/* ===========================
   KEYFRAME ANIMATIONS
   =========================== */

@keyframes scrollBounce {
    0%, 20%, 50%, 80%, 100% {
        transform: rotate(45deg) translateY(0);
    }
    40% {
        transform: rotate(45deg) translateY(8px);
    }
    60% {
        transform: rotate(45deg) translateY(4px);
    }
}

@keyframes shieldPulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.8);
        opacity: 0;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.4;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes gridShift {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(60px);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes borderGlow {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
}

/* ===========================
   HERO BACKGROUND ANIMATIONS
   =========================== */

.hero__grid {
    animation: gridShift 20s linear infinite;
}

.hero__glow--1 {
    animation: glowPulse 4s ease-in-out infinite, float 8s ease-in-out infinite;
}

.hero__glow--2 {
    animation: glowPulse 4s ease-in-out infinite 2s, float 8s ease-in-out infinite 4s;
}

/* ===========================
   TRUST SHIELD ANIMATION
   =========================== */

.trust-shield .shield-pulse::before {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 1px solid var(--accent-emerald-dim);
    animation: shieldPulse 2s ease-out infinite 1s;
}

.shield-icon {
    animation: float 3s ease-in-out infinite;
}

/* ===========================
   COUNTER ANIMATION
   =========================== */

.stat-number {
    transition: all 0.6s ease-out;
}

.stat-number.counted {
    opacity: 1;
}

/* ===========================
   CARD HOVER GLOW BORDERS
   =========================== */

.feature-card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: transparent;
    -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 var(--transition-base);
    pointer-events: none;
}

.feature-card--cyan::after {
    background: linear-gradient(135deg, var(--accent-cyan), transparent, var(--accent-cyan));
}

.feature-card--violet::after {
    background: linear-gradient(135deg, var(--accent-violet), transparent, var(--accent-violet));
}

.feature-card:hover::after {
    opacity: 0.6;
    animation: borderGlow 2s ease-in-out infinite;
}

/* ===========================
   BUTTON GLOW ANIMATION
   =========================== */

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

.btn--glow::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    transform: rotate(45deg);
    transition: transform 0.6s;
}

.btn--glow:hover::before {
    transform: rotate(45deg) translate(100%, 100%);
}

/* ===========================
   SCROLL REVEAL (no-JS fallback for AOS)
   =========================== */

[data-aos] {
    transition-property: transform, opacity;
}

/* ===========================
   SECTION TRANSITION GRADIENTS
   =========================== */

.section--chang {
    background: linear-gradient(
        180deg,
        var(--bg-primary) 0%,
        rgba(0, 212, 255, 0.02) 30%,
        rgba(0, 212, 255, 0.02) 70%,
        var(--bg-primary) 100%
    );
}

.section--eve {
    background: linear-gradient(
        180deg,
        var(--bg-primary) 0%,
        rgba(124, 58, 237, 0.02) 30%,
        rgba(124, 58, 237, 0.02) 70%,
        var(--bg-primary) 100%
    );
}

/* ===========================
   HERO ENTRANCE ANIMATIONS
   =========================== */

.hero-anim {
    opacity: 0;
    transform: translateY(24px);
    animation: heroFadeIn 0.8s ease forwards;
}

.hero-anim--1 { animation-delay: 0.1s; }
.hero-anim--2 { animation-delay: 0.3s; }
.hero-anim--3 { animation-delay: 0.5s; }
.hero-anim--4 { animation-delay: 0.7s; }

@keyframes heroFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header {
    opacity: 0;
    animation: heroFadeIn 0.6s ease forwards;
    animation-delay: 0.1s;
}