:root {
    --primary-blue: #1a4b8c;
    --accent-blue: #0984e3;
    --text-dark: #2d3436;
    --text-light: #636e72;
    --white: #ffffff;
    --gradient-bg: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Noto Sans Bengali', sans-serif;
}

body {
    background: var(--gradient-bg);
    min-height: 100vh;
    overflow: hidden;
    /* For balloon containment */
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Balloon Animation */
.balloon-container {
    position: absolute;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    z-index: 0;
    pointer-events: none;
}

.balloon {
    position: absolute;
    bottom: -100px;
    width: 40px;
    height: 50px;
    background: var(--c);
    border-radius: 50%;
    opacity: 0.8;
    /* Faster and smoother */
    animation: floatUp 8s linear infinite;
    animation-duration: calc(15s - (var(--i) * 0.2s));
    animation-delay: calc(var(--i) * -1s);
    left: calc(var(--i) * 4%);
}

#fireworks-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    /* Behind content but check if balloons are z-0? Balloons are z-0. Content is z-1. */
}

.firework-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    box-shadow: 0 0 6px #fff;
    pointer-events: none;
}

/* The string/tail */
.balloon::before {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 20px;
    background: transparent;
    border-left: 2px solid var(--c);
    /* Use border for color match */
    /* Make it look slightly curved */
    border-radius: 50%;
    opacity: 0.8;
    transform-origin: top center;
    animation: tailWiggle 1s ease-in-out infinite alternate;
}

@keyframes floatUp {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 0.8;
    }

    25% {
        transform: translateY(-30vh) translateX(30px) rotate(5deg);
    }

    50% {
        transform: translateY(-60vh) translateX(-30px) rotate(-5deg);
    }

    75% {
        transform: translateY(-90vh) translateX(30px) rotate(5deg);
    }

    100% {
        transform: translateY(-120vh) translateX(-10px) rotate(0deg);
        opacity: 0;
    }
}

@keyframes tailWiggle {
    0% {
        transform: translateX(-50%) rotate(-15deg) scaleY(1.1);
        border-radius: 50% 0 0 50%;
    }

    100% {
        transform: translateX(-50%) rotate(15deg) scaleY(0.9);
        border-radius: 0 50% 50% 0;
    }
}

/* Main Layout */
.container {
    width: 90%;
    max-width: 1400px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
    padding: 40px;
    backdrop-filter: blur(10px);
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: center;
}

/* Left Section */
.left-section {
    text-align: center;
    padding-right: 40px;
    border-right: 1px solid #e0e0e0;
}

.hero-text {
    margin-bottom: 40px;
    position: relative;
}

.hero-text h1 {
    font-size: 5rem;
    line-height: 1;
    color: var(--primary-blue);
    text-shadow: 3px 3px 0px rgba(0, 0, 0, 0.1);
    font-weight: 700;
}

.hero-text .shuvo {
    transform: translateX(-30px);
}

.hero-text .udbodhon {
    font-size: 6rem;
    color: #15386b;
}

/* Stylized underline effect */
.hero-text::after {
    content: '';
    display: block;
    width: 150px;
    height: 4px;
    background: linear-gradient(to right, transparent, var(--primary-blue), transparent);
    margin: 20px auto;
}

.event-details {
    text-align: left;
    display: inline-block;
}

.event-details p {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin: 12px 0;
    font-weight: 500;
    line-height: 1.6;
    display: flex;
    align-items: center;
    gap: 10px;
}

.event-details i {
    color: var(--accent-blue);
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.divider {
    color: #e74c3c;
    margin: 0 5px;
    font-size: 0.8em;
}

/* Right Section */
.right-section {
    color: var(--primary-blue);
}

.header-text {
    margin-bottom: 40px;
}

.header-text p {
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.header-text h2 {
    font-size: 2.2rem;
    font-weight: 700;
}

.guest-info {
    margin-bottom: 40px;
}

.guest-card {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    border-left: 5px solid var(--accent-blue);
}

.badge {
    background: #1a4b8c;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: inline-block;
    margin-bottom: 10px;
}

.guest-card h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
    color: #2d3436;
}

.guest-card p {
    color: #636e72;
}

.footer-logos {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    border-top: 1px solid #e0e0e0;
    padding-top: 20px;
}

.organizer .logo-text {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 5px;
}

.bd-logo {
    width: 40px;
}

.tech-support .brand {
    color: #27ae60;
    font-weight: 700;
    font-size: 1.2rem;
}

.action-button-container {
    margin-top: 30px;
    text-align: right;
}

.go-button {
    display: inline-block;
    background: #ff6b6b;
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
}

.go-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 107, 107, 0.6);
}

.go-button i {
    margin-left: 8px;
}

/* Responsive */
@media (max-width: 968px) {
    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .left-section {
        border-right: none;
        border-bottom: 1px solid #e0e0e0;
        padding-right: 0;
        padding-bottom: 30px;
    }

    .hero-text h1 {
        font-size: 3rem;
    }

    .hero-text .udbodhon {
        font-size: 4rem;
    }

    .container {
        padding: 20px;
        margin: 20px 0;
        height: auto;
    }

    body {
        height: auto;
        overflow-y: auto;
    }

    .balloon-container {
        height: 100%;
        position: fixed;
    }
}