:root {
    --rsvp-bg: rgba(255,255,255,0.05);
    --rsvp-text: #ffffff;
    --input-bg: rgba(255,255,255,0.1);
    --input-border: rgba(255,255,255,0.2);
    --input-text: #ffffff;
    --input-placeholder: rgba(255,255,255,0.6);
    --slayer-bg: #111111;
    --slayer-red: #d32f2f;
    --slayer-orange: #ff9800;
    --slayer-yellow: #ffeb3b;
    --slayer-text: #e0e0e0;
    --slayer-gold: #b8860b;
    --cover-bg: linear-gradient(140deg, #b71c1c 0%, #c62828 45%, #d32f2f 100%);
    --hero-bg: linear-gradient(140deg, #b71c1c 0%, #c62828 45%, #d32f2f 100%);
    --footer-bg: linear-gradient(135deg, #c62828 0%, #b71c1c 100%);
    --surface-soft: rgba(0, 0, 0, 0.4);
    --line: rgba(255, 255, 255, 0.2);
}
/* Theme 14 - Demon Slayer Flame */



body.theme-slayer {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--slayer-bg);
    color: var(--slayer-text);
    background-image: linear-gradient(rgba(17, 17, 17, 0.9), rgba(17, 17, 17, 0.9)), url('https://www.transparenttextures.com/patterns/black-scales.png');
}

/* Particle Canvas */
#flame-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: -1;
}

.theme-slayer h1, .theme-slayer h2, .theme-slayer h3, .theme-slayer .cover-title, .title-slayer {
    font-family: 'Yuji Syuku', serif;
}

.text-flame {
    background: linear-gradient(to top, var(--slayer-red), var(--slayer-orange), var(--slayer-yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 10px rgba(255, 152, 0, 0.3);
}

.scroll-slayer {
    background: rgba(0, 0, 0, 0.8);
    border: 2px solid var(--slayer-orange);
    border-radius: 5px;
    padding: 40px;
    box-shadow: 0 0 30px rgba(211, 47, 47, 0.5);
    max-width: 450px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.scroll-slayer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, transparent, var(--slayer-orange), transparent);
}

.btn-slayer {
    background: transparent;
    color: var(--slayer-orange);
    border: 2px solid var(--slayer-orange);
    padding: 12px 30px;
    font-family: 'Yuji Syuku', serif;
    font-size: 20px;
    cursor: pointer;
    border-radius: 0;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-slayer::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--slayer-orange);
    z-index: -1;
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.3s;
}

.btn-slayer:hover {
    color: var(--slayer-bg);
}

.btn-slayer:hover::after {
    transform: scaleY(1);
}

.card-slayer, .container-slayer {
    background: rgba(20, 20, 20, 0.8);
    border-bottom: 3px solid var(--slayer-red);
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    padding: 25px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.slayer-photo-wrapper {
    width: 180px;
    height: 180px;
    margin: 0 auto 15px;
    border: 3px solid var(--slayer-gold);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.slayer-photo-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: contrast(1.1) saturate(1.2);
}

.role-slayer {
    background: linear-gradient(45deg, var(--slayer-red), var(--slayer-orange));
    color: white;
    padding: 4px 15px;
    border-radius: 15px;
    font-size: 14px;
    letter-spacing: 1px;
}

.text-slayer {
    color: var(--slayer-text);
}

.bg-slayer-dark {
    background: rgba(10, 10, 10, 0.9);
    padding: 40px 0;
}

/* Custom inputs */
.theme-slayer .form-group input, .theme-slayer .form-group textarea {
    background: rgba(0,0,0,0.5);
    border: 1px solid var(--slayer-gold);
    color: var(--slayer-text);
    border-radius: 0;
}

.theme-slayer .form-group input:focus, .theme-slayer .form-group textarea:focus {
    outline: none;
    border-color: var(--slayer-orange);
    box-shadow: 0 0 10px rgba(255, 152, 0, 0.3);
}

.footer-slayer {
    background: #000;
    border-top: 2px solid var(--slayer-red);
    padding: 20px 0;
}



}




@media (max-width: 768px) {
    .couple-container, .event-container { gap: 20px !important; }
    .hero-names { font-size: 2.5rem !important; }
}
/* Nezuko Animation Styles */
.nezuko-container {
    position: fixed;
    bottom: 20px;
    left: -150px; /* Start off-screen left */
    z-index: 999;
    pointer-events: none;
}

.nezuko-sprite {
    width: 120px;
    height: auto;
    filter: drop-shadow(0 5px 15px rgba(0,0,0,0.3));
    transform: scaleX(-1); /* Flip to face right */
}

.nezuko-run {
    animation: nezukoRunLeftToRight 8s linear forwards;
}

@keyframes nezukoRunLeftToRight {
    0% { left: -150px; }
    100% { left: 110vw; }
}

@media (max-width: 768px) {
    .nezuko-sprite {
        width: 80px;
    }
}