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

body {
    font-family: 'Arial', sans-serif;
    color: white;
    overflow-x: hidden;
    position: relative;
}

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

/* Background Effects */
.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 25%, #0f3460 50%, #533483 75%, #7209b7 100%);
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.7; }
    50% { transform: translateY(-20px) rotate(180deg); opacity: 1; }
}

/* Header */
.header {
    padding: 20px 0;
    position: relative;
    z-index: 100;
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-circle {
    width: 50px;
    height: 50px;
    /* background: linear-gradient(45deg, #ff6b35, #f7931e); */
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.logo-circle img {
    width: 30px;
    height: 30px;
}

.logo-text h1 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 2px;
}

.logo-text p {
    font-size: 12px;
    opacity: 0.8;
}

.register-btn {
    background: linear-gradient(45deg, #ff6b35, #f7931e);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.register-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

/* Hero Section */
.hero {
    padding: 60px 0;
    text-align: center;
}

.institution-banner {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}



.institution-logo img {
    max-width: 460px;
    /* height: auto; */
    margin-bottom: 20px;
}

.institution-info h2 {
    font-size: 28px;
    margin-bottom: 10px;
    font-weight: bold;
}

.institution-info p {
    font-size: 16px;
    opacity: 0.9;
}

.main-title {
    margin: 60px 0;
}

.gradient-text {
    font-size: 80px;
    font-weight: bold;
    background: linear-gradient(45deg, #4facfe 0%, #00f2fe 25%, #ff6b35 50%, #f7931e 75%, #ff6b35 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 20px rgba(79, 172, 254, 0.3);
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { filter: hue-rotate(0deg); }
    50% { filter: hue-rotate(30deg); }
}

.central-logo {
    margin: 60px 0;
}

.logo-circle-large {
    width: 200px;
    height: 200px;
    background: linear-gradient(45deg, #1a1a2e, #16213e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    border: 3px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    animation: pulse 2s ease-in-out infinite;
}

.logo-circle img {
  width: 40px;
  height: 40px;
  border-radius: 50%; /* makes it circular */
  object-fit: cover;  /* ensures it doesn’t stretch */
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.logo-circle-large img {
    width: 120px;
    height: 120px;
}

/* Challenge Section */
.challenge-section {
    padding: 80px 0;
    text-align: center;
}

.section-tagline {
    font-size: 36px;
    margin-bottom: 40px;
    opacity: 0.9;
    font-weight: 300;
}

.challenge-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.pill-btn {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
}

.pill-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.cta-btn {
    background: linear-gradient(45deg, #ff6b35, #f7931e);
    color: white;
    border: none;
    padding: 16px 40px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 25px rgba(255, 107, 53, 0.4);
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 107, 53, 0.5);
}

/* Partners Section */
.partners-section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 42px;
    margin-bottom: 20px;
    font-weight: bold;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    opacity: 0.8;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.partner-card{
    padding: 30px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.partner-card2::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
    border-radius: 20px;
}

.pink-theme {
    background: rgba(255, 182, 193, 0.1);
}

.pink-theme::before {
    background: linear-gradient(135deg, #ffb6c1, #ffc0cb);
}

.blue-theme {
    background: rgba(173, 216, 230, 0.1);
}

.blue-theme::before {
    background: linear-gradient(135deg, #add8e6, #87ceeb);
}

.green-theme {
    background: rgba(144, 238, 144, 0.1);
}

.green-theme::before {
    background: linear-gradient(135deg, #90ee90, #98fb98);
}

.partner-card:hover {
    /*transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);*/
}

.partner-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.partner-logo img {
    height: 30px;
}

.partner-badge {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: bold;
}

.partner-description {
    margin-bottom: 25px;
    opacity: 0.9;
    line-height: 1.5;
}

.prize-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.prize-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.prize-item:last-child {
    border-bottom: none;
}

.prize-icon {
    font-size: 18px;
    margin-right: 10px;
}

.prize-text {
    flex: 1;
    font-weight: 500;
}

.prize-amount {
    font-weight: bold;
    font-size: 16px;
}

/* Footer Section */
.footer-section {
    padding: 60px 0 40px;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 60px;
    align-items: start;
}

.committee-section h3 {
    color: #f7931e;
    font-size: 24px;
    margin-bottom: 25px;
    font-weight: bold;
}

.member-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.member-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.member-item::before {
    content: '●';
    color: #f7931e;
    font-size: 12px;
}

.member-name {
    font-weight: 500;
    min-width: 150px;
}

.member-contact {
    opacity: 0.8;
}

.eligibility-card {
    background: linear-gradient(45deg, #ff6b35, #f7931e);
    padding: 25px 35px;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.3);
    min-width: 300px;
}

.eligibility-card h4 {
    font-size: 18px;
    margin-bottom: 10px;
    font-weight: bold;
}

.eligibility-card p {
    font-size: 16px;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .gradient-text {
        font-size: 48px;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .challenge-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .eligibility-card {
        min-width: auto;
    }
    
    .institution-banner {
        padding: 20px;
    }
    
    .institution-info h2 {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    .header .container {
        flex-direction: column;
        gap: 20px;
    }
    
    .gradient-text {
        font-size: 36px;
    }
    
    .logo-circle-large {
        width: 150px;
        height: 150px;
    }
    
    .logo-circle-large img {
        width: 90px;
        height: 90px;
    }
}