/**
 * SAGE - Animations and Visual Effects
 * Contains keyframes, transitions, celebratory animations, and background effects
 */

/* Phase 4: Animated Mathematical Elements - Above Interface */
.math-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 100;
    overflow: hidden;
}

.floating-symbol {
    position: absolute;
    font-size: 2rem;
    color: var(--accent);
    opacity: 0.25;
    animation: float 25s infinite linear;
    font-family: 'Times New Roman', serif;
    user-select: none;
    filter: blur(0px);
    transition: opacity 0.3s ease;
    mix-blend-mode: normal;
    will-change: transform, opacity;
}

.floating-symbol.extra-large {
    font-size: 5rem;
    opacity: 0.15;
    animation: float-spiral 35s infinite linear;
}

.floating-symbol.large {
    font-size: 3.5rem;
    opacity: 0.2;
    animation: float-drift 30s infinite linear;
}

.floating-symbol.medium {
    font-size: 2.5rem;
    opacity: 0.25;
    animation: float-pulse 25s infinite linear;
}

.floating-symbol.small {
    font-size: 1.5rem;
    opacity: 0.3;
    animation: float 20s infinite linear;
}

/* Theme-aware symbol styling */
[data-theme="dark"] .floating-symbol {
    color: var(--accent);
    filter: hue-rotate(0deg) brightness(0.8);
    /* Keep original opacity for good visibility in dark theme */
}

[data-theme="light"] .floating-symbol {
    color: #cbd5e1; /* Light gray instead of accent color */
    filter: none; /* Remove filters for cleaner appearance */
    /* Reduce opacity significantly for light theme subtlety */
    opacity: 0.08 !important;
}

[data-theme="light"] .floating-symbol.extra-large {
    opacity: 0.05 !important;
}

[data-theme="light"] .floating-symbol.large {
    opacity: 0.06 !important;
}

[data-theme="light"] .floating-symbol.medium {
    opacity: 0.08 !important;
}

[data-theme="light"] .floating-symbol.small {
    opacity: 0.1 !important;
}

/* Light theme keyframe opacity overrides */
[data-theme="light"] .floating-symbol {
    --symbol-opacity: 0.08;
}

@keyframes float {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0;
    }
    5% {
        opacity: var(--symbol-opacity, 0.25);
    }
    95% {
        opacity: var(--symbol-opacity, 0.25);
    }
    100% {
        transform: translateY(-110vh) rotate(360deg);
        opacity: 0;
    }
}

@keyframes float-horizontal {
    0% {
        transform: translateX(0) translateY(0) rotate(0deg);
        opacity: 0;
    }
    5% {
        opacity: var(--symbol-opacity, 0.25);
    }
    95% {
        opacity: var(--symbol-opacity, 0.25);
    }
    100% {
        transform: translateX(110vw) translateY(0) rotate(360deg);
        opacity: 0;
    }
}

.floating-symbol.horizontal {
    animation: float-horizontal 35s infinite linear;
}

/* New drift animation for more dynamic movement */
@keyframes float-drift {
    0% {
        transform: translateY(0) translateX(0px) rotate(0deg);
        opacity: 0;
    }
    5% {
        opacity: var(--symbol-opacity, 0.25);
    }
    25% {
        transform: translateY(-30vh) translateX(50px) rotate(90deg);
    }
    50% {
        transform: translateY(-60vh) translateX(-30px) rotate(180deg);
    }
    75% {
        transform: translateY(-90vh) translateX(20px) rotate(270deg);
    }
    95% {
        opacity: var(--symbol-opacity, 0.25);
    }
    100% {
        transform: translateY(-110vh) translateX(0px) rotate(360deg);
        opacity: 0;
    }
}

.floating-symbol.drift {
    animation: float-drift 30s infinite ease-in-out;
}

/* Spiral animation for extra-large symbols */
@keyframes float-spiral {
    0% {
        transform: translateY(0) translateX(0px) rotate(0deg) scale(0.5);
        opacity: 0;
    }
    10% {
        opacity: var(--symbol-opacity, 0.4);
        transform: translateY(-15vh) translateX(30px) rotate(45deg) scale(0.7);
    }
    25% {
        transform: translateY(-30vh) translateX(-40px) rotate(90deg) scale(0.9);
    }
    50% {
        transform: translateY(-50vh) translateX(60px) rotate(180deg) scale(1);
    }
    75% {
        transform: translateY(-70vh) translateX(-50px) rotate(270deg) scale(1);
    }
    90% {
        opacity: var(--symbol-opacity, 0.4);
        transform: translateY(-85vh) translateX(20px) rotate(315deg) scale(0.8);
    }
    100% {
        transform: translateY(-110vh) translateX(0px) rotate(360deg) scale(0.5);
        opacity: 0;
    }
}

.floating-symbol.spiral {
    animation: float-spiral 35s infinite ease-in-out;
}

/* Pulse animation for medium symbols */
@keyframes float-pulse {
    0% {
        transform: translateY(0) rotate(0deg) scale(1);
        opacity: 0;
    }
    10% {
        opacity: var(--symbol-opacity, 0.25);
        transform: translateY(-10vh) rotate(36deg) scale(1);
    }
    25% {
        transform: translateY(-25vh) rotate(90deg) scale(1.1);
    }
    50% {
        transform: translateY(-50vh) rotate(180deg) scale(0.9);
    }
    75% {
        transform: translateY(-75vh) rotate(270deg) scale(1.1);
    }
    90% {
        opacity: var(--symbol-opacity, 0.25);
        transform: translateY(-90vh) rotate(324deg) scale(1);
    }
    100% {
        transform: translateY(-110vh) rotate(360deg) scale(1);
        opacity: 0;
    }
}

.floating-symbol.pulse {
    animation: float-pulse 25s infinite ease-in-out;
}

/* Phase 4: Celebratory Animations for Achievements */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    overflow: hidden;
}

.confetti {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: confetti-fall 3s linear forwards;
}

.confetti.square {
    border-radius: 0;
}

.confetti.triangle {
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-bottom: 8px solid;
    border-radius: 0;
}

@keyframes confetti-fall {
    0% {
        transform: translateY(-100vh) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

.celebration-burst {
    position: fixed;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 999;
    background: radial-gradient(circle, rgba(255,215,0,0.8) 0%, rgba(255,165,0,0.6) 30%, transparent 70%);
    animation: burst 0.6s ease-out forwards;
}

@keyframes burst {
    0% {
        transform: scale(0) rotate(0deg);
        opacity: 1;
    }
    50% {
        transform: scale(1) rotate(180deg);
        opacity: 0.8;
    }
    100% {
        transform: scale(1.5) rotate(360deg);
        opacity: 0;
    }
}

.achievement-celebration {
    position: relative;
    z-index: 1001;
}

.achievement-celebration::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: linear-gradient(45deg, transparent, rgba(255,215,0,0.2), transparent);
    border-radius: 1rem;
    animation: achievement-glow 2s ease-in-out;
    pointer-events: none;
}

@keyframes achievement-glow {
    0%, 100% {
        opacity: 0;
        transform: scale(0.8);
    }
    50% {
        opacity: 1;
        transform: scale(1.1);
    }
}

.sparkle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: #ffd700;
    border-radius: 50%;
    animation: sparkle 1.5s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% {
        opacity: 0;
        transform: scale(0) rotate(0deg);
    }
    50% {
        opacity: 1;
        transform: scale(1) rotate(180deg);
    }
}

/* Loading Animations */
@keyframes slideInDown {
    from {
        transform: translate3d(0, -100%, 0);
        visibility: visible;
    }
    to {
        transform: translate3d(0, 0, 0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 100%, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.05);
        opacity: 1;
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Animation Classes */
.slide-in-down {
    animation: slideInDown 0.5s ease-out;
}

.fade-in-up {
    animation: fadeInUp 0.5s ease-out;
}

.pulse-animation {
    animation: pulse 2s infinite;
}

.rotate-animation {
    animation: rotate 2s linear infinite;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    .floating-symbol {
        animation: none;
        opacity: 0.05;
    }
    .confetti, .celebration-animation {
        animation: none !important;
    }
    .slide-in-down, .fade-in-up, .pulse-animation, .rotate-animation {
        animation: none;
    }
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}