/* Login Page Animation Styles */
/* Adapted from hero-animation for login background */

.login-animation-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, var(--login-anim-bg-start) 0%, var(--login-anim-bg-mid) 50%, var(--login-anim-bg-end) 100%);
    overflow: hidden;
}

/* SVG Animation Container */
.login-animation-container .animation-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.login-animation-container .wave-container {
    position: absolute;
    width: 100%;
    height: 100%;
}

/* Sound Waves */
.login-animation-container .sound-wave {
    position: absolute;
    width: 100%;
    height: 2px;
    opacity: 0;
    animation: loginWaveMove 4s ease-in-out infinite;
    /* GPU acceleration for Safari/macOS */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    will-change: transform, opacity;
}

.login-animation-container .sound-wave:nth-child(1) {
    top: 20%;
    animation-delay: 0s;
}

.login-animation-container .sound-wave:nth-child(2) {
    top: 35%;
    animation-delay: 0.5s;
}

.login-animation-container .sound-wave:nth-child(3) {
    top: 50%;
    animation-delay: 1s;
}

.login-animation-container .sound-wave:nth-child(4) {
    top: 65%;
    animation-delay: 1.5s;
}

.login-animation-container .sound-wave:nth-child(5) {
    top: 80%;
    animation-delay: 5s;
}

@keyframes loginWaveMove {
    0% {
        opacity: 0;
        transform: translateX(-100%) scaleY(1);
    }
    20% {
        opacity: 0.6;
    }
    50% {
        transform: translateX(0%) scaleY(2);
        opacity: 0.8;
    }
    80% {
        opacity: 0.4;
    }
    100% {
        opacity: 0;
        transform: translateX(100%) scaleY(1);
    }
}

/* Floating particles */
.login-animation-container .particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--login-anim-particle-color);
    border-radius: 50%;
    animation: loginFloat 6s ease-in-out infinite;
    /* GPU acceleration for Safari/macOS */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    will-change: transform, opacity;
}

@keyframes loginFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0;
    }
    50% {
        transform: translate(var(--tx), var(--ty)) scale(1.5);
        opacity: 1;
    }
}

/* Musical notes transforming to text */
.login-animation-container .morphing-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.login-animation-container .morph-item {
    position: absolute;
    font-size: 2rem;
    opacity: 0;
    animation: loginMorphAnimation 12s ease-in-out infinite;
    /* GPU acceleration for Safari/macOS */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    will-change: transform, opacity;
}

@keyframes loginMorphAnimation {
    0% {
        opacity: 0;
        transform: translateY(100px) rotate(0deg) scale(9.5);
    }
    25% {
        opacity: 1;
        transform: translateY(0) rotate(180deg) scale(1);
    }
    50% {
        opacity: 1;
        transform: translateY(-20px) rotate(360deg) scale(4.2);
    }
    75% {
        opacity: 0.5;
        transform: translateY(-40px) rotate(540deg) scale(0.8);
    }
    100% {
        opacity: 0;
        transform: translateY(-100px) rotate(720deg) scale(0.3);
    }
}

/* Gradient orbs */
.login-animation-container .gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
    animation: loginOrbFloat 10s ease-in-out infinite;
    /* GPU acceleration for Safari/macOS */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    will-change: transform;
}

.login-animation-container .orb-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--login-anim-orb1-start), var(--login-anim-orb1-end));
    top: -200px;
    left: -200px;
}

.login-animation-container .orb-2 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--login-anim-orb2-start), var(--login-anim-orb2-end));
    bottom: -250px;
    right: -250px;
    animation-delay: -5s;
}

.login-animation-container .orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--login-anim-orb3-start), var(--login-anim-orb3-end));
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -2.5s;
}

@keyframes loginOrbFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-30px, 30px) scale(0.9);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .login-animation-container .gradient-orb {
        filter: blur(40px);
    }

    .login-animation-container .orb-1 {
        width: 250px;
        height: 250px;
    }

    .login-animation-container .orb-2 {
        width: 300px;
        height: 300px;
    }

    .login-animation-container .orb-3 {
        width: 200px;
        height: 200px;
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .login-animation-container .sound-wave,
    .login-animation-container .particle,
    .login-animation-container .morph-item,
    .login-animation-container .gradient-orb {
        animation: none;
        opacity: 0.3;
    }
}