/* Base Styles */
:root {
    --primary: #2196F3;
    --primary-dark: #1976D2;
    --primary-light: #BBDEFB;
    --primary-very-light: #E3F2FD;
    --secondary: #3F51B5;
    --accent: #FF4081;
    --text-dark: #333333;
    --text-medium: #666666;
    --text-light: #999999;
    --background: #FFFFFF;
    --background-alt: #F5F7FA;
    --border: #E0E0E0;
    --success: #4CAF50;
    --warning: #FFC107;
    --error: #F44336;
    --header-height: 70px;
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --border-radius-lg: 12px;
}

/* Dark Mode Colors */
.dark-mode {
    --primary: #2196F3;
    --primary-dark: #1976D2;
    --primary-light: #1E3A5F;
    --primary-very-light: #162A45;
    --text-dark: #FFFFFF;
    --text-medium: #BBBBBB;
    --text-light: #888888;
    --background: #121212;
    --background-alt: #1E1E1E;
    --border: #333333;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    color: var(--text-dark);
    background-color: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
    position: relative;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
}

p {
    margin-bottom: 1rem;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

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

a:hover {
    color: var(--primary-dark);
}

button {
    cursor: pointer;
    font-family: 'Sarabun', 'Inter', sans-serif;
    transition: var(--transition);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    z-index: -1;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary-very-light);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
}

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

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mb-6 {
    margin-bottom: 1.5rem;
}

.mb-8 {
    margin-bottom: 2rem;
}

.mb-12 {
    margin-bottom: 3rem;
}

.mt-4 {
    margin-top: 1rem;
}

.mt-8 {
    margin-top: 2rem;
}

.flex {
    display: flex;
}

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

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.flex-col {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.gap-4 {
    gap: 1rem;
}

.gap-8 {
    gap: 2rem;
}

.w-full {
    width: 100%;
}

.grid {
    display: grid;
}

.grid-cols-1 {
    grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow);
    height: 60px;
}

.header .container {
    height: 100%;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
}

.logo-img {  
    height: 80px;  
    width: auto;  
    margin-right: 8px; 
    border-radius: 50%;  
    object-fit: contain; 
    display: block;  
}
    
.logo i {
    margin-right: 8px;
    font-size: 28px;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    cursor: pointer;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 24px;
    cursor: pointer;
}

.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: var(--background);
    padding: 20px;
    box-shadow: var(--shadow);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-menu .nav-link {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

/* Hero Section */
.hero {
    padding-top: calc(var(--header-height) + 40px);
    background: linear-gradient(135deg, var(--primary-very-light) 0%, var(--background) 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.hero p {
    font-size: 18px;
    color: var(--text-medium);
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}

.hero-image {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform 0.5s ease;
}

.hero-image:hover {
    transform: translateY(-10px);
}

.hero-stats {
    display: flex;
    gap: 40px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-label {
    font-size: 14px;
    color: var(--text-medium);
    font-weight: 500;
}

.floating-element {
    position: absolute;
    background-color: white;
    border-radius: var(--border-radius);
    padding: 16px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: float 3s ease-in-out infinite;
}

.floating-element i {
    font-size: 24px;
    color: var(--primary);
}

.floating-element-1 {
    top: 10%;
    right: 10%;
    animation-delay: 0s;
}

.floating-element-2 {
    bottom: 5%;
    left: 5%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Features Section */
.features {
    background-color: var(--background);
}
.feature-preview {
    text-align: center; /* จัดทุกอย่างใน div นี้ให้อยู่กลาง */
    margin-bottom: 32px;
  }
  
  .feature-caption {
    font-size: 1.15rem;
    font-weight: 500;
    margin-bottom: 12px;  /* ระยะห่าง caption กับภาพ */
    color: #1976d2;       /* สีฟ้าน้ำเงิน หรือเปลี่ยนตาม theme */
    letter-spacing: 0.5px;
  }
.feature-image {
    display: block;
    margin: 24px auto 0 auto;   /* Center image horizontally, space above */
    max-width: 95%;
    width: 80%;               /* ปรับตามต้องการ */
    height: auto;
    border-radius: 16px;        /* มน ๆ ดูโมเดิร์น */
    box-shadow: 0 4px 24px 0 rgba(44, 110, 203, 0.12);  /* เงาสว่างนุ่ม ๆ */
    object-fit: cover;
    transition: box-shadow 0.3s, transform 0.3s;
    filter: blur(0.5px);
  }
  @media (max-width: 600px) {
    .feature-image {
      width: 100%;
      max-width: 100%;
      margin: 16px 0 0 0;
    }
  }
  .feature-image:hover {
    box-shadow: 0 8px 32px 0 rgba(44, 110, 203, 0.18);
    transform: translateY(-4px) scale(1.03);
  }
  
.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary);
    border-radius: 2px;
}

.section-title p {
    font-size: 18px;
    color: var(--text-medium);
    max-width: 600px;
    margin: 0 auto;
}

.feature-card {
    background-color: var(--background);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background-color: var(--primary-very-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background-color: var(--primary);
}

.feature-icon i {
    font-size: 28px;
    color: var(--primary);
    transition: var(--transition);
}

.feature-card:hover .feature-icon i {
    color: white;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--text-medium);
    margin-bottom: 24px;
}

.feature-link {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
    font-weight: 500;
    gap: 8px;
}

.feature-link i {
    transition: var(--transition);
}

.feature-link:hover i {
    transform: translateX(4px);
}

/* Our Commitment Section */
.commitment {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.commitment::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 200%;
    background: rgba(255, 255, 255, 0.05);
    transform: rotate(30deg);
}

.commitment-content {
    position: relative;
    z-index: 1;
}

.commitment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.commitment-item {
    text-align: center;
    padding: 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.commitment-item:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.15);
}

.commitment-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.commitment-icon i {
    font-size: 32px;
    color: white;
}

.commitment-item h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.commitment-item p {
    opacity: 0.9;
    line-height: 1.6;
}

/* Contact Section */
.contact {
    background-color: var(--background-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info {
    padding: 40px;
}

.contact-info h3 {
    font-size: 28px;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.contact-info p {
    color: var(--text-medium);
    margin-bottom: 32px;
    font-size: 18px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 24px;
}

.contact-item-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary-very-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
    flex-shrink: 0;
}

.contact-item-icon i {
    color: var(--primary);
    font-size: 20px;
}

.contact-item-content h4 {
    font-size: 18px;
    margin-bottom: 4px;
    color: var(--text-dark);
}

.contact-item-content p {
    color: var(--text-medium);
    margin: 0;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    font-family: 'Sarabun', sans-serif;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.form-control.textarea {
    min-height: 120px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-submit:hover {
    background-color: var(--primary-dark);
}

.btn-submit:disabled {
    background-color: var(--text-light);
    cursor: not-allowed;
}

/* Partners Section */
.partners {
    padding: 60px 0;
}

.partners-title {
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-medium);
    font-size: 18px;
}

.partners-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
}

.partner-logo {
    max-width: 120px;
    opacity: 0.7;
    transition: var(--transition);
    filter: grayscale(100%);
}

.partner-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
}

/* CTA Section */
.cta {
    background-color: var(--primary);
    color: white;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 200%;
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(30deg);
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 24px;
}

.cta p {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.9;
}

.btn-white {
    background-color: white;
    color: var(--primary);
}

.btn-white:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

/* Footer */
.footer {
    background-color: #1E1E1E;
    color: white;
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.footer-title {
    font-size: 20px;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 12px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary);
}

.footer-about p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 24px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact i {
    margin-right: 12px;
    color: var(--primary);
    margin-top: 4px;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-icon:hover {
    background-color: var(--primary);
    transform: translateY(-5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.animated {
    animation-duration: 1s;
    animation-fill-mode: both;
}

.fadeIn {
    animation-name: fadeIn;
}

.slideInLeft {
    animation-name: slideInLeft;
}

.slideInRight {
    animation-name: slideInRight;
}

.pulse {
    animation-name: pulse;
    animation-duration: 2s;
    animation-iteration-count: infinite;
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 80px;
    height: 80px;
    position: relative;
}

.loader:before, .loader:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--primary);
    opacity: 0.6;
    animation: pulse-ring 1.5s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

.loader:after {
    animation-delay: 0.5s;
}

@keyframes pulse-ring {
    0% {
        transform: scale(0.33);
    }
    80%, 100% {
        opacity: 0;
    }
}

.loader-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background-color: var(--primary);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}

/* Scroll to top button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
    box-shadow: var(--shadow);
}

.scroll-top.active {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
}

/* Counter Animation */
.counter-container {
    text-align: center;
}

.counter {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
}

.counter-label {
    font-size: 16px;
    color: var(--text-medium);
    margin-top: 8px;
}

/* Responsive Styles */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    .hero-img {
        display: block;
        margin: 0 auto;
        max-width: 420px;
        width: 100%;
        border-radius: 20px;
        box-shadow: 0 6px 40px 0 rgba(44, 110, 203, 0.16);
        opacity: 0;
        transform: scale(0.96);
        animation: hero-fade-in 1.1s cubic-bezier(.38,1.03,.61,.98) 0.2s forwards;
      }
      
      @keyframes hero-fade-in {
        from {
          opacity: 0;
          transform: scale(0.96);
        }
        to {
          opacity: 1;
          transform: scale(1);
        }
      }
      
      /* Responsive: Mobile */
      @media (max-width: 600px) {
        .hero-img {
          max-width: 98vw;
          border-radius: 14px;
        }
      }
      
    .section-title h2 {
        font-size: 30px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .commitment-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 540px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-row {
        flex-direction: column;
    }
    
    .hero-content, .hero-image {
        width: 100%;
    }
    
    .hero-image {
        margin-top: 40px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 16px;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .grid-cols-3 {
        grid-template-columns: repeat(1, 1fr);
    }
    
    .feature-card {
        margin-bottom: 30px;
    }

    .commitment-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .container {
        width: 100%;
        padding: 0 20px;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .contact-form, .contact-info {
        padding: 24px;
    }
}