:root {
    --bg-dark: #0a0a0c;
    --card-bg: rgba(18, 18, 22, 0.7);
    --accent-orange: #FF6B00;
    --accent-orange-glow: rgba(255, 107, 0, 0.3);
    --text-main: #ffffff;
    --text-dim: #a0a0ab;
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

body {
    background-color: var(--bg-dark);
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.card-container {
    position: relative;
    width: 100%;
    max-width: 450px;
}

.glow-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 130%;
    height: 130%;
    background: radial-gradient(circle at 50% 50%, var(--accent-orange-glow), transparent 60%);
    z-index: -1;
    filter: blur(80px);
}

.invite-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.8);
    position: relative;
    overflow: hidden;
}

.invite-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-orange), #FF8A00);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 45px;
}

.brand-logo {
    height: 65px;
    width: auto;
    object-fit: contain;
}

.badge {
    background: rgba(255, 107, 0, 0.1);
    padding: 6px 12px;
    border-radius: 30px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 1px;
    border: 1px solid rgba(255, 107, 0, 0.2);
    color: var(--accent-orange);
}

.hero h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 2.1rem;
    line-height: 1.2;
    margin-bottom: 25px;
    font-weight: 800;
    letter-spacing: -1px;
}

.highlight {
    color: var(--accent-orange);
}

.speaker-info {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.speaker-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-orange);
    box-shadow: 0 0 20px var(--accent-orange-glow);
}

.speaker-text h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 2px;
}

.speaker-text p {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.description {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-dim);
    margin-bottom: 35px;
}

.details {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 35px;
}

.event-time {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--glass-border);
}

.event-time .icon {
    font-size: 1.4rem;
    filter: sepia(1) saturate(5) hue-rotate(-20deg); /* Colorize emoji to orange-ish */
}

.event-time .label {
    font-size: 0.7rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.event-time .value {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-main);
}

.topics {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.topic-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.dot {
    width: 8px;
    height: 8px;
    background: var(--accent-orange);
    border-radius: 50%;
    margin-top: 7px;
    flex-shrink: 0;
    box-shadow: 0 0 10px var(--accent-orange-glow);
}

.topic-item p {
    font-size: 0.9rem;
    line-height: 1.5;
    color: #f0f0f0;
}

footer .cta {
    text-align: center;
}

footer .cta p {
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-bottom: 20px;
}

.button {
    display: block;
    text-decoration: none;
    background: linear-gradient(135deg, #FF6B00 0%, #FF8A00 100%);
    color: #fff;
    padding: 18px;
    border-radius: 12px;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 10px 25px var(--accent-orange-glow);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(255, 107, 0, 0.5);
}


@media (max-width: 400px) {
    .invite-card {
        padding: 25px;
    }
    .hero h1 {
        font-size: 1.8rem;
    }
}