/* AISOD AI Website - Main Stylesheet */
/* Pure CSS Implementation - No Frameworks */

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

/* Mobile-first responsive design */
html {
    font-size: 14px; /* Smaller base font for mobile */
}

@media (min-width: 768px) {
    html {
        font-size: 16px; /* Standard font size for desktop */
    }
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background-color: #ffffff;
    overflow-x: hidden;
    font-size: 0.95rem;
}

/* ================================================
   Typography
   ================================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; }

p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* ================================================
   Layout Components
   ================================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container { padding: 0 1.5rem; }
}

@media (min-width: 1024px) {
    .container { padding: 0 2rem; }
}

/* ================================================
   Gradient & AI Themed Styles
   ================================================ */
.gradient-text {
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 25%, #6366f1 50%, #8b5cf6 75%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

.ai-gradient {
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 25%, #6366f1 50%, #8b5cf6 75%, #a855f7 100%);
}

/* ================================================
   Button Styles
   ================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 0.8rem;
    line-height: 1;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 0.9rem;
}

.btn-primary {
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 25%, #6366f1 50%, #8b5cf6 75%, #a855f7 100%);
    color: white;
    border: none;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.4);
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 25%, #8b5cf6 50%, #a855f7 75%, #d946ef 100%);
}

.btn-primary:active {
    transform: translateY(-1px) scale(1);
    transition: all 0.1s ease;
}

.btn-outline {
    background: transparent;
    color: #6366f1;
    border: 2px solid #6366f1;
}

.btn-outline:hover {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
    border-color: transparent;
}

.btn-outline:active {
    transform: translateY(0px);
    transition: all 0.1s ease;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    width: 1rem;
    height: 1rem;
}

/* ================================================
   Navigation Styles
   ================================================ */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e7eb;
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    object-fit: cover;
}

.nav-title {
    font-size: 1.125rem;
    font-weight: 700;
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 25%, #6366f1 50%, #8b5cf6 75%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: none;
    gap: 2rem;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    color: #6b7280;
    font-weight: 500;
    transition: color 0.3s ease;
    text-transform: capitalize;
}

.nav-link:hover,
.nav-link.active {
    color: #6366f1;
}

.nav-buttons {
    display: none;
    align-items: center;
    gap: 1rem;
}

@media (min-width: 768px) {
    .nav-buttons {
        display: flex;
    }
}

.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 2rem;
    height: 2rem;
    background: none;
    border: none;
    cursor: pointer;
    gap: 0.25rem;
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

.hamburger-line {
    width: 1.5rem;
    height: 2px;
    background: #374151;
    transition: all 0.3s ease;
}

.mobile-menu {
    display: none;
    background: white;
    border-top: 1px solid #e5e7eb;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu-content {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mobile-nav-link {
    color: #6b7280;
    font-weight: 500;
    padding: 0.5rem 0;
    text-transform: capitalize;
}

.mobile-nav-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid #e5e7eb;
}

/* ================================================
   Hero Section
   ================================================ */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: 
        linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%),
        linear-gradient(90deg, rgba(255, 255, 255, 0.25) 1px, transparent 1px),
        linear-gradient(rgba(255, 255, 255, 0.25) 1px, transparent 1px);
    background-size: 100% 100%, 35px 35px, 35px 35px;
    overflow: hidden;
    padding: 2rem 1rem 3rem 1rem;
}

@media (min-width: 768px) {
    .hero-section {
        padding: 0 2rem 3rem 2rem;
    }
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(90deg, rgba(255, 255, 255, 0.15) 1px, transparent 1px),
        linear-gradient(rgba(255, 255, 255, 0.15) 1px, transparent 1px),
        radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.12) 0%, transparent 50%);
    background-size: 35px 35px, 35px 35px, 100% 100%, 100% 100%;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

@keyframes typewriter {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
    text-align: center;
}

@media (min-width: 768px) {
    .hero-content {
        gap: 3rem;
        text-align: left;
    }
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.hero-text {
    color: white;
    animation: fadeInLeft 1s ease-out;
}

.hero-badge {
    display: inline-block;
    background: rgba(99, 102, 241, 0.2);
    color: #6366f1;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    border: 1px solid rgba(99, 102, 241, 0.3);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out 0.3s both;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 2.75rem;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 3.25rem;
    }
}

.hero-description {
    font-size: 0.9rem;
    color: #d1d5db;
    margin-bottom: 2rem;
    line-height: 1.6;
    animation: fadeInUp 1s ease-out 0.6s both;
}

@media (min-width: 768px) {
    .hero-description {
        font-size: 1rem;
        line-height: 1.7;
    }
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    animation: fadeInUp 1s ease-out 0.9s both;
    width: 100%;
}

.hero-buttons .btn {
    width: 100%;
    justify-content: center;
    padding: 0.875rem 1.5rem;
    font-size: 0.9rem;
}

@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
        width: auto;
    }
    
    .hero-buttons .btn {
        width: auto;
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease-out 0.5s both;
}

.floating-image {
    animation: float 6s ease-in-out infinite;
}

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

.hero-tech-image {
    width: 100%;
    max-width: 350px;
    border-radius: 1rem;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    animation: pulse-glow 2s ease-in-out infinite alternate;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .hero-tech-image {
        max-width: 450px;
        box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    }
}

@media (min-width: 1024px) {
    .hero-tech-image {
        max-width: 500px;
        margin: 0;
    }
}

@keyframes pulse-glow {
    from { box-shadow: 0 0 20px rgba(59, 130, 246, 0.3); }
    to { box-shadow: 0 0 30px rgba(99, 102, 241, 0.5); }
}

/* ================================================
   Stats Section
   ================================================ */
.stats-section {
    padding: 3rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-top: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 2.5rem;
        padding: 0;
    }
}

.stat-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 1rem;
    border: 1px solid rgba(99, 102, 241, 0.1);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
}

.stat-item:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 15px 35px rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 25%, #6366f1 50%, #8b5cf6 75%, #a855f7 100%);
    border-radius: 1rem 1rem 0 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stat-item:hover::before {
    opacity: 1;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 25%, #6366f1 50%, #8b5cf6 75%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    line-height: 1;
}

@media (min-width: 768px) {
    .stat-number {
        font-size: 2.25rem;
    }
}

.stat-label {
    color: #475569;
    font-weight: 600;
    font-size: 0.9rem;
    line-height: 1.3;
}

/* ================================================
   Section Headers
   ================================================ */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    border: 1px solid rgba(99, 102, 241, 0.2);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #1a1a1a;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.5rem;
    }
}

.section-description {
    font-size: 1rem;
    color: #6b7280;
    max-width: 48rem;
    margin: 0 auto;
    line-height: 1.7;
}

/* ================================================
   Services Section
   ================================================ */
.services-section {
    padding: 5rem 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 1rem;
    padding: 2rem;
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.4);
}

.service-header {
    margin-bottom: 1.5rem;
}

.service-icon {
    width: 4rem;
    height: 4rem;
    border-radius: 0.75rem;
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 25%, #6366f1 50%, #8b5cf6 75%, #a855f7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 1rem;
}

.service-icon svg {
    width: 2rem;
    height: 2rem;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #1a1a1a;
}

.service-description {
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.service-features ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.service-features li {
    display: flex;
    align-items: center;
    font-size: 0.875rem;
    color: #4b5563;
}

.checkmark {
    color: #10b981;
    font-weight: 600;
    margin-right: 0.5rem;
    flex-shrink: 0;
}

/* ================================================
   Trust Badges Section
   ================================================ */
.trust-section {
    padding: 2.5rem 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-top: 1px solid #e2e8f0;
}

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

.trust-text {
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.trust-badges {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .trust-badges {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
        padding: 0;
    }
}

@media (min-width: 1024px) {
    .trust-badges {
        grid-template-columns: repeat(6, 1fr);
        gap: 2.5rem;
    }
}

.trust-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem 1rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 0.75rem;
    transition: all 0.3s ease;
    border: 1px solid rgba(99, 102, 241, 0.1);
    backdrop-filter: blur(10px);
}

.trust-badge:hover {
    transform: translateY(-5px);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.15);
}

.badge-icon {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.badge-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.badge-text strong {
    font-size: 0.8rem;
    font-weight: 600;
    color: #1e293b;
}

.badge-text span {
    font-size: 0.7rem;
    color: #64748b;
}

/* ================================================
   Education Section
   ================================================ */
.education-section {
    padding: 4rem 0;
    background: 
        linear-gradient(135deg, #000000 0%, #0a0a0a 100%),
        linear-gradient(90deg, rgba(255, 255, 255, 1) 2px, transparent 2px),
        linear-gradient(rgba(255, 255, 255, 1) 2px, transparent 2px);
    background-size: 100% 100%, 30px 30px, 30px 30px;
    color: white;
    position: relative;
    overflow: hidden;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.education-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(90deg, rgba(255, 255, 255, 0.3) 1px, transparent 1px),
        linear-gradient(rgba(255, 255, 255, 0.3) 1px, transparent 1px);
    background-size: 30px 30px;
    animation: pulse 4s ease-in-out infinite;
}

.education-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
    position: relative;
    z-index: 2;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .education-content {
        gap: 3rem;
        padding: 0;
    }
}

@media (min-width: 1024px) {
    .education-content {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.education-text .section-badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.education-text .section-title {
    color: white;
}

.education-text .section-description {
    color: rgba(255, 255, 255, 0.9);
}

.education-features {
    margin: 2rem 0;
}

.education-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: flex-start;
}

.education-icon {
    width: 3rem;
    height: 3rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.education-icon svg {
    width: 1.5rem;
    height: 1.5rem;
    color: white;
}

.education-content-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: white;
}

.education-content-item p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: 0;
}

.education-cta {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.education-cta .btn-outline {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.education-cta .btn-outline:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.education-image {
    position: relative;
}

.education-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .education-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .education-stats {
        grid-template-columns: 1fr;
    }
}

.stat-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.stat-card .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    background: none;
    -webkit-text-fill-color: white;
    margin-bottom: 0.5rem;
}

.stat-card .stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* Featured Service Card */
.featured-service {
    border: 2px solid #667eea;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(255, 255, 255, 0.9) 100%);
}

.featured-service::before {
    content: "POPULAR";
    position: absolute;
    top: 1rem;
    right: -2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.25rem 3rem;
    transform: rotate(45deg);
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 3;
}

.featured-service:hover {
    border-color: #667eea;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.2);
}

@media (max-width: 768px) {
    .education-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .education-cta {
        flex-direction: column;
    }
    
    .education-stats {
        grid-template-columns: 1fr;
    }
}

/* ================================================
   Testimonials Section
   ================================================ */
.testimonials-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem;
    }
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(99, 102, 241, 0.1);
    position: relative;
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.client-testimonial {
    border-left: 4px solid #10b981;
}

.student-testimonial {
    border-left: 4px solid #6366f1;
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.testimonial-avatar {
    position: relative;
}

.avatar-image {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.testimonial-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: #1a1a1a;
}

.testimonial-info p {
    color: #6b7280;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.testimonial-rating {
    font-size: 0.875rem;
}

.testimonial-badge {
    position: absolute;
    top: -0.5rem;
    right: 0;
    background: #10b981;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.student-badge {
    background: #6366f1;
}

.testimonial-content {
    font-style: italic;
    font-size: 1rem;
    line-height: 1.6;
    color: #374151;
    margin-bottom: 1.5rem;
    position: relative;
}

.testimonial-content::before {
    content: '"';
    font-size: 4rem;
    color: rgba(99, 102, 241, 0.2);
    position: absolute;
    top: -1rem;
    left: -0.5rem;
    font-family: serif;
}

.testimonial-results {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.result-metric {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(16, 185, 129, 0.1));
    color: #6366f1;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.testimonials-cta {
    text-align: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: 1.5rem;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.cta-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1.5rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ================================================
   Pricing Section
   ================================================ */
.pricing-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
    color: white;
    position: relative;
}

.pricing-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    animation: pulse 6s ease-in-out infinite;
}

.pricing-section .section-badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.pricing-section .section-title {
    color: white;
}

.pricing-section .section-description {
    color: rgba(255, 255, 255, 0.9);
}

.pricing-toggle {
    display: flex;
    justify-content: center;
    margin-bottom: 3rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem;
    border-radius: 0.75rem;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
}

.toggle-btn {
    flex: 1;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.toggle-btn.active {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    backdrop-filter: blur(10px);
}

.pricing-grid {
    display: none;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.pricing-grid.active {
    display: grid;
}

@media (min-width: 768px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pricing-card {
    background: rgba(255, 255, 255, 0.95);
    color: #1a1a1a;
    border-radius: 1.5rem;
    padding: 2.5rem 2rem;
    position: relative;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.pricing-card.featured {
    border: 2px solid #6366f1;
    transform: scale(1.05);
    background: rgba(255, 255, 255, 1);
}

.popular-badge {
    position: absolute;
    top: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pricing-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
}

.pricing-subtitle {
    color: #6b7280;
    font-size: 0.875rem;
}

.pricing-price {
    text-align: center;
    margin-bottom: 2rem;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-period {
    color: #6b7280;
    font-size: 0.875rem;
    margin-left: 0.5rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #e5e7eb;
    font-size: 0.875rem;
    color: #4b5563;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-guarantee {
    display: flex;
    justify-content: center;
}

.guarantee-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1rem;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: 500px;
}

.guarantee-icon {
    font-size: 2rem;
}

.guarantee-content h4 {
    color: white;
    margin-bottom: 0.5rem;
}

.guarantee-content p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
    font-size: 0.875rem;
}

/* ================================================
   About Section
   ================================================ */
.about-section {
    padding: 5rem 0;
    background: #f8fafc;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .about-content {
        gap: 3rem;
        padding: 0;
    }
}

@media (min-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.about-description {
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.feature-icon {
    width: 1.5rem;
    height: 1.5rem;
    color: #6366f1;
    flex-shrink: 0;
}

.about-image {
    position: relative;
}

.about-tech-image {
    width: 100%;
    max-width: 400px;
    border-radius: 1rem;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

.about-tech-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
}

.about-tech-image-secondary {
    width: 100%;
    max-width: 400px;
    border-radius: 1rem;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.about-tech-image-secondary:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
}

.about-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(99, 102, 241, 0.2), transparent);
    border-radius: 1rem;
}

/* ================================================
   Contact Section
   ================================================ */
.contact-section {
    padding: 5rem 0;
    background-image: 
        linear-gradient(90deg, rgba(59, 130, 246, 0.1) 1px, transparent 1px),
        linear-gradient(rgba(59, 130, 246, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .contact-content {
        gap: 3rem;
        padding: 0;
    }
}

@media (min-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.card-header {
    margin-bottom: 2rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
}

.card-description {
    color: #6b7280;
    line-height: 1.6;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

@media (min-width: 640px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-input,
.form-textarea {
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #1a1a1a;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 25%, #6366f1 50%, #8b5cf6 75%, #a855f7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.contact-details-text {
    flex: 1;
}

.contact-label {
    font-weight: 500;
    color: #1a1a1a;
    margin-bottom: 0.25rem;
}

.contact-value {
    color: #6b7280;
    word-break: break-word;
    line-height: 1.4;
}

.why-choose-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.why-choose-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.why-choose-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.why-choose-list .checkmark {
    color: #10b981;
    font-weight: 600;
    margin-top: 0.125rem;
    flex-shrink: 0;
}

/* ================================================
   Footer
   ================================================ */
.footer {
    background: #0f172a;
    color: white;
    padding: 3rem 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(4, 1fr);
        padding: 0;
    }
}

.footer-section {
    display: flex;
    flex-direction: column;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo {
    width: 2rem;
    height: 2rem;
    border-radius: 0.25rem;
    object-fit: cover;
}

.footer-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-description {
    color: #9ca3af;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-heading {
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: #9ca3af;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #374151;
    margin-top: 2rem;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
}

/* ================================================
   Floating WhatsApp Button
   ================================================ */
.whatsapp-float {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #25D366;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.whatsapp-float:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.2);
}

.whatsapp-float svg {
    width: 28px;
    height: 28px;
}

/* ================================================
   Utility Classes
   ================================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }

.hidden { display: none; }
.block { display: block; }
.flex { display: flex; }
.grid { display: grid; }

/* ================================================
   Responsive Design
   ================================================ */
@media (max-width: 767px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.875rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 639px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

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

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Smooth transitions for interactive elements */
.service-card,
.btn,
.nav-link,
.footer-links a {
    transition: all 0.3s ease;
}

/* Focus states for accessibility */
.btn:focus,
.form-input:focus,
.form-textarea:focus,
.nav-link:focus {
    outline: 2px solid #6366f1;
    outline-offset: 2px;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* ================================================
   Print Styles
   ================================================ */
@media print {
    .navbar,
    .mobile-menu,
    .hero-buttons,
    .btn {
        display: none;
    }
    
    .hero-section {
        background: white;
        color: black;
    }
    
    .gradient-text {
        color: #6366f1 !important;
        -webkit-text-fill-color: #6366f1 !important;
    }
}