.gold-gradient {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-overlay {
    background: linear-gradient(to bottom, rgba(15, 23, 42, 0.8), rgba(2, 6, 23, 0.9));
}
.card-hover {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.card-hover:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 30px -10px rgba(245, 158, 11, 0.15);
    border-color: rgba(245, 158, 11, 0.3);
}
.text-shadow {
    text-shadow: 0 4px 8px rgba(0,0,0,0.8);
}

/* Custom Wave Dividers */
.custom-shape-divider-bottom-1 {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    transform: rotate(180deg);
}
.custom-shape-divider-bottom-1 svg {
    position: relative;
    display: block;
    width: calc(137% + 1.3px);
    height: 121px;
}
.custom-shape-divider-bottom-1 .shape-fill {
    fill: #0f172a; /* Slate 900 */
}

.custom-shape-divider-top-1 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}
.custom-shape-divider-top-1 svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 100px;
}
.custom-shape-divider-top-1 .shape-fill {
    fill: #0f172a; /* Slate 900 - matching previous section */
}

.custom-shape-divider-top-2 .shape-fill {
    fill: #020617; /* Slate 950 - matching Involve section */
}

/* Glassmorphism */
.glass-nav {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.glass-card {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.btn-shine {
    position: relative;
    overflow: hidden;
}
.btn-shine::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}
.btn-shine:hover::after {
    left: 100%;
}

/* ECG / Heartbeat Line Animation */
.ecg-line {
    fill: none;
    stroke-width: 1; /* Thinner line */
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 1000; /* Length of the path */
    stroke-dashoffset: 1000; /* Start hidden */
    animation: ecg-draw 4s linear infinite;
}

.neon-ecg {
    filter: drop-shadow(0 0 2px #d8b4fe) drop-shadow(0 0 4px #a855f7); /* Reduced glow spread for thinner line */
}

@keyframes ecg-draw {
    0% {
        stroke-dashoffset: 1000;
    }
    100% {
        stroke-dashoffset: 0;
    }
}

/* Slideshow Styles */
.slideshow-container {
    position: relative;
}

.slide {
    display: none;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.slide.active {
    display: block;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.fade-slide {
    animation: fadeInOut 1s ease-in-out;
}

@keyframes fadeInOut {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

/* Audio Notification Popup */
.audio-notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 1rem;
    padding: 1rem 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(245, 158, 11, 0.2);
    animation: slideInRight 0.5s ease-out;
    transition: opacity 0.3s ease-out;
}

.audio-notification.hidden {
    display: none;
}

.audio-notification.fade-out {
    opacity: 0;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@media (max-width: 640px) {
    .audio-notification {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        padding: 0.875rem 1rem;
    }
}