/* Custom CSS */
.text-shadow {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.bg-gold-gradient {
    background: linear-gradient(135deg, #f5f5f5 0%, #e6c88a 100%);
}

/* Header title ULTRA enhancement */
.header-title-enhanced {
    text-shadow: 
        0 0 10px rgba(197, 160, 89, 0.8),
        0 0 20px rgba(197, 160, 89, 0.6),
        0 0 30px rgba(197, 160, 89, 0.4),
        0 4px 8px rgba(0, 0, 0, 0.3),
        0 8px 16px rgba(0, 0, 0, 0.2);
    letter-spacing: 0.05em;
    transform: scale(1);
    transition: transform 0.3s ease;
    position: relative;
    filter: brightness(1.1) contrast(1.2);
}

.header-title-enhanced:hover {
    transform: scale(1.05);
}

.header-title-enhanced span {
    position: relative;
    display: inline-block;
    animation: shimmer 3s ease-in-out infinite;
    font-weight: 900;
    -webkit-text-stroke: 2px rgba(26, 32, 44, 0.3);
    paint-order: stroke fill;
}

.header-title-enhanced span::before {
    content: '3C分析習得無料講座';
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    background: linear-gradient(45deg, #1a202c, #4a5568, #1a202c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: blur(2px);
    opacity: 0.5;
}

.header-title-enhanced span::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 6px;
    background: linear-gradient(90deg, transparent, #c5a059, #fbbf24, #c5a059, transparent);
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(197, 160, 89, 0.8);
    animation: glow 2s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% {
        filter: brightness(1) saturate(1);
    }
    50% {
        filter: brightness(1.3) saturate(1.3);
    }
}

@keyframes glow {
    0%, 100% {
        opacity: 0.6;
        box-shadow: 0 0 20px rgba(197, 160, 89, 0.6);
    }
    50% {
        opacity: 1;
        box-shadow: 0 0 40px rgba(197, 160, 89, 1), 0 0 60px rgba(251, 191, 36, 0.6);
    }
}

.animate-pulse-slow {
    animation: pulse-slow 4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-slow {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.9;
    }
}

/* Accordion styles */
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    padding-top: 0;
    padding-bottom: 0;
}

.accordion-content.active {
    max-height: 500px;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.accordion-icon {
    transition: transform 0.3s ease;
}

.accordion-header.active .accordion-icon {
    transform: rotate(180deg);
}