*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Georgia, 'Times New Roman', Times, serif;
}
html{
    font-size: 100%;
}
body{
    font-size: 100%;
    background: linear-gradient(100deg, #7c3aed, #0f172a, #0f172a, #0f172a, #2563eb);
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 14px;
    padding: 20px;
}

.container{
    backdrop-filter: blur(30px);
    background: rgba(15, 12, 41, 0.45);
    width: min(570px, 94vw);
    min-height: 480px;
    max-height: 92vh;
    display: flex;
    border-radius: 22px;
    box-shadow: 0 0 0 1px rgba(255,255,255,0.15), 0 25px 60px rgba(0,0,0,0.45);
    position: relative;
    overflow: hidden;
}
.container-form{
    width: 80%;
    overflow-y: auto;
    overflow-x: hidden;
}

img {
    width: clamp(56px, 14vw, 74px);
    height: clamp(56px, 14vw, 74px);
    margin: 0 0 6px 0;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(255,255,255,0.85);
    background: #0f172a;
    box-shadow: 0 0 0 4px rgba(124,58,237,0.35), 0 8px 20px rgba(0,0,0,0.4);
    animation: latidos 3s infinite;
}
@keyframes latidos{
    0%{
        transform: scale(1.05);
    }
    50%{
        transform: scale(1.0);
    }
    100%{
        transform: scale(1.05);
    }
}

.container-form form{
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 10px 8px;
}
.container-form h2{
    text-align: center;
    font-size: clamp(1.3em, 4vw, 1.8em);
    margin-bottom: 18px;
    color: #ffffff;
    font-weight: 700;
    letter-spacing: 0.3px;
}
.container-form .h2{
    text-align: center;
    font-size: clamp(1.3em, 4vw, 1.8em);
    margin-bottom: 18px;
    color: #ffffff;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.container-input{
    width: 100%;
    max-width: 230px;
    height: clamp(40px, 11vw, 44px);
    margin-bottom: 10px;
    justify-content: flex-start;
    align-items: center;
    display: flex;
    gap: 8px;
    padding: 0 1em;
    background: rgba(8, 10, 25, 0.55);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 30px;
    transition: 0.25s ease;
}
.container-input:focus-within{
    border-color: #7c3aed;
    box-shadow: 0 0 0 3px rgba(124,58,237,0.25);
    background: rgba(8, 10, 25, 0.75);
}
.container-input input::placeholder{
    color: #b9bdd6;
}
.container-input input{
    color: #ffffff;
    border:none;
    outline: none;
    width: 100%;
    height: 100%;
    background-color: transparent;
    font-size: 0.95em;
}
.container-input input[type="checkbox"]{
    width: 15px;
    height: 15px;
    accent-color: #2563eb;
    cursor: pointer;
    flex-shrink: 0;
}
.container-form a{
    color: #b9a6ff;
    font-size: 0.85em;
    margin-bottom: 16px;
    margin-top: 2px;
}

.button{
    width: 100%;
    max-width: 230px;
    height: clamp(42px, 11vw, 46px);
    font-size: 1em;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    margin-top: 8px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    transition: 0.3s ease-out;
    text-transform: uppercase;
}
.buttonR{
    width: 100%;
    max-width: 230px;
    height: clamp(42px, 11vw, 46px);
    font-size: 1em;
    font-weight: 700;
    letter-spacing: 0.5px;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    margin-top: 8px;
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
    color: white;
    transition: 0.3s ease-out;
    text-transform: uppercase;
}

.btn:hover{
    background: white;
    color: #2563eb;
    border: 2px solid #2563eb;
}
.btnR:hover{
    background: white;
    color: #7c3aed;
    border: 2px solid #7c3aed;
}
.button:hover, .buttonR:hover {
    transition: 0.3s ease;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.35);
}

.sign-in{
    transform: translateX(0);
    transition: 0.5s ease-in-out;
}
.sign-up{
    transform: translateX(-100%);
    transition: 0.5s ease-in-out;
}
.container.toggle .sign-in{
    transform: translateX(100%);
    transition: 0.5s ease-in-out;
}
.container.toggle .sign-up{
    transform: translateX(0);
    transition: 0.5s ease-in-out;
}

.container-return{
    background: linear-gradient(160deg, #2563eb, #1e40af);
    position: absolute;
    width: 50%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateX(100%);
    overflow: hidden;
    transition: transform 0.5s ease-in-out, border-radius 0.5s ease-in-out;
    border-radius: 50% 0 0 50% ;
    box-shadow: 0 0 0 1px rgba(255,255,255,0.15);
}
.return{
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 18px;
    width: 100%;
    height: 100%;
    color: white;
    transition: transform 0.5s ease-in-out;
    text-align: center;
    box-sizing: border-box;
}
.pos-sign-in{
    transform: translateX(100%);
}
.container-return h3{
    font-size: clamp(1.3rem, 5vw, 2rem);
}
.container-return p{
    font-size: clamp(0.8em, 3vw, 1em);
    text-align: center;
}
.container-return .button{
    width: 70%;
    max-width: 170px;
    border: 2px solid white;
    background: transparent;
}
.container.toggle .container-return{
    transform: translateX(0);
    border-radius: 0 50% 50% 0;
    background: linear-gradient(160deg, #7c3aed, #5b21b6);
}
.container.toggle .pos-sign-in{
    transform: translateX(0);
    transition: 0.5s ease-in-out;
}
.container.toggle .pos-sign-up{
    transform: translateX(-100%);
    transition: 0.5s ease-in-out;
}
.error .mensaje {
    display: block;
    background: #2563eb;
    color: white;
    padding: 8px 12px;
    margin-bottom: 12px;
    border-radius: 8px;
    font-size: 0.8em;
    text-align: center;
}

.avatar-picker{
    height: auto;
    padding: 0.5em 1em;
}
.link-avatar{
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    text-decoration: none;
    cursor: pointer;
    margin-bottom: 0;
    width: 100%;
}
.link-avatar span{
    font-size: 0.9em;
    text-decoration: underline;
}
.avatar-preview{
    width: 40px !important;
    height: 40px !important;
    margin: 0 !important;
    flex-shrink: 0;
}

.modal-avatar{
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 90%;
    background: rgba(15, 23, 42, 0.8);
    justify-content: center;
    align-items: center;
    z-index: 999;
}
.modal-avatar.activo{
    display: flex;
}
.modal-avatar-content{
    backdrop-filter: blur(30px);
    background: rgba(31, 26, 107, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    box-shadow: 0 0 3px 3px #ffffff;
    padding: 20px 25px;
    text-align: center;
    color: white;
}
.modal-avatar-content h3{
    margin-bottom: 15px;
    color: white;
}
.opciones-avatar{
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
}
.opciones-avatar .opcion-avatar{
    cursor: pointer;
    transition: 0.3s ease;
}
.opciones-avatar .opcion-avatar:hover{
    transform: scale(1.15);
    box-shadow: 0 0 6px 6px white;
}

.error{
    background: #2563eb;
    color: white;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
}

.acceso-admin{
    font-size: 10px;
    color: rgba(255,255,255,0.15);
    text-decoration: none;
    letter-spacing: 1px;
}
.acceso-admin:hover{
    color: rgba(255,255,255,0.4);
}


@media (max-width: 600px){
    .container{
        width: 96vw;
        min-height: 460px;
    }
    .container-input{
        max-width: 100%;
    }
    .button, .buttonR{
        max-width: 100%;
    }
    .return{
        padding: 0 12px;
        gap: 10px;
    }
    .container-return .button{
        max-width: 140px;
    }
}

@media (max-width: 380px){
    .container-return p{
        display: none;
    }
    .return{
        gap: 12px;
    }
}