styles.css

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    width: 100%;
    margin: 0 auto;
    padding: 0 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a1a;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-logo i {
    color: #6366f1;
    font-size: 1.8rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: logoGlow 3s ease-in-out infinite alternate;
    filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.3));
    transition: all 0.3s ease;
}

.nav-logo:hover i {
    transform: rotateY(360deg);
    filter: drop-shadow(0 4px 8px rgba(99, 102, 241, 0.5));
}

@keyframes logoGlow {
    0% {
        filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.3));
    }
    100% {
        filter: drop-shadow(0 4px 12px rgba(139, 92, 246, 0.6));
    }
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #6366f1;
    transition: width 0.3s ease;
}

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

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: 4px;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 20px;
    padding: 4px;
    margin-right: 1rem;
}

.lang-btn {
    background: none;
    border: none;
    color: #64748b;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background: rgba(99, 102, 241, 0.08);
    color: #6366f1;
}

.lang-btn.active {
    background: rgba(99, 102, 241, 0.15);
    color: #6366f1;
}

.nav-cta {
    background: #6366f1;
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: #5855eb;
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f1f5f9 100%);
    padding-top: 70px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    opacity: 0.6;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    top: -20%;
    left: -15%;
    animation: float 25s ease-in-out infinite;
}

.orb-2 {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    top: 20%;
    right: -10%;
    animation: float 30s ease-in-out infinite reverse;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    bottom: -20%;
    left: 50%;
    animation: float 35s ease-in-out infinite;
}

.particle-system {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 50%;
    animation: particles 25s linear infinite;
    opacity: 0.7;
}

.particle:nth-child(1) { left: 5%; animation-delay: 0s; }
.particle:nth-child(2) { left: 15%; animation-delay: 2s; }
.particle:nth-child(3) { left: 25%; animation-delay: 4s; }
.particle:nth-child(4) { left: 35%; animation-delay: 6s; }
.particle:nth-child(5) { left: 45%; animation-delay: 8s; }
.particle:nth-child(6) { left: 55%; animation-delay: 10s; }
.particle:nth-child(7) { left: 65%; animation-delay: 12s; }
.particle:nth-child(8) { left: 75%; animation-delay: 14s; }
.particle:nth-child(9) { left: 85%; animation-delay: 16s; }
.particle:nth-child(10) { left: 95%; animation-delay: 18s; }
.particle:nth-child(11) { left: 10%; animation-delay: 3s; }
.particle:nth-child(12) { left: 30%; animation-delay: 7s; }
.particle:nth-child(13) { left: 50%; animation-delay: 11s; }
.particle:nth-child(14) { left: 70%; animation-delay: 13s; }
.particle:nth-child(15) { left: 90%; animation-delay: 17s; }

@keyframes particles {
    0% { 
        top: 110%;
        opacity: 0;
        transform: scale(0.5);
    }
    10% { opacity: 0.7; }
    90% { opacity: 0.7; }
    100% { 
        top: -20%;
        opacity: 0;
        transform: scale(1.2);
    }
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(15px, -15px) rotate(2deg); }
    50% { transform: translate(-10px, -25px) rotate(-1deg); }
    75% { transform: translate(-15px, -10px) rotate(1deg); }
}

/* Bubbles System */
.bubbles-system {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.bubble {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.3));
    backdrop-filter: blur(2px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: bubbleFloat infinite ease-in-out;
}

.bubble-1 {
    width: 60px;
    height: 60px;
    left: 10%;
    animation-duration: 8s;
    animation-delay: 0s;
}

.bubble-2 {
    width: 40px;
    height: 40px;
    left: 20%;
    animation-duration: 10s;
    animation-delay: 1s;
}

.bubble-3 {
    width: 80px;
    height: 80px;
    left: 30%;
    animation-duration: 12s;
    animation-delay: 2s;
}

.bubble-4 {
    width: 35px;
    height: 35px;
    left: 40%;
    animation-duration: 9s;
    animation-delay: 3s;
}

.bubble-5 {
    width: 55px;
    height: 55px;
    left: 50%;
    animation-duration: 11s;
    animation-delay: 4s;
}

.bubble-6 {
    width: 70px;
    height: 70px;
    left: 60%;
    animation-duration: 13s;
    animation-delay: 5s;
}

.bubble-7 {
    width: 45px;
    height: 45px;
    left: 70%;
    animation-duration: 8.5s;
    animation-delay: 6s;
}

.bubble-8 {
    width: 65px;
    height: 65px;
    left: 80%;
    animation-duration: 10.5s;
    animation-delay: 7s;
}

.bubble-9 {
    width: 30px;
    height: 30px;
    left: 90%;
    animation-duration: 9.5s;
    animation-delay: 8s;
}

.bubble-10 {
    width: 50px;
    height: 50px;
    left: 15%;
    animation-duration: 11.5s;
    animation-delay: 2.5s;
}

.bubble-11 {
    width: 40px;
    height: 40px;
    left: 75%;
    animation-duration: 12.5s;
    animation-delay: 4.5s;
}

.bubble-12 {
    width: 55px;
    height: 55px;
    left: 85%;
    animation-duration: 10.8s;
    animation-delay: 6.5s;
}

@keyframes bubbleFloat {
    0% {
        top: 100%;
        opacity: 0;
        transform: translateX(0) scale(0.5);
    }
    10% {
        opacity: 0.8;
    }
    50% {
        transform: translateX(30px) scale(1);
    }
    90% {
        opacity: 0.8;
    }
    100% {
        top: -10%;
        opacity: 0;
        transform: translateX(-20px) scale(1.2);
    }
}

/* Floating Shapes */
.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.shape {
    position: absolute;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(59, 130, 246, 0.2));
    backdrop-filter: blur(3px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: shapeFloat infinite ease-in-out;
}

.shape-1 {
    width: 25px;
    height: 25px;
    border-radius: 4px;
    left: 8%;
    animation-duration: 15s;
    animation-delay: 0s;
    transform: rotate(45deg);
}

.shape-2 {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    left: 25%;
    animation-duration: 18s;
    animation-delay: 3s;
}

.shape-3 {
    width: 30px;
    height: 30px;
    border-radius: 6px;
    left: 45%;
    animation-duration: 20s;
    animation-delay: 6s;
    transform: rotate(-30deg);
}

.shape-4 {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    left: 65%;
    animation-duration: 16s;
    animation-delay: 9s;
}

.shape-5 {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    left: 80%;
    animation-duration: 22s;
    animation-delay: 12s;
    transform: rotate(60deg);
}

.shape-6 {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    left: 95%;
    animation-duration: 19s;
    animation-delay: 15s;
}

@keyframes shapeFloat {
    0% {
        top: 110%;
        opacity: 0;
        transform: translateX(0) rotate(0deg) scale(0.3);
    }
    15% {
        opacity: 0.6;
    }
    50% {
        transform: translateX(50px) rotate(180deg) scale(1);
    }
    85% {
        opacity: 0.6;
    }
    100% {
        top: -15%;
        opacity: 0;
        transform: translateX(-30px) rotate(360deg) scale(1.5);
    }
}

.hero-container {
    position: relative;
    z-index: 10;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 2rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    padding: 10px 24px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2rem;
    border: none;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 3rem;
    line-height: 1.7;
    font-weight: 400;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.btn-primary {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    padding: 16px 32px;
    border-radius: 16px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-secondary {
    background: transparent;
    color: #4b5563;
    padding: 16px 32px;
    border-radius: 16px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-secondary:hover {
    background: #f9fafb;
    border-color: #6366f1;
    color: #6366f1;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    padding: 1.2rem 1rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    min-width: 120px;
}

.stat:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.stat-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    color: #6366f1;
    margin-bottom: 0.3rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: #64748b;
    font-weight: 500;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* About Section */
.about {
    padding: 6rem 0;
    background: white;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.about-card {
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.card-icon i {
    font-size: 1.5rem;
    color: white;
}

.about-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.about-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Projects Section */
.projects {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.project-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.8) 100%);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid rgba(226, 232, 240, 0.3);
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.9) 100%);
}

.project-status {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

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

.status-badge.active {
    background: #22c55e;
    color: white;
}

.status-badge.planning {
    background: #f59e0b;
    color: white;
}

.project-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.project-icon i {
    font-size: 1.5rem;
    color: white;
}

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

.project-description {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.tag {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: #6366f1;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #6366f1;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.project-link:hover {
    color: #5855eb;
}

.project-link.disabled {
    color: #64748b;
    cursor: not-allowed;
}

/* Research Section */
.research {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.research-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.research-area {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.8) 100%);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    border: 1px solid rgba(226, 232, 240, 0.3);
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.research-area:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.9) 100%);
}

.area-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.area-icon i {
    font-size: 1.5rem;
    color: white;
}

.research-area h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.research-area p {
    color: #64748b;
    line-height: 1.6;
}

/* Team Section */
.team {
    padding: 6rem 0;
    background: white;
}

.team-info {
    max-width: 800px;
    margin: 0 auto;
}

.join-team {
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.9) 0%, rgba(241, 245, 249, 0.8) 100%);
    padding: 3rem;
    border-radius: 16px;
    text-align: center;
    border: 1px solid rgba(226, 232, 240, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.join-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
}

.join-icon i {
    font-size: 2rem;
    color: white;
}

.join-team h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.join-team p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 2rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    color: #1a1a1a;
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(226, 232, 240, 0.5);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

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

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.footer-logo:hover {
    transform: scale(1.02);
}

.footer-logo i {
    color: #6366f1;
    font-size: 1.8rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.3));
    transition: all 0.3s ease;
}

.footer-logo:hover i {
    transform: rotateX(360deg);
    filter: drop-shadow(0 4px 8px rgba(99, 102, 241, 0.5));
}

.footer-description {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.social-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #64748b;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #6366f1;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(226, 232, 240, 0.5);
    text-align: center;
    color: #64748b;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: row;
        gap: 1.5rem;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .research-areas {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .container {
        padding: 0 1rem;
    }
}

/* Tablet responsive design */
@media (max-width: 992px) and (min-width: 769px) {
    .footer-links {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-menu {
        display: none;
    }
}