/* =============================================
   ANGSA4D Blog - Ultra Modern Stylesheet
   Animated, Gradient-Rich, Next-Gen Design
   ============================================= */

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Modern Color Palette */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --accent-light: #f472b6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --text-color: #1e293b;
    --text-light: #64748b;
    --light-bg: #f8fafc;
    --white: #ffffff;
    --gray: #6b7280;
    --dark: #0f172a;
    --dark-blue: #1e1b4b;
    
    /* Gradient Colors */
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-5: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    
    /* Transitions */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-color: 0 10px 30px -5px rgba(102, 126, 234, 0.3);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.5);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    overflow-x: hidden;
    position: relative;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

/* Header Styles - Glassmorphism Effect */
.header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.8rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.header-top {
    background: var(--gradient-primary);
    padding: 0.5rem 0;
    font-size: 0.85rem;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.header-top::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

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

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.logo span {
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-menu li a {
    color: var(--text-color);
    font-weight: 600;
    padding: 0.7rem 1.3rem;
    border-radius: 12px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.nav-menu li a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: var(--transition);
    z-index: -1;
}

.nav-menu li a:hover::before,
.nav-menu li a.active::before {
    left: 0;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-color);
}

.mobile-menu-toggle {
    display: none;
    background: var(--gradient-primary);
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: var(--transition);
}

.mobile-menu-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

/* Hero Section - Ultra Modern with Animated Gradient */
.hero {
    background: 
        linear-gradient(135deg, rgba(102, 126, 234, 0.95) 0%, rgba(118, 75, 162, 0.95) 50%, rgba(236, 72, 153, 0.95) 100%),
        url('https://imgscenter.io/images/2025/11/15/RJ003.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--white);
    padding: 10rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    position: relative;
    animation: fadeInUp 1s ease;
    line-height: 1.2;
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 2.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    position: relative;
    animation: fadeInUp 1s ease 0.2s both;
    line-height: 1.8;
}

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

.btn {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    background: var(--white);
    color: var(--primary-color);
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.05rem;
    transition: var(--transition);
    border: 3px solid var(--white);
    position: relative;
    overflow: hidden;
    z-index: 1;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--gradient-2);
    transition: width 0.6s, height 0.6s, top 0.6s, left 0.6s;
    transform: translate(-50%, -50%);
    z-index: -1;
}

.btn:hover::before {
    width: 400px;
    height: 400px;
}

.btn:hover {
    color: var(--white);
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    border: 3px solid var(--white);
    color: var(--white);
    margin-left: 1rem;
}

.btn-secondary::before {
    background: var(--white);
}

.btn-secondary:hover {
    color: var(--primary-color);
    border-color: var(--white);
}

/* Section Styles */
.section {
    padding: 6rem 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease;
}

.section-title h2 {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 5px;
    background: var(--gradient-2);
    border-radius: 10px;
    animation: scaleIn 0.8s ease 0.3s both;
}

@keyframes scaleIn {
    from {
        width: 0;
    }
    to {
        width: 100px;
    }
}

.section-title p {
    color: var(--text-light);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Grid Layouts */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

/* Card Styles - Modern Glassmorphism */
.card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-slow);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.5);
    animation: fadeInUp 0.8s ease both;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--shadow-2xl), var(--shadow-color);
}

.card-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.card:hover .card-img {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.card-content {
    padding: 2rem;
    position: relative;
    z-index: 1;
}

.card-title {
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.card:hover .card-title {
    transform: translateX(5px);
}

.card-text {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(102, 126, 234, 0.1);
}

.read-more {
    color: var(--primary-color);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    border-radius: 50px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
    transition: var(--transition);
}

.read-more:hover {
    background: var(--gradient-primary);
    color: var(--white);
    transform: translateX(5px);
    box-shadow: var(--shadow-color);
}

/* Features Section */
.features {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    position: relative;
}

.feature-card {
    text-align: center;
    padding: 3rem 2rem;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    transition: var(--transition-slow);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
    z-index: 0;
}

.feature-card:hover::before {
    opacity: 0.1;
}

.feature-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: var(--shadow-2xl), var(--shadow-color);
    border-color: rgba(102, 126, 234, 0.3);
}

.feature-icon {
    font-size: 3.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    display: inline-block;
    animation: bounce 2s ease-in-out infinite;
    position: relative;
    z-index: 1;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

/* Contact Form - Modern Design */
.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: 25px;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.8rem;
    color: var(--text-color);
    font-weight: 600;
    font-size: 1.05rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem 1.2rem;
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.8);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* Service Cards - Gradient Borders */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: 20px;
    border-left: 5px solid transparent;
    border-image: var(--gradient-primary) 1;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.05;
    transition: var(--transition-slow);
}

.service-card:hover::before {
    left: 0;
}

.service-card:hover {
    transform: translateX(10px) scale(1.02);
    box-shadow: var(--shadow-2xl), var(--shadow-color);
}

.service-icon {
    font-size: 3rem;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* Blog Sidebar */
.blog-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

.sidebar {
    position: sticky;
    top: 120px;
    height: fit-content;
}

.sidebar-widget {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.sidebar-widget:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.sidebar-widget h3 {
    font-size: 1.4rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid transparent;
    border-image: var(--gradient-primary) 1;
}

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

.widget-list li {
    padding: 1rem 0;
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
    transition: var(--transition);
}

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

.widget-list li:hover {
    padding-left: 10px;
    background: rgba(102, 126, 234, 0.05);
}

.widget-list a {
    color: var(--text-color);
    transition: var(--transition);
    display: block;
}

.widget-list a:hover {
    color: var(--primary-color);
}

/* Footer - Modern Gradient */
.footer {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
    color: var(--white);
    padding: 4rem 0 1rem;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--white);
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--gradient-2);
    border-radius: 10px;
}

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

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
    display: inline-block;
}

.footer-section a:hover {
    color: var(--white);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    justify-content: center;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    transition: var(--transition);
    border: 2px solid transparent;
}

.social-links a:hover {
    background: var(--gradient-primary);
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--shadow-glow);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Breadcrumb - Modern */
.breadcrumb {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(102, 126, 234, 0.2);
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.breadcrumb-list li::after {
    content: '›';
    color: var(--primary-color);
    font-weight: 700;
}

.breadcrumb-list li:last-child::after {
    content: '';
}

.breadcrumb-list a {
    color: var(--primary-color);
    transition: var(--transition);
}

.breadcrumb-list a:hover {
    color: var(--accent-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1.5rem;
        gap: 0;
        box-shadow: var(--shadow-xl);
        border-radius: 0 0 20px 20px;
        z-index: 999;
    }
    
    .nav-menu.active {
        display: flex;
        animation: slideDown 0.3s ease;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu li a {
        display: block;
        padding: 1rem;
        color: var(--text-color);
    }
    
    .hero {
        padding: 6rem 0;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .btn-secondary {
        margin-left: 0;
        margin-top: 1rem;
        display: block;
    }
    
    .blog-layout {
        grid-template-columns: 1fr;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Advanced Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@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 scaleUp {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

/* Loading Animation - Modern Spinner */
.loading {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(102, 126, 234, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

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

/* Scroll Animation Classes */
.fade-in {
    animation: fadeIn 0.8s ease;
}

.slide-in-left {
    animation: slideInLeft 0.8s ease;
}

.slide-in-right {
    animation: slideInRight 0.8s ease;
}

.scale-up {
    animation: scaleUp 0.8s ease;
}

/* Utility Classes - Modern */
.text-center {
    text-align: center;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mt-4 { margin-top: 4rem; }
.mt-5 { margin-top: 5rem; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mb-4 { margin-bottom: 4rem; }
.mb-5 { margin-bottom: 5rem; }

.p-1 { padding: 1rem; }
.p-2 { padding: 2rem; }
.p-3 { padding: 3rem; }
.p-4 { padding: 4rem; }
.p-5 { padding: 5rem; }

.bg-light {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
}

.bg-dark {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    color: var(--white);
}

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

/* Badge & Tag Styles */
.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.badge-secondary {
    background: var(--gradient-2);
}

.badge-success {
    background: var(--gradient-4);
}

/* Floating Elements Effect */
.float {
    animation: floating 3s ease-in-out infinite;
}

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

/* Pulse Effect */
.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Glow Effect */
.glow {
    box-shadow: var(--shadow-glow);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
    }
    to {
        box-shadow: 0 0 40px rgba(102, 126, 234, 0.6);
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-2);
}

/* Selection Color */
::selection {
    background: var(--primary-color);
    color: var(--white);
}

::-moz-selection {
    background: var(--primary-color);
    color: var(--white);
}

/* Smooth Scroll Indicator */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--gradient-primary);
    z-index: 9999;
    transition: width 0.2s ease;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-xl);
    cursor: pointer;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--shadow-glow);
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .sidebar,
    .btn,
    .back-to-top {
        display: none;
    }
    
    body {
        background: white;
    }
    
    .section {
        padding: 2rem 0;
    }
}