/* Reset básico y configuración global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Configuración del body principal */
body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Animación de fondo con patrón de puntos */
body::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: backgroundMove 60s linear infinite;
}

/* Keyframe para movimiento del fondo */
@keyframes backgroundMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* ================================================
   CONTENEDORES PRINCIPALES
   =============================================== */

/* Contenedor principal del login */
.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
    position: relative;
    z-index: 1;
}

/* Tarjeta principal del formulario */
.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    animation: slideIn 0.5s ease-out;
}

/* Animación de entrada de la tarjeta */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ================================================
   SECCIÓN DEL LOGO Y TÍTULO
   =============================================== */

.logo-section {
    text-align: center;
    margin-bottom: 30px;
}

/* Icono del logo con gradiente */
.logo-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.logo-icon i {
    font-size: 40px;
    color: white;
}

/* Título principal */
h1 {
    color: #1a202c;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
}

/* Subtítulo descriptivo */
.subtitle {
    color: #718096;
    font-size: 14px;
    margin-bottom: 30px;
}

/* ================================================
   FORMULARIO Y CONTROLES
   =============================================== */

/* Grupo de campos del formulario */
.form-group {
    margin-bottom: 20px;
}

/* Etiquetas de los campos */
label {
    display: block;
    color: #4a5568;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

/* Contenedor de inputs con iconos */
.input-wrapper {
    position: relative;
}

/* Iconos dentro de los inputs */
.input-wrapper i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #a0aec0;
    font-size: 16px;
}

/* Estilos de los inputs */
input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s ease;
    background-color: #f7fafc;
}

/* Estado focus de los inputs */
input:focus {
    outline: none;
    border-color: #667eea;
    background-color: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Toggle para mostrar/ocultar contraseña */
.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #a0aec0;
    transition: color 0.3s ease;
}

.password-toggle:hover {
    color: #667eea;
}

/* ================================================
   SECCIÓN RECORDAR Y OLVIDAR CONTRASEÑA
   =============================================== */

.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

/* Checkbox "Recordar dispositivo" */
.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #4a5568;
    font-size: 14px;
}

.remember-me input[type="checkbox"] {
    width: auto;
    padding: 0;
    margin: 0;
    cursor: pointer;
}

/* Enlace "Olvidaste tu contraseña" */
.forgot-password {
    color: #667eea;
    font-size: 14px;
    text-decoration: none;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: #764ba2;
}

/* ================================================
   BOTÓN DE LOGIN Y ESTADOS
   =============================================== */

/* Botón principal de login */
.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

/* Efectos hover del botón */
.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

/* Estado activo del botón */
.login-btn:active {
    transform: translateY(0);
}

/* Estado deshabilitado del botón */
.login-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Spinner de carga en el botón */
.login-btn .spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
}

/* Mostrar spinner cuando está cargando */
.login-btn.loading .spinner {
    display: inline-block;
}

/* Atenuar texto durante la carga */
.login-btn.loading .btn-text {
    opacity: 0.7;
}

/* Animación del spinner */
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ================================================
   MENSAJES DE ERROR Y ÉXITO
   =============================================== */

/* Mensaje de error */
.error-message {
    background-color: #fed7d7;
    color: #9b2c2c;
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    display: none;
    animation: shake 0.5s ease-in-out;
}

/* Mostrar mensaje de error */
.error-message.show {
    display: block;
}

/* Animación de sacudida para errores */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* Mensaje de éxito */
.success-message {
    background-color: #c6f6d5;
    color: #276749;
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    display: none;
}

/* Mostrar mensaje de éxito */
.success-message.show {
    display: block;
}

/* ================================================
   RECAPTCHA Y BADGE DE ENTORNO
   =============================================== */

/* Contenedor para reCAPTCHA */
.recaptcha-container {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

/* Badge de entorno de desarrollo */
.environment-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: #48bb78;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    display: none;
}

/* Badge específico para desarrollo */
.environment-badge.development {
    display: block;
    background: #ed8936;
}

/* ================================================
   RESPONSIVE DESIGN
   =============================================== */

/* Adaptación para dispositivos móviles */
@media (max-width: 480px) {
    .login-card {
        padding: 30px 20px;
    }

    h1 {
        font-size: 24px;
    }

    .remember-forgot {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
}