@property --border-angle {
    syntax: "<angle>";
    initial-value: 0deg;
    inherits: false;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.95) translateY(16px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

@keyframes floatSlow {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 0.4; }
    100% { transform: scale(1.8); opacity: 0; }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes countUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes borderRotate {
    0% { --border-angle: 0deg; }
    100% { --border-angle: 360deg; }
}

@keyframes progressFill {
    from { width: 0; }
}

@keyframes timelinePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.3); }
    50% { box-shadow: 0 0 0 8px rgba(14, 165, 233, 0); }
}

@keyframes iconPop {
    0% { transform: scale(1); }
    50% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

.hero-fade-1 { animation: fadeInUp 0.7s ease-out 0.1s both; }
.hero-fade-2 { animation: fadeInUp 0.7s ease-out 0.25s both; }
.hero-fade-3 { animation: fadeInUp 0.7s ease-out 0.4s both; }
.hero-fade-4 { animation: fadeInUp 0.7s ease-out 0.55s both; }

.hero-card-1 { animation: fadeInScale 0.6s ease-out 0.3s both; }
.hero-card-2 { animation: fadeInScale 0.6s ease-out 0.5s both; }
.hero-card-3 { animation: fadeInScale 0.6s ease-out 0.7s both; }
.hero-card-4 { animation: fadeInScale 0.6s ease-out 0.9s both; }

.float-1 { animation: float 6s ease-in-out infinite; }
.float-2 { animation: floatSlow 7s ease-in-out 1s infinite; }
.float-3 { animation: float 5s ease-in-out 0.5s infinite; }

.stat-fade { animation: countUp 0.5s ease-out 0.8s both; }

.cta-glow {
    position: relative;
    overflow: hidden;
}

.cta-glow::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
    transform: rotate(25deg);
    animation: shimmer 3s ease-in-out infinite;
}

.grid-bg {
    background-image:
        linear-gradient(rgba(148,163,184,0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148,163,184,0.07) 1px, transparent 1px);
    background-size: 48px 48px;
}

.dark .grid-bg {
    background-image:
        linear-gradient(rgba(148,163,184,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148,163,184,0.05) 1px, transparent 1px);
}

.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

.track-card {
    position: relative;
    background: white;
    border-radius: 1rem;
}

.dark .track-card {
    background: rgba(30, 41, 59, 0.8);
}

.track-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: conic-gradient(from var(--border-angle, 0deg), #0ea5e9, #6366f1, #8b5cf6, #0ea5e9);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.5s ease;
    animation: borderRotate 3s linear infinite;
}

.track-card:hover::before {
    opacity: 1;
}

.timeline-line {
    position: relative;
}

.timeline-line::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 28px;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #0ea5e9, #6366f1, transparent);
    border-radius: 999px;
}

.feature-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
}

.feature-card:hover .feature-icon {
    animation: iconPop 0.4s ease;
}

.feature-bar-fill {
    transition: width 0.6s ease;
}