/* =========================================================
   CIRCLE SIMULATOR - ANIMATIONS
   Premium Subtle Animations
   ========================================================= */

/* === FADE IN ANIMATIONS === */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s ease forwards;
}

.fade-in-down {
    opacity: 0;
    transform: translateY(-20px);
    animation: fadeInDown 0.5s ease forwards;
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-20px);
    animation: slideInLeft 0.5s ease forwards;
}

.fade-in-right {
    opacity: 0;
    transform: translateX(20px);
    animation: slideInRight 0.5s ease forwards;
}

/* Stagger children */
.stagger > * {
    opacity: 0;
    transform: translateY(20px);
}

.stagger > *:nth-child(1) { animation: fadeInUp 0.4s ease 0.1s forwards; }
.stagger > *:nth-child(2) { animation: fadeInUp 0.4s ease 0.2s forwards; }
.stagger > *:nth-child(3) { animation: fadeInUp 0.4s ease 0.3s forwards; }
.stagger > *:nth-child(4) { animation: fadeInUp 0.4s ease 0.4s forwards; }
.stagger > *:nth-child(5) { animation: fadeInUp 0.4s ease 0.5s forwards; }
.stagger > *:nth-child(6) { animation: fadeInUp 0.4s ease 0.6s forwards; }
.stagger > *:nth-child(7) { animation: fadeInUp 0.4s ease 0.7s forwards; }
.stagger > *:nth-child(8) { animation: fadeInUp 0.4s ease 0.8s forwards; }

/* === HOVER LIFT === */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* === HOVER GLOW === */
.hover-glow {
    transition: all var(--transition-base);
}

.hover-glow:hover {
    box-shadow: var(--shadow-glow);
    border-color: var(--primary-300);
}

/* === SCALE ON HOVER === */
.hover-scale {
    transition: transform var(--transition-base);
}

.hover-scale:hover {
    transform: scale(1.02);
}

/* === FLOATING ILLUSTRATIONS === */
.float-animation {
    animation: float 3s ease-in-out infinite;
}

.float-delayed {
    animation: float 3s ease-in-out 1.5s infinite;
}

/* === GLOW PULSE === */
.glow-pulse {
    animation: pulse-glow 2s ease-in-out infinite;
}

/* === CARD ENTRANCE === */
.card-entrance {
    opacity: 0;
    animation: fadeInUp 0.5s ease forwards;
}

.card-entrance:nth-child(1) { animation-delay: 0.1s; }
.card-entrance:nth-child(2) { animation-delay: 0.2s; }
.card-entrance:nth-child(3) { animation-delay: 0.3s; }
.card-entrance:nth-child(4) { animation-delay: 0.4s; }
.card-entrance:nth-child(5) { animation-delay: 0.5s; }
.card-entrance:nth-child(6) { animation-delay: 0.6s; }

/* === PAGE TRANSITIONS === */
.page-enter {
    animation: fadeInUp 0.4s ease;
}

.page-exit {
    animation: fadeOutDown 0.3s ease forwards;
}

@keyframes fadeOutDown {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(20px);
    }
}

/* === SLIDE TOGGLE === */
.slide-toggle {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), opacity var(--transition-base);
    opacity: 0;
}

.slide-toggle.open {
    max-height: 500px;
    opacity: 1;
}

/* === SMOOTH SCROLL INDICATOR === */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--neutral-400);
    font-size: var(--text-xs);
    font-family: var(--font-primary);
    animation: float 2s ease-in-out infinite;
}

.scroll-indicator .mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--neutral-300);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator .mouse::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--neutral-400);
    border-radius: 2px;
    animation: scroll-wheel 1.5s ease infinite;
}

@keyframes scroll-wheel {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
    50% {
        transform: translateX(-50%) translateY(8px);
        opacity: 0;
    }
}

/* === COUNTER ANIMATION === */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.count-animate {
    animation: countUp 0.6s ease forwards;
}

/* === PROGRESS RING === */
.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring .bg {
    fill: none;
    stroke: var(--neutral-200);
    stroke-width: 6;
}

.progress-ring .fill {
    fill: none;
    stroke: var(--primary-500);
    stroke-width: 6;
    stroke-linecap: round;
    transition: stroke-dashoffset var(--transition-slow);
}

/* === NOTIFICATION === */
.notification {
    position: fixed;
    top: 80px;
    right: var(--space-6);
    padding: var(--space-4) var(--space-6);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    font-family: var(--font-primary);
    z-index: 300;
    animation: slideInRight 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
    border-left: 4px solid var(--primary-500);
}

.notification.success {
    border-left-color: var(--success);
}

.notification.error {
    border-left-color: var(--error);
}

/* === GEOMETRY ANIMATIONS === */
/* Slow rotation for holographic rings */
@keyframes rotate-slow {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Shimmer effect for logo */
@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Background floating particles */
@keyframes background-float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(20px, -20px) scale(1.05);
    }
}

/* Holographic pulse */
@keyframes holo-pulse {
    0%, 100% {
        opacity: 0.6;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

/* Holographic portal floating / breathing */
/* Preserves the translate(-50%,-50%) centering while adding a slow,
   subtle vertical float + scale "breathing" so the portal feels alive.
   The character is NOT part of this animation (it stays visually
   anchored above the portal platform). */
@keyframes portal-breathe {
    0%, 100% {
        transform: translate(-50%, -50%) translateY(0) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) translateY(-8px) scale(1.02);
    }
}

/* Floating particles */
@keyframes particle-float {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.8;
    }
    100% {
        transform: translateY(-100px) translateX(20px);
        opacity: 0;
    }
}

/* Theme icon pop animation */
@keyframes theme-icon-pop {
    0% {
        transform: scale(0.5) rotate(-30deg);
        opacity: 0;
    }
    60% {
        transform: scale(1.2) rotate(10deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

/* === REDUCED MOTION === */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .float-animation,
    .float-delayed {
        animation: none !important;
    }
}