:root {
    --bg-primary: #121212;
    --bg-secondary: #000000;
    --bg-overlay: rgba(0, 0, 0, 0.8);
    --text-primary: #ffffff;
    --text-secondary: #bdbdbd;
    --text-muted: #888888;
    --accent-primary: #3a7;
    --accent-secondary: #2f9766;
    --accent-hover: #277b55;
    --danger: #e06b6b;
    --warning: #f0ad4e;
    --success: #5cb85c;
    --border-radius: 16px;
    --transition: all 0.3s ease;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

@font-face {
    font-family: 'Lora';
    src: url('../tipography/Lora-VariableFont_wght.ttf') format('truetype');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

* {
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
    box-sizing: border-box;
    scroll-behavior: smooth;
    color: inherit;
    font-family: 'Lora';
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.rta__main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-image: url('../images/background_login.webp');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    width: 100%;
    min-height: 100vh;
    container-type: inline-size;
    container-name: rtaMain;
}

.login__container {
    display: flex;
    flex-direction: column;
    width: 100%;
    min-height: 100vh;
    background-color: var(--bg-overlay);
    color: var(--text-primary);
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.login__form {
    width: 100%;
    max-width: 450px;
    display: flex;
    flex-direction: column;
    gap: 30px;
    background-color: var(--bg-overlay);
    padding: 30px 25px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.login__title {
    text-align: center;
    font-size: 1.7rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.data__container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.login__label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.login__input {
    background-color: transparent;
    padding: 10px;
    border: none;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
    font-size: .9rem;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
    width: 100%;
    border-radius: 4px;
}

.login__input:hover {
    border-bottom-color: rgba(255, 255, 255, 0.4);
    background-color: rgba(255, 255, 255, 0.05);
}

.login__input:focus {
    border-bottom-color: var(--accent-primary);
    background-color: rgba(58, 119, 58, 0.1);
    transform: translateY(-2px);
}

.login__input::placeholder {
    color: var(--text-muted);
    transition: var(--transition);
}

.login__input:focus::placeholder {
    color: var(--text-secondary);
    transform: translateY(-5px);
}

.register__container {
    display: flex;
    flex-direction: row;
    gap: 8px;
    font-size: 0.95rem;
    justify-content: center;
    align-items: center;
    margin-top: 10px;
    padding: 15px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.register-btn {
    color: var(--accent-primary);
    font-weight: 600;
    transition: var(--transition);
    padding: 4px 8px;
    border-radius: 4px;
}

.register-btn:hover {
    color: var(--accent-secondary);
    background-color: rgba(58, 119, 58, 0.1);
    transform: translateY(-1px);
}

.login__input-btn {
    display: flex;
    margin: 0 auto;
    padding: 14px 40px;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    font-size: 1.3rem;
    outline: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    color: white;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.login__input-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: width 0.6s ease, height 0.6s ease;
    transform: translate(-50%, -50%);
}

.login__input-btn:hover::before {
    width: 300px;
    height: 300px;
}

.login__input-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(58, 119, 58, 0.4);
}

.login__input-btn:active {
    transform: translateY(-1px);
}

/* -------- Alertas y Errores ------------ */
.alert {
    background-color: rgba(0, 0, 0, 0.6);
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    transition: var(--transition);
}

.alert-error {
    color: var(--danger);
    background-color: rgba(224, 107, 107, 0.1);
    border-color: rgba(224, 107, 107, 0.3);
}

#js-errors:empty {
    display: none;
}

/* --------- Botón de Volver --------- */
.back__btn-container {
    width: 100%;
    display: flex;
    justify-content: left;
}

.back__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    color: var(--text-primary);
    transition: var(--transition);
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 1.2rem;
}

.back__btn:hover {
    color: var(--accent-primary);
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px) scale(1.05);
    border-color: var(--accent-primary);
}

/* --------- Media Queries --------- */

@container rtaMain (min-width: 56.25rem) {
    .login__form {
        max-width: 500px;
        padding: 40px 35px;
    }
    
    .login__title {
        font-size: 1.9rem;
    }
    
    .data__container {
        gap: 25px;
    }
    
    .login__label{
        font-size: 1.1rem;
    }
    
    .login__input {
        padding: 12px;
        font-size: .9rem;
    }
    
    .login__input-btn {
        padding: 16px 45px;
        font-size: 1.3rem;
    }
}

/* --------- Estados de Focus para Accesibilidad --------- */

.login__input:focus-visible,
.login__input-btn:focus-visible,
.back__btn:focus-visible,
.register-btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* --------- Animaciones de Entrada --------- */

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

.login__form {
    animation: fadeInUp 0.6s ease-out;
}

.login__input {
    animation: fadeInUp 0.8s ease-out;
}

.login__input:nth-child(2) { 
    animation-delay: 0.1s; 
}

.login__input:nth-child(4) { 
    animation-delay: 0.2s; 
}

/* --------- Password Toggle Wrapper --------- */
.input-wrapper {
    position: relative;
    width: 100%;
}

.toggle-password {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 5px;
    transition: var(--transition);
    outline: none;
    z-index: 2;
}

.toggle-password:hover {
    color: var(--text-primary);
}

.toggle-password:focus-visible {
    color: var(--accent-primary);
}