/* ===== CSS RESET & GLOBAL VARIABLES ===== */
:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --text-light: #7f8c8d;
    --white: #fff;
    --black: #000;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
}

h1, h2, h3, h4 {
    margin-bottom: 20px;
    line-height: 1.2;
}

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

p {
    margin-bottom: 15px;
}

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

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

/* ===== BUTTON STYLES ===== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

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

.btn.primary:hover {
    background-color: #2980b9;
    transform: translateY(-3px);
}

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

.btn.secondary:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.btn.small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* ===== SECTION TITLE ===== */
.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
}

/* ===== HEADER & NAVIGATION ===== */
header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: var(--dark-color);
    font-weight: 600;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger .line {
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    margin: 5px;
    transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    padding-right: 40px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content h1 span {
    color: var(--primary-color);
}

.hero-content h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text-light);
    font-weight: 400;
    min-height: 60px;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--text-light);
    max-width: 500px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
}

.hero-image {
    flex: 1;
    text-align: center;
}

.profile-img {
    width: 850px;
    height: 550px;
    max-width: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid var(--primary-color);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.profile-img:hover {
    transform: scale(1.05);
}

/* Demos Section Styles */
.demos-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.demos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.demo-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

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

.demo-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.demo-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.demo-card:hover .demo-image img {
    transform: scale(1.05);
}

.demo-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(108, 99, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.demo-card:hover .demo-overlay {
    opacity: 1;
}

.demo-links {
    display: flex;
    gap: 15px;
    flex-direction: column;
}

.demo-btn {
    padding: 12px 24px;
    background: white;
    color: #6c63ff;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}

.demo-btn:hover {
    background: #f8fafc;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.demo-content {
    padding: 25px;
}

.demo-content h3 {
    color: #1e293b;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.demo-content p {
    color: #64748b;
    margin-bottom: 20px;
    line-height: 1.6;
}

.demo-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tech-tag {
    background: #e2e8f0;
    color: #475569;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.demo-status {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #e2e8f0;
}

.status-badge {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-live {
    background: #dcfce7;
    color: #166534;
}

.status-beta {
    background: #fef3c7;
    color: #92400e;
}

.status-dev {
    background: #dbeafe;
    color: #1e40af;
}

.demo-date {
    color: #94a3b8;
    font-size: 0.8rem;
}

/* Demo CTA Section */
.demo-cta {
    text-align: center;
    margin-top: 60px;
    padding: 40px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.demo-cta h3 {
    color: #1e293b;
    margin-bottom: 15px;
}

.demo-cta p {
    color: #64748b;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Responsive Design */
@media (max-width: 768px) {
    .demos-grid {
        grid-template-columns: 1fr;
    }
    
    .demo-card {
        margin-bottom: 20px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 200px;
    }
}

/* ===== SPONSORS SECTION ===== */
.sponsors {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.sponsors-subtitle {
    text-align: center;
    color: #64748b;
    margin-bottom: 50px;
    font-size: 1.1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Marquee Styles */
.marquee-container {
    width: 100%;
    overflow: hidden;
    position: relative;
    margin: 40px 0;
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.marquee-track {
    display: flex;
    animation: marquee 40s linear infinite;
    width: max-content;
}

.sponsor-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px 30px;
    margin: 0 15px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    min-width: 180px;
    height: 140px;
}

.sponsor-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.sponsor-logo {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    padding: 10px;
}

.sponsor-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.sponsor-item:hover .sponsor-logo img {
    filter: grayscale(0%);
}

.sponsor-name {
    font-weight: 600;
    color: #2d3748;
    text-align: center;
    font-size: 0.9rem;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.marquee-container:hover .marquee-track {
    animation-play-state: paused;
}

/* Static Sponsors Grid */
.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin: 60px 0 40px;
}

.sponsor-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border-top: 4px solid #6c63ff;
    display: flex;
    flex-direction: column;
}

.sponsor-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.sponsor-card-icon {
    width: 120px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    padding: 15px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.sponsor-card-icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.sponsor-card h3 {
    color: #2d3748;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.sponsor-card p {
    color: #64748b;
    margin-bottom: 20px;
    line-height: 1.6;
    flex-grow: 1;
}

.sponsor-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.sponsor-tag {
    background: #e2e8f0;
    color: #4a5568;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.sponsor-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #64748b;
    font-size: 0.9rem;
}

/* Educational Institutions Section */
.institutions-section {
    margin: 60px 0 40px;
    padding: 40px 0;
    border-top: 1px solid #e2e8f0;
}

.institutions-title {
    text-align: center;
    color: #2d3748;
    margin-bottom: 40px;
    font-size: 1.5rem;
}

.institutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.institution-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border-left: 4px solid #10b981;
}

.institution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.institution-logo {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #10b981, #34d399);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: white;
}

.institution-card h4 {
    color: #2d3748;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.institution-card p {
    color: #64748b;
    margin-bottom: 20px;
    line-height: 1.6;
}

.institution-details {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.institution-detail {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #64748b;
    font-size: 0.9rem;
}

.sponsors-cta {
    text-align: center;
    padding: 40px 0 20px;
}

.sponsors-cta p {
    color: #64748b;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

/* ===== ABOUT SECTION ===== */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-image {
    flex: 1;
}

.about-image img {
    border-radius: 10px;
    box-shadow: var(--box-shadow);
}

.about-text {
    flex: 1;
}

.social-links {
    margin-top: 20px;
    display: flex;
    gap: 15px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--light-color);
    color: var(--dark-color);
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

/* ===== SKILLS SECTION ===== */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.skill-category {
    background: var(--white);
    flex: 1;
    min-width: 300px;
    background-color: var(--light-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-10px);
}

.skill-item {
    margin-bottom: 20px;
}

.skill-item span {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.skill-bar {
    width: 100%;
    height: 10px;
    background-color: #ddd;
    border-radius: 5px;
    overflow: hidden;
}

.skill-level {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 5px;
}

/* ===== EDUCATION SECTION ===== */
.education-section {
    padding: 100px 0;
    background: linear-gradient(180deg, #f9fafb 0%, #eef3f7 100%);
}

.education-section .section-title {
    text-align: center;
    font-size: 2.4rem;
    font-weight: 700;
    color: #222;
    margin-bottom: 20px;
}

.education-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 60px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.education-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto 60px;
}

.education-card {
    background: #fff;
    padding: 30px;
    border-radius: 14px;
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
    position: relative;
    overflow: hidden;
}

.education-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #58a6ff);
}

.education-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.education-card .edu-icon {
    background: var(--primary-color);
    color: #fff;
    font-size: 24px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.education-card:hover .edu-icon {
    transform: scale(1.1);
    background: linear-gradient(135deg, var(--primary-color), #58a6ff);
}

.edu-info h3 {
    font-size: 1.4rem;
    color: #111;
    margin-bottom: 12px;
    font-weight: 700;
}

.edu-info p {
    font-size: 0.95rem;
    color: #444;
    line-height: 1.6;
    margin-bottom: 8px;
}

.edu-info strong {
    color: #222;
    font-weight: 600;
}

.edu-social-links {
    margin-top: 20px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.edu-social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--light-color);
    color: var(--dark-color);
    transition: var(--transition);
    font-size: 0.9rem;
}

.edu-social-links a:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

/* Timeline Styles */
.timeline-toggle {
    margin: 20px 0;
    text-align: center;
}

.timeline-btn {
    background: linear-gradient(135deg, var(--primary-color), #58a6ff);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 auto;
}

.timeline-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.timeline-btn i {
    transition: transform 0.3s ease;
}

.timeline-btn.active i {
    transform: rotate(180deg);
}

.timeline-container {
    margin-top: 20px;
    transition: all 0.3s ease;
}

.timeline-container.show {
    display: block;
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.timeline {
    position: relative;
    margin-left: 30px;
    padding-left: 30px;
    border-left: 3px solid var(--primary-color);
}

.timeline-section {
    margin-bottom: 30px;
}

.timeline-section .section-title {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 20px;
    padding: 10px 15px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    text-align: left;
    font-weight: 600;
}

.timeline-item {
    position: relative;
    margin-bottom: 25px;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateX(-20px);
    animation: slideInRight 0.5s ease forwards;
}

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

.timeline-dot {
    position: absolute;
    left: -36px;
    top: 15px;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
    z-index: 2;
}

.timeline-dot.completed {
    background: #28a745;
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.2);
}

.timeline-dot.pending {
    background: #ffc107;
    box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.2);
}

.timeline-content {
    position: relative;
    background: #f8f9fa;
    padding: 18px 20px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
    cursor: pointer;
}

.timeline-content.completed {
    border-left-color: #28a745;
    background: linear-gradient(135deg, #f8fff9, #e8f5e8);
}

.timeline-content.pending {
    border-left-color: #ffc107;
    background: linear-gradient(135deg, #fffdf0, #fff9e6);
}

.timeline-content:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.12);
}

.progress-summary {
    background: #f8fafc;
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    border: 1px solid #e2e8f0;
}

.progress-summary h4 {
    margin-bottom: 10px;
    color: #1e293b;
    font-size: 1.1rem;
}

.progress-bar-container {
    background: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
    height: 8px;
    margin-bottom: 8px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #28a745, #20c997);
    border-radius: 10px;
    transition: width 0.5s ease;
}

.progress-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: #666;
}

.topic-progress {
    margin-top: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.progress-bar-container.small {
    height: 6px;
    flex: 1;
    background: #fffbeb;
    border-radius: 3px;
    overflow: hidden;
}

.progress-text {
    font-size: 0.75rem;
    color: #6b7280;
    font-weight: 500;
    min-width: 80px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 8px;
    margin-top: 15px;
}

.skill-tag {
    background: #e0e7ff;
    color: #4f46e5;
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background: #4f46e5;
    color: white;
    transform: translateY(-2px);
}

.certification-details {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.cert-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.cert-description {
    opacity: 0.9;
    line-height: 1.5;
}

/* ===== CERTIFICATIONS SECTION ===== */
.certifications-section {
    margin: 60px 0 40px;
    text-align: center;
    padding: 40px 0;
}

.certifications-section h3 {
    font-size: 1.8rem;
    color: var(--dark-color);
    margin-bottom: 40px;
    font-weight: 600;
    position: relative;
}

.certifications-section h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.certification-card {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    border-left: 4px solid #6c63ff;
    position: relative;
    overflow: hidden;
}

.certification-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.cert-icon {
    font-size: 2.5rem;
    color: #6c63ff;
    margin-bottom: 15px;
}

.certification-card h4 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.certification-card p {
    margin-bottom: 10px;
    color: #555;
    line-height: 1.5;
}

.cert-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 15px 0;
}

.cert-skills .skill-tag {
    background: #f0f0ff;
    color: #6c63ff;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status-completed {
    color: #28a745;
    font-weight: 600;
}

.status-ongoing {
    color: #ffc107;
    font-weight: 600;
}

/* ===== PROJECTS SECTION ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-10px);
}

.project-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-info {
    padding: 20px;
}

.project-info h3 {
    color: var(--primary-color);
}

.project-links {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.view-more {
    text-align: center;
    margin-top: 40px;
}

/* ===== CONTACT SECTION ===== */
.contact-content {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.contact-social {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.contact-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--light-color);
    color: var(--dark-color);
    transition: var(--transition);
}

.contact-social a:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.contact-form {
    flex: 1;
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

/* ===== FOOTER ===== */
.footer {
    background-color: #ffffff;
    color: #000;
    padding: 60px 0 20px;
    font-family: 'Poppins', sans-serif;
    box-shadow: #000;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-brand h2 {
    font-size: 28px;
    color: #58a6ff;
    margin-bottom: 10px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.6;
    max-width: 250px;
}

.footer-links h3,
.footer-social h3 {
    font-size: 16px;
    margin-bottom: 15px;
    color: #000;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: #000;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: #000;
}

.footer-social .social-icons a {
    color: #000;
    margin-right: 15px;
    font-size: 18px;
    transition: color 0.3s ease, transform 0.3s ease;
}

.footer-social .social-icons a:hover {
    color: #58a6ff;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #30363d;
    font-size: 14px;
    color: #000;
}

/* ===== SOCIAL LINKS SECTION ===== */
.education-social-section {
    text-align: center;
    margin-top: 50px;
    padding: 40px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.05);
}

.education-social-section h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.social-description {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.education-social-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.social-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--light-color);
    color: var(--dark-color);
    border-radius: 8px;
    transition: var(--transition);
    text-decoration: none;
    font-weight: 500;
    border: 2px solid transparent;
}

.social-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
    border-color: var(--primary-color);
}

.social-btn i {
    font-size: 1.1rem;
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-5px);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        padding-right: 0;
        margin-bottom: 40px;
    }

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

    .about-content {
        flex-direction: column;
    }

    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links li {
        margin: 15px 0;
    }

    .hamburger.active .line:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .hamburger.active .line:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .line:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    /* Education Section Mobile */
    .education-wrapper {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .education-card {
        padding: 25px 20px;
    }
    
    .education-section .section-title {
        font-size: 2rem;
    }
    
    .education-subtitle {
        font-size: 1rem;
    }
    
    .timeline {
        margin-left: 20px;
        padding-left: 20px;
    }
    
    .timeline-dot {
        left: -26px;
        width: 14px;
        height: 14px;
    }
    
    .timeline-content {
        padding: 15px;
    }
    
    .timeline-content h3 {
        font-size: 1rem;
    }
    
    .timeline-content p {
        font-size: 0.85rem;
        padding-left: 0;
    }
    
    .timeline-section .section-title {
        font-size: 1rem;
        padding: 8px 12px;
    }
    
    .progress-summary {
        padding: 12px;
    }
    
    .timeline-btn {
        width: 100%;
        justify-content: center;
    }

    /* Sponsors Section Mobile */
    .sponsors-grid {
        grid-template-columns: 1fr;
    }
    
    .sponsor-item {
        min-width: 140px;
        padding: 15px 20px;
        height: 120px;
    }
    
    .sponsor-logo {
        width: 60px;
        height: 60px;
    }
    
    .sponsor-name {
        font-size: 0.8rem;
    }
    
    .sponsor-card-icon {
        width: 100px;
        height: 70px;
    }
    
    .institutions-grid {
        grid-template-columns: 1fr;
    }

    /* Footer Mobile */
    .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }
    .footer-links ul li {
        display: inline-block;
        margin: 0 10px 10px;
    }
    .footer-social .social-icons a {
        margin: 0 10px;
    }
}

@media (max-width: 480px) {
    section {
        padding: 60px 0;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .btn {
        width: 100%;
    }

    .project-links {
        flex-direction: column;
    }

    .project-links .btn {
        width: 100%;
    }

    /* Education Section Mobile Small */
    .education-wrapper {
        grid-template-columns: 1fr;
    }
    
    .education-card {
        text-align: center;
        padding: 20px 15px;
    }
    
    .education-card .edu-icon {
        margin: 0 auto 20px auto;
    }
    
    .edu-social-links {
        justify-content: center;
    }
    
    .timeline {
        margin-left: 15px;
        padding-left: 15px;
    }
    
    .timeline-dot {
        left: -21px;
        width: 12px;
        height: 12px;
    }
    
    .timeline-content {
        padding: 12px;
    }
    
    .timeline-content h3 {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .timeline-content h3::before {
        font-size: 0.8rem;
    }
    
    .timeline-btn {
        width: 100%;
        justify-content: center;
    }

    /* Sponsors Section Mobile Small */
    .sponsors {
        padding: 60px 0;
    }
    
    .marquee-container {
        margin: 20px 0;
    }
    
    .sponsor-item {
        min-width: 120px;
        padding: 12px 15px;
        margin: 0 10px;
        height: 110px;
    }
    
    .sponsor-logo {
        width: 50px;
        height: 50px;
    }

    /* Social Section Mobile */
    .education-social-section {
        padding: 30px 15px;
    }
    
    .education-social-links {
        flex-direction: column;
        align-items: center;
    }
    
    .social-btn {
        width: 250px;
        justify-content: flex-start;
    }
    
    .social-description {
        font-size: 0.9rem;
        padding: 0 10px;
    }
}

/* Pricing Section Styles */
.pricing-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.package-categories {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.category-btn {
    padding: 12px 30px;
    border: 2px solid #3498db;
    background: transparent;
    color: #3498db;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-btn.active,
.category-btn:hover {
    background: #3498db;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(108, 99, 255, 0.3);
}

.package-category {
    display: none;
    animation: fadeIn 0.5s ease;
}

.package-category.active {
    display: block;
}

.category-title {
    text-align: center;
    font-size: 2.2rem;
    color: #2a2a2a;
    margin-bottom: 10px;
}

.category-description {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.package-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    border: 1px solid #e0e0e0;
}

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

.package-card.popular {
    border: 2px solid #3498db;
    transform: scale(1.05);
}

.package-card.popular:hover {
    transform: scale(1.05) translateY(-10px);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #3498db;
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.package-header {
    text-align: center;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.package-header h4 {
    font-size: 1.5rem;
    color: #2a2a2a;
    margin-bottom: 10px;
}

.package-price {
    font-size: 1.8rem;
    font-weight: 700;
    color: #3498db;
}

.package-description {
    margin-bottom: 25px;
    text-align: center;
}

.package-description p {
    color: #666;
    line-height: 1.6;
}

.package-features {
    margin-bottom: 30px;
}

.package-features h5 {
    color: #2a2a2a;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.package-features ul {
    list-style: none;
    padding: 0;
}

.package-features li {
    padding: 8px 0;
    color: #555;
    position: relative;
    padding-left: 25px;
}

.package-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
}

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

.package-btn {
    width: 100%;
    padding: 12px;
    font-size: 1rem;
}

.custom-solution-cta {
    background: white;
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 2px dashed #3498db;
}

.cta-content h3 {
    color: #2a2a2a;
    margin-bottom: 15px;
    font-size: 1.8rem;
}

.cta-content p {
    color: #666;
    margin-bottom: 25px;
    font-size: 1.1rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: slideIn 0.3s ease;
}

.close {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #999;
}

.close:hover {
    color: #333;
}

.modal-content h3 {
    color: #2a2a2a;
    margin-bottom: 20px;
    text-align: center;
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .package-categories {
        flex-direction: column;
        align-items: center;
    }
    
    .category-btn {
        width: 200px;
    }
    
    .packages-grid {
        grid-template-columns: 1fr;
    }
    
    .package-card.popular {
        transform: none;
    }
    
    .package-card.popular:hover {
        transform: translateY(-10px);
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
}

@media (max-width: 480px) {
    .package-card {
        padding: 20px;
    }
    
    .category-title {
        font-size: 1.8rem;
    }
    
    .package-price {
        font-size: 1.5rem;
    }
}

/* Additional Services Styles */
.additional-services {
    margin-top: 60px;
    padding: 40px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.services-title {
    text-align: center;
    font-size: 1.8rem;
    color: #2a2a2a;
    margin-bottom: 30px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.service-item {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: #3498db;
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.service-item h5 {
    color: #2a2a2a;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.service-item p {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.5;
}

.service-price {
    font-size: 1.1rem;
    font-weight: 700;
    color: #3498db;
    margin-bottom: 15px;
}

.service-btn {
    width: 100%;
    padding: 10px;
    font-size: 0.9rem;
}

/* Responsive Design for Services */
@media (max-width: 768px) {
    .additional-services {
        padding: 25px;
        margin-top: 40px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-item {
        padding: 20px;
    }
}


.image-container {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
}

.image-container img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: opacity 0.3s ease;
}

.image-container img:not(.loaded) {
    opacity: 0;
}

.image-loader {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
}

.image-loader .spinner.small {
    width: 20px;
    height: 20px;
}

.preview-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #28a745;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 4px;
}

.preview-badge.building {
    background: #ffc107;
    color: #000;
}

.iframe-container {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 8px;
}

.iframe-container iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: white;
}

.iframe-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.iframe-container:hover .iframe-overlay {
    opacity: 1;
}

.preview-btn {
    background: #6c757d !important;
}

.preview-btn:hover {
    background: #5a6268 !important;
}

.demo-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.status-ready {
    background: #28a745;
}

.status-building {
    background: #ffc107;
    color: #000;
}

.status-error {
    background: #dc3545;
}

.status-unknown {
    background: #6c757d;
}