/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Sarabun', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* ===== CUSTOM VARIABLES ===== */
:root {
    --primary-color: #FFD700;
    --primary-dark: #B8860B;
    --secondary-color: #1a237e;
    --secondary-dark: #0d1457;
    --accent-color: #ff6b35;
    --dark-bg: #0a0e27;
    --light-bg: #f8f9fa;
    --text-light: #ffffff;
    --text-dark: #333333;
    --gradient-primary: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    --gradient-secondary: linear-gradient(135deg, #1a237e 0%, #3f51b5 100%);
    --gradient-dark: linear-gradient(135deg, #0a0e27 0%, #1a237e 100%);
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 15px 35px rgba(0, 0, 0, 0.2);
}

/* ===== TYPOGRAPHY ===== */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
}

/* ===== NAVIGATION ===== */
.navbar {
    background: var(--gradient-dark) !important;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    color: var(--primary-color) !important;
    transition: all 0.3s ease;
}

.navbar-brand:hover {
    color: var(--text-light) !important;
    transform: scale(1.05);
}

.navbar-nav .nav-link {
    color: var(--text-light) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    background: var(--gradient-primary);
    color: var(--text-dark) !important;
    transform: translateY(-2px);
}

/* ===== HERO SECTION ===== */
.hero-section {
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%23FFD700" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="%23FFD700" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="%23FFA500" opacity="0.15"/><circle cx="10" cy="60" r="0.5" fill="%23FFA500" opacity="0.15"/><circle cx="90" cy="40" r="0.5" fill="%23FFD700" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    animation: float 20s ease-in-out infinite;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 39, 0.8);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 2rem;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-buttons .btn {
    margin: 0.5rem;
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    color: var(--text-dark);
    box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
    background: var(--gradient-primary);
    color: var(--text-dark);
}

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

.btn-outline-light:hover {
    background: var(--primary-color);
    color: var(--text-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

/* ===== HERO IMAGE & FLOATING CARDS ===== */
.hero-image {
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-heavy);
    text-align: center;
    transition: all 0.3s ease;
    animation: float 6s ease-in-out infinite;
}

.floating-card:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-card:nth-child(2) {
    top: 50%;
    right: 10%;
    animation-delay: 2s;
}

.floating-card:nth-child(3) {
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

.floating-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.floating-card h5 {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.floating-card p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

.floating-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* ===== FEATURES SECTION ===== */
.features-section {
    background: var(--light-bg);
    position: relative;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 215, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--text-dark);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h4 {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.feature-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 0.5rem 0;
    color: #555;
    display: flex;
    align-items: center;
}

.feature-list li i {
    color: var(--primary-color);
    margin-right: 0.5rem;
    font-size: 0.9rem;
}

/* ===== BENEFITS SECTION ===== */
.benefits-section {
    background: white;
    position: relative;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding: 1.5rem;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.benefit-item:hover {
    background: rgba(255, 215, 0, 0.05);
    transform: translateX(10px);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.5rem;
    flex-shrink: 0;
}

.benefit-icon i {
    font-size: 1.5rem;
    color: var(--text-dark);
}

.benefit-content h5 {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.benefit-content p {
    color: #666;
    margin: 0;
    line-height: 1.6;
}

.benefits-image {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.stats-card {
    background: var(--gradient-secondary);
    padding: 3rem 2rem;
    border-radius: 25px;
    box-shadow: var(--shadow-heavy);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.stats-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

.stats-item {
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
}

.stats-item:last-child {
    margin-bottom: 0;
}

.stats-item h3 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stats-item p {
    color: var(--text-light);
    font-weight: 500;
    font-size: 1.1rem;
}

/* ===== CONTACT SECTION ===== */
.contact-section {
    background: var(--gradient-dark);
    position: relative;
}

.contact-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: 25px;
    box-shadow: var(--shadow-heavy);
}

.contact-item {
    text-align: center;
    padding: 2rem;
    border-radius: 20px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.contact-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    background: rgba(255, 215, 0, 0.05);
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.contact-icon i {
    font-size: 2rem;
    color: var(--text-dark);
}

.contact-info h5 {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.contact-info p {
    color: #666;
    margin-bottom: 1rem;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--dark-bg);
    color: var(--text-light);
    border-top: 1px solid rgba(255, 215, 0, 0.2);
}

.footer p {
    margin: 0;
    opacity: 0.8;
}

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

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .floating-card {
        position: relative;
        margin: 1rem;
        display: inline-block;
    }
    
    .hero-image {
        height: auto;
        margin-top: 2rem;
    }
    
    .floating-card:nth-child(1),
    .floating-card:nth-child(2),
    .floating-card:nth-child(3) {
        position: relative;
        top: auto;
        left: auto;
        right: auto;
        bottom: auto;
    }
    
    .benefit-item {
        flex-direction: column;
        text-align: center;
    }
    
    .benefit-icon {
        margin: 0 auto 1rem;
    }
    
    .contact-card {
        padding: 2rem 1rem;
    }
    
    .stats-card {
        padding: 2rem 1rem;
    }
    
    .stats-item h3 {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons .btn {
        display: block;
        margin: 0.5rem 0;
        width: 100%;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-shadow {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.bg-gradient-primary {
    background: var(--gradient-primary);
}

.bg-gradient-secondary {
    background: var(--gradient-secondary);
}

.border-gradient {
    border: 2px solid;
    border-image: var(--gradient-primary) 1;
}

/* ===== SCROLL ANIMATIONS ===== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ===== LOADING SPINNER ===== */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}