rem;
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.3);
}

/* 🔧 ปรับหัวข้อประวัติส่วนตัวให้ใหญ่ขึ้นเด่นชัด */
.profile-section h2 {
    font-size: 2.8rem;
    color: #ffffff;
    margin-bottom: 2rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* 🔧 ปรับกล่องข้อความและขนาดตัวอักษรข้อมูลส่วนตัวให้ใหญ่และกว้างเต็มตามากขึ้น */
.info-text-block {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    font-size: 1.3rem;
    /* ขยายขนาดข้อความให้อ่านง่ายขึ้น */
    color: #cbd5e1;
    text-align: left;
    background: rgba(15, 23, 42, 0.5);
    padding: 2rem 3rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    width: 100%;
    max-width: 650px;
    /* ปรับกล่องให้กว้างขึ้นเพื่อสมดุลกับตัวอักษรใหญ่ */
}

.info-text-block strong {
    color: #38bdf8;
    display: inline-block;
    min-width: 150px;
    /* ปรับความกว้างของข้อความตัวหนาหน้าชื่อ */
}

/* ==========================================================================
   5. STYLE สำหรับหน้างานอดิเรก & กิจกรรม (จัดให้ชิ้นที่ 3 อยู่กึ่งกลางแถวล่าง)
   ========================================================================== */
.showcase-flex {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}

.premium-card {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s ease;
    flex: 1 1 calc(50% - 1rem);
    max-width: calc(50% - 1rem);
    min-width: 290px;
}

.premium-card:hover {
    transform: translateY(-8px);
    border-color: rgba(56, 189, 248, 0.4);
}

.card-img-wrapper {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.premium-card:hover .card-img-wrapper img {
    transform: scale(1.05);
}

.card-body {
    padding: 1.8rem;
}

.card-body h3 {
    color: #ffffff;
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
}

.card-body p {
    color: #94a3b8;
    font-size: 0.95rem;
    text-align: left;
}

/* ==========================================================================
   6. STYLE สำหรับตาราง (หน้าประวัติการศึกษา)
   ========================================================================== */
.table-responsive {
    overflow-x: auto;
    width: 100%;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
    text-align: left;
    background: rgba(15, 23, 42, 0.3);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

th,
td {
    padding: 18px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

th {
    background-color: rgba(56, 189, 248, 0.1);
    color: #38bdf8;
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
}

td {
    color: #cbd5e1;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
    color: #ffffff;
}

/* ==========================================================================
   7. STYLE สำหรับหน้าติดต่อฉัน (Contact)
   ========================================================================== */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 3rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.03);
    padding: 1.2rem;
    border-radius: 14px;
    margin-bottom: 1.2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-pane {
    background: rgba(15, 23, 42, 0.4);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.cyber-input {
    width: 100%;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.9rem;
    color: #ffffff;
    border-radius: 10px;
    margin-bottom: 1.5rem;
}

.cyber-btn {
    background: linear-gradient(45deg, #0ea5e9, #2563eb);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 10px;
    width: 100%;
    cursor: pointer;
    font-weight: 600;
}

/* ==========================================================================
   8. RESPONSIVE & FOOTER (รองรับการแสดงผลบนมือถือ)
   ========================================================================== */
@media (max-width: 850px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .container {
        padding: 2rem 1.5rem;
    }

    .premium-card {
        max-width: 100%;
        flex: 1 1 100%;
    }

    /* Responsive เพิ่มเติมสำหรับตัวหนังสือหน้าแรกเมื่ออยู่บนจอมือถือ */
    .profile-section h2 {
        font-size: 2rem;
    }

    .info-text-block {
        font-size: 1.1rem;
        padding: 1.5rem 2rem;
    }

    .info-text-block strong {
        min-width: 110px;
    }
}

footer {
    background: #090d16;
    color: #475569;
    text-align: center;
    padding: 1.8rem;
    margin-top: auto;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.02);
}